Hp Work Light 85660B Users Manual Spectrum Analyzer RF Section

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Troubleshooting and Repair Manual
Volume 1

HP 85660B Spectrum Analyzer RF Section

ri!ia

HEWLETT
PACKARD

HP Part No. 85660-90210
Microfiche Part No. 85660-90211
Printed in USA December 1990

@Copyright Hewlett-Packard Company 1990
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited, except as allowed under the copyright laws.
1212 Valley House Drive, Rohnert Park, CA 94928-4999, USA

Certification
Hewlett-Packard Company certifies that this product met its published specifications at the
time of shipment from the factory. Hewlett-Packard further certifies that its calibration
measurements are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration
facilities of other International Standards Organization members.

Warranty
This Hewlett-Packard instrument product is warranted against defects in material and
workmanship for a period of one year from date of shipment. During the warranty period,
Hewlett-Packard Company will, at its option, either repair or replace products which prove to
be defective.
For warranty service or repair, this product must be returned to a service facility designated
by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to
return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes
for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with an instrument
will execute its programming instructions when properly installed on that instrument. HP
does not warrant that the operation of the instrument, or software, or firmware will be
uninterrupted or error-free.

Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or
misuse, operation outside of the environmental specifications for the product, or improper
site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY
DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.

Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE
REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON
CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

Assistance
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office.
...
iii

Safety Symbols
The following safety symbols are used throughout this manual. Familiarize yourself with each
of the symbols and its meaning before operating this instrument.

Caution
u

Warning
Q

The caution sign denotes a hazard. It calls attention to a procedure which,
if not correctly performed or adhered to, could result in damage to or
destruction of the instrument. Do not proceed beyond a caution sign until the
indicated conditions are fully understood and met.
The warning sign denotes a hazard. It calls attention to a procedure which,
if not correctly performed or adhered to, could result in injury or loss of life.
Do not proceed beyond a warning sign until the indicated conditions are fully
understood and met.

General Safety Considerations
Warning
9

Warning

Before this instrument is switched on, make sure it has been properly grounded
through the protective conductor of the ac power cable to a socket outlet
provided with protective earth contact.

Any interruption of the protective (grounding) conductor, inside or outside
the instrument, or disconnection of the protective earth terminal can result in
personal injury.
There are many points in the instrument which can, if contacted, cause personal
injury. Be extremely careful.
Any adjustments or service procedures that require operation of the instrument
with protective covers removed should be performed only by trained service
personnel.

Caution

Before this instrument is switched on, make sure its primary power circuitry

has been adapted to the voltage of the ac power source.
Failure to set the ac power input to the correct voltage could cause damage to
the instrument when the ac power cable is plugged in.

iv

Contents

Volume 1
General Information

General information on the contents of the manual, including storage,
shipment, and packaging.

Overall
Troubleshooting

Troubleshooting index, special messages, diagnostic functions, error
correction routine, sweep system block diagram and troubleshooting,
mnemonics listing, and spectrum analyzer overall block diagram.

Analog
Troubleshooting

Phase lock loop operation, start frequency tuning equations, and phase
lock troubleshooting.

Digital
Troubleshooting

Instrument preset checks, digital storage verification, and RF digital
troubleshooting block diagram.

A5 Front Panel
through A8
Rectifier/AS Power
Line Module

Service sheets containing circuit descriptions, troubleshooting
information (if applicable), replacement procedures (if applicable),
replaceable parts lists, parts identification (if applicable), block
diagrams, component locations, and schematic diagrams.

Volume 2
A10 20/30
Synthesizer through
A23 Motherboard

Service sheets containing circuit descriptions, troubleshooting
information (if applicable), replacement procedures (if applicable),
replaceable parts lists, parts identification (if applicable), block
diagrams, component locations, and schematic diagrams.

General Parts Listing

Replaceable parts information, reference designations and
abbreviations, manufacturer’s code list, RF miscellaneous parts list,
RF assemblies parts list, and instrument parts identification.

Major Assembly and RF section major assembly and component locations.
Comuonent Locations

Contents 1

General Information

Introduction
This volume of the Troubleshooting and Repair Manual contains information for the
troubleshooting and repair of the RF Section of the instrument. This information is combined
in service sheets and indexed with tabs for quick reference. Also contained in this volume
are overall troubleshooting information and illustrations of the instrument useful in isolating
failures to the RF or IF-Display Section

Instruments Covered by This Manual
This Troubleshooting and Repair manual contains information for the servicing of all
HP 85660B RF Sections with serial number prefixes of 2410A and above. The assemblies of
the HP 8566AB Retrofit Kit (HP 8566A to HP 8566B Retrofit Kit) are also covered in this
manual. The following HP 85660B RF Sections Options are covered in this manual.
n

Option 001 (75fl Input)

n

Option 400 (400 Hz Operation)

n

Option 462 (Impulse Bandwidths)

Changes that are made to the HP 85660B after the printing of this manual will be included in
an update supplement.
The HP 85660B RF Section is used with the HP 85662A IF-Display Section as the HP 8566B
Spectrum Analyzer. The HP 85660B RF Section is used with the HP 85662A Option 462
IF-Display Section as the HP 8566B Option 462 Spectrum Analyzer.

Service Sheets
The service sheets in this manual are organized in alphanumeric order and are indexed with
tabs to make it easy to locate a specific service sheet. Each of the service sheets contain the
following information:
w Circuit Description (where practical)
n

Replacement Procedure (where practical)

w Troubleshooting Hints (where practical)
w Replaceable Parts List
n

Component Location Illustration

w Parts Identification (where practical)
n

Block Diagram (where practical)
General Information 1

n

Schematic Diagram

Replacement Procedures
Replacement procedures are included for use in removing and replacing assemblies for repair.
They are located in the following sections:
w A5 Front Panel
Front Panel Removal and Repair
w A6 RF Module
A6 RF Module Replacement
A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement
A6A2 RF Attenuator Replacement
A6A4 Second Converter Replacement
A6A6 First Converter Replacement
A6A15 3.6 GHz BPF, A6A16 1.5 GHz
LPF, and A6A18 LPF Replacement
n

A6A3 Last Converter
A6A3 Last Converter Replacement

H A6A7 YTX Current Driver/A6A5 ACLU/A6A8 YTX
A6A5 Amplifier/Coupler/Load Unit
(ACLU) Replacement
A6A7 YTX Current Driver Replacement
A6A8 YTX Replacement
w A7M/N-Reference
A7 M/N-Reference Replacement
H A8 Rectifier/A9 Power Line Module
RF Section Internal Fuse Replacement
Transformer Replacement
Power Transistor Replacement
n

All YTO Loop
All YTO Loop and AllA3 YTO
(2.0 to 6.2 GHz Oscillator) Replacement

n

Al7 Positive Regulator
RF Section Internal Fuse Replacement

n

Al8 Negative Regulator
RF Section Internal Fuse Replacement

2 General Information

Major Assembly and Component Locations
Major assembly and component location illustrations for the RF Section are located at the
rear of this manual.

Troubleshooting
Troubleshooting information for the RF Section is divided into three levels as follows:
W Instrument Level
Spectrum Analyzer Overall Troubleshooting
w Section Level
RF Section Analog Troubleshooting
RF Section Digital Troubleshooting
A6 RF Module
A7 M/N-Reference/A22 10 MHz Frequency Standard
A10 20/30 Synthesizer
All YTO Loop
n

Assembly Level
Most assemblies have troubleshooting hints immediately following circuit descriptions.
Troubleshooting information is also located on assembly level block diagrams, notes, and
schematics.

All assemblies are indexed by tab except for the ones listed below. The index tab they can be
found under is also listed.
Table 1. Assembly Locations
Location

Assembly
A24
Tl

I

General Parts Listing

I

A8 Rectifier/AS Power Line Module

Printed Circuit Board Edge Connector Contact Cleaning
Materials
w Lint-free cloth or equivalent (HP Part Number 9310-0039, Check Digit 3).
w Solution of 80% electronics-grade isopropyl alcohol and 20% water.
w Static-free work station.
Procedure
1. Dampen the cloth with the alcohol and water solution and scrub the edge connector
contacts vigorously, using a circular motion. Polish one side of the board at a time until
the contacts shine, keeping the cloth damp to dissolve contaminants and reduce static
electricity.

General Information 3

2. Using a clean cloth, dry the contacts by wiping from their inside to outside edge. This
prevents particles from building up on the contact edges.

Caution
9

Do not use erasers to clean the edge connectors. They cause microscopic
damage to the contact surface, removing the thin gold plating and exposing
the nickel underplating, which eventually corrodes. Erasers also leave a film on
the contact and generate static electricity.
Do not use paper of any kind to clean the edge connector contacts. Paper or
lint particles left on the edge contact surface can cause intermittent electrical
connections.
Do not touch contact or trace surfaces with bare hands. Always handle the
board by its edges.

HP-IB Address Selection
The HP-IB address for the HP 8566B is preset at the factory by means of a five-segment
binary switch located on the Al5 Controller Assembly. This switch is set to the binary
number 11111 which corresponds to a decimal equivalent of 31. The number 31 is a special
instruction code that commands the instrument to use the last input address stored in
memory. This stored HP-IB address is ASCII 2R (decimall 18) and determines the address to
be used on “power up.”
The HP-IB address may be changed to any of the addresses listed in Table 2 by resetting the
HP-IB address switch to correspond to the binary equivalent of the desired ASCII character
or decimal value as indicated in the table. The five-segment switch is illustrated in Figure 1
and is shown in its preset position (decimal 31).

4 General Information

Table 2. Cross-Reference Between ASCII, Decimal, and Binary Address
Codes
ASCII Character Decimal Value 5-Bit Binary Equivalent
@

SP

00

00000

A

!

01

00001

B

”

02

00010

C

#

03

00011

D

$

04

00100

E

%

05

00101

F

&

06

00110

G

’

07

00111

H

(

08

01000

I

>

09

01001

J

*

10

01010

K

+

11

01011

L

’

12

01100

M

-

13

01101

N

.

14

01110

0

/

15

01111

P

0

16

10000

Q

1

17

10001

R

2

18

10010

S

3

19

10011

T

4

20

10100

U

5

21

10101

V

6

22

10110

W

7

23

10111

X

8

24

11000

Y

9

25

11001

26

11010

Z
[

;

27

11011

\

<

28

11100

]

=

29

11101

?

>

30

11110

General Information 5

A6

A5

A4

A3

A2

Al

I
Switch in
Down Position
= Logic 1
Indicates Switch
in Down Position

Figure 1. HP-IB Address Switch (Shown in Factory Preset Position)
The HP-IB address may also be changed from the front panel or programmed via a controller
using a special shift key function (KSP). This address remains in effect as long as the
instrument memory has power from either the ac line or the internal battery. However, if
this stored address is lost, the default address is the factory preset decimal 18 (ASCII 2R).
For additional information on the HP-IB address, refer to the Operating and Programming
Manual.

Storage and Shipment
Environment
The instrument may be stored or shipped in environments within the following limits:
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +75°c
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5% to 90% at 0°C to 40°C
Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Up to 15,240 meters
(50,000 feet)
The instrument should be protected from temperature extremes which might cause
condensation within the instrument.
Original Packaging
It is recommended that the original factory packaging materials be retained for use
when shipping the instrument. If original packaging material cannot be retained,
packaging materials identical to those used in factory packaging are available through the
Hewlett-Packard offices. Part numbers and descriptions of the packaging materials are listed
in Figure 2.
The combined weight of the two instrument sections is approximately 50 kg (112 lbs).
Because of the weight involved, do not package the instrument sections fastened together as
one unit. The instrument sections must be separated and packaged in separate containers.
The quantity of packaging materials in Figure 2 is for only one instrument section.
If the instrument is being returned to Hewlett-Packard for servicing, attach a tag to each
carton indicating the type of service required, return address, model number, and full serial
number. For your convenience, a supply of tags is included at the end of this section. Also,
mark each container FRAGILE to assure careful handling. In any correspondence, refer to the
instrument by model number and full serial number.

6 General Information

Other Packaging
If it is necessary to use packaging materials other than the type used in original factory
packaging, the following general instructions should be followed.
1. Separate the two instrument sections and wrap each in heavy paper or plastic.
2. Place the instrument sections in separate containers with 8 to 10 cm (3 to 4 inches) of
shock-absorbing material around all sides to provide firm cushioning and prevent movement
inside the container. Protect front panels with cardboard. Double-wall corrugated cartons
of 125 kg (275 lb) bursting strength are sufficient for shipping containers.
3. Seal each container securely and, if shipping to a Hewlett-Packard office or service center,
attach a tag to each container indicating the type of service required, return address, model
number and full serial number. For your convenience, a supply of tags is included at the
end of this section.
4. Mark each container FRAGILE to assure careful handling.

General Information 7

NOTE
Front handles must be
mounted for shipment.

Figure 2. Packaging for Shipment Using Factory Packaging Materials

Recommended Test Equipment
A list of recommended test equipment is contained in the HP 8566B Performance Tests
and Adjustments Manual (HP Part Number 08566-90148). This list includes all of the
equipment that is necessary to perform the adjustments and tests of the HP 8566B. The List
of Recommended Test Equipment recommends a model number for each piece of equipment
needed and contains minimum specifications so that other equipment may be substituted for
the recommended model.

8 General Information

I
0

0

300000000000000000
18 X 2

lj

25 X 2

Item HP Part
Number

CD

Qty

2
8

~000000000000000~
15 x 2

Description

-

1

85660-60114

5

1

EXTENDER BOARD: Al2 RF SECTION INTERFACE

2

85662-60088

4

1

PC BOARD: DISPLAY ADJUSTMENT TEST

3

08505-60042

8

2

EXTENDER BOARD: 36 CONTACTS; 2 ROWS OF 18

4

85680-60034

2

2

EXTENDER BOARD: 50 CONTACTS; 2 ROWS OF 25

5

08565-60107

8

2

EXTENDER BOARD: 44 CONTACTS; 2 ROWS OF 22

6

08505-60041

7

1

EXTENDER BOARD: 30 CONTACTS; 2 ROWS OF 15

7

85680-60093

3

2

CABLE: 4-FOOT LONG; BNC TO SMB SNAP-ON

8

1250-0669

9
-

1

ADAPTER: SMB SNAP-ON MALE TO SMB SNAP-ON MALE

Figure 3. Service Accessories, HP Part Number 08566-60001

General Information 9

This page intentionally left blank.

10 General Information

GRAPHIC SYMBOLS USED ON SCHEMATIC AND BLOCK DIAGRAMS
BASIC COMPONENT SYMBOLS
CIRCUIT ASSEMBLY
BORDERLINE

VARIABLE RESISTOR
(WIPER Moves TOWARD cw
WHEN SHAFT IS ROTATED IN
A CLOCKWISE
DIRECTION)

‘=‘-b=

FUSE

INDICATES A
MECHANICAL
CONNECTION

HEAVY LINE WITH ARROWS
INDICATES PATH AND
DIRECTION OF MAIN SIGNAL

THERMISTOR

it

-11

2

I_
I-

+

ELECTROLYTIC

CAPACITOR

3

CAPACITOR

VARIABLE

fr
-o-63

CAPACITOR

FEEDTHROUGH

CAPACITOR

FERROUS-CORE

SLUG-TUNED

RELAY(BOX

INDUCTOR

DIGITAL

SURFACE ACOUSTIC
WAVE (SAW)

-@-

BUS

A

JUMPER

WIRE

LIGHT-EMITTING DIODE

PIN

SW1
< ;k;-:k ;c”,;‘,, O

DIODE

R

TRIAC

STEP

INDUCTOR

OFTEN

INDICATES A
SOLDERED
CONNECTION

HEAVY DASHED LINE WITH
ARROWS INDICATES PATH
AND DIRECTION OF
MAIN FEEDBACK

OMITTED)

@
J

RECOVERY

DIODE

FERRITE

-@

BEAD

INDICATES
CONDUCTOR

Q

SHIELDING
FOR CABLES

TEMPERATURE-COMPENSATED
VOLTAGE-REFERENCE DIODE
GROUNDED COAXIAL
SHIELDING

8
SILICON CONTROLLED
RECTIFIER (SCR)

@
-4

(ALTERNATE

*
TRANSISTOR.

3

PNP

@

-1rlt

NPN

-La*

PUSHBUTTON
SWITCH
NORMALLY OPEN

@

SPEAKER
4
PURPOSE

BREAKDOWN

DIODE

JUNCTION-FET.

N-CHANNEL

JUNCTION-FET.

P-CHANNEL

Ix

AIR-CORE

TRANSFORMER

fa

DIODE (ZENER)

J
e-

FERROUS-CORE
TRANSFORMER

63
SCHOTTKY

DIODE

49

@
VARACTOR

it-B

PUSHBUTTON
SWITCH
NORMALLY
CLOSED

c

SW1

CRYSTAL

GENERAL

SW1

4

TRANSISTOR,

+

INDICATES FACTORY
SELECTED COMPONENT

RELAY)

DIODE
@

MOS-FET. N-CHANNEL
ENHANCEMENT MODE

MOS-FET,N-CHANNEL
DEPLET I ON MODE

MOS-FET. P-CHANNEL
ENHANCEMENT MODE

MOS-FET.P-CHANNEL
DEPLETION MODE

Figure 5. Graphic Symbols (1 of 2)

General Information 11

GRAPHIC SYMBOLS USED ON SCHEMATIC AND BLOCK DIAGRAMS
BASIC

-c-c--

F--T

L--J

TPl

TEST POINT (TERMINAL
PROVIDED FOR TEST
PROBE CONNECTION)

48
CONNECTION SYMBOL
PLUG (MOVABLE)

INDICATING

CONNECTION SYMBOL
JACK (STATIONARY)

INDICATING

MEASUREMENT
POINT (USED
TO INDICATE A CONVENIENT
POINT FOR MEASUREMENT.
NO TERMINAL PROVIDED
FOR TEST PROBE)

A

B

CABLE
INDICATES WIRE OR
CABLE COLOR CODE
(COLOR SAME AS RESISTOR
COLOR CODE.
FIRST NUMBER
INDICATES BASE COLOR,
SECOND AND THIRD NUMBERS
INDICATE COLORED STRIPES)

INDICATES A SINGLE PIN
OF A PC BOARD EDGE
CONNECTOR

TOROIDAL

J-5

(CONTINUED)

SYMBOLS

INDICATES A PLUG-IN
CONNECTION (F) TO (M)

MULTI-CONDUCTOR
OR BUS

I

COM PONENT

I
:

TRANSFORMER

EARTH

USUALLY INSTRUMENT CHASSIS GROUND
(MAY BE ACCOMPANIED BY A
NUMBER OR LETTER TO SPECIFY
A PARTICULAR GROUND)

/h OR 6
LIMITER

ENCLOSES REAR PANEL
DESIGNATION

GROUND SYMBOL

PD

SCREWDRIVER ADJUSTMENT

P

FRONT-

OR REAR-PANEL

CONTROL

COMMONLY USED ASSEMBLY AND CIRCUIT SYMBOLS

0
0
B

OSCILLATOR, RPG
(ROTARY PULSE
GENERATOR)

PHASE-FREQUENCY
DETECTOR

FAN MOTOR

SERVICE
DETECTOR
ATTENUATOR
(OR PAD)

HIGH PASS
FILTER

AMPLIFIER
BUFFER

MIXER

BAND REJECT
FILTER

LOW PASS
FILTER

63

0
S

BANDPASS
FILTER

OP AMP

SAMPLER

fi!+

TL-

VARIABLE
ATTENUATOR
TRANSMISSION
LINE

BASIC LOGIC SYMBOLS
AMPLIFIER
BUFFER

-

,I
-

INVtHltH
BUFFER

3-STATE
INVERTER
RllFFFR

3B;;;zE

l7
-D-

Q

u-

>

AND

%

OR

GATE
GATE

SCHM I TT
TRlGGER

-a

;F;;;TE

OPEN-COLLECTOR OUTPUTS ARE
INDICATED BY THE PRESENCE OF
THE OPEN-COLLECTOR SYMBOL:G

Figure 5. Graphic Symbols (2 of 2)

12 General Information

a

NAND

GATE

B NOR GATE

SAFETY SYMBOL

DANGEROUS L‘OLTAGES PRESENT
BE EXTREMELY CAREFUL!

Schematic Symbols for Digital Integrated Circuits
The following is a guide to the symbols used for digital or logic ICs in this manual. The
symbology is based upon American National Standard ANSI Y32.14, Graphic Symbols for
Logic Diagrams (Two-State Devices), but does not strictly follow the standard. Figure 6
should be consulted for the explanation of digital IC symbols used in Sections VIII and IX.
Definitions
Logic Element. The part or parts of a logic device symbol having a well-defined logic function
(OR, AND, FLIP-FLOP, and so on) and one or more outputs. The inputs of a logic element
may be data or control inputs; the outputs are data outputs.
Control Block. The part of a logic device symbol to which all logic lines common to a group of
logic elements are connected. Lines connected to a control block are control lines.
Function Label. The notation within a logic device symbol that denotes its overall logic
function (counter, shift register, multiplexer, and so on)
Line Label. The symbol or abbreviation associated with an output or input line that defines
the action of the line.
Indicator Symbol. A symbol associated with an input or output line which defines the active
state or special characteristics of the line.
Basic Logic Symbols

D i s t nctive-Shape Symbols
Amplifier/Buffer

AND Gate

OR Gate

EXCLUSIVE OR Gate

Rectangular Symbols
General Logic Element

I

NOTE :

*

1

I

*

Control Block

Schmitt Trigger

*El

Logic Elements with
Comnon Control Block

If elements
A n a s t e r i s k i n d i c a t e s t h e location o f t h e f u n c t i o n l a b e l .
sharing control lines are widely separated, each element will have a
separate c o n t r o l b l o c k .

Figure 6. Schematic Symbols for Digital Integrated Circuits (1 of 7)

General Information 13

INDICATOR SYMBOLS (positive logic assumed)

ACTIVE-HIGH inputs and outputs are
indicated by the absence of the

ACTIVE-LOW

d zl

inputs

and

outputs

ore

EDGE-SENSTIVE (Dynamic) inputs are
indicated by the presence of the
dynamic input symbol, D.

- A C T I V E

P E R I O D

:k A C T I V E PERIOD

;;-

TRAILING-EDGE ACTIVATED outputs are
indicated by the output delay
symbol, 1. These outputs become
active when the signal thot
initiates the change returns to its
original state (example: the
outputs of a J-K master-slave
flip-flop).

1
I-

OPEN-COLLECTOR outputs are
indicated by the presence of the
open-co1 I ector s y m b o I , 0.

Figure 6. Schematic Symbols for Digital Integrated Circuits (2 of 7)

14 General Information

Note:
The logic negation symbol (0) a1 one gives no information about the actual voltage levels used
in a digital cirucit. For this reason the type of logic system (positive or negative) must be
specified. In this manual, unless otherwise noted on the schematic, the logic system is positive;
that is, the more positive voltage level is the HIGH or l-state and the less positive level is the
LOW or O-state.
Function Labels
c

Adder

D

Amplifier/Buffer

1

4

Monostable Multivibrator (One-Shot)

&

And Gate

21

Or Gate

=l

Exclusive or Gate

X-Y

Encoder, Decoder

XMAX+Y

Priority Encoder

greek symbol

Schmitt Trigger

ALU

Arithmetic and Logic Unit

CTR

Counter

DEMUX

Demultiplexer

FF

Flip-Flop

MUX

Multiplexer

RAM

Random Access Memory

REG

Register

ROM

Read Only Memory

SAR

Successive Approximation Register

SR

Shift Register

Figure 6. Schematic Symbols for Digital Integrated Circuits (3 of 7)

General Information 15

Line Labels
+

Shift Left (or up)

+

Shift Right (or down)

+1

Count Up

- 1

Count Down

=0,-l

Borrow Output

=9,+1

Carry Output (Decimal Counter)

=15,+1

Carry Output (Binary Counter)

An

nth Address Bit (ROM, RAM)

c

Clock Input

D

Data or Delay Input (Flip-Flop)

Dn

nth Data Bit Input

EN

Enable

F

3-State Enable Input (See “Dependency”)

G

Gating Input (See “Dependency”)

J

J-K Flip-Flop J Input

K

J-K Flip-Flop K Input

LD

Load Enable Input (Synchronous)

PS

Preset Input (Asynchronous)

R

Reset or Clear Input

RD

Read Enable Input (RAM, ROM)

S

Set Input

SEL

Line or Function Select Input

SER

Serial Data Input (Shift Register)

T

Trigger Input (Monostable)

WR

Write Enable Input (RAM)

Yn

nth Data Bit Output or I/O

3-ST
(placed by
function label)

3-State

Figure 6. Schematic Symbols for Digital Integrated Circuits (4 of 7)

16 General Information

Notes
1. The suffix or subscript 0 denotes the least significant bit (LSB) of a data or address word.
2. Letters may be used to identify a line or logic element without indicating a specific logic
function. For example:

Triple

- - - A
- - - B
C
MUX
O7--l
A
Ol+--l
B
0
l--l

Z-Channel

Multiplexer

Letters are used to relate control
inputs to logic elements.
The
numerals 0 and 1 indicate O-state
and l-state, respectively, and
relate the position of a “switch”
to the logic state of the corresponding control line.

c

DEPENDENCY (G and F)
The dependency of i n p u t s o r o u t p u t s o n a n i n p u t is i n d i c a t e d w i t h
gate symbols or the G line label.
Gate symbols are often used when
the dependency exists between inputs. Two examples are:

1 Two inputs
ANDed t o
produce a
reset

Figure 6. Schematic Symbols for Digital Integrated Circuits (5 of 7)

General Information 17

When the G label is used, the gating input is labelled with a G followed by a numeral or
letter. The line labels of the gated inputs or outputs are prefixed with the same numeral or
letter. Two examples are:

2-Bit

Register

IC S y m b o l
a

Equivalent

Gl
REG
d

b
1s
C

IS
i

e

2-to-4 Line Decoder

-

1
2

a -

G J
X-Y

Jl +
J2 h
J3 w

&
&
&
E
kmI

I

I

-

Figure 6. Schematic Symbols for Digital Integrated Circuits (6 of 7)

18 General Information

The F line label is used to indicate S-state logic. The S-state enable i: nput is labelled with an
F and numerals or letters are used as with the G label:
Counter with
3-State O u t p u t s

I--i’-

- > c

F

4 Fl
R
XT
CTR
(1)

3-Stat e Buffers

U6A

l-

(2) ’ (4) ’ -

(8) ’ -

Figure 6. Schematic Symbols for Digital Integrated Circuits (7 of 7)
Weighting of Input and Output Lines
The coding of multiplexers, demultiplexers, encoders, and decoders is shown by decimal
weighting. An example is the 2-to-4-line decoder shown on the previous page.
Weighting of Flip-Flops
When the position of a flip-flop in an array is significant (as in counters and shift registers),
the flip-flop is labelled with its decimal weight. An example is the “Counter with S-State
Outputs” shown above.

General Information 19

Overall Troubleshooting
This chapter contains information that will help to identify the system of the spectrum
analyzer that is not operating correctly. Table 1, “Troubleshooting Index,” may be used to
locate troubleshooting information in the RF and IF Display Troubleshooting and Repair
Manuals. This chapter also describes the Special Messages that may be displayed on the CRT
and the Diagnostic Functions that are accessible from the front panel. The Error Correction
Routine and the Sweep System are also described in this chapter. The overall block diagram
of the HP 8566B is located at the end of this chapter.

Overall Troubleshooting 1

Table 1. Troubleshooting Index
Troubleshooting Information

Tab Title or Location

Section

Start Frequency Tuning Equations and
Phase Lock

RF Section Analog Troubleshooting
Block Diagram

RF

Diagnostic Functions

Spectrum Analyzer Overall
Troubleshooting

RF

Digital Storage

A3 Digital Storage Block Diagram

IF

Display System

Spectrum Analyzer Overall
Troubleshooting

RF

Al Display Section Block Diagram

IF

Error Correction Routine

Spectrum Analyzer Overall
Troubleshooting

RF

RF Section Digital (includes INSTR
CHECK LEDs)

A3 Digital Storage Block Diagram

IF

RF Section Digital Troubleshooting
Block Diagram

RF

Al5 Controller

RF

Special Messages

Spectrum Analyzer Overall
Troubleshooting

RF

Sweep System

Spectrum Analyzer Overall
Troubleshooting

RF

AlAl Keyboard

Al2 Front-Panel Interface

RF

A3 Digital Storage

Spectrum Analyzer Overall
Troubleshooting

RF

A3 Digital Storage Block Diagram

IF

Spectrum Analyzer Overall
Troubleshooting (Sweep System)

RF

A3 Digital Storage Block Diagram

IF

Al Display Section Block Diagram

IF

A3 Digital Storage Block Diagram

IF

A3Al Trigger*

A3A2 Intensity Control*
A3A3 Line Generator*
A3A4 Memory

Al Display Section Block Diagram

IF

A3 Digital Storage Block Diagram

IF

Al Display Section Block Diagram

IF

A3 Digital Storage Block Diagram

IF

A3 Digital Storage Block Diagram

IF

A3A5 Data Manipulator
A3A6 Main Control
A3A7 Interface
* Troubleshooting information is also located behind the tab with this title.

2 Overall Troubleshooting

Table 1. Troubleshooting Index (continued)
Troubleshooting Information
A3A8

Analog-Digital-Converter*

A3A9 Track and Hold*

Tab Title or Location

Section

Spectrum Analyzer Overall
Troubleshooting (Sweep System)

RF

Al Display Section Block Diagram

IF

A3 Digital Storage Block Diagram

IF

Spectrum Analyzer Overall
Troubleshooting

RF

(Diagnostic Functions)
Al Display Section Block Diagram

IF

A3 Digital Storage Block Diagram

IF

Spectrum Analyzer Overall
Troubleshooting

RF

A4Al Video Processor*
A4A2 Log Amplifier-Detector*
A4A3 Log Amplifier-Filter*
A4A4 Bandwidth Filter
A4A5 Step Gain*

(Error Correction Routine)

A4A6 Down/Up Converter*
A4A7 3 MHz Bandwidth Filter
A4A8 Attenuator-Bandwidth Filter*
A4A9 IF Control*
A5 Front Panel

Al2 Front-Panel Interface

RF

Al5 Controller

RF

Spectrum Analyzer Overall
Troubleshooting

RF

A6 RF Module
A7 M/N Loop
A10 20/30 Synthesizer

(Diagnostic Functions)

All YTO Loop
Spectrum Analyzer Overall
Troubleshooting (Sweep System)

RF

Al5 Controller

RF

Al5 Controller*

Spectrum Analyzer Overall
Troubleshooting (Sweep System)

RF

Al6 Scan Generator*

Spectrum Analyzer Overall
Troubleshooting (Sweep System)

RF

Al2 Front-Panel Interface*

* Troubleshooting information is also located behind the tab with this title.

Overall Troubleshooting 3

Special Messages
As a convenience to the operator and as an aid in servicing, eleven messages can appear in
the upper right corner of the CRT display. (Ten of these messages are shown in Figure 1.)
Five of the messages inform the operator of possible erroneous data from improper instrument
operation. The other six provide warnings of instrument malfunctions that must be repaired
for proper instrument operation.
A brief description of each message follows. The troubleshooting information listed is not
meant to be exhaustive. Refer to the appropriate Troubleshooting Block Diagram and
Troubleshooting Hints for more detailed information.
EXT REF

Indication to operator that the external frequency reference is selected.
MEAS UNCAL

A warning to the operator that the amplitude/frequency data on the CRT is invalid because
the analyzer’s sweep speed is too fast for the selected bandwidth.
A warning to the operator that the analyzer settings displayed on the CRT have been changed
but the trace data has not been updated. This would occur, for example, when Trace A view
is selected and then Center Frequency is changed.
OVEN COLD

Indication that the frequency reference oven temperature is too low. There will be an oven
cold indication normally for about 10 minutes after the line power is initially applied to
the instrument. (The oven is powered and should stay warm as long as the instrument
is in STANDBY.) The time base HOVC (High = Oven Cold) signal is routed to the Al2
Front-Panel Interface for generation of this message.
BATTERY
A warning to the operator that the CMOS memory on the Al5 Controller has probably
lost the stored instrument states. The warning can only appear at instrument turn on. If it
appears, the instrument automatically reinitializes all the instrument states to the instrument
preset condition. The battery warning can be caused by a problem with the Al5 CMOS
memory power supply circuit. Performing the “long POP” instrument check (see RF Section
Digital Troubleshooting) erases the stored instrument states and causes a battery warning to
appear at instrument turn on. The HP-IB address is also lost. The battery warning can be
removed by pressing [GHz’ and the HP-IB address restored by keying in (jZiK) (ZZKj
[desired address] [jGiZi?Z).

4 Overall Troubleshooting

PLl

The PLLl Phase Lock Loop is unlocked. Items to check are:
n

AlOAl - Check signal out at AlOAlJ3.

n

AlOA2 - Check signal in at AlOA2J2.

n

A10A3 - Check signal out at AlOA3J3.

n

AlOA4 - Check signal out at AlOA4J2 and in at AlOA4J4.

PLL2

The PLL2 Phase Lock Loop is unlocked. Items to check are:
n

AlOA5 - Check signal out at AlOA5J3.

n

AlOA6 - Check 4 Det Out voltage at AlOA6TP7.

n

AlOA7 - Check 500 kHz Reference at AlOA7TP5 and divided output at AlOA7TPl.

n

AlOA8 - Check VCO Tune output current at AlOA8J2.

REF UNLOCK

The 10 MHz Reference Loop is unlocked. Items to check are:
n
n

OVEN COLD indicator on. This is normal operation.

Cable W15 connected to rear-panel FREQ REFERENCE IN and OUT connectors.

w Rear-Panel FREQ REFERENCE EXT/INT switch in proper position.
n

A7Al and A7A2 - Check 10 MHz out at A7AlJ4.

YTO UNLOCK

The YTO Phase Lock Loop is unlocked. Items to check are:
1 A19 D/AConverter
n

A20 Main Coil Driver

n

A21 FM Coil Driver

n

All YTO Loop

n

Al6 Scan Generator

M/N UNLOCK

The M/N Phase Lock Loop is unlocked. Items to check are:
n

A7A3 - Check output at A7A3Jl.

n

A7A4 - Check output at A7A4Jl.

Overall Troubleshooting 5

HET UNLOCK
The RF Module Phase Lock Loop is unlocked. Items to check are:
n

CAL OUTPUT

n

A6A9 - Check voltage at A6A9J4.

n

A6A4 - Check 3.3 GHz output of A6A4.

FREQUENCY
DIAGNOSTICS BLOCK

TRACE
DETECT I ON
INDICATION

SPECIAL
MESSAGES
BLOCK

i/

ACTIVE
FUNCTION
BLOCK

II
S T A R T 2 . 0 GHz
R E S BW 3 0 kHz

VBW 1 0 0

kHz

S T O P 2 2 . 0 GHz
SWP 5 0 0 m s e c

Figure 1. CRT Locations of Special Messages and Diagnostic Function Indicators

Diagnostic Functions
The Diagnostic Functions are accessible through the blue lsHlFTJ key on the front panel.
Through their use it is possible to trace many instrument malfunctions back to the functional
block without removing any assemblies. They are also used in Performance Tests and
Adjustments as an aid in performing necessary adjustments. A summary of the Diagnostic
Functions follows. More information on their use can be found in the troubleshooting
procedures.

6 Overall Troubleshooting

Frequency Diagnostics

[SHIFT) R1,~~b

REF

LVL)

(KM)

This function displays many of the internal frequency control parameters in the upper
left corner of the CRT display. (See Figure 1.) These parameters are the programmed
values determined by the Al5 Controller. For example, following an C2-221, a @ZiJ
R MKR~REF LVL) (KSR) might display the following values:
1. 2.321 400000
2. 30.000 000
3. 1 17 11
4. 184.545 455
5. 150.000 000
6. 160.300 000
Line 1 is the setting of the YTO Frequency for the selected START frequency.
Line 2 is the setting of the 20/30 SYNTHESIZER for the selected START frequency.
Line 3 contains three different numbers. The first is the band code number. The setting varies
from 0 for center frequencies below 2.5 GHz to 4 for center frequencies above 18.6 GHz. The
second number is the M number of the M/N loop. The third number is the N number of the
M/N Loop.
Line 4 indicates the frequency output of the M/N loop.
Line 5 indicates the frequency to which the PLL2 VCO has been tuned.
Line 6 shows the frequency to which the Controller has programmed the PLL3 VCO.

Lock Indicator Disable A12TP2 Jumpered to A12TP3
This function permits the analyzer to sweep at normal sweep rates ignoring any phase lock
flag indications. For example, if a YTO UNLOCK problem exists, the analyzer will sweep
slower since it spends most of its time trying to lock the YTO at center frequency during
retrace. By performing the phase lock inhibit, the analyzer does not waste time trying to lock
the YTO, so the front panel keys and display can be used as in normal operation. Note that
the displayed frequencies will probably not be accurate.

Trace Detection
Three different sampling modes are used by the analyzer in converting the video signal; these
are positive peak, negative peak, and sample. Normally the analyzer selects the proper mode
for each measurement, but these can be manually selected to verify proper operation. The
mode selected is indicated on the upper left side of the CRT display when under manual
control. (See Figure 1.) For example, a signal could be expanded to 2 dB/div to eliminate the
noise floor, and then by comparing a positive peak trace measurement, it can be determined
if the gains and offsets of the three modes are properly aligned. All three should appear the
same on a stable, noise-free signal. When in the noise, the positive peak should display the
highest noise peaks, negative peak mode should display the lowest noise levels, and sample
mode should display values between the positive and negative peaks.
[SHIFT) Trace A b[MAXHOLD) (KSb) displays positive peaks.

Overall Troubleshooting 7

@iZY) Trace A dIVIEW) (KSd) displays negative peaks.
(SHIFT) Trace A ‘[B) (KSe) displays sampled data.
Trace A(ksa)returns to the normal automatic detection modes and
removes the CRT indication.

Error Correction Routine
The internal Error Correction Routine available by pressing @iFi) w[~~~~~~~~~ SPAN]
(KSW) is also useful as a diagnostic aid. If a malfunction causes the routine to stop, restart
it and note the control settings (RES BW, ATTEN, REF LEVEL, LOG/LIN, etc.) when
the failure occurred. If the routine runs, the correction factors can be displayed by pressing
(SHIFT] “‘@ (KSw). Figure 2 displays the data for a typical instrument. Table 2 gives the
parametric information, specifications and a place to start the troubleshooting procedure.
Caution must be exercised in interpreting the correction factor data. Wrong conclusions
can be reached by not understanding how the internal program runs. The program assumes
that the input signal level is -10.0 dBm. Any error in this level translates to the correction
factors; therefore, the Amplitude Accuracy test (RECALL] 8 should be performed first. The
internal program runs in the LIN mode while [RECALL] 8 is in 1 dB/LOG mode. Large offsets
in LOG/LIN offset (lines 1 and 14) will cause errors in the data.

h7

REF - 7 . 0

dBnl

ATTEN

10

-0.17 ae
0.30
dB
0 25 dB
0.20 dB
0.21 ClB
0 05 dB
155.000 unr
0.00 dB
75.000 unz
-0 10 dB
18.000 KHZ
-O.lB as
13.000 KHZ
L50 dB
-11.000 ltHZ
8.20 dB
-400
HZ
0.11 ClB
200
HZ
0.25 LiB
-1Eio HZ
0 25 de
-52
HZ
0 20 ClB
-‘in
HZ
0.05 dB
-41
HZ
-0.22 dB
-36
HZ
-0.17 dB
-0.03 dB
-0.07 oe
-0.03 .3B
-0 15 dB
CORR’D
-0 08 OB
-0.18 dB
-D.IS dB
-0.02 dB
-8.02 dB
-0.02 dB
-0 02 dB
-0 02 as
-0.02 dB
START 1Em 000 000 MHZ
RES
BW 30 HZ
“BW
1

08

dB’

STOP
188

HZ

Figure 2. Error Correction Routine Data

8 Overall Troubleshooting

ino
SWP

0
i

Table 2. Error Correction Routine Parameters

Liue

Parameter

1

Specification

Troubleshooting
Information

LOG and LIN scale, BW 

415
:ONTROLLER

8
f
ST-5

I

J1
.
//o-1ov
RAMP

DAC
c

rYHEN THE OUTPUT OF THE COMPARATOR
GOES HIGH. THE RAMP OAC REGISTER
AND THE SWEEP ADDRESS ARE
INCREMENTED AN0 THE DISPLAY DATA
FOR THAT MEMORY LOCATION IS
“P-DATED.
IF THE SWEEP ADDRESS
EQUALS THE MARKER VALUE (USUALLY
SET TO THE END OF SWEEP POSITION).
4 RESET HIGH SWEEP OUTPUT. RSHS.
IS GENERATED.

412 FRONT-PANEL INTERFACE

!

v+
f

0
1

SET

RESET

STOP

FAST
SWEEP
LINE
EXT
VIDEO

PROCESSOR

Figure 4. Sweep System Block Diagram

Overall Troubleshooting 15

Analog Troubleshooting
Phase Lock Loops Principles of Operation
General Description
The fundamental RF signal input to the A6 RF Module (2 to 6.2 GHz) is generated by the
AllA YTO (YIG-Tuned Oscillator). This signal is phase-locked, through other phase-lock
loops, to the A22 10 MHz Standard (internal crystal oscillator). The YTO Loop pretunes and
locks the YTO signal to the output of the M/N Loop (part of A7) and the A10 20/30 Loop.
The M/N and 20/30 Loops serve two basic functions. First, they phase-lock the YTO Loop
to the 10 MHz Standard through the Reference Loop (part of A7). They also provide the
stepped tuning of the YTO output signal. The M/N Loop provides the larger steps (2000 to
6199 MHz in 10 MHz steps) while the 20/30 Loop provides the smaller (1 MHz to 1 Hz) steps.
All phase lock loops are referenced, either directly or indirectly, to the A22 10 MHz Standard.
Figure 1. shows the relationship between the various loops as well as defining the assemblies
associated with the loops.
20 MHz
4
3 . 3

GHz

165-

t

fYTO
2 . 3 - 6 . 1 GHZ
(200N-1 O M - f20/30)

HETERODYNE

100 MHz

,1

I
REFERENCE
LOOP
(A7Al.A7AZ)

lf:%fo;Hz

10 MHz and 100 MHz

PLLl & PLL3
) (AlOAl-AlOA4)

10 MHz

PLL2
b (AIOAS-~10~8)

10 MHz
10 MHz
STANDARD

(A2’J)

Figure 1. Phase Lock Loops (Synthesizer), Block Diagram
Analog Troubleshooting 1

Reference Loop (Part of A7)
The Reference Loop is phase-locked to the A22 10 MHz Standard and its phase-locked
outputs (10, 20, 100, and 400 MHz) are used as references for the 20/30 Loop, the M/N
Loop, and the Heterodyne Loop (part of A6). The 10 MHz signal is also used as an auxiliary
rear-panel output.
The A7A2 100 MHz VCXO (Voltage-Controlled Crystal Oscillator) is the heart of this loop.
The 100 MHz output signal is 1) routed to the A6A9 Phase Lock assembly to be used as a
reference for the Heterodyne Loop and as the front-panel CAL OUTPUT signal, 2) routed
to the AlOA3 PLL3 Up Converter to be used as a reference for that phase-lock loop, 3)
multiplied by four to produce the reference signal for the M/N Loop (A7A3 M/N Phase
Detector), and 4) divided by five to produce a 20 MHz reference signal also used by the M/
N Loop. The 20 MHz signal is divided by two to produce a 10 MHz signal which is used
as a reference for the PLLl and PLL2 phase-lock loops in the 20/30 Loop and also as the
rear-panel auxiliary output. The 10 MHz signal is also phase compared to the output of the
A22 10 MHz Standard. The resulting error signal is used to tune the 100 MHz VCXO to
phase-lock the Reference Loop.

M/N Loop (Part of A7)
The frequency output of the M/N Loop is dependent on the front-panel Start
Frequency/Center Frequency and in part, controls the YTO output frequency. This signal is
disabled during sweeps when the frequency span is greater than 5 MHz (fundamental mixing).
An encoded equivalent of the front-panel frequency’s most significant digits are input to the
M/N Loop as M and N numbers. The ratio of the M and N numbers determines the M/N
OUT (fM,N) frequency and are chosen such that the Nth harmonic (same as the divider
number) of fM/N tunes in exactly 10 MHz increments as M is changed. There is one 10 MHz
step for each valid fM/N frequency (M/N ratio) and Nth harmonic (N number). Refer to Table
2 for a complete list of M and N numbers and resulting fM/N frequencies. This 10 MHz step
complements the 20/30 Loop whose tuning range is 10 MHz and step size is 1 Hz. Together,
the M/N loop, YTO pretuning, and 20/30 Loop are able to tune the AllA YTO from
2000.000 000 to 6199.999 999 MHz in 1 Hz steps.

YTO Loop (All)
Whenever a change is made to the Start Frequency/Center Frequency (from the front panel
or remote controller), the YTO is pretuned near the desired new frequency. This is done
by encoded information being sent from the Al2 Front-Panel Interface to the A19 DAC
(Digital-to-Analog Converter) which generates and routes an analog voltage to the A20 Main
Coil Driver. The Main Coil Driver, in turn, generates a tuning current to tune the YTO. This
places the YTO frequency 20 to 30 MHz below the Nth harmonic of the M/N Loop output
(fM,N). For frequency spans greater than 5 MHz, the YTO frequency is locked at the start
of each sweep with the M/N loop and the 20/30 loop to a 1 Hz resolution. The YTO signal
(fYTO) and the M/N Loop output signal (fM,N) are mixed in the AllA Sampler (harmonic
mixer) to produce the YTO IF (fYT~JIF) signal. This 20 to 30 MHz signal is phase compared
to the 20/30 Loop output signal (f2e,ao) in the AllA YTO Phase Detector producing a dc
error voltage. It should be noted that fYTC)IF and fze/se are equal when the YTO Loop is
phase-locked. This error voltage is stored in a capacitor, the loop (YTO) opened, and a sweep
taken. The loop is relocked at the start of each sweep. If the frequency span is less than 5
MHz, the YTO Loop is always locked and is forced to sweep by following the swept oscillator
2 Analog Troubleshooting

reference (fzoise) from PLL2 in the 20/30 Loop which is either applied directly to the YTO or
divided down and summed into PLL2 and PLLl and then applied to the YTO.
When the frequency span is less than 25 kHz, the loop gain of the YTO Loop is increased
by approximately 10 dB to provide better performance. This is performed by control signal
HYGH (High = YTO Loop G ain High) being placed in a High state.

20/30 Loop (AlO)
The 20/30 Loop translates tuning data for the seven least significant digits of the YTO
frequency (2 to 6.2 GHz) into frequencies from 30 to 20.000 001 MHz. This translation is
quite straightforward and the resulting output frequency can be calculated by the following
equation:
f2c,/ao= 30 - xxxx xxx MHz
where xxxx xxx is the seven least significant digits of the YTO frequency.
This process of frequency translation is used to tune the YTO over a 10 MHz range in 1 Hz
steps (1 Hz steps in zero frequency span) and uses three complete phase-lock loops (PLLl,
PLL2, and PLLS) to achieve this.
Phase Lock Loop 2 (PLL2) provides a low-frequency (20 to 30 MHz) reference (fze,se) to
the YTO Loop for frequency spans between approximately 100 kHz and 5 kHz. This loop is
locked at the start of each sweep, the error voltage stored in a capacitor, the loop unlocked,
and a sweep taken. For frequency spans of less than approximately 100 kHz and greater
than 5 kHz, the 20 to 30 MHz output is divided by 5 and applied as an input to Phase Lock
Loop 3 (PLLS) and Phase Lock Loop 1 (PLLl). T he output of PLLl/PLLS then serves as
the reference input (f20,30) to the YTO Loop. If the frequency span is 5 kHz or smaller, the
output of PLL2 is divided by 100 and applied to PLL3.

Heterodyne Loop (Part of A6)
The Heterodyne Loop (A6A9) consists of a 3.3 GHz oscillator located in the A6A4 Second
Converter that is locked to the 100 MHz VCXO in the A7A2 assembly. The 100 MHz
signal drives the Sampler in the A6A9 Phase Lock assembly which produces a dc output
proportional to the phase difference between the 33rd harmonic of 100 MHz and the 3.3 GHz
oscillator output signal being sampled. This dc output is amplified and used to drive the 3.3
GHz oscillator to achieve phase lock. If the loop is unlocked, a search oscillator (in the A6A9)
turns on and sweeps the 3.3 GHz VCO until phase-lock is again achieved. The Heterodyne
loop is used only for start frequencies of less than 2 GHz.

Analog Troubleshooting 3

Troubleshooting Information
Troubleshooting Table
Table 1 correlates CRT phase-lock error messages with the probable faulty phase-lock loop
and associated assemblies. This is especially helpful in determining the faulty loop when more
than one phase-lock error message is displayed.
Table 1. Troubleshooting Using CRT Unlock Messages
Message
(UNLOCK)

Probable Faulty Loop Associated Assemblies

PLl

Phase Lock Loop 1

AlOAl to AlOA4

PL2

Phase Lock Loop 2

AlOA5 to AlOA8

REF

Reference Loop

A7A1, A7A2, A22

YTO

YTO Loop

A19, A20, A21, All

M/N

M/N Loop

A7A3, A7A4

HET

Heterodyne Loop

A6A9, A6A4

PLl, PL2

Phase Lock Loop 2

AlOA5 to AlOA8

PLl, YTO

Phase Lock Loop 1

AlOAl to AlOA4

PLl, PL2, YTO

Phase Lock Loop 2

AlOA5 to AlOA8

REF, PLl, PL2

Reference Loop

A7A1, A7A2, A22

REF, M/N, YTO Reference Loop

A7A1, A7A2, A22

M/N, YTO

M/N Loop

A7A3, A7A4

HET, REF

Reference Loop

A7A1, A7A2, A22

Start Frequency Tuning Equations and Phase Lock Troubleshooting
General
Phase-lock loop troubleshooting is much easier if it is understood how the start frequency
is derived. The Diagnostic Functions of the spectrum analyzer can also be used to simplify
troubleshooting of the phase-lock loop.
The simplified block diagram at the back of this chapter shows the assemblies involved in
setting the start frequency. The HP 8566B has two tuning modes. For frequency spans
greater than 5 MHz, a method called lock and roll is used. This basically involves phase
locking the analyzer start frequency during the retrace period prior to the beginning of a new
scan. For frequency spans of 5 MHz and less, the YTO Loop is phase-locked during all of a
sweep, and the stable 20/30 Loop PLL2 is swept.

4 Analog Troubleshooting

The equation for start frequency is:
fSF (B W X fM/N - fm/m)) + fIF

Where:
fsF = Start Frequency
B = band number. KSR displays the value of B which varies from 0 to 4. When the
displayed value is 0 (low band), use 1 as a multiplier.
N = N number for M/N Loop. KSR displays the value of N which varies from 11 to 32.
fM,N = M/N loop frequency in MHz. KSR displays the value which ranges from 177 to 197
MHz.
f20/30 = Synthesizer frequency in MHz. KSR displays the value which ranges from 20 to 30
MHz.
fIF = Signal IF frequency. The value is -3621.4 MHz for band 0, -321.4 MHz for band 1,
and +321.4 MHz for bands 2, 3, and 4.
For a detailed explanation of the Frequency Diagnostic Function (KSR), see
Diagnostic Functions in the Spectrum Analyzer Overall Troubleshooting
Section of this manual.

Note

As an example, these values are used following an INSTR PRESET ([a] pressed) to
determine the start frequency.
B

=

l

N=13

fM/N 180.769231 MHz
f2elsu= 28.600000
fIF= -321.4 MHz
Substitute these values into the equation.
fSF = (1 x(13 x 180 x 769231 MHz) - 28.600000 MHz) - 321.4 MHz = 2000.0 MHz

M/N Loop Tuning
The frequency output of the M/N Loop is dependent on the ratio of M and N numbers. These
numbers are input in the form of digital tuning information to the M/N Loop Phase Detector.
The following equation shows the relationship between the output frequency and the M and N
numbers.
fM/N = (200 - lO(M/N)) MHz
Where:
fM/N = M/N output frequency
M = M number which varies from 8 - 27. KSR displays the value of M.
N = N number which varies from 11 - 32. KSR displays the value of N.
The M and N numbers are selected such that the M/N Loop output pretunes the YTO
frequency in 10 MHz steps. For a listing of the M and N numbers, M/N output frequencies
Analog Troubleshooting 5

(fM/N), and the YTO frequencies, refer to Table 2, M and N Numbers and Resulting
Frequencies.

20/30 Synthesizer Tuning
When a start frequency change occurs, the YTO is pretuned near the new desired frequency
by the A19 Digital-Analog Converter and A20 Main Coil Driver. This places the YTO
frequency 20 to 30 MHz below the Nth harmonic of the M/N Loop output. (The Nth
harmonic is the same as the M/N Loop’s N number.) The YTO frequency and the M/N Loop
harmonic are mixed in the AllA Sampler. The YTO IF (20- 30 MHz) is phase compared
with the 20/30 Synthesizer output. The AllA Phase Detector’s error voltage is then used
to tune the YTO through the A21 FM Coil Driver and the A20 Main Coil Driver to achieve
phase-lock.
The 20/30 Synthesizer is used to pretune the YTO in 1 Hz steps (in zero frequency span)
through a 10 MHz range. The following formula expresses the relationship between the
frequencies found in the YTO Loop.
&o/so (N x fM/N) - f0 = fYTOIF

Where:
f2u,su = 20/30 Synthesizer frequency. (Displayed with KSR.)
N = N number, varies from 11 - 32. (KSR displays value of N.)
fM/N = M/N Loop frequency
fo = YTO frequency
fYToIF = YTO IF frequency
The 20/30 Synthesizer frequency can also be determined by using the YTO frequency set.
This frequency is available by using KSR. In this case,
f2,,/s,, = (30.000000 - D7 D6 Ds D4 Ds Dz Dr)
Where:
Dr to Dr is the YTO frequency displayed with Dr being the least significant digit (1 Hz).

Marker Mode
When the MARKER @GG) mode is selected, the analyzer does the following. First, the
center frequency is determined. Because the @GGiJ marker is a display marker, after the
center frequency is calculated, the position of the marker on the display is determined. By
knowing that the display consists of 1000 points and the programmed frequency span, the
processor calculates the offset between the center frequency and the marker. The frequency
span accuracy is the major cause of error in the readout accuracy of the MARKER (NORMAL]
mode.

6 Analog Troubleshooting

Phase Lock Loop Troubleshooting
If one of the phase-lock error messages appears, a loop has failed. Start the troubleshooting
procedure by determining if the malfunction is dependent on Center Frequency, Frequency
Span, etc. Next, break the suspected loop and measure the power levels as indicated on the
RF Section Analog Block Diagram. Even with the oscillators at the extremes of their ranges,
the power levels must be within the limits indicated. The loop frequencies can be counted and
compared with the programmed frequencies listed by KSR by inserting a tee connector into
the loop.
The Lock Indicator Disable jumper (A12TP2 to A12TP3) may be necessary if the keyboard
is locked out. Use the information from the Diagnostic Function and the Start Frequency
Tuning Equations to narrow the fault to a single assembly.

Analog Troubleshooting 7

Gu!~ooqsalqnoJ~

SapuanbaJj Bugnsa+j pue SJaqWlN N pue LN ‘Z alqel

f3oleuv 8

Table 2. M and N Numbers and Resulting Frequencies (continued)

2860

11

15

192.666667

3160

21

17

187.647059

2870

10

15

193.333333

3170

20

17

188.235294

2880

9

15

194.000000

3180

19

17

188.823529

2890

8

15

194.666667

3190

18

17

189.411765

Analog Troubleshooting 9

BugooqsalqnoJl

(panuguo3) sa!manbaJj Guglnsati pue

SJXjUIllN N

pue w ‘I alqel

Boleuv 01

Table 2. M and N Numbers and Resulting Frequencies (continued)

Analog Troubleshooting 11

Table 2. M and N Numbers and Resulting Frequencies (continued)

4660

11

24

195.416667

4960

21

26

191.923077

4670

10

24

195.833333

4970

20

26

192.307692

4680

9

24

196.250000

4980

19

26

192.692308

4690

8

24

196.666667

4990

18

26

193.076923

12 Analog Troubleshooting

Table 2. M and N Numbers and Resulting Frequencies (continued)

5260

11

27

195.925926

5560

21

29

192.758621

5270

10

27

196.296296

5570

20

29

193.103448

5280

9

27

196.666667

5580

19

29

193.448276

5290

8

27

197.037037

5590

18

29

193.793103

Analog Troubleshooting 13

Table 2. M and N Numbers and Resulting Frequencies (continued)

14 Analog Troubleshooting

-----------P--P-r
1I
CONYERTER
FIRI ST CONVERTER
I
I
I
I
ILAST CONVERTER I
A6 RF MODULE

I
I

SECONO

L_,

r

GHZ
300MHZ
‘FEE
Ef?i?

I r-4-

__----m---w--- 1

A7 M/N REFERNCE

I

400 MHZ

I
I
I

5.1.4MHZ.
al &yo I
I
I

I
/I

20 MHI

I
I
I

r

,lfoI
I

__------A

I

1

I

I
I

RF
I
I
I------11

I
& ?073=?Hb=
I
10 MHZ
10 MHZ
I

I
,d

Simplified RF Block Diagram

Digital Troubleshooting
Preliminary Checks
Instrument Preset Check
The two red INSTR CHECK LEDs light whenever the instrument is turned on or when
@Z-Z@ is pushed. The main processor then performs a check of itself, a checksum
verification of all ROMs on the Al5 Controller, a partial check of the Instrument Bus (50-wire
bus), and a read-write check of the RAMS and A3A4 Memory in the IF-Display Section.
If all the checks pass, both INSTR CHECK LEDs turn off.
If any check fails, one or both INSTR CHECK LEDs remain on.
Both INSTR CHECK LEDs on indicates a problem with the Al5 Controller. First, remove
the Controller and make sure that the 50-wire ribbon cable and HP-IB ribbon cable are
pressed all the way onto A15Jl and A15J2 connectors. Reinstall the Al5 Controller. If both
front panel INSTR CHECK LEDs still remain on when the instrument is turned on, follow
procedure under Al5 Controller Self Test.
Left LED (INSTR CHECK I) on indicates a failure occurred when checking the Digital
Storage Memory (A3A4). First, check to ensure that a LINE power cord is connected to the
IF-Display Section. Also check to see that the rear-panel Analyzer Bus Interconnect Cable,
W31, is properly connected. If INSTR CHECK I still remains on when the instrument is
turned on, troubleshoot the A3 Digital Storage in the IF-Display Section.
Right LED (INSTR CHECK II) on indicates a failure occurred during the partial check of
the Instrument Bus.

Note

n

The partial interface check reads the key column lines (KC0 through KC7)
from the Al and A5 front panels. If any front panel key is shorted or stuck
closed, INSTR CHECK II LED should remain on after the Self Test is
completed. This part of the Self Test can easily be verified by pushing any
key, except CLCL), and holding the key in while pushing (2-22). If the I/O
interface check routine is working, INSTR CHECK II LED will stay on.

Suspected digital failure but no INSTR CHECK LEDs on may indicate a RAM or I/O bus
failure which is not checked in the normal Self Check or “POP” (Power-On Preset). If the
two front panel INSTR CHECK LEDs turn on when the LINE switch is set to ON, and
turn off again within a few seconds (indicating no digital problems), but symptoms persist
(such as improper CRT display or improper response to particular commands) indicating
that the problem is in the digital area, a “LONG POP” can be performed.

Digital Troubleshooting 1

“LONG POP” Instrument Preset Check
This check is very similar to the normal Instrument Preset Check: an additional processor
check is performed, all of the RAM locations in Digital Storage (A3A4 Memory) are checked,
and the RAM memory on the Al5 Controller is verified.
Since these more extensive checks require altering information that has been stored in RAM,
LONG POP requires an internal jumper on the Al5 Controller. To perform a LONG POP:
n

Set the LINE switch to STANDBY.

w Place a jumper between ST or STS to T3
q

q

q
n

On Al5 Controller (HP part number 85660-60209) jumper A15TP4 (STS) to A15TPl-7
PO
On Al5 Controller (HP part number 85660-60245) jumper A15TPl-9 (ST) to A15TPl-8
P-3).
(Refer to Al5 Controller Component Location Diagrams for location of test points).

Set the LINE switch to ON.

When LINE switch is set to ON, the two red INSTR CHECK LEDs are forced on and the
main processor steps through the Self Test routine, expanding the normal POP with the
additional tests mentioned above. The expected results for a LONG POP are exactly the
same as for the normal POP of Instrument Preset as described above in the Instrument Preset
Check.
Because LONG POP is a “destructive test” (it alters any information that has been stored in
RAM), it should be performed only as a last resort effort in troubleshooting what appears to
be a memory or processor related problem.

Digital Storage Verification
The Instrument Preset Check does a fairly complete verification of the Digital Storage
controller and memory. An additional check can be done, independent of the RF section, by
jumpering A3A6TP3 to A3A6TP6 and pushing A3A7Sl momentarily. A test pattern should
appear on the display. Refer to the A3 Digital Storage Troubleshooting Section in the HP
856628 IF-Display Section volume of the service manual for a more detailed description of
this procedure. Note that when the jumper is connected, the left check LED always stays
on following an INSTR PRESET, since in the test pattern mode, Digital Storage ignores all
instructions from the Al5 Controller.

2 Digital Troubleshooting

A5
A5 Front Panel, Circuit Description
The A5 Front Panel comprises the A5Al Keyboard, A5A2 Rotary Pulse Generator (RPG),
Instrument Check indicator LEDs, LINE power switch, STANDBY power indicator LED, and
CAL OUTPUT connector and cable. The RF INPUT, 1ST LO OUTPUT, and 321.4 MHz
IF INPUT and IF OUTPUT connectors are physically part of the A6 RF Module and are
described in detail in that section.

A5Al Keyboard
A5Al Keyboard includes the 49 pushbutton switches and 9 associated indicator LEDs on the
RF Section front panel.

Keyboard Switches @
Each of the normally open SPST switches consists of a spring-loaded contact and a pair
of printed-circuit board contacts. All but two of the keyboard switches are organized in a
matrix of rows and columns. When a front-panel key is pressed, the corresponding SPST
switch is closed, connecting a normally grounded key row to a key column. The grounded
key column signal is detected on the Al2 Front Panel Interface, signalling the Al5 Controller
to immediately halt the sweep. Then, the Al5 Controller polls (grounds) each of the key
rows sequentially (starting with key row 0) to identify the particular front panel key that is
pressed. During normal operation, the front-panel SWEEP LED can be observed to blink off
momentarily as the Al5 Controller halts the sweep, polls both the IF Section keyboard and
the RF Section keyboard, and then reacquires phaselock before continuing on with the sweep.

Indicator LEDs @
The nine keyboard indicator LEDs and the two INSTR CHECK indicator LEDs are lighted
selectively by the Al5 Controller to indicate the state of coupled functions, SIGNAL TRACK
(on/off), DATA entry (enabled/disabled), HP-IB control status (remote and addressed), and
self-test. U2 and U3 latch the LED data from the Data Bus. All front-panel LEDs are lighted
momentarily during the turn-on self test for verification.
The two INSTR CHECK indicator LEDs are lighted selectively by the Al5 Controller to
indicate the overall results of the most recent instrument self test. An instrument self test is
performed each time the LINE switch is switched to ON or the (INSTR PRESET] key is pressed.
Both LEDs are lighted at the start of each self test, and both are turned off upon successful
test completion; if one or both of the INSTR CHECK LEDs remain on, an instrument fault
has been detected. Refer to the Al5 Controller section for detailed information about the self
test.

A5 1

A5A2 Rotary Pulse Generator @J
A5A2 Rotary Pulse Generator (RPG) is operated by turning the front-panel DATA knob
in either direction. The rate and direction of knob rotation are encoded in the number
and relative phase of output pulses on the RPGl and RPG2 lines. These two signals are
decoded on the Al2 Front Panel Interface, enabling the Al5 Controller to gradually change
appropriate instrument settings.

LINE Power Switch @
When the LINE switch is in STANDBY, the LSBY (Low=STANDBY) line is grounded. If the
RF Section is connected to an ac power source, the +22 V dc supply lights the STANDBY
LED, holds the A23Kl Fan Relay in the off state, and powers the heater circuit of the A22A2
10 MHz Quartz Crystal Oscillator; all other power supplies are turned off. When the LINE
switch is switched ON, the A23Kl Fan relay is released to the on state (switching on the fan)
and LSBY rises to about +22 V dc (due to the Fan Relay coil). This enables the +20 V dc
supply on the Al7 Positive Regulator, which causes all the power supplies to turn on.

Front Panel Removal and Repair
With ac line cords removed, proceed as follows.
1. Remove interconnecting cables between instruments.
2. Position instrument on right side as shown in view A of Figure 1.
3. Remove feet @ from rear of RF Section by removing screws @ shown in view A of Figure
1.
4. Loosen bottom cover screw @ and remove cover.
5. Loosen thumbscrews @ and separate instruments by holding IF-Display Section in place
while pushing the RF Section at the front panel.
6. After separating instruments, slide RF Section away from IF Display Section far enough
to remove screws @ holding front panel to frame. Refer to view B of Figure 1.
7. Remove screws @ from other side of instrument. Refer to view C of Figure 1.
8. Pull front panel out of frame as shown in view D of Figure 1.
9. Disconnect cable @ from connector 0. Disconnect cable @J from connector 8. Refer to
view D of Figure 1.
10. To replace INSTR CHECK and STANDBY LEDs proceed as follows.
a. Unsolder the wires from the LED leads and push on the leads with a soldering aid to
force the LED out of the socket and through the front panel.
b. Insert a new LED and resolder as shown in Figure 2.
c. Trim excess lead length.

2 AS

(2 PLACES)

b
5

VIEW A

VIEW 6

VIEW C

VIEW D

Figure 1. Front Panel Removal and Repair

A5 3

LED LEAD IDENTIFICATION

..,I-:;;:;

STANDBY

INSTR CHECK I

*g;;;

1

~iz::~

INSTR CHECK II

Figure 2. LED Removal and Repair
11. To replace signal input LEDs, switches, or keys, proceed as follows.
a. Loosen set screw in DATA control knob (RPG) @@ using a number 4 allen wrench
(HP part number 8710-0857) and remove knob. Refer to Figure 3.
b. Remove nut from DATA control using a 7/16 inch wrench.
c. Remove 14 screws @@ and lift printed circuit board away from front panel. Refer to
Figure 3.
d. Pull defective LED out of socket with fingers (it may be necessary to pry slightly with
a pointed instrument such as a soldering aid), trim both leads on new LED to 3/B
inch (1 cm) and insert the new LED in the socket with negative (cathode) lead to the
square pad on the printed circuit board. Refer to LED lead identification below.
e. To remove the defective switch, remove the key from the switch, melt the plastic pins
holding the switch to the printed circuit board using a soldering iron, and remove the
switch from printed circuit board.
f. To replace the switch, insert the plastic pins of the new switch through the printed
circuit board and melt the pins with a soldering iron on the rear side of the printed
circuit board enough to secure the switch. Replace the key.
g. Reassemble the printed circuit board to the front panel and connect cables.
12. Reconnect the connectors removed in step 9.
13. Secure the front panel to the RF section by tightening six screws 0. Refer to views B and
C of Figure 1.
4 A5

14. Secure IF Display Section to RF Section, replace bottom cover, and reconnect ac line
cords.

Figure 3. Keyboard Removal and Repair

AS 5

HP Part Number 85660-60232
A5 Front-Panel

HP Part
Number

C
II

A5

85660-60232

8

1

FRONT PANEL ASSEMBLY
(SERIAL PREFIXES: 2410~-2511~)
(NOT AVAILABLE FOR FIELD REPLACEMENT)

28480

85660-60232

A5Al
A5A2

35660-60210
5060-0329

2
9

1
1

28480
28480

85660-60210
5060-0329

A5A2

3960-0684

2

1

28480

0960-0684

A5A2DSl
A5DSl

2140-0016
1990-0487

a
7

1
1

KEYBOARD ASSEMBLY
ROTARY PULSE GENERATOR
(SERIAL PREFIXES: 2410~-2430~)
ROTARY PULSE GENERATOR
(SERIAL PREFIXES: 2449A AND ABOVE)
LAMP, RPG (SERIAL PREFIXES: 2410~-2430~)
LED-LAMP LUM-INT=ZMCD BVR=5V

28480
28480

2140-0016
HLMP-1401

A5DS2
A5DS3
A5MPl
A5MP2
A5MP3

1990-0486
1990-0486
1370-3069
1510-1148
3624-0264

6
6
2
2
2

1
1
1
1
1

LED-LAMP LUM-INT=ZMCD IF=25MA-MAX BVR=5V
LED-LAMP LUM-INT=2MCD IF=25MA-MAX BVR=5V
RPG TUNING KNOB
RETAINER-PUSH-ON KB-TO-SHFT EXT
SCREW-TPG 4-40 .312-IN-LG 82 DEG

28480
28480
28480

HLMP-1301
HLMP-1301
0370-3069
669

45722

A5MP4
A5MP5
A5MP6
A5MP7
A5MPB

!190-0016
!200-0105
!950-0043
35660-00056
35660-00058

3
4
8
a
0

1
1
1
1
1

WASHER-LK INTL T 3/B IN .377-IN-ID
SCREW-MACH 4-40 .312-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM 3/B-32-THD .094-IN-THK
LOWER SUB PANEL
LOWER SUB PANEL DRESS

78189
77250
73743
28480
28480

28200-10-101
85660-00056
85660-00058

A5MP9
A5MPlO
A5MP12
A5MP13
A5MP14

~5680-00011
%5660-00071
15680-40004
)890-0706
1362-0227

1
1
3
1
1

KEYBOARD SUB PANEL
KEYBOARD SUB PANEL DRESS
LED MOUNT
TUBING-HS .093-IN-D/.046-IN-RCVD
CONNECTOR-SGL CONT SKT 1.14-MM-BSC-SZ

28480
28480
28480
06090
27264

856BO-00011
85660-00071
85680-40004
VERSAFIT-3/32-BLK
02-05-5216

A5MP15
A5Sl

.400-0249
1101-2193

1
1

CABLE TIE .062-.625-DIA .091-WD NYL
SWITCH-TGL PRI-SW SPDT 2A 250VAC SLDR-LU

59730
09353

TY-23M-8
UllJGOZG W/7868-14 W/5310

Reference
Designation

31
-

Description

Mfr
Code

Mfr Part
Number

1920-02

-

*Indicates factory-selected value

8566040232 Parts List
Page 1 of 1

HP Part Number 85660-60258
A5 Front Panel

HP Part
Number

C
c

A5

85660-60258

I

1

FRONT PANEL ASSEMBLY (SERIAL
PREFIX: 2516A)(NOT AVAILABLE FOR
FIELD REPLACEMENT)

28480

85660-60258

A5Al
A5A2
ASOSl
A5DS2
A5DS3

85660-60210
0960-0684
1990-0487
1990-0486
1990-0486

;

i
;
t
t

1
1
1
1
1

KEYBOARD ASSEMBLY
ROTARY PULSE GENERATOR
LED-LAMP LUM-INT=2MCD
LED-LAMP LUM-INT=2MCD
LED-LAMP LUM-INT=2MCD

28480
28480
28480
28480
28480

85660-60210
QEDS-8831
HLMP-1401
HLMP-1301
HLMP-1301

A5MPl
A5MP2
ASMP3
A5MP4
A5MP5

0370-3069
0510-1148
0624-0264
2190-0016
2200-0105

i
i
i
:
4

1
1
1
1
1

RPG TUNING KNOB
RETAINER-PUSH-ON KB-TO-SHFT EXT
SCREW-TPG 4-40 .312-IN-LG 82 DEG
WASHER-LK INTL T 3/B IN .377-IN-ID
SCREW-MACH 4-40 .312-IN-LG PAN-HD-POZI

28480

0370-3069
669

45722
78189
77250

1920-02

A5MP6
A5MP7
A5MPB
A5MP9
ASMPlO

2950-0043
85660-00056
85660-00112
85680-00011
85660-00113

E
E
7
E
E

1
1
1
1
1

NUT-HEX-DBL-CHAM 3/8-32-THD .094-IN-THK
LOWER SUB PANEL
LOWER SUB PANEL DRESS
SUB PANEL KEY BOARD
KEYBOARD PANEL DRESS

73743
28480
28480
28480
28480

28200-10-101
85660-00056
8566D-00112
85680-00011
85660-00113

A5MPll
A5MP12
A5MP13
A5MP14
A5MP15

5021-8699
65680-40004
0890-1186
0362-0227
1400-0249

C
4
2
1
a

1
3
1
1
1

KEYBOARD BEZEL
LED MOUNT
TUBING-HS .125-IN-D/.062-IN-RCVD
CONNECTOR-SGL CONT SKT 1.14-MM-BSC-SZ
CABLE TIE .062-.625-DIA .091-WD NYL

28480
28480
06090
27264
59730

5021-8699
85680-40004
VERSAFIT-l/B
02-05-5216
TY-23M-8

A5Sl

3101-2193

5

1

SWITCH-TGL PRI-SW SPDT 2A 250VAC SLDR-LU

09353

UllJ6OZG W/7868-14 W/531(

Reference
Designatior

zlt
-

Description

INPUT POWER: 5VDC
BVR=5V
IF=25MA-MAX BVR=5V
IF=25MA-MAX BVR=5\1

Mfr
Code

Mfr Part
Number

CLEAR

-

*Indicates facto y-selected value

85660-60258 Parts List
Page 1 of 1

HP Part Number 85660-60210
A5Al Keyboard
Reference
Designatior

HP Part
Number

Mfr
Code

Description

A5Al

85660-60210

A5AlCl
A5AlC2
A5AlDSl
A5AlDS2
A5AlDS3

0160-2055
0160-4832
1990-0487
1990-0487
1990-0487

,

A5AlDS4
A5AlDS5
A5AlDS6
A5AlDS7
A5AlDS8

1990-0487
1990-0487
1990-0487
1990-0487
1990-0487

;
;
;
;
i

A5AlDS9
A5AlEl
A5AlE2
A5AlE3
A5AlE4

1990-0487
1251-0600
1251-0600
1251-0600
1251-0600

A5AlE5
A5AlE6
A5AlE7
A5AlE8
A5AlE9

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

A5AlElO
A5AlEll
A5AlJl
A5AlMPl
A5AlMP3

1251-0600
1251-0600
1200-1205
5041-3929

A5AlMP4
A5AlMP5
A5AlMP6
A5AlMP7
ASAlMP8

Mfr Par!
Number

1

KEYBOARD BOARD ASSEMBLY

2848C

85660-60210

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20X 1OOVDC CER
CAPACITOR-FXD .OlUF +-10x 1OOVDC CER
LED-LAMP LUM-INT=2MCD BVR=5V
LED-LAMP LUM-INT=LMCD BVR=5V
LED-LAMP LUM-INT=2MCO BVR=5V

04222
28480
28480
28480

805-504 Y5V 1032
SAlOlC103KAAH
HLMP-1401
HLMP-1401
HLMP-1401

1
1
1
1
1

LEO-LAMP
LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP

28480
28480
28480
28480
28480

HLMP-1401
HLMP-1401
HLMP-1401
HLMP-1401
HLMP-1401

1
1
1
1
1

LED-LAMP LUM-INT=2MCD BVR=5V
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ

28480
27264
27264
27264
27264

HLMP-1401
16-06-0034
16-06-0034
16-06-0034
16-06-0034

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

1.14-MM-BSC-SZ SQ
1.14-MM-BSC-SZ SO
1.14-MM-BSC-SZ S(
1.14-MM-BSC-SZ SC
1.14-MM-BSC-SZ SC

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

1
1
1

27264
27264
00779

16-06-0034
16-06-0034
2-641610-z

1

CONNECTOR-SGL CDNT PIN 1.14-MM-BSC-SZ SC
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
SOCKET-IC 16-CONT DIP DIP-SLDR
NOT ASSIGNED
LED STAND OFF

28480

5041-3929

5041-3929
5041-3929
5041-3929
5041-3929
5041-3929

1
1
1
1
1

LED
LED
LED
LED
LED

28480
28480
28480
28480
28480

5041-3929
5041-3929
5041-3929
5041-3929
5041-3929

A5AlMP9
A5AlMPlO
A5AlMPll
A5AlPl
ASAlQl

5041-3929
5041-3929
5041-3929
1251-5549
1854-0477

1
1
1
1
1

LED STAND OFF
LED STAND OFF
LED STAND OFF
,DNN-POST TYPE .lOO-PIN-SPCG 50-CDNT
TRANSISTOR NPN 2N2222A SI TO-18 PD=SOOMW

28480
28480
28480
18873
04713

5041-3929
5041-3929
5041-3929
68025-650
2N2222A

A5AlRl
A5AlR2
A5AlR3
ASAlR4
A5AlSl

3757-0438
3698-3152
J698-3150
3698-7242
5060-9436

1
1
1
1
1

?ESISTOR 5.11K +-I% .125W TF TC=O+-100
tESISTDR 3.48K 1% .125W TF TC=O+-100
IESISTOR 2.37K 1% .125W TF TC=O+-100
lESISTOR 1.78K +-1% .05W TF TC=O+-100
iWITCH-PB SPST-NO MOM

19701
19701
19701
19701
71468

SFR25H
SFR25H
SFR25H
50635
5560-9436

A5AlS2
A5AlS3
A5AlS4
A5AlS5
A5AlS6

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

1
1
1
1
1

SWITCH-P8
iWITCH-PB
iWITCH-PB
iWITCH-PB
iWITCH-PB

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS7

jO60-9436

1

iWITCH-PB SPST-NO MOM

71468

5560-9436

i
[
[
c
c
n
Y
3

I

STAND
STAND
STAND
STAND
STAND

LUM-INT=EMCD
LUM-INT=2MCD
LUM-INT=2MCD
LUM-INT=ZMCD
LUM-INT=2MCD

CONT
CONT
CDNT
CDNT
CDNT

PIN
PIN
PIN
PIN
PIN

BVR=SV
BVR=5V
BVR=5V
BVR=5V
BVR=5V

OFF
OFF
OFF
OFF
OFF

SPST-NO
SPST-NO
SPST-NO
SPST-NO
SPST-NO

*Indicates factory-selected value

85660-60210 Parts List
Pap! 1 of 3

HP Part Number 85660-60210
A5Al Keyboard
Reference
Designation

HP Part
Number

C

D

m
-

Description

Mfr
Code

Mfr Part
Number

A5AlS8
A5AlS9
A5AlSlO
A5AlSll

5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7

1
1
1
1

SWITCH-PB
SWITCH-P8
SWITCH-P8
SWITCH-PB

SPST-NO
SPST-NO
SPST-ND
SPST-NO

MOM
MOM
MOM
MOM

71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436

A5AlS12
A5AlS13
A5AlS14
A5AlS15
A5AlS16

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-P8

SPST-ND
SPST-NO
SPST-NO
SPST-NO
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71462

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS17
A5AlS18
A5AlS19
A5AlS20
A5AlS21

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-P6
SWITCH-PB
SWITCH-PB
SWITCH-PB

SPST-NO
SPST-NO
SPST-NO
SPST-NO
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS22
A5AlS23
A5AlS24
A5AlS25
A5AlS26

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB

SPST-NO
SPST-NO
SPST-NO
SPST-NO
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS27
A5AlS28
A5AlS29
A5AlS30
A5AlS31

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-P6
SWITCH-PB
SWITCH-P8
SWITCH-PB

SPST-NO
SPST-NO
SPST-ND
SPST-ND
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS32
A5AlS33
A5AlS34
A5AlS35
A5AlS36

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB

SPST-NO
SPST-ND
SPST-NO
SPST-NO
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS37
A5AlS38
A5AlS39
A5AlS40
A5AlS41

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB

SPST-NO
SPST-NO
SPST-NO
SPST-NO
SPST-ND

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS42
A5AlS43
A5AlS44
A5AlS45
A5AlS46

5060-9436
5060-9436
5060-9436
5060-9436
5060-9436

7
7
7
7
7

1
1
1
1
1

SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB
SWITCH-PB

SPST-NO
SPST-NO
SPST-ND
SPST-NO
SPST-NO

MOM
MOM
MOM
MOM
MOM

71468
71468
71468
71468
71468

5560-9436
5560-9436
5560-9436
5560-9436
5560-9436

A5AlS47
A5AlS48
A5AlS49
A5AlUl
A5AlU2

5060-9436
5060-9436
5060-9436
1810-0229
1820-1196

7
7
7
5
8

1
1
1
1
1

SWITCH-PB SPST-NO MOM
SWITCH-PB SPST-NO MOM
SWITCH-PB SPST-NO MOM
NETWORK-RES B-SIP 330.0 OHM X 7
IC FF TTL LS D-TYPE POS-EDGE-TRIG CDM CL

71468
71468
71468
11236
01295

5560-9436
5560-9436
5560-9436
750-81
SN74LS174N

A5AlU3
A5AlU4
ASAlWl
A5AlW2

1820-1196
1810-0229
0757-0346
0757-0346

8
5
2
2

1
1
1
1

IC FF TTL LS D-TYPE PDS-EDGE-TRIG COM CL
NETWORK-RES a-SIP 330.0 OHM X 7
RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100

01295
11236
91637
91637

SN74LS174N
750-81
CMF-55-1, T-l
CMF-55-1, T-l

-

85660-60210 Parts List
Page 2 of 3

*Indicates factoy-selected value

HP Part Number 85660-60210
ASAI Keyboard
Reference
Designation
A5AlW3

HP Part
Number
1757-0346

sty
1

Description
RESISTOR 10 +-1X .125W TF TC=O+-100

*Indicates factory-selected value

Mfr
Code
91637

Mfr Part
Number
CMF-55-l. T-l

85660-60210 Parts List
Page 3 of 3

.

Jl

s,9 p-?J /Il;
rls2, I; )
*T
iI
PI DS4-1
0

I p1

923

524

;Y) Q
a
52s

l$kl
S26

527

S26

s30

1

s34
0 s33
1
938
8 537
rl
542

69

s41
1

546
47 545

s31
5321%
Q
3.-,
535

S36

s39

SKI

rl

543
$744 Q

J-L

A5Al Keyboard Component Locations, 85660-60210

A6

A6 RF Module Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

Removal
1. Remove ac line cords, separate instrument sections, and remove top, bottom, and right
side covers from RF Section.
2. Remove RF front panel. (See A5 Front Panel Removal procedure in A5 Front Panel
section.)
3. Remove two clips @) by removing four screws 0.
4. Remove five cables @ from A6 PC boards.
5. Remove A6 RF Module PC cover plate by removing six screws 0.
6. Disconnect coaxial cable @ at point shown.
7. Disconnect two ribbon cables @ from motherboard.
8. Remove five screws 0.
9. Slide the RF Module out from the mainframe.

Installation
10. Slide the RF Module into the mainframe; push coaxial cable @ in slightly so that it does
not get caught on the mainframe.
11. Replace five screws 0.
12. Reconnect two ribbon cables @ to motherboard.
13. Reconnect coaxial cable 0.
14. Replace A6 RF Module PC cover plate by replacing six screws 0.
15. Replace five cables @ to A6 PC boards.
16. Replace two clips @) by replacing four screws 0.
17. Replace front panel.
18. Replace top, bottom, and side covers, reconnect IF and RF Sections, and reconnect ac line
cords.

A6 1

Figure 1. A6 RF Module Replacement

2 A6

A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 2.

1. Remove front panel from RF Section. (See A5 Front Panel Section for front panel removal
procedure.)
2. A6Al Replacement
a. Slightly loosen connectors 0, 0, and 0.
b. Unsolder wires from the coaxial switch.
1 (brown) wire from input Q)
3 (orange) wire from input @@
2 (red) wire from input @
c. Release coaxial switch @ by removing two screws 0.
d. Remove coaxial switch from three cables by completely disconnecting at connectors 0,
0, and 0.
e. Resolder three wires to new coaxial switch.
f. Connect three cables to coaxial switch 0, 0, and 0. Do not tighten connectors.
g. Attach new coaxial switch to instrument with two screws 0.
h. Tighten connectors to coaxial switch.
3. A6A17 Replacement
a. Disconnect connectors @ and @) and remove A6A17 BPF from mounting clips.
b. Install new A6A17 BPF in mounting clips and reconnect connectors.
4. Replace front panel. (See A5 Front Panel Section for front panel replacement procedure.)

A6 3

(2 PLACES)

Figure 2. A6Al Coaxial Switch and A6A17 300 MHz BPF Replacement

A6A2 RF Attenuator Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 3.

Removal
1. Remove front panel from RF Section. (See A5 Front Panel Section for front panel removal
procedure.)
2. Remove top and bottom covers from RF Section.
3. Disconnect attenuator cables 0.
4. Remove two screws @ used to attach attenuator bracket to motherboard.
5. Remove two screws @ used to attach attenuator bracket to “totem pole” assembly.
6. Remove RF Module PC board cover by removing six screws @ and five cables @ (three
from A6A9 and two from A6A12).
7. Remove A6A9 leaving remaining cables attached.
8. Disconnect attenuator ribbon cable connector @ from motherboard.
9. Attenuator (attached to bracket) is now free. Remove from RF Module.
10. Remove attenuator bracket from attenuator by removing two screws 0.
4 A6

Installation
11. Attach attenuator bracket to attenuator by replacing two screws 0.
12. Place attenuator (attached to bracket) in RF Module.
13. Connect attenuator ribbon cable connector @ to motherboard connector.
14. Align attenuator connectors Q) with cable connectors and tighten cable connectors.
15. Replace two screws @ used to attach attenuator bracket to “totem pole” assembly.
16. Replace two screws @ used to attach attenuator bracket to motherboard.
17. Replace A6A9 Phase Lock assembly.
18. Install PC board cover and replace six screws 0.
19. Reconnect five cables @ (three to A6A9 and two to A6A12). Cables are color-coded and
color codes are marked on PC board cover.
20. Replace top and bottom covers on RF Section.
21. Replace front panel. (See A5 Front Panel Section for front panel replacement procedure.)

A6 5

P
1

2 PLACES)

2 PLACES)

Figure 3. Replacement of A6A2 RF Attenuator (1 of 2)

6 A6

9
6

7
4

4

(2 PLACES)

Figure 3. Replacement of A6A2 RF Attenuator (2 of 2)

A6 7

A6A4 Second Converter Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 4.

Removal
1. Remove ac line cords and RF Section bottom cover.
2. Disconnect connectors 0, @ and 0, single-pin connector 0, and double-pin connector @
from Second Converter.
3. Disconnect the remaining cables from Second Converter
1 (brown) cable from .321 OUT (7J
4 (yellow) cable from TUNE @
4. Remove two screws @ to remove Second Converter from A6 RF Module.

Installation
5. Position new Second Converter on mounting bracket. Secure with two screws 0.
6. Reconnect connector (ij, connector 0, single-pin connector 0, and double-pin connector @
to Second Converter.
7. Reconnect the following cables to Second Converter.
1 (brown) cable to .321 OUT 0
1 (brown) cable to .321 IN @
4 (yellow) cable to TUNE @
8. Replace bottom cover and ac line cords.

8 A6

PL ACE S)

Figure 4. A6A4 Second Converter Replacement

A6A6 First Converter Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 5.

Removal
1. Remove ac line cords, IF-Display Section, and RF Section top cover.
2. Remove two screws @ to release A6A6 First Converter from A6 RF Module. Disconnect
connectors @ from A6A6 First Converter.

Installation
3. Position new A6A6 First Converter in RF Module and reconnect connectors 0. Reinstall
two screws 0.
4. Replace RF Section top cover. Attach IF-Display Section to RF Section. Reconnect ac line
cords.

A6 9

(2 PLACES)

Figure 5. A6A6 First Converter Replacement

A6A15 3.6 GHz BPF, A6A16 LPF, and A6A18 LPF Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 6.

3

Removal
1. Remove ac line cords, separate instrument sections, and remove top and bottom covers
from RF Section.
2. Remove five cables Q) from A6 PC boards; three from A6A9 and two from A6A12.
3. Remove RF Module PC board cover by removing six screws 0.
4. Remove A6A9 assembly and A6A10, A6A11, and A6A12 PC boards.
5. Disconnect 4 (yellow) cable and 5 (green) cable from 2nd converter to release A6A9
assembly.
6. Disconnect coaxial cable @ between All YTO Loop and A6A5 ACLU at the ACLU.
7. Disconnect cable between A6A8 YTX and A6A5 ACLU at the YTX.
8. Disconnect cable between front-panel 1ST LO OUTPUT connector and A6A5 ACLU at
the ACLU.
9. Disconnect 1 (brown) cable from A6A4 2nd Converter .321 OUT.
10. Disconnect cable between A6A14 Limiter and A6Al RF Switch at the RF Switch.
11. Remove three screws @ used to attach ACLU cover plate one at a time, removing cable
clamp and reinstalling the screws.
12. Disconnect wire harness connectors from ACLU and 2nd Converter to release wire harness
from the “totem pole” assembly.

10 A6

13. Disconnect cable between front-panel IF OUTPUT connector and A6A5 ACLU at the
ACLU.
14. Disconnect cable between front-panel IF INPUT connector and A6A16 LPF at the LPF.
15. Disconnect wire harness plug from motherboard and position wire harness such that the
“totem pole” assembly can be removed.
16. Remove two screws @ attaching the “totem pole” assembly to the motherboard and two
screws @ attaching the “totem pole” assembly to the attenuator bracket.
17. Remove the “totem pole” assembly from RF Module.
18. A6A15, A6A16, OR A6A18 can now be replaced by disconnecting attached cables.

Installation
19. Replace A6A15, A6A16, or A6A18 in the “totem pole” assembly and reconnect cables.
20. Place the “totem pole” assembly in the RF Module.
21. Replace two screws @ to attach the “totem pole” assembly to the motherboard and two
screws @ to attach the “totem pole” assembly to the attenuator bracket.

Caution
9

The YIG-Tuned Mixer (YTX) contains an extremely small and sensitive
diode. A reverse voltage in excess of 3 volts may damage it. It is connected
directly to the center conductor of the LO/IF connector, and is especially
susceptible to blowout from electrostatic discharge. Before connecting any
cable to this connector, first discharge the cable by connecting the center
conductor to ground. It is recommended that the other end of the cable be
connected first. Once the cable is properly installed (from the YTX to the
ACLU), the BIAS pin of the ACLU is connected to the YTX diode and must
also be treated with caution. A general rule is to connect all devices to ground
before connecting them to the BIAS pin on the ACLU.

22. Reconnect cable to A6A8 YTX.
23. Reconnect cable to A6Al RF Switch.
24. Reconnect cable from front-panel 1ST LO OUTPUT to A6A5 ACLU.
25. Reconnect cable from front-panel IF OUTPUT to A6A5 ACLU.
26. Reconnect cable from front-panel IF INPUT to A6A16 LPF.
27. Reconnect cable @ between All YTO Loop and A6A5 ACLU.
28. Reconnect 1 (brown) cable to and converter .321 OUT.
29. Remove three screws @ from A6A5 ACLU cover plate one at a time replacing cable
clamps then replacing screws.

A6 11

30. Reconnect all wire harness connectors to A6A5 ACLU and A6A4 2nd Converter as
follows.
A6A4 2nd Converter

n

green (5) Wire to IE
white/brown (91) wire to V,
white/black (90) wire to SW
n

A6A5 ACLU
gray (8) wire to BIAS
white/red (92) wires to +5 V dc (three pins)

31. Reconnect wire harness to motherboard.
32. Replace A6A9 assembly and A6A10, A6Al1, and A6A12 PC boards.
33. Replace PC board cover and install six screws 0.
34. Reconnect 4 (yellow) cable and 5 (green) cable to 2nd Converter.
35. Reconnect five cables 0 to A6 PC boards; three to A6A9 and two to A6A12.
36. Replace top and bottom covers on RF Section, recombine instrument sections, and
reconnect ac line cords.

12 A6

I

II’

(3 PLACES)

TOTEM POLE
ASSEMBLY
/

A6A4
SECOND
CONVERTER

A6A5
ACLU

A6A16
1 . 5 GHz
LPF

A6A18
4 . 0 GHz
LPF
(CABLE)

d
5

(2 PLACES)

6
0
(2 PLACES)

A6i15
3 . 6 GHz
BPF

AiA6
F I RST
CONVERTER

Figure 6. A6A15 BPF, A6A16 LPF, and A6A18 LPF Replacement

A6 13

A6All
A6W16

A6AlO
A6W12

A6W17

A6A9A1 DSI
UNLOCK
INDICA ,TOR

WI
Wll

A6W15

A6W19
A6W3
A6W14

A6W12

A6W18

-j---- A6A8

A6A3

A6W6

A6A4

A6A7

A6W15

A6Wll
A6W2

‘TOTEM POLE’
ASSEMBLY (SEE
SHEET 3 OF
THIS FIGURE)

A6A14
A6’i’l

A6i2

A6’ilO

A6W8

A6W13 A6W7

A6W23 A6W20

Figure 7. A6 RF Module, Parts Identification (1 of 6)

14 A6

A6A13
/

3

P
2

3

0

/o

5

(3 PLACES)

(2 PLACES)

$
10
11

Figure 7. A6 RF Module, Parts Identification (2 of 6)

A6 15

A6A4

(2 PL

A6W13
ROUTES TO
FRONT PANEL

A6Al5/[
7

,/.A/-

\

6

(2 PLACES) (2 PLACES)

Figure 7. A6 RF Module, Parts Identification (3 of 6)

16 A6

\

‘A6A18

(2 PLACES)

(2 PLACES)

A6J2
A6J3

A6J4

A6J.5

A6Jl

9(2 P L A C E S )

\

,@(6

PLACES)

A6W20

A6W2

A6W3

(2 PLACES)

Figure 7. A6 RF Module, Parts Identification (4 of 6)

A6 17

A23W6

(6 P L A C E S )
0
v
,A1
w

A23W7 A
PLACES)

46W7

lo

A6A18

PLACES)
I

/
7

/
36

0

1

I I

-d

w

I

I

.!A6

\

i
(2 PLACES)

(2 PLACES)

Figure 7. A6 RF Module, Parts Identification (5 of 6)

18 A6

Iten

HP Part
Number

Description

:I:

Mfr
Code

M f r Pari
Number

1

0400-0009

9

GROMMET, RUBBER (FOR W2)

28480 04004009

2

8566900021

6

AIR DUCT, RF MODULE

28480 85660-0002

3

8566@0001,

9

BRACKET, MAIN, RF MODULE

28480 85660-0001

4

2360-0116

5

SCREW, MACH, 632, .312-IN LG, FLAT HD

28480 2360-0116

5

856690002:

9

HEAT SINK, YTX CURRENT DRIVER

28480 85660-0002

6

0520-0137

8

SCREW, MACH, 2-56, .75-IN LG, PAN HD

28480 0520-0137

7

2190-0890

1

WASHER, SPLIT, 2-56 (FOR SCREWS (6) & (15))

28480 2190-0890

8

1400-0053

4

CABLE CLAMP (FOR SCREW (10))

28480 1400-0053

9

B566&0002:

7

MOUNTING PLATE, 2ND CONVERTER

28480 85660-0002

10

2200-0145

2

SCREW, MACH, 4-40, .43&IN LG, PAN HD

28480 2200-0145

11

2190-0003

8

WASHER, SPLIT, 4-40 (FOR SCREWS (10) & (27))

28480 2190-0003

12

3050-0105

6

WASHER, FLAT, 4-40 (FOR SCREWS (10))

28480 3050-0105

13

1400-0942

0

COMPONENT CLIP (FOR A6A16)

28480 14009942

14

356692007:

0

MOUNT, MICROCIRCUIT, “TOTEM POLE”

28480 85660-2007

15

3520-0130

1

SCREW, MACH, 2-56, .375-IN LG, PAN HD

28480 0520-0130

16

2360-0115

4

SCREW, MACH, 632, .312-IN LG, PAN HD

28480 2360-0115

17

2200-0105

4

SCREW, MACH, 4-40, .312-IN LG, PAN HD

28480 2200-0105

18

35660-0007:

0

COVER, RF MODULE PC BOARD

28480 85660-0007:

19

35660-00051

1

BRACKET, CONNECTOR, RF MODULE

28480 85660-0005.

20

1360-0119

8

SCREW, MACH, 632, .438-IN LG, PAN HD

28480 2360-0119

21

2360-0122

3

SCREW, MACH, 632, .5-IN LG, FLAT HD

28480 2360-0122

22

1360-0117

6

SCREW, MACH, 632, .375-IN LG, PAN HD

28480 2360-0117

23

3050-0010

2

WASHER, FLAT, 632 (FOR SCREW (22))

18480 3050-0010

24

1950-0154

2

NUT, HEX, l/2 IN (FOR A6Jl)

18480 2950-0154

25

1190-0054

9

WASHER, LOCK, l/2 IN (FOR A6Jl)

28480 2190-0054

26

1360-0113

2

SCREW, MACH, 632, .25-IN LG, PAN HD

18480 2360-0113

27

1200-0151

0

SCREW, MACH, 4-40, .75-IN LG, PAN HD

18480 2200-0151

18

L400-0937

3

COMPONENT CLIP (FOR A6A17)

!8480

14009937

29

$5660-00014

8

BRACKET, FRONT, RF MODULE

!8480

35660-0001~

30

!200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

!8480

2200-0103

31

:490-0968

9

PANEL BUSHING (FOR A6Rl)

!8480

14904968

32

!190-0027

6

WASHER, LOCK, .256 ID (FOR A6Rl)

!8480

2190-0027

$3

1590-0061

4

VUT, HEX, l/4 IN (FOR A6Rl)

!8480

1590-0061

34

!950-0132

6

VUT, HEX, 7/16 IN (FOR A6J3)

!8480

2950-0132

$5

!190-0104

0

WASHER, LOCK, 7/16 IN (FOR A6J3)

!8480

2190-0104

56

1566&00019

3

3RACKET, ATTENUATOR, RF MODULE

!8480

35660-0001’
1403-0152

s7

1403-0152

9

30ARD GUIDE, BLACK

18480

3403-0153

0

BOARD GUIDE, BROWN

28480 04030153

34030154

1
BOARD GUIDE, RED
-

28480 04030154

Figure 7. A6 RF Module, Parts Identification (6 of 6)

A6 19

-

Qty
-

-

Reference
Designator

HP Part
Number

CE

RF Module
Description

Mfr
Code

MD Part
Number

A6Al

31066029

2

1

RF SWITCH SPDT F SMA

28480

3106-0029

A6Al

85660-60101

0

1

RF SWITCH (OBSOLETE. ORDER HP PART NUMBER
8566@60228 FOR REPLACEMENT.)

28480

85660-60101

A6A2

B5660-60336

3

1

RF ATTENUATOR/ERROR CORRECTION ROM
(INCLUDES A12U8)

28480

85660-60336

A6A2

55660-60304

5

1

RF ATTENUATOR/ERROR CORRECTION ROM
(INCLUDES A12U8) (OBSOLETE. ORDER HP PART
NUMBER 8566669336 FOR REPLACEMENT.)

28480

85660-60304

A6A2

55660-60121

4

1

RF ATTENUATOR/ERROR CORRECTION ROM
(INCLUDES A12U8) (OBSOLETE. ORDER HP PART
NUMBER 8566969336 FOR REPLACEMENT.)

28480

85660-60121

A6A3

35660-60003

1

1

LAST CONVERTER ASSEMBLY (INCLUDES A6A3Al
LAST CONVERTER BOARD)

28480

B5660-60003

A6A3Al

35660-60002

0

1

BOARD ASSEMBLY, LAST CONVERTER (PART OF
A6A3 LAST CONVERTER ASSEMBLY. MAY NOT BE
ORDERED SEPARATELY.)

28480

8566~60002

A6A4

50867248

9

1

SECOND CONVERTER

28480

50867248

AGAS

50867133

1

1

AMPLIFIER/COUPLER/LOAD UNIT (ACLU)

28480

50867133

A6A6

50867247

8

1

FIRST CONVERTER

28480

50867247

A6A7

35669-60128

1

1

BOARD ASSEMBLY, YIG-TUNED MIXER CURRENT
DRIVER

28480

55660-60128

A6A8

50867226

3

1

YIG-TUNED MIXER (YTX) (NEW)

28480

5086-7226

A6A8

50866226

1

1

YIG-TUNED MIXER (YTX) (RESTORED 5086-7226)

28480

50866226

A6A9

35660-60256

6

1

PHASE LOCK ASSEMBLY (INCLUDES A6A9Al PHASE 2 8 4 8 0
LOCK BOARD) (SERIAL NUMBER PREFIXES: 2504A
AND ABOVE)

55660-60256

A6A9

35660-60226

0

1

PHASE LOCK ASSEMBLY (INCLUDES A6A9Al PHASE 2 8 4 8 0
LOCK BOARD) (SERIAL NUMBER PREFIXES:
2410A-2503A)

35660-60226

A6A9Al

35660-60253

3

1

BOARD ASSEMBLY, PHASE LOCK (SERIAL NUMBER
PREFIXES: 2504A AND ABOVE) (PART OF A6A9
PHASE LOCK ASSEMBLY. MAY NOT BE ORDERED
SEPARATELY .)

28480

35660-60253

A6A9Al

35660-60202

2

1

BOARD ASSEMBLY, PHASE LOCK (SERIAL NUMBER
PREFIXES: 2410A-2503A) (PART OF A6A9 PHASE
LOCK ASSEMBLY. MAY NOT BE ORDERED
SEPARATELY.)

28480

35660-60202

A6AlO

35660-60322

7

1

BOARD ASSEMBLY, MISCELLANEOUS BIAS/RELAY
DRIVER (SERIAL NUMBER PREFIXES: 2747A AND
ABOVE)

28480

35660-60322

A6AlO

35660-60180

5

1

BOARD ASSEMBLY, MISCELLANEOUS BIAS/RELAY
DRIVER (SERIAL NUMBER PREFIXES:2410A-2729A)

28480

35660-60180

A6All

35660-60238

4

1

28480

35660-60238

-

-

BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL
NUMBER PREFIXES: 2613A AND ABOVE)

20 A6

-

RF Module (continued)

HP Part
Number

ZL
-

Qt:
-

A6All

85660-60121

9

1

BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL
NUMBER PREFIXES: 2410A-2611A)

28481 cl 85660-6012e

A6A12

85660-60361

9

1

BOARD ASSEMBLY, YIG-TUNED MIXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 2936A AND
ABOVE)

2848(3 85660-60366

46A12

55660-6023!

1

1

BOARD ASSEMBLY, YIG-TUNED MIXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 2503A-2928A 1

Reference
Designato

Description

Mfr
,Cod’ e

Mfr Part
Number

2848(I 85660-6023
a

46A12

!35660-6001:

3

1

BOARD ASSEMBLY, YIG-TUNED MIXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 2410A-2449A)

1848(I 85660-6001

46A13

35660-6001~

4

1

BOARD ASSEMBLY, RF MODULE MOTHERBOARD

:1848(I 165660-6001

\6A14

5086-7261

6

1

LIMITER, 0-2.5 GHZ

:1848(1 5086-7261

i6A15

2135-0067

5

1

BANDPASS FILTER, 3.6 GHZ, SMA CONNECTORS

:!848( 1 !9135-0067

\6A16

1955-0487

2

1

LOW PASS FILTER, 1.0 GHZ (SERIAL NUMBER
PREFIXES: 2950A AND ABOVE)

;!848C 1 I39554487

16A16

5086-7299

0

1

LOW PASS FILTER, 1.5 GHZ (SERIAL NUMBER
‘REFIXES: 2410A-2949A)

2!848C 1 !5086-7299

16A17

3955-0117

5

1

3ANDPASS FILTER, 300 MHZ

2!848C I I1955-0117

i6A18

)135-0108

5

1

,OW PASS FILTER, 26 GHZ

2!848C ) !>135-0108

‘ART OF A6W16 (CAL OUTPUT)

k6Jl
16J2

1250-1666

8

1

iDAPTER-COAX, STR F-SMA F-SMA (FIRST LO
1UTPUT)

2!848C )I1250-1666

k6J3

%6290-60005

7

1

tF INPUT CONNECTOR, TYPE N (INDIVIDUAL
‘ARTS ARE LISTED IN GENERAL PARTS LISTING

21848C I f36290-6000

L6J4

.250-1666

8

1

iDAPTER-COAX, F-SMA F-SMR (IF OUTPUT)

21848C I I1250-1666

L6J5

250-1666

8

1

iDAPTER-COAX, F-SMA F-SMA (IF INPUT)

2‘8480 I IL250-1666

L6Rl

!lOO-1717

4

1

tESISTOR-VAR CONTROL CCP 50K 20% LIN

2‘8480 I :!lOO-1717

16Wl

15660-20073

7

1

:ABLE ASSEMBLY, COAX A6J3 RF INPUT TO A6A2
tF ATTENUATOR (0-22 GHZ)

2 84801 615660-6007:

k6W2

1566@20074

2

1

:ABLE ASSEMBLY, COAX A6A2 RF ATTENUATOR
r0 A6Al RF SWITCH (O-22 GHZ)

2 84801 E $5660-2007)

t6W3

;566G20075

3

1

:ABLE ASSEMBLY, COAX A6Al RF SWITCH TO
i6A8 YTX (2-22 GHZ)

2 8480 E!5660-2007!

~6W4

;5660-20079

7

1

:ABLE ASSEMBLY, COAX A6A14 LIR4ITER TO A6A6
ST CONVERTER (O-2.5 GHZ)

2 8480E !5660-2007!

~6W5

;5660-20076

4

1

:ABLE ASSEMBLY, COAX A6A8 YTX TO/FROM
L6A5 ACLU

2 8480 815660-20076

16W6

~5660-20077

5

1

:ABLE ASSEMBLY, COAX AT2 3DB ATTENUATOR
‘0 A6A5 ACLU (YTO LOOP OUT)

2 8480 815660-2007:

,6W7

5660-20082

2

1

2 8480 8;5660-2008:

-

-

:ABLE ASSEMBLY, COAX A6A5 ACLU TO AGA6 IST
:ONVERTER (3.6 - 6.1 GHZ)

A6 21

RF Module (continued)
Reference
Designator

HP Part CD Qty
Number

Description

Mfr
Code

Mfr Part
Number

A6W8

85660-20104

9

1

CABLE ASSEMBLY, COAX A6A5 ACLU TO A6J2
(FRONT PANEL) (1ST LO OUTPUT)

28480 85660-2010~

A6WlO

85660-20081

1

1

CABLE ASSEMBLY, COAX A6A15 3.6 GHZ TO AFA4
SECOND CONVERTER (3621.4 MHZ) BPF

28480 85660-20081

A6Wll

85660-60055

3

1

CABLE ASSEMBLY, COAX 5 A6A4 SECOND
CONVERTER TO A6A9 PHASE LOCK (3.3 GHZ)

28480 856606005:

A6W12

85660-60097

3

1

CABLE ASSEMBLY, COAX 4 A6A9 PHASE LOCK TO
A6A4 SECOND CONVERTER (TUNE VOLTAGE)

28480 85660~6009:

A6W13

85660-20103

8

1

CABLE ASSEMBLY, COAX A6A5 ACLU TO A6J4
(FRONT PANEL) (IF OUTPUT)

28480 85660-2010:

A6Wl4

85660-20112

9

1

CABLE ASSEMBLY, COAX A6A16 LPF TO A6A4
SECOND CONVERTER (321.4 MHZ)

28480 85660-20112

46W15

8566960057

5

1

CABLE ASSEMBLY, COAX 1 A6A4 SECOND
CONVERTER TO A6A3 LAST CONVERTER (321.4
MHZ)

28480 8566060055

46W16

85660-60058

6

1

CABLE ASSEMBLY, COAX 0 A6A9 PIIASE LOCK TO
A6Jl (FRONT PANEL) (CAL OUTPUT)

28480 8566060058

46W17

85660-60056

4

1

CABLE ASSEMBLY, COAX 2 A6A9 PHASE LOCK TO
A6A17 300 MHZ BPF (300 MHZ)

28480 8566060056

16W18

85660-60054

2

1

CABLE ASSEMBLY, COAX 2 A6A17 300 MHZ BPF TO
A6A3 LAST CONVERTER (300 MHZ)

28480 8566060054

16W19

8120-2847

1

1

CABLE ASSEMBLY, 14 WIRE-RIBBON A6A13 RF
MOTHERBOARD TO A6A7 YTX CURRENT DRIVER

28480 8120-2847

i6W20

1250-1397

2

1

ADAPTER-COAX A6Al RF SWITCH TO A6A14
LIMITER (O-2.5 GHZ)

28480 1250-1397

i6W21

85660-60060

0

1

CABLE ASSEMBLY, A6Al/A6A4/A6A5/AGRl
HARNESS TO A6A13 RF MOTIIERBOARD

28480 8566060060

\6W22

85660-20101

6

1

CABLE ASSEMBLY, COAX A6J4 (FRONT PANEL) (IF
OUTPUT) TO A6J5 (FRONT PANEL)(IF INPUT)
(FRONT PANEL JUMPER)

28480 85660-20101

i6W23

85660-20102

7

1

CABLE ASSEMBLY, COAX A6J5 (FRONT PANEL)(IF
INPUT) TO A6A16 LPF (321.4 MHZ)

28480 85660-20102

22 A6

A6A3
A6A3 Last Converter, Circuit Description
The Last Converter has three main purposes:
1. Converting the 321.4 MHz IF signal from the A6 RF Module down to 21.4 MHz for
processing by the IF-Display Section.
2. Providing the means for correcting for variations in conversion loss versus frequency in the
input circuitry.
3. Filtering out 278.6 MHz image response.
The Last Converter consists of 11 basic elements. They are a 321.4 MHz amplifier, a 321.4
MHz bandpass filter, a 321.4 to 21.4 MHz converter a 21.4 MHz preamp, two pin diode
attenuators, two pin diode controlled variable gain amplifiers, an output stage, a temperature
compensation circuit, and power supply filtering.

Power Supplies @
The power supply filtering consists of series inductors and shunt capacitors (L21 to L24
and C49 to C53). In addition to this, R38 and VRl provide a 6.2 V source used for biasing
transistors.

321.4 MHz Amplifier @
The 321.4 MHz amplifier consists of Q8 and its associated circuitry. Q7 provides bias for QS
by setting the base current.

321.4 MHz Bandpass Filter @
The 321.4 MHz amplifier drives the 321.4 MHz bandpass filter which consists of L4 to L8
and C8 to C12. This filter is made up of five LC tank circuits coupled magnetically and
capacitively. Capacitive coupling occurs through PC board traces on the circuit side of the PC
board. Coupling into and out of the filter is done with tapped inductors L4 and L8. The filter
is tuned by means of C8 to C12. This filter rejects the 278.6 MHz image response.

321.4 to 21.4 MHz Converter @
The 321.4 MHz filter drives the 321.4 to 21.4 MHz converter. This converter consists of a
packaged double-balanced mixer, Ul. The 300 MHz LO for this converter comes from the
A6A9 Phase Lock.

A6A3 1

21.4 MHz Preamplifier 0
The 321.4 to 21.4 MHz converter drives the 21.4 MHz preamp which consists of Q6 and
its associated components. Q5 provides bias for Q6 by setting the base current. LlO, C22,
and C23 form a series resonant circuit producing a notch in the frequency response of this
amplifier at 10.7 MHz. This is to prevent the second harmonic of 10.7 MHz from causing a
spurious response.

Slope Attenuator @
The HP 8566 is a harmonic mixing spectrum analyzer, and as such has five bands of
frequencies to cover the range of 0 to 22 GHz. When changing from band to band, the
conversion loss of the input mixer changes. Also within each band there are variations of
conversion loss with frequency.
The variations of conversion loss within each band are compensated by pin diodes CR1 to
CR4 and associated circuitry. Pin diodes have a property of changing RF impedance as
their dc current is varied. Thus CRl/CR2 and CR3/CR4 form the two elements of a voltage
divider. The current through CRl/CR2 is fixed by RlO and Rll. The current through
CR3/CR4 is determined by circuitry on the A6All Slope Generator. This forms a current
controlled variable attenuator. Pin diodes CRl/CR2 are used in place of a fixed resistor to
provide temperature tracking with CR3/CR4.

Step Gain Amplifier 1 @ and Step Gain Amplifier 2 @)
The variations of conversion loss from band to band are compensated for by two identical
variable gain amplifiers made up of Q3 and QlO and associated circuitry (Q4 and Q9 are
emitter follower buffers). A simplified circuit of one of these stages is shown in Figure 1. The
gain of the amplifier is determined approximately by the following equation.
Gain M

Impedance (CR8, CR9, and CRlO)
Impedance (CR5, CR6, and CR7)

The impedance of CR8, CR9, and CR10 is determined by R23 and temperature compensation
circuitry (Ql).
The impedance of CR5, CR6, and CR7 is determined by the current from the step gain circuit
on the A6AlO Relay Driver.

2 A6A3

Q OUT

Figure 1. Step Gain Amplifier, Simplified Schematic

Amplitude Calibration Attenuator @
Q2 is an emitter follower buffer driving a second pin diode attenuator, CR11 to CR14. The
current through CR11 and CR12 is determined by the front-panel control A6R1, AMPTD
CAL. The current through CR13 and CR14 is fixed by R27. This circuit provides for
amplitude calibration of the instrument.

21.4 MHz Output @
Qll and Q12 form the output stage for the Last Converter. Qll is an emitter follower driving
a common emitter amplifier Q12.

Temperature Compensation Voltage Source @
Ql provides a voltage to set the current in CR8 to CR10 and CR15 to CR17. This voltage
varies with temperature, changing the gain of the two step-gain amplifiers to compensate for
gain changes with temperature elsewhere in the Last Converter.

A6A3

3

A6A3 Last Converter Replacement
For location of hardware and cables referred to in this procedure, see Figure 2.

Note

Removal
1. Remove ac line cords and RF Section bottom and right side covers.
2. Disconnect cables @: three from top of A6A9 Phase Lock assembly and two from A6A12
YTX Driver board.
3. Remove A6 RF Module PC cover plate by removing six screws 0.
4. Remove A6A9 assembly and A6Al0, A6Al1, and A6A12 PC boards from the A6 RF
Module. It is not necessary to disconnect the two cables (green and yellow) from the front
side of the A6A9 Phase Lock assembly.
5. Disconnect the following cables from the A6A3 Last Converter:
2 (red) cable @
1 (brown) cable @
81 (gray/brown) cable @
6. Remove two screws QJ and remove A6A3 Last Converter @ from RF Module.

Installation
7. When installing the A6A3 Last Converter, push Last Converter board into A6A13
Motherboard PC connector, replace two screws 0 and reconnect cables disconnected in
step 5.
8. Replace PC boards removed in step 4. Reconnect 5 (green) and 4 (yellow) cables to A6A9
Phase Lock if they were removed during removal of A6A3.
9. Replace and secure A6 RF Module PC board cover with six screws 0.
10. Reconnect cables (iJ to A6A9 Phase Lock and A6A12 YTX Driver. Cables are color-coded
and color codes are marked on PC board cover.
11. Replace bottom and right side covers on RF Section. Reconnect ac line cords.

4 A6A3

I

Figure 2. A6A3 Last Converter Replacement

A6A3 5

FRONT VIEW

(3 PLACES)

(34 PLACES)

A6A3A 1

INTERNAL VIEW OF REAR

3 2 1 . 4 - 2 1 . 4 M H z 321.4MHz
CONVERTER
AMPLIFIER

Q
5

Ll

L2

L3

L4

L5

A6A3A 1

3 2 1 .4MIiZ
BPF

Figure 3. A6A3 Last Converter Assembly, Parts Identification (1 of 2)

6 A6A3

REAR VIEW

@
@

0

@

@

@

63

@

0
@

@

63

@

@
63

L2

Item

HP Part
Number

L3

CD

L4

@

63

@

@

A6A3A 1

L5

Description

Mfr
Code

Mfr Part
Number

1

85660-20065

COVER, BOTTOM, LAST CONVERTER

28480 85660- 2006:

2

2200-0144

SCREW, MACH, 4-40, .375-IN LG, FLAT HD

28480 2200-0144

3

2950-0078

NUT, HEX, lo-32 (FOR Jl, J2, AND J3)

28480 29504078

4

2190-0124

WASHER, LOCK, lo-32 (FOR 61, J2, AND J3)

28480 2190-0124

5

8566G20066

HOUSING, LAST CONVERTER

28480 85660-20066

6

8566@00009

COVER, TOP, LAST CONVERTER

28480 85660-00009

7

2200-0138

SCREW, MACH, 4-40, .188-IN LG, FLAT HD

28480 2200-0138

\

Figure 3. A6A3 Last Converter Assembly, Parts Identification (2 of 2)

A6A3

7

HP Part Number 85660-60003
A6A3 Last Converter

w
-

HP Part
Number

C

A6A3

35660-60003

1

1

LAST CONVERTER ASSEMBLY

28480

85660-60003

A6A3Al
A6A3Ll
A6A3L2
A6A3L3
A6A3L4

35660-60002
3135-0002
3135-0002
)135-0002
)135-0002

0
8
8
8
8

1
1
1
1
1

LAST CONVERTER BOARD ASSEMBLY
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS

28480
33095
33095
33095
33095

85660-60002
51-744-018
51-744-018
51-744-018
51-744-018

A6A3L5
A6A3MP3
A6A3MP4
A6A3MP5
A6A3MP6

)135-0002
!200-0140
!200-0148
!950-0078
!190-0557

8
7
5
9
7

1
3
3
3
3

FILTER-LOW PASS SOLDER-TERMS
SCREW-MACH 4-40 .25-IN-LG 100 DEG
SCREW-MACH 4-40 .5-IN-LG 100 DEG
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
STAR WASHER .195 10

33095
77250
77250
74163
28480

51-744-018

A6A3MP7
A6A3MP8
A6A3MP9

35660-00009
35660-20066
35660-20065

1
2
1

1
1
1

COVER TOP
HOUSING
COVER BOTTOM

28480
28480
28480

85660-00009
85660-20066
85660-20065

Reference
Designation

D

Description

Mfr
Code

Mfr Part
Number

500220
2190-0557

-

*Indicates factory-selected value

8566040003 Parts List
Page 1 of 1

HP Part Number 85660-60002
A6A3Al Last Converter
Reference
Designation

HP Part C
Number D Qty

Mfr
Code

Description

Mfr Part
Number

A6A3Al

85660-60002

0

1

BOARD ASSEMBLY LAST CONVERTER

28480

85660-60002

A6A3AlCl
A6A3AlC2
A6A3AlC3
A6A3AlC4
A6A3AlC5

0160-3877
0160-3878
0160-3877
0160-3878
0160-3878

5
6
5
6
6

1
1
1
1
1

CAPACITOR-FXD
CAP-FXD 1OOOpF
CAPACITOR-FXD
CAP-FXD 1OOOpF
CAP-FXD 1OOOpF

04222
04222
04222
04222
04222

SR202ClOlMAAH
SR201C102MAAH
SR202ClOlMAAH
SR201C102MAAH
SR201C102MAAH

A6A3AlC6
A6A3AlC7
A6A3AlC8
A6A3AlC9
A6A3AlClO

0160-3878
0160-2246
0121-0452
0121-0452
0121-0452

6
0
4
4
4

1
1
1
1
1

CAP-FXD IOOOpF 100 V
CAP-FXD 3.6pF 500 V
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M

04222
52763
74970
74970
74970

SR201C102MAAH

A6A3AlCll
A6A3AlC12
A6A3AlC13
A6A3AlC14
A6A3AlC15

0121-0452
0121-0452
0160-0572
0160-3879
0160-3879

4
4
1
7
7

1
1
1
1
1

CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-N
CAPACITOR-FXD 2200PF +-20% IOOVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +-20X IOOVDC CER

74970
74970
04222
04222
04222

187-0103-028
187-0103-028
SR201C222MAAH
SR201C103MAAH
SR201C103MAAH

A6A3AlC16
A6A3AlC17
A6A3AlC18
A6A3AlC19
A6A3AlC20

0160-3879
0160-3878
0160-3879
0160-3879
0160-3879

7
6
7
7
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +-20%
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .OlUF +-20X
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20X

04222
04222
04222
04222
04222

SR201C103MAAH
SR201C102MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH

A6A3AlC21
A6A3AlC22
A6A3AlC23
A6A3AlC24
A6A3AlC25

0160-3879
0160-3653
0121-0046
0160-3879
0160-3879

7
5
2
7
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD 33PF +-5% LOOVDC CER 0+-30
CAPACITOR-V TRMR-CER 9-35PF 200V PC-MTG
CAPACITOR-FXD .OlUF +-20% IOOVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER

04222
52763
04222
04222

SR201C103MAAH
RPEllOCOG330J200V
304-322-573
SR201C103MAAH
SR201C103MAAH

A6A3AlC26
A6A3AlC27
A6A3AlC28
A6A3AlC29
A6A3AlC30

0160-3879
0160-3879
0160-3879
0160-3879
0160-3878

7
7
7
7
6

1
1
1
1
1

CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20X
CAP-FXD IOOOpF 100 V

04222
04222
04222
04222
04222

SR201C103MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH
SR201C102MAAH

A6A3AlC31
A6A3AlC32
A6A3AlC33
A6A3AlC34
A6A3AlC35

0160-3878
0160-3879
0160-3879
0160-3879
0160-3879

6
7
7
7
7

1
1
1
1
1

A6A3AlC36
A6A3AlC37
A6A3AlC38
A6A3AlC39
A6A3AlC40

0160-3879
0160-3879
0160-3879
0160-3879
0160-3879

7
7
7
7
7

A6A3AlC41
A6A3AlC42
A6A3AlC43
A6A3AlC44
A6A3AlC45

0160-3879
0160-3879
0160-3878
0160-3456
0160-3879

A6A3AlC46

0160-4892

1OOPF +-20% ZOOVDC CER
100 V
1OOPF +-20% ZOOVDC CER
100 V
100 V

1OOVDC CER
1OOVDC CER
1OOVDC CER
IOOVDC CER

187-0103-028
187-0103-028
187-0103-028

1OOVDC
1OOVDC
IOOVDC
1OOVDC

CER
CER
CER
CER

CAP-FXD IOOOpF 100 V
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20%
CAPACITOR-FXD .OlUF +-20x

1OOVDC
IOOVDC
1OOVDC
1OOVDC

CER
CER
CER
CER

04222
04222
04222
04222
04222

SR201C102MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

1DOVDC
IOOVDC
1OOVDC
1OOVDC
1OOVDC

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SR201ClD3MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH

7
7
6
6
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +-20% IOOVDC
CAPACITOR-FXD .OlUF +-20X 1OOVDC
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 1OOOPF +-lo% 1KVDC
CAPACITOR-FXD .OlUF +-20x 1OOVDC

CER
CER

04222
04222
04222
04222

SR201C103MAAH
SR201C103MAAH
SR201C102MAAH
808-542 X5E 102K
SR201C103MAAH

6

1

CAP-FXD 1uF 25 V

56289

2C37Z5U105M025C

.DlUF
.OlUF
.OlUF
.OlUF
.OlUF

+-20%
+-20%
+-20%
+-20%
+-20%

CER
CER

*Indicates facto y-selected value

8566060002 Parts List
Page 1 of 4

HP Part Number 85660-60002
A6A3Al Last Converter
Reference
Designation

HP Part
Number

c
0

at]
-

Mfr Part
Number

Mfr
Code

Description

A6A3AlC47
A6A3AlC48
A6A3AlC49
A6A3AlC50

0160-3879
0160-3879
0160-3879
0160-4892

7
I
I
E

1
1
1
1

CAPACITOR-FXD .OlUF +-20x 1OOVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAP-FXD 1uF 25 V

04222
04222
04222
56289

SR201C103MAAH
SR201C103MAAH
SR201C103MAAH
2C37Z5U105M025C

A6A3AlC51
A6A3AlC52
A6A3AlC53
A6A3AlC54
AGA%AlCRl

0160-4084
0160-3879
0160-3879
0160-3879
1901-1070

E
I
7
I
c

1
1
1
1
1

CAP-FXD O.luF 50 V
CAPACITOR-FXD .OlUF +-20% IOOVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +-20% IOOVDC CER
DIODE-PIN 1lOV

56289
04222
04222
04222
28480

lC20X7R104M050B
SR201C103MAAH
SR201C103MAAH
SR201C103MAAH

A6A3AlCR2
A6A3AlCR3
A6A3AlCR4
A6A3AlCR5
A6A3AlCR6

1901-1070
1901-1070
1901-1070
1901-1070
1901-1070

E

1
1
1
1
1

DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN

1lOV
1lOV
1lOV
1lOV
1lOV

28480
28480
28480
28480
28480

A6A3AlCR7
A6A3AlCR8
A6A3AlCR9
A6A3AlCRlO
AGA3AlCRll

1901-1070
1901-1070
1901-1070
1901-1070
1901-1070

1
1
1
1
1

DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN

1lOV
1lOV
1lOV
1lOV
1lOV

28480
28480
28480
28480
28480

A6A3AlCR12
A6A3AlCR13
A6A3AlCR14
A6A3AlCR15
A6A3AlCR16

1901-1070
1901-1070
1901-1070
1901-1070
1901-1070

1
1
1
1
1

DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN

1lOV
1lOV
1lOV
1lOV
1lOV

28480
28480
28480
28480
28480

A6A3AlCR17
A6A3AlCR18
A6A3AlCR19
A6A3AlCR20
A6A3AlEl

1901-1070
1901-1070
1901-1070
1901-1070
8151-0013

C

1
1
1
1
1

DIODE-PIN
DIODE-PIN
DIODE-PIN
DIODE-PIN
WIRE ~~AWG

1lOV
1lOV
IlOV
IlOV
1x22 (ATTACHED To A6A3Ll)

28480
28480
28480
28480
92194

298

A6A3AlE2
A6A3AlE3
A6A3AlE4
A6A3AlE5
A6A3AlE6

8151-0013
8151-0013
8151-0013
8151-0013
8151-0013

1

WIRE

1

1
1
1
1
1

1x22
1X22
1X22
1x22
1X22

(ATTACHED
(ATTACHED
(ATTACHED
(ATTACHED
(ATTACHED

To
TO
TO
To
TO

A6A3Ll)
A6A3L2)
A6A3L2)
A6A3L3)
A6A3L3)

92194
92194
92194
92194
92194

298
298
298
298
298

A6A3AlE7
A6A3AlE8
A6A3AlE9
A6A3AlElO
A6A3AlEll

3151-0013
3151-0013
~151-0013
3151-0013
3170-0029

4
4
4
4
3

1
1
1
1
1

JIRE ~~AWG 1x22 (ATTACHED
JIRE 22AWG 1X22 (ATTACHED
JIRE ~~AWG 1x22 (ATTACHED
JIRE ~~AWG 1x22 (ATTACHED
:ORE-SHIELDING BEAD

To
TO
To
To

A6A3L4)
A6A3L4)
A6A3L5)
A6A3L5)

92194
92194
92194
92194
02114

298
298
298
298
56-590-65A2/4A

A6A3AlE12
A6A3AlE13
A6A3AlE14
A6A3AlE15
A6A3AlE16

I170-0029
1170-0029
1170-0029
I170-DO29
I170-0029

3
3
3
3
3

1
1
1
1
1

:ORE-SHIELDING
:ORE-SHIELDING
:ORE-SHIELDING
:ORE-SHIELDING
:ORE-SHIELDING

02114
02114
02114
02114
02114

56-59D-65A2/4A
56-590-65A2/4A
56-590-65A2/4A
56-590-65A2/4A
56-590-65A2/4A

A6A3AlJl
A6A3AlJ2
A6A3AlJ3
A6A3AlLl

1250-1611
1250-1611
1250-1611
IlOO-2255

3
3
3
4

1
1
1
1

:ONNECTOR-RF SMB M PC 50-OHM
:ONNECTOR-RF SMB M PC 50-OHM
:ONNECTOR-RF SMB M PC 50-OHM
LNDUCTOR RF-CH-MLD 470NH +-10x .105D-INX

98291
98291
98291
24226

51-051-0289
51-051-0289
51-051-0289
lOM470K

C
c
c
C

c
c
E
c
5
C
C
5
c
C

C
C
C
1

1
1
1

WIRE
WIRE
WIRE
WIRE

~~AWG
22AWG
22AWG
~~AWG
22AWG

BEAD
BEAD
BEAD
BEAD
BEAD

-

8566040002 Parts List
Page 2 of 4

*Indicates factory-selected value

HP Part Number 85660-60002
A6A3Al Last Converter
Reference
Designation

HP Part
Number

a
-

Description

Mfr
Code

Mfr Part
Number

A6A3AlL2

9100-2891

4

1

INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.

24226

lOMOSOK-1

A6A3AlL3
A6A3AlL4
A6A3AlL5
A6A3AlL6
A6A3AlL7

9100-2255
85660-80002
85660-80001
85660-80001
85660-80001

4
2
1
1
1

1
1
1
1
1

INDUCTOR RF-CH-MLD 470NH +-lo% .105D-INX
COIL TAPPED
COIL TAPPED
COIL TAPPED
COIL TAPPED

24226
28480
28480
28480
28480

lOM470K
85660-80002
85660-80001
85660-80001
85660-80001

A6A3AlL8
A6A3AlL9
A6A3AlLlO
A6A3AlL12
A6A3AlL13

85660-80002
9100-2247
9140-0144
9100-1623
9100-1623

2
4
0
8
8

1
1
1
1
1

COIL TAPPED
INDUCTOR RF-CH-MLD 1OONH +-10x .105D-INX
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 27UH +-5% .166D-INX.3
INDUCTOR RF-CH-MLD 27UH +-5% .166D-INX.3

28480
24226
99800
99800
99800

85660-80002
1OMlOOK
1025-36
1537-48
1537-48

A6A3AlL18
A6A3AlL19
A6A3AlL21
A6A3AlL22
A6A3AlL23

9100-1623
9100-1623
9100-1623
9100-1623
9100-1623

8
8
8
8
8

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

.166D-INX.3
.166D-INX.3
.166D-INX.3
.166D-INX.3
.166D-INX.3

99800
99800
99800
99800
99800

1537-48
1537-48
1537-48
1537-48
1537-48

A6A3AlL24
AGA3AlMPl
A6A3AlMP2
A6A3AlMP3
A6A3AlQl

9100-1623

8

1

99800

1537-48

0380-1672
1205-0226
1854-0477

0
9
7

1
1
1

INDUCTOR RF-CH-MLD 27UH +-5x .166D-INX.3
NOT ASSIGNED
STANDOFF-RVT-ON .608-IN-LG 4-40-THD
HEAT SINK SGL TO-5/TO-39-CS
TRANSISTOR NPN 2N2222A SI TO-18 PD=50DMW

06540
13103
04713

11158
2N2222A

A6A3AlQ2
A6A3AlQ3
A6A3AlQ4
A6A3AlQ5
A6A3AlQ6

1854-0345
1854-0345
1854-0345
1853-0281
1854-0378

8
8
6
9
7

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN
NPN
NPN
PNP
NPN

2N5179 SI TO-72 PD=200MW
2N5179 SI TO-72 PD=200MW
2N5179 SI TO-72 PD=EOOMW
2N2907A SI TO-18 PD=400MW
2N5109 SI TO-39 PD=800MW

04713
04713
04713
04713
04713

2N5179
2N5179
2N5179
2N2907A
2N5109

A6A3AlQ7
A6A3AlQ8
A6A3AlQ9
A6A3AlQlO
A6A3AlQll

1853-0281
1854-0686
1854-0345
1854-0345
1854-0345

9
0
8
8
8

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

PNP
NPN
NPN
NPN
NPN

2N2907A SI TO-18 PD=400MW
SI TO-72 PD=200MW FT=4GHZ
2N5179 SI TO-72 PD=LOOMW
2N5179 SI TO-72 PD=ZOOMW
2N5179 SI TO-72 PD=ZOOMW

04713
25403
04713
04713
04713

2N2907A

A6A3AlQ12
A6A3AlRl
A6A3AlR2
A6A3AlR3
A6A3AlR4

1854-0378
0757-0438
0757-0438
0757-0418
0698-3154

7
3
3
3
3

1
1
1
1
1

TRANSISTOR NPN 2N5109 SI TO-39 PD=800MW
RESISTOR 5.11K +-I% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 619 +-1% .125W TF TC=O+-100
RESISTOR 4.221: 1% .125W TF TC=O+-100

04713
19701
19701
19701
19701

2N5109
SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR5
A6A3AlR6
A6A3AlR7
A6A3AlR8
A6A3AlR9

0698-8818
0698-0085
0757-0440
0698-3431
0757-0198

3
3
7
3
!

1
1
1
1
1

RESISTOR
RESISTOR
?ESISTOR
?ESISTOR
7ESISTOR

3.16 +-1% .125W TF TC=O+-100
2.61K 1% .125W TF TC=O+-100
7.5K +-I% .125W TF TC=O+-100
23.7 1% .125W TF TC=O+-100
100 +-1% .5W TF TC=O+-100

91637
19701
19701
19701
19701

CMF-55-1
SFR25H
SFR25H
SFR25H
5053R

A6A3AlRlO
A6A3AlRll
A6A3AlR12
A6A3AlR13
A6A3AlR14

3757-0419
3757-0428
3757-0278
3757-0280
3757-0438

3
1
3
3
3

1
1
1
1
1

?ESISTOR
?ESISTOR
?ESISTOR
7ESISTOR
7ESISTOR

681 +-1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100
1.78K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR15

3757-0438

3

1

?ESISTOR 5.11K +-1% .125W TF TC=O+-100

19701

SFR25H

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

27UH
27UH
27UH
27UH
27UH

+-5%
+-5%
+-5%
+-5%
+-5%

215179
215179
215179

-

*Indicates factory-selected value

8566060002 Parts List
Page 3 of 4

HP Part Number 85660-60002
A6A3Al Last Converter
Reference
Designation

HP Part
Number

Description

XY
-

Mfr
Code

Mfr Part
Number

A6A3AlR16
A6A3AlR17
A6A3AlR18
A6A3AlR19

1757-0200
1757-0447
1757-0418
1698-3441

7
4
9
8

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.621: +-1% .125W TF TC=O+-100
16.2K +-1% .125W TF TC=O+-100
619 +-1% .125W TF TC=O+-100
215 1% .125W TF TC=O+-100

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR20
A6A3AlR21
A6A3AlR22
A6A3AlR23
A6A3AlR24

1698-3132
1698-3155
1698-3446
1698-3162
1757-0416

4
1
3
0
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

261 1% .125W TF TC=O+-100
4.641: 1% .125W TF TC=O+-100
383 1% .125W TF TC=O+-100
46.41: 1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR25
A6A3AlR26
A6A3AlR27
A6A3AlR28
A6A3AlR29

1757-0416
1757-0438
1698-3449
1757-0278
1757-0280

7
3
6
9
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100
28.71: 1% .125W TF TC=O+-100
1.78K +-I% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR30
A6A3AlR31
A6A3AlR32
A6A3AlR33
A6A3AlR34

1698-3132
1698-3155
1757-0418
1698-3162
1757-0417

4
1
9
0
8

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

261 1% .125W TF TC=O+-100
4.641: 1% .125W TF TC=O+-100
619 +-1% .125W TF TC=O+-100
46.41: 1% .125W TF TC=O+-100
562 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A3AlR35
A6A3AlR36
A6A3AlR37
A6A3AlR38
A6A3AlR39

1698-0083
1698-3439
1757-0394
1757-0814
1757-0442

8
4
0
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K 1% .125W TF TC=O+-100
178 1% .125W TF TC=O+-100
51.1 +-1X .125W TF TC=O+-100
511 +-1% .5W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
5053R
SFR25H

A6A3AlR40
A6A3AlR41
A6A3AlR42
A6A3AlR43
A6A3AlR44

1757-0442
1757-0798
1757-0438
1757-0280
1757-0442

9
8
3
3
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1X .125W TF TC=O+-100
110 +-1% .5W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
5053R
SFR25H
SFR25H
SFR25H

A6A3AlR45
A6A3AlR46
A6A3AlUl
AGA3AlVRl

1698-4037
)757-0394
1955-0084
.902-0625

0
0
5
0

1
1
1
1

RESISTOR 46.4 1% .125W TF TC=O+-100
RESISTOR 51.1 +-1% .125W TF TC=O+-100
U-WAVE MIXER 500 MHZ MAX
DIODE-ZNR lN829 6.2V 5% DO-35 PD=.25W TC

19701
19701
15542
04713

SFR25H
SFR25H
SRA-lH-32
lN829

-

8566060002 Parts List
Page 4 of 4

*Indicates facto y-selected value

C23
10.7 MHz NOTCH
FILTER ADJUSTMENT

1
16

I

J3
21.4 MHz OUT

3 0 0

iii, I N

3 2 1

Jl
.4 MHz I N

Pl
\
\
\
c.1 1
c.10
c9
C8
3 2 1 . 4 M H z BANDPASS F I L T E R A D J U S T M E N T S
Cl2

A6A3Al Last Converter Board Component Locations, 85660-60002

A6A7 YIG-Tuned Mixer (YTX) Current Driver, Circuit Description
The YTX Current Driver has three functions:
1. Provides the output stage for the A6A8 YTX coil.
2. Provides filter circuitry for the YTX.
3. Provides control circuitry for the YTX heater.

YTX Drive Output @
The YTX drive output consists of Q5, QS, R14 to R17, VR4, and CR3. Q5 and Q6 form a
darlington transistor driven by the A6A12 YTX Driver. R14 to R17 are four 1000 ten-watt
resistors connected in parallel to form a 25R resistor which is used to sense the current in
the YTX coil. This sense signal is fed back to the YTX Driver. Four resistors are used for
power handling capability and temperature stability. VR4 and CR3 limit the flyback voltage
produced across the YTX coil during scan reset and prevent breakdown of Q5 and Q6.

Filter Capacitor Drive @
When the spectrum analyzer is set to narrow spans and narrow resolution bandwidth, hum
and noise in the YTX drive circuitry which FMs the YTX can introduce phase noise and
line frequency sidebands onto a displayed signal. To prevent this occurrence, a large filter
capacitor, A6A7C1, is connected across the YTX coil by switch QS whenever the resolution
bandwidth is 100 Hz or less.
QS is controlled from A6All Slope Generator through Q2, Q3, and Q4. When the resolution
bandwidth is 100 Hz or less, the filter capacitor is connected before the start of a scan and
disconnected at the end of a scan so that the scan reset and hysteresis correction can be
performed.

YTX Heater Control @
The YTX heater control is a feedback circuit designed to maintain the center support of the
YTX at a constant 75”C, as the ambient temperature ranges from 0“ to 55°C. The green
LED, DSl, indicates that current is flowing properly in the heater. Red LED, DS2, indicates
the circuit is saturated, putting maximum power into the heater.
The heater ring of the YTX has a 4500 thin-film heater resistor, and a thermal sensor with
a positive temperature coefficient. The resistance versus temperature characteristics of the
thermal sensor are shown in Figure 1.

A6A7/A6Aii/A6A8

1

100K -

-

IOK -

-

RR
IK------ - - - -

- - -

I

I

I

50”

60°

70”

L

I

,
I

I

I

I

80°

90’

loo0

1 loo

T E M P “C

Figure 1. YTX Thermal Sensor Resistance versus Temperature Characteristics
Op-amp Ul, with R2, R3, R4, Ql, and Q7 farms an amplifier with a gain of about 127. In
addition, R2 and R3 set a reference voltage at the negative input of the amplifier. Darlington
Ql and Q7 is able to provide the large currents required to heat the heater resistor to 75°C.
VR2 and R5 offset the op-amp output voltage to be within range of the output stage (0 to
-40 V). CR1 protects the op-amp input.
The circuit operates as follows: If the heater ring is cool (such as at turn-on), the divider
formed by Rl and the sensor (described above) outputs a voltage that is less than the
reference at the minus input to the amplifier. This causes the amplifier output to swing
negative, thus drawing more current through the heater resistor, heating up the sensor,
causing it to increase its resistance. This raises the voltage at the Rl/sensor divider output
until it exactly equals that of the reference divider R2/R3. In general, small temperature
errors are manifested as a small voltage between pins 2 and 3 of the op-amp (its input). This
error is amplified and applied to the heater resistor with the appropriate sign to eliminate the
error.

2 A6A7/A6A5/A6A8

A6A8 YIG-Tuned Mixer (YTX),
A6A5 Amplifier/Coupler/Load Unit (ACLU), Circuit Description
The YTX consists of a three-pole tunable bandpass filter and a single-diode microwave
harmonic mixer. The 2 to 6 GHz local oscillator (LO) signal enters the ACLU, and is
amplified and coupled into the YTX to turn its diode on and off at the LO rate. The diode
conduction angle is adjusted with DC diode bias to be optimum for the harmonic of the LO
being used. The incoming microwave signal passes through the bandpass filter, through the
mixer diode, as the diode switches on and off, and into the precision 500 load of the ACLU.
The IF signal at 321.4 MHz travels down the same line as the higher frequency LO, but a
matching network couples the 321.4 MHz IF signal to the ACLU output while blocking the
LO.
The three-pole filter has two purposes:
1. To reject the image response of the mixer 642.8 MHz away from the desired signal.
2. To reject the LO signal that would otherwise come out of the mixer’s microwave input
port, and out of the instrument front panel.

Handling the YIG-Tuned Mixer
Caution

The YIG-Tuned Mixer (YTX) contains an extremely small and sensitive
diode. A reverse voltage in excess of 3 V may damage it. It is connected
directly to the center conductor of the LO/IF connector, and is especially
susceptible to blowout from electrostatic discharge. Before connecting any
coaxial cable to the YTX, connect the YTX BIAS pin to ground, discharge
the coaxial cable by connecting the center conductor to ground (YTX body),
then simultaneously touch both to chassis ground or the YTX package. It is
recommended that the other end of the cable be connected first before going
through this procedure.
Once the cable from the YTX to the ACLU is properly installed, the BIAS pin
of the ACLU is directly connected to the YTX diode. Therefore, treat the
BIAS pin with extreme caution, especially avoiding electrostatic discharge.
As a general rule, connect all devices to the chassis before connecting to or
touching the BIAS pin on the ACLU.

A6A7JA6A5/A6A8

3

A6A5 Amplifier/Coupler/Load Unit (ACLU) Replacement
For location of hardware and cables referred to in this procedure, see Figure 2.

Note

3
Removal
1. Remove ac line cords and RF Section bottom cover.
2. Disconnect connectors 0, @ and @J>, single-pin connector 0, and double-pin connector @
from Second Converter.
3. Disconnect the remaining cables from Second Converter:
1 (brown) cable from .321 OUT 0J
4 (yellow) cable from TUNE @
4. Remove ACLU cover-plate by removing four screws @ as shown in View A.
5. Disconnect five connectors a@>, three 92 (white/red) single-pin connectors a@, and one
8 (gray) single-pin connector (iJo.
6. Release ACLU by removing two screws @@ shown in View B.

Installation
7. Secure new ACLU on mounting bracket with two screws @@, and reconnect the cables
and wires removed in step 5.
8. Replace ACLU cover-plate with four screws @ shown in View A.
9. Reconnect the following cables to Second Converter: (Refer to View A.)
1 (brown) cable to .321 OUT 0
1 (brown) cable to .321 IN @
4 (yellow) cable to TUNE @
10. Replace bottom cover and ac line cords.

4 A6A7/A6AS/A6A6

A6A5 Amplifier/Coupler/Load Unit (ACLU) Replacement

(2 p LACES)

(4 PLACES)

2
b
VIEW A

/

0

/
\

- 0

@ (2 PLACES)

VIEW B

Figure 2. A6A5 ACLU Replacement

A6A7/A6 A5/A6 A0

5

A6A7 YTX Current Driver Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 3.

!il

Removal
1. Remove ac line cords and RF Section bottom cover.
2. Disconnect 5-pin connector @ and ribbon cable @ from A6A7.
3. Remove two screws @ and remove A6A7 from RF Module.

Installation
4. Place A6A7 in RF Module and replace two screws 0.
5. Reconnect 5-pin connector @ and ribbon cable @ to A6A7.
6. Replace bottom cover on RF Section and reconnect ac line cords.

(2 PLACES)

Figure 3. A6A7 YTX Current Driver Replacement

6

A6 A7/A6 AS/A6 A8

A6A8 YTX Replacement

A6A8 YTX Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 4.

I
w

Removal
1. Remove ac line cords, separate instrument sections, and remove top and bottom covers
from RF Section.
2. Disconnect cable @ between All YTO Loop and RF Module.
3. Remove five cables from RF Module PC boards; three from A6A9 Phase Lock and two
from A6A12 YTX Driver.
4. Remove RF Module PC board cover by removing six screws 0.
5. Remove A6A9 assembly and A6A10, A6Al1, and A6A12 PC boards.
6. Disconnect 4 (yellow) cable and 5 (green) cable from 2nd Converter to release A6A9
assembly.
7. Remove ribbon cable @ between A6A7 YTX Current Driver and motherboard.
8. Disconnect 5-pin connector @ from A6A7 and remove A6A7 by removing two screws 0.

Caution

The A6A8 YTX contains an extremely sensitive diode located inside the
LO/IF connector. This diode is highly susceptible to blow-out from static
discharge. Be very careful when handling the YTX to avoid damaging this
diode.

9. Disconnect all cables from A6A8 YTX.
10. Disconnect bus cable @ from motherboard.
11. Remove two screws Q) holding YTX to motherboard.
12. Remove YTX from RF Module.

Installation
13. Place YTX in RF Module. Be sure insulator is properly installed between YTX and
motherboard.
14. Replace two screws @) to attach YTX to motherboard.
15. Reconnect bus cable @ to motherboard.

Caution

The A6A8 YTX contains an extremely sensitive diode located inside the
LO/IF connector. This diode is highly susceptible to blow-out from static
discharge. Be very careful when connecting cables to the YTX to avoid
damaging this diode. Ground (discharge) all cables before connecting them
the YTX.

A6A7/A6A5/A6A8

7

A6A8 YTX Replacement
16. Reconnect coaxial cables to YTX.
17. Place A6A7 YTX Current Driver in RF Module and secure with two screws 0.
18. Reconnect 5-pin connector @ to A6A7.
19. Replace ribbon cable @ between A6A7 and motherboard.
20. Replace A6A9 assembly and A6A10, A6Al1, and A6A12 PC boards.
21. Reconnect 4 (yellow) cable and 5 (green) cable to 2nd Converter.
22. Replace RF Module PC board cover and secure with six screws 0.
23. Reconnect five cables to RF Module PC boards; three to A6A9 Phase Lock and two to
A6A12 YTX Driver. Cables are color-coded and color codes are labeled on PC board
cover.
24. Reconnect cable @) between All YTO Loop and RF Module.
25. Replace top and bottom covers on RF Section, recombine instrument sections, and
reconnect ac line cords.

8 A6A7/A6AS/A6A8

A6A8 YTX Replacement

0

I 1

0

0

0

Q

0

0

*

I
I

Figure 4. A6A8 YTX Replacement

A6A7/A6A5/A6A8

9

A6A8 YTX Replacement

(2 PLACES)

0’
8

2 PLACES)

\
O@

00
0

@

@

I

I

@
0

@

@
0

0

00

Figure 5. A6A7 YTX Current Driver, Parts Identification (1 of 2)

1 0 A6A7/A6AS/A6A8

A6A8 YTX Replacement
Item HP Part CD
Number

Description

Mfr
Mfr Part
Code Number

1

2200-0107

6

SCREW, MACH, 4-40, .375-IN LG, PAN HD

28480 2200-0107

2

0520-0128

7

SCREW, MACH, 2-56, .25-IN LG, PAN HD

28480 0520-0128

3

2190-0014

1

WASHER, LOCK, 2-56, (FOR SCREW (2))

28480 2190-0014

4

1200-0043

8

INSULATOR, TRANSISTOR (FOR Q6)

28480 1200-0043

5

2200-0109

8

SCREW, MACH, 4-40, .438-IN LG, PAN HD

28480 2200-0109

6

85660-00023

9

HEAT SINK, YTX CURRENT DRIVER

28480 85660-00023

7

0610-0001

6

NUT, HEX, 2-56 (FOR SCREW (2))

28480 0610-0001

8

0340-0162

7

INSULATOR, TRANSISTOR (FOR Q7)

28480 0340-0162

9

0340-1064

0

INSULATOR, BUSHING (FOR QS & Q7)

28480 0340-1064

Figure 5. A6A7 YTX Current Driver, Parts Identification (2 of 2)

A6A7/A6AS/A6A8

11

HP Part Number 85660-60128
A6A7 YTX Current Driver
Reference
Designatior

HP Part
Number

v
.
.
.

A6A7

85660-60128

A6A7Cl
A6A7CRl
A6A7CR2
A6A7CR3
A6A7DSl

0180-0094
1901-1067
1901-1067
1901-1067
1990-0485

1
1
1
1
c

A6A7DS2
A6A7Jl
A6A7J2
A6A7MPl
A6A7MP2

1990-0486
1251-5146
1251-5144

E
c

0340-0949

A6A7MP3
A6A7MP4
A6A7MP5
A6A7MP6
A6A7MP7

3t
-

Description

Mfr
Code

Mfr Part
Number

1

BOARD ASSEMBLY, YTX CURRENT DRIVER

284BL

85660-60128

1
1
1
1
1

CAP-FXD IOOuF 25 V AL-ELCTLT
DIODE-SWITCHING 125V 175MA 60NS 00-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
LED-LAMP LUM-INT=2MCD IF=30MA-MAX BVR=SV

5628s
27011
27014
27014
28481

300107G025DD2-DSM
FDH444
FDH444
FDH444
HLMP-1503

2848C
00779
00779

HLMP-1301
87502-2
87502-6

E

1

LED-LAMP LUM-INT=2MCD IF=25MA-MAX BVR=5V
CONN-POST TYPE .lOO-PIN-SPCG 5-CDNT
CONN-POST TYPE .lOO-PIN-SPCG 13-CDNT
NOT ASSIGNED
INSULATOR-XSTR THRM-CNDCT

18565

60-11-5791-1674

0380-1602
0520-0128
0610-0001
0340-1114
D340-1064

E
7
5
1
3

4
8
8
1
4

STANDOFF-RVT-ON .l-IN-LG 4-40-THD
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM 2-56-THD .062-IN-THK
INSULATOR-XSTR THRM-CNDCT
INSULATOR-FLG-BSHG NYLON

05791
77250
73734
55285

BR 6905 B-0.100-43

A6A7MP8
A6A7MP9
A6A7MPlO
A6A7MP12
A6A7MP13

1200-0081
35660-00023
3151-0013
!190-0014
!200-0109

1
3
1
I
3

INSULATOR-NYLON BUSHING .115 ID
HEAT SINK CR OR
WIRE 22 1X22
WASHER-LK INTL T NO. 2 .089-IN-ID
SCREW-MACH 4-40 .438-IN-LG PAN-HD-PDZI

28480
28480
28480
78189
77250

1200-0081
85660-00023
8151-0013
1902-00-00-2580

A6A7MP14
A6A7Ql
A6A7Q2
A6A7Q3
A6A7Q4

3050-0239
L853-0281
1853-0281
1854-0477
1853-0038

r

1
1
1
1
1

WASHER-FL NM NO. 8 .17-IN-ID .375-IN-OD
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR PNP SI TO-39 PD=lW FT=lOOMHZ

73734
04713
04713
04713
04713

33-112
2N2907A
2N2907A
2N2222A

A6A7Q5
A6A7Q6
A6A7Q7
A6A7Q8
A6A7Rl

1853-0038
1853-0391
.853-0234
1884-0282
0698-3157

I
1
,

1
1
1
1
1

TRANSISTOR PNP SI TO-39 PD=lW FT=lOOMHZ
TRANSISTOR PNP 2N6051 SI DARL TO-3
TRANSISTOR PNP SI PD=65W FT=3MHZ
THYRISTOR-TRIAC 2N6073
RESISTOR 19.6K 1% .125W TF TC=O+-100

04713
04713
28480
04713
19701

2N6051
1853-0234
2N6073
SFR25H

A6A7R2
A6A7R3
A6A7R4
A6A7R5
A6A7R6

0757-0447
0757-0421
0757-0465
0698-3157
0698-3438

1
1
1
1
1

RESISTOR 16.2K +-1% .125W TF TC=O+-100
RESISTOR 825 +-1% .125W TF TC=O+-100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR 19.6K 1% .125W TF TC=O+-100
RESISTOR 147 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A7R7
A6A7RB
A6A7R9
A6A7RlO
A6A7Rll

3757-0416
3757-0458
3757-0442
3757-0458
3757-0442

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1X .125W TF TC=O+-100
51.1K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
51.1K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A7R12
A6A7R13
A6A7R14
A6A7R15
A6A7R16

1698-3635
1757-0438
1811-0653
1811-0653
1811-0653

1
1
1
1
1

RESISTOR 680 5% 2W MO TC=O+-200
RESISTOR 5.11K +-1X .125W TF TC=O+-100
RESISTOR 100 +-1X 12W PUN TC=O+-5
RESISTOR 100 +-1% 12W PUN TC=O+-5
RESISTOR 100 +-1% 12W PUN TC=O+-5

11502
19701
01686
01686
01686

GS-3
SFR25H
ALN-10
ALN-10
ALN-10

A6A7R17

1811-0653

1

RESISTOR 100 +-1% 12W PUN TC=O+-5

01686

ALN-10

7

1
1
I
I

3

1

K-4-05

-

*Indicates factory-selected value

85660-60128 Parts List
Page 1 of 2

HP Part Number 85660-60128
A6A7 YTX Current Driver
Reference
Designatior

HP Part
Number

Qt

Description

A6A7R18
A6A7R19
A6A7R20
A6A7R21

0757-0401
0698-0082
0757-0416
0698-3395

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

100 +-1% .125W TF TC=O+-100
464 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
34.8 1% .5W TF TC=O+-100

A6A7Ul
A6A7VR2
A6A7VR4

1826-1058
1902-0967
1902-0644

1
1
1

IC OP AMP GP a-TO-99 PKG
DIODE-ZNR 24V 5% DO-35 PD=.4W TC=+.094%
DIODE-ZNR 1153638 30V 5% PD=5W TC=+29MV

-

85660-60128 Parts List
Page 2 of 2

*Indicates factoy-selected value

Mfr
Code

Mfr Part
Number

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
5053R

06665
04713
04713

OP-02CJ

PC BOARD SIDE
DS2
DSl
GREEN
ON=HEATER

\

ONIE9ER
CONTROL SATURATED

( S I G N A L iD H E A T E R
CONNECTIONS)

s
DSl

DS2

\;- ,/ig&#qg~

I

\

I

HEAT SINK SIDE

A6A7 YTX Current Driver Component Locations, 85660-60128

A6A9

A6A9 Phase Lock, Circuit Description
The A6A9 Phase Lock has three major functions:
1. To provide a stable -10.0 dBm, 100 MHz calibrator signal to the RF Section front panel.
2. To provide a 300 MHz local oscillator to the A6A3 Last Converter assembly.
3. To phase-lock the 3.3 GHz second local oscillator in the A6A4 Second Converter assembly
to the 33rd harmonic of the 100 MHz reference signal produced by the A7A2 100 MHz
VCXO assembly. This 3.3 GHz phase lock loop is called the Heterodyne Loop.

100 MHz Buffer Amplifier @
The 100 MHz buffer amplifier Ql amplifies the reference signal from the A7A2 100 MHz
VCXO assembly. Low pass matching network, Ll and C4, provides a 5Ofl input impedance.
Transformer Tl acts as a power divider, supplying the 100 MHz signal to both the Driver
circuit and the Phase Lock circuit.

Driver @
Transistor Q2 amplifies the 100 MHz from the 100 MHz Buffer Amplifier. Power divider T2
drives both the 100 MHz Calibrator and the 300 MHz LO circuit.

100 MHz Calibrator @
The Calibrator circuit consists of a differential amplifier, Q3A and Q3B, followed by a low
pass filter. Low pass filters C19, L8, C20, L9, and C22, reduce higher order harmonics on the
front panel calibrator output. Potentiometer Rll and factory-select resistor RlO set the gain
of Q3.

Tripler @
With the 100 MHz input from the Driver circuit, the Tripler circuit produces a 300 MHz
output at approximately +6 dBm. Inductor LlO and C24 are used for impedance matching.
The output tank circuit, formed by Lll and the output capacitance of transistor Q4, resonates
at 300 MHz. Capacitor C29 adjusts the loading of the stage and couples the output to the
Power Amplifier.

A6A9 1

300 MHz Power Amplifier @I
The output of the 300 MHz Power Amplifier, approximately +20 dbm, is the local oscillator
for the A6A3 Last Converter. Capacitor C30 reduces the sub-harmonic content of the output.
The output filter C52, L21, and C53, reduces higher order harmonics while maintaining a 500
output impedance.

Sampler Driver @I
Amplifier U2 drives the Sampler step-recovery diode (function block E) with the 100
MHz signal at a level of approximately +20 dBm. Capacitors C8, C9, and L4 match the
forward-biased impedance of the diode to U2. Resistor R5 loads the output of U2 during the
diode’s reverse biased condition.

Sampler @ and Loop Integrator @
The output of the sampler is a dc voltage proportional to the phase difference between the
33rd harmonic of the 100 MHz reference and the 3.3 GHz second local oscillator (A6A4
Second Converter). Integrator U3 supplies a tune voltage to the 3.3 GHz second local
oscillator. This heterodyne loop phase locks the oscillator to the 100 MHz reference signal.
Potentiometer R38 adjusts the output balance of the sampler. Capacitor C46 is the integrator
capacitor for U3.

Aided Acquisition and Unlock Detector @
The output tune voltage from the Loop Integrator (function block F) becomes - 25 V when
the 3.3 GHz Heterodyne Loop is unlocked. The Aided Acquisition circuitry detects this
condition and retunes the 3.3 GHZ oscillator on the A6A4 Second Converter assembly within
the capture range of the phase-lock loop. The Aided Acquisition circuitry also controls the
Lock Indicator (function block J).
The Negative Rail Detector U4A is an inverting comparator. The threshold voltage at pin 5 is
set at -23.5 V. During unlock, the input of U4A becomes more negative than the threshold
voltage and the comparator output becomes positive. Resistor R21 provides positive feedback,
stabilizing the circuit. Resistors R25 and R26 form a voltage divider reducing the input to
U4B below the value of the power supplies. The positive output of U4A triggers One Shot
multivibrator U4B. The negative output of U4B forward biases diodes CR1 and CR2. The
diodes become a constant current source for integrator capacitor C46 (function block F),
causing a positive direction search ramp of voltage at the output of U3. This search ramp
tunes the 3.3 GHz second local oscillator through the capture range of the phase-lock loop.
If the phase-lock loop does not phase-lock on the search ramp, the tune voltage will remain
positive until the One Shot recovers, reverse biasing CR1 and CR2. The output of U3 then
becomes negative (unlock condition), causing the Aided Acquisition circuitry to repeat the
search cycle until phase-lock occurs. This results in a sawtooth tune waveform with a period
of approximately 6 ms.
The One Shot pulse width of approximately 1 ms is controlled by R24 and C38. This is the
time it takes for the voltage on pin 7 to decay to -25 V to less the -20 V. During this time,
the input to U4C has become -20 V due to the positive tune voltage ramp. In high band the
3.3 GHz second local oscillator is switched off; the PIN signal goes negative, which disables
the search ramp and unlock detector through CR3.

2 A6A9

Switch and Unlock Detector: When unlock occurs, the output of U4B becomes low, causing
U4C to have a low output. The output of U4D becomes positive, turning off Q5. If no lock
occurs on the search ramp, the delay caused by resistor R27 and capacitor C37 keeps Q5 off
until the next search cycle begins. This delay is different for an HP 85660A RF Section, and is
set by the value of R27.

Jl

J2

DSI

@

60

L16

L17

L14

L1.5

@

(gl

LACES)
@
@

0

L14

L17

L16

L18

Figure 1. A6A9 Phase Lock Assembly, Internal and Front Views
A6A9

3

A6A9’A 1

Item

HP Part
Number

Description

Mfr
Code

Mfr Part
Number

1

2950-0177

NUT, HEX, RF CONNECTOR (FOR 55)

28480 2950-0177

2

2196-6067

WASHER, LOCK, RF CONNECTOR (FOR 55)

28480 2190-0067

3

2950-0078

NUT, HEX, lo-32 (FOR J4)

28480 2950-0078

4

2190-0557

WASHER, LOCK, .195-IN ID (FOR 54)

28480 2190-0557

5

8566CLOOO70

COVER, FRONT, PHASE LOCK ASSEMBLY

28480 85660~0007C

6

2200-0140

SCREW, MACH, 4-40, .250-IN LG, FL HD

28480

2200-0140

7

2200-0109

SCREW, MACH, 4-40, .438-IN LG, PAN HD

28480

2200-0109

8

86701-06054

SPACER-SAMPLER (BETWEEN TBl AND Ul)

28480

86701-00054

9

85660-20204

HOUSING, PHASE LOCK ASSEMBLY

28480

85660-20204

10

8566@20205

COVER, REAR, PHASE LOCK ASSEMBLY

28480

85660-20205

11

85660-80061

INSULATING SHIELD, PLASTIC

28480

85660-80061

12

2200-0148

SCREW, MACH. 4-40, .500-IN LG. FL HD

28480

2200-0148

Figure 2. A6A9 Phase Lock Assembly, Parts Identification, Rear View

4 A6A9

HP Part Number 85660-60226
A6A9 Phase Lock Assembly
Reference 1 HPPaIrt lC
l Designation Number D
I
A6A9

85660-60226

0

A6A9Al

85660-60202

2

A6A9Jl
A6A9J2
A6A9J3
A6A9L14

1250-0544
1250-0544
1250-0544
9135-0002

A6A9L15
A6A9L16
A6A9L17
A6A9L18
A6A9MP2

I

I

Qtl
1

Description

Mfr
Code

I

Mfr Part
Number

PHASE LOCK ASSEMBLY (SERIAL PREFIX:
2410A-2503A)

28480

85660-60226

28480

85660-60202

9
9
9
8

PHASE LOCK BOARD ASSEMBLY (PART OF
A6A9. MAY NOT BE ORDERED SEPARATELY.)
(PARTS LIST INCLUDED IN THIS SECTION.)
CONNECTOR-RF SM-SNP M SGL-HOLE-FR SO-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR SO-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 5D-OHM
FILTER-LOW PASS SOLDER-TERMS

98291
98291
98291
33095

051-049-0000-220
OSl-049-0000-220
OSl-D49-0000-220
51-744-018

9135-0002
9135-0002
9135-0002
9135-0002
85660-80061

8
8
8
8
3

FILTER-LOW
FILTER-LOW
FILTER-LOW
FILTER-LOW
INSULATOR,

PASS SOLDER-TERMS
PASS SOLDER-TERMS
PASS SOLDER-TERMS
PASS SOLDER-TERMS
MYLAR, CLEAR

33095
33095
33095
33095
28480

51-744-018
51-744-018
51-744-018
51-744-018
85660-80061

A6A9MP3
A6A9MP4
A6A9MP5
A6A9MP6
A6A9MP7

1250-1142
1250-1143
2190-0559
2200-0140
2200-0148

5
6
7
7
5

WASHER-LK INTL T l/2 IN .256-IN-ID (55)
NUT-RF CONNECTOR SERIES SMA HEX NUT (55)
WASHER-LK INTL T ND. 10 .195-IN-ID (54)
SCREW-MACH 4-40 .25-IN-LG 100 DEG
SCREW-MACH 4-40 .5-IN-LG 100 DEG

28480
28480
28480
28480
28480

1250-1142
1250-1143
2190-0559
2200-0140
2200-0148

A6A9MP8
A6A9MP9
A6A9MPlO
A6A9MPll
A6A9MP12

85660-20205
85660-20204
2950-0078
85660-00070
86701-00054

1
0
9
6
8

COVER, BOTTOM
HOUSING, PHASE LOCK 80X
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
COVER, PHASE LOCK
SPACER, SAMPLER

28480
28480
28480
28480
28480

85660-20205
85660-20204
2950-0078
8566D-DO070
86701-DO054

A6A9MP13
A6A9MP14
A6A9MP15
A6A9Ul
A6A9Ul

1251-3172
2200-0107
85660-60008
5086-7097
5086-7292

7
8
6
6
3

CONNECTOR-SGL CONT SKT .03-IN-BSC-SZ RND
SCREW-MACH 4-40 .438-IN-LG PAN-HD-POZI
BOARD ASSEMBLY. SAMPLER
SAMPLER 2-6.5 GHZ (PREFERRED)
SAMPLER 2-6.0 GHZ
(ALTERNATE FOR 5086-7097)

28480
28480
28480
28480
28480

1251-3172
2200-0107
85660-60008
5086-7097
5086-7292

t
I 1

1
1
1
20
20

*Indicates factory-selected value

8X560-60226 Parts List
Page 1 of 1

I

I

HP Part Number 85660-60256
A6A9 Phase Lock Box

Reference
Designation

HP Part
Number

A6A9

85660-60256

A6A9Al

85660-60253

A6A9AlU2
A6A9OSl
A6A9Jl
A6A9J2

C
c

;Itl
-

Description

Mfr
Code

Mfr Part
Number

1

PHASE LOCK ASSEMBLY
(SERIAL PREFIX: 2504A)

28480

85660-60256

:

1

28480

85660-60253

1813-0213
1990-0485
1250-0544
1250-0544

c
c

1
1
1
1

PHASE LOCK BOARD ASSEMBLY (PART OF A6A9.
MAY NOT BE ORDERED SEPARATELY.) (PARTS
LIST INCLUDED IN THIS SECTION.)
IC WIOEBANO AMPL TO-39 PKG
LEO-LAMP LUM-INT=2MCO IF=SOMA-MAX BVR=5V
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM

04713
28480
98291
98291

MWA130
HLMP-1503
051-049-0000-220
051-049-0000-220

A6A9J3
A6A9L14
A6A9L15
A6A9L16
A6A9L17

1250-0544
9135-0002
9135-0002
9135-0002
9135-0002

s
E
E
E
a

1
1
1
1
1

CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS

98291
33095
33095
33095
33095

051-049-0000-220
51-744-018
51-744-018
51-744-018
51-744-018

A6A9L18
A6A9L19
A6A9MP2
A6A9MP3
A6A9MP4

9135-0002
9135-0002
85660-80061
1250-1142
1250-1143

a
8

3
5
6

1
1
1
1
1

FILTER-LOW PASS SOLDER-TERMS
FILTER-LOW PASS SOLDER-TERMS
INSULATOR MYLAR CLEAR
WASHER-LK INTL T l/2 IN .26-IN-IO (55)
NUT-RF CONNECTOR SERIES SMA HEX NUT (55

33095
33095
28480
16179
16179

51-744-018
51-744-018
85660-80061
2098-5856-04
2098-5862-00

A6A9MP5
A6A9MP6
A6A9MP7
A6A9MP8
A6A9MP9

2190-0557
2200-0140
2200-0148
35660-20226
35660-20225

7
7
5
6
5

1
2c
2c
1
1

WASHER-LK INTL T NO. 10 .195-IN-IO (54)
SCREW-MACH 4-40 .25-IN-LG 100 OEG
SCREW-MACH 4-40 .5-IN-LG 100 OEG
COVER BOTTOM
HOUSING PHASE LOCK BOX

78189
77250
77250
28480
28480

1210-06-00-0551

A6A9MPlO
A6A9MPll
A6A9MP12
A6A9MP13
A6A9MP14

!950-0078
35660-00089
36701-00054
1251-3172
!200-0109

9
7
a
7
8

1
1
1
1
2

NUT-HEX-DEL-CHAM lo-32-THO .067-IN-THK
COVER PHASE LOCK
SPACER SAMPLER
CONNECTOR-SGL CONT SKT .03-IN-BSC-SZ RN0
SCREW-MACH 4-40 .438-IN-LG PAN-HO-POZI

74163
28480
28480
00779
77250

500220
85660-00089
86701-00054
2-331677-9

A6A9MP15
A6A9Ul
A6A9Ul

35660-20008
5086-7097
5086-7292

2
6
3

1
1
0

SAMPLER BOARD
SAMPLER 2-6.5 GHZ (PREFERRED)
SAMPLER 2-6.5 GHZ
(ALTERNATE FOR 5086-7097)

28480
28480
28480

85660-20008
5086-7097
5086-7292

85660-20226
85660-20225

-

*Indicates factory-selected value

85660-60256 Parts List
Page 1 or 1

HP Part Number 85660-60202
A6A9Al Phase Lock Board
HP Part
Number

C
c

A6A9Al

85660-60202

i

A6A9AlCl
A6A9AlC2
A6A9AlC3
A6A9AlC4
A6A9AlC5

0160-4835
0160-4574
0160-4574
0160-3874
0160-3878

7
1
1
2
6

A6A9AlC6
A6A9AlC7
A6A9AlCB
A6A9AlC9
A6A9AlClO

0160-4084
0160-3878
0160-4494
0160-4494
0160-3878

A6A9AlCll
A6A9AlC12
A6A9AlC13
A6A9AlC14
A6A9AlC15

Reference
Designation

at!
1

Description

Mfr
Code

Mfr Part
Number

BOARD ASSEMBLY, PHASE LOCK (SERIAL
PREFIXES: 2140A-2503A)

28481

85660-60202

5
1
1
1

CAPACITOR-FXO .lUF +-lo% 50VOC CER
CAPACITOR-FXO 1OOPF +-lo% 1OOVOC CER
CAPACITOR-FXO 1OOOPF +-10X 1OOVOC CER
CAPACITOR-FXO 1OPF +-.5PF LOOVOC CER O+CAP-FXO 1OOOpF 100 V

04222
284ac
04222

SA115C104KAAH
1060-4574
SAlOlC102KAAH
F012C06201000
SR201C102MAAH

a
6
4
4
6

1
1
1
1
1

CAP-FXO O.luF 50 V
CAP-FXO 1OOOpF 100
CAPACITOR-FXO 39PF
CAPACITOR-FXO 39PF
CAP-FXO 1OOOpF 100

56289
04222

0160-3878
0160-4385
0160-3878
0160-3878
0160-4084

6
2
6
6
a

1
1
1
1

CAP-FXO 1OOOpF 100
CAP-FXO 15pF 200 V
CAP-FXO 1OOOpF 100
CAP-FXO 1OOOpF 100
CAPACITOR-FXO .lUF

A6A9AlC16
A6A9AlC17
A6A9AlClB
A6A9AlC19
A6A9AlC20

0160-3878
0160-3878
0160-3878
0160-4387
0160-4350

6
6
6
4
1

1
1
1
1
1

CAP-FXO 1OOOpF 100
CAP-FXO 1OOOpF 100
CAP-FXO IOOOpF 100
CAPACITOR-FXO 47PF
CAP-FXO 68pF 200 V

A6A9AlC21
A6A9AlC22
A6A9AlC23
A6A9AlC24
A619AlC25

0180-0500
0160-4387
0160-4574
0160-3875
D160-4084

7
4
1
3
3

A6A9AlC26
A6A9AlC27
A6A9AlC29
A6A9AlC30
A6A9AlC31

3160-3878
3160-3878
0121-0452
0160-4492
0160-4084

A6A9AlC32
A6A9AlC33
A6A9AlC34
A6A9AlC35
A6A9AlC36

1

V
+-5x POOVOC CER 0+-30
+-5% 200VOC CER 0+-30
V

04222

04222

1C20X7R104M0506
SR201C102MAAH
FO12COG20390J
FO12COG20390J
SR201C102MAAH

V

04222

V
V
+-20% 50VOC CER

04222
04222
28480

V
V
V
+-5% 2OOVOC CER 0+-30

04222
04222
04222

SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
FO12COG2047OJ
F012C0620680J

1
1
1
1
1

CAP-FXO 47uF 20 V TA
CAPACITOR-FXO 47PF +-5x ZOOVOC CER 0+-30
CAPACITOR-FXO 1OOOPF +-lo% 1OOVOC CER
EAPACITOR-FXO 22PF +-5% 200VOC CER 0+-30
EAPACITOR-FXO .lUF +-20x 50VOC CER

56289

19901114
FO12COG20470J
SAlOlC102KAAH
FO12COG20220J
0160-4084

5
3
4
2
a

1
1
1
1
1

ZAP-FXO 1OOOpF 100 V
ZAPACITOR-FXO 1OOOPF +-20% 100 VOC CER
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M
CAPACITOR-FXO 18PF +-5% 200VOC CER 0+-30
CAP-FXO O.luF 50 V

04222
28480
74970

0160-4389
0160-4383
0160-3878
0160-3878
0160-3878

6
0
6
6
6

1
1
1
1
1

CAP-FXO 1OOpF 200 V
CAPACITOR-FXO 6.8PF +-.5PF EOOVOC CER 0+
CAP-FXO 1OOOpF 100 V
CAP-FXO 1OOOpF 100 V
CAP-FXO 1OOOpF 100 V

04222
04222
04222
04222

SR202AlOlJAAH
F012C0G206R80
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH

A6A9AlC37
A6A9AlC38
A6A9AlC39
A6A9AlC40
A6A9AlC41

0160-4441
0160-4084
0180-2139
0180-0500
0180-0197

1
a
2
7
6

1
1
1
1

CAPACITOR-FXO
CAP-FXO O.luF
CAP-FXO 1OuF
CAPACITOR-FXO
CAPACITOR-FXO

04222
56289
56289
28480
56289

SR305C474KAAH
lC20X7R104M0508
1090106X0060C2-OYP
0180-0500
1500225X9020A2-OYS

A6A9AlC42
A6A9AlC43
A6A9AlC44
A6A9AlC45
A6A9AlC46

0160-4574
0160-4084
D160-4835
0160-4574
D160-0158

1
3
7
1
3

1
1
1
1
1

CAPACITOR-FXO 1OOOPF +-lo% IOOVOC CER
CAP-FXO O.luF 50 V
CAPACITOR-FXO .lUF +-lo% 50VOC CER
CAPACITOR-FXO 1OOOPF +-lo% 1OOVOC CER
CAP-FXO 56OOpF 200 V POLYE-FL

04222
56289
04222
28480
84411

SAlOlC102KAAH
lC20X7R104M0508
SA115C104KAAH
0160-4574
HEW-238M

.47UF +-lo% SOVOC CER
50 V
60 V UT-SLG-TA-ELCTLT
47UF+-20% 20VOC TA
2.2UF+-10% 20VOC TA

04222
28480

56289

SR2OlC102MAAH
RPE121-105COG150J200V
SR201C102MAAH
SR201C102MAAH
0160-4084

SR201C102MAAH
0160-3878
187-0103-028
FO12COG2O180J
1C20X7R104M0508

-

*Indicates factoyselected value

8X60-60202 Parts List
Page 1 of 3

HP Part Number 85660-60202
A6A9Al Phase Lock Board

Reference
Designation

HP Part
Number

2
0

Mfr
Code

Description

31
-

Mfr Part
Number

A6A9AlC48
A6A9AlC49
A6A9AlC50
A6A9AlC51
A6A9AlC52

0160-4084
0160-3878
0160-4801
0160-4801
0160-4492

a
E
7
7
2

1
2
1
1

CAPACITOR-FXO .lUF +-20% 50VOC CER
CAP-FXO IOOOpF 100 V
CAPACITOR-FXO 1OOPF +-5% 1OOVOC CER
CAPACITOR-FXO 1OOPF +-5x IOOVOC CER 0+-3
CAPACITOR-FXO 18PF +-5X 200VOC CER 0+-30

A6A9AlC53
A6A9AlC54
AGASAlCRl
A6A9AlCR2
A6A9AlCR3

0160-4492
0160-3878
1901-0954
1901-0050
1901-0050

2
E
E
3
?

1
1
1
1
1

CAPACITOR-FXO 18PF +-5x LOOVOC CER 0+-30
CAP-FXO 1OOOpF 100 V
DIODE-CUR RGLTR lN5285 270UA DO-7
DIODE-SWITCHING aov 200MA 2Ns Do-35
DIODE-SWITCHING aov 200MA 2Ns Do-35

A6A9AlCR4
AGASAlOSl
A6A9AlE3
A6A9AlE4
A6A9AlE5

1901-0518

a

1

1251-0600
1251-0600
1251-0600

C
C
C

1
1
1

DIODE-SCHOTTKY SM
SEE A6A9OSl
CONNECTOR-SGL CONT
CONNECTOR-SGL CONT
CONNECTOR-SGL CONT

SQ
SQ
SQ

27264
27264
27264

16-06-0034
16-06-0034
16-06-0034

A6A9AlE6
A6A9AlJ4
A6A9AlLl
A6A9AlL2
A6A9AlL3

1251-0600
1250-1538
9135-0073
9140-0158
9140-0158

C
3
3
6
E

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ SQ
CONNECTOR-RF SMB M PC 50-OHM
INDUCTOR RF-CH-ML0 51NH +-6.596% 2.60-MM
INDUCTOR RF-CH-ML0 1UH +-lo% .1050-INX.2
INDUCTOR RF-CH-ML0 1UH +-lo% .1050-INX.2

27264
28480
06560
32159
32159

16-06-0034
1250-1538

A6A9AlL4
A6A9AlL5
A6A9AlL6
A6A9AlLB
A6A9AlL9

9135-0073
9100-2248
9140-0158
9100-2247
9100-2247

3
E

1
1

E
4
4

1
1

INDUCTOR RF-CH-ML0 51NH +-6.596% 2.60-MM
INDUCTOR RF-CH-ML0 120NH +-lo% .1050-INX
INDUCTOR RF-CH-ML0 1UH 10% .105OX.26LG
INDUCTOR RF-CH-ML0 1OONH +-lo% .1050-INX
INDUCTOR RF-CH-ML0 1OONH +-lo% .1050-INX

06560
24226
28480
24226
24226

A6A9AlLlO
A6A9AlLll
A6A9AlL12
A6A9AlL13
A6A9AlL19

9100-2251
85660-80012
9135-0068
9100-2255
9140-0142

C
4
E
4
E

1
1
1
1
1

INDUCTOR RF-CH-ML0 220NH +-lo% .1050-INX
COIL 24NH
INDUCTOR RF-CH-ML0 33NH +-6.36%
INDUCTOR RF-CH-ML0 470NH +-lo% .1050-INX
INDUCTOR RF-CH-ML0 2.2UH +-10X .1050-INX

24226
28480
06560
24226
99800

lOM220K
85660-80012

A6A9AlL20
A6A9AlL21
A6A9AlQl
A6A9AlQ2
A6A9AlQ3

1140-0142
l135-0068
.854-0696
.854-0247
.854-0295

6
6
2
3
7

1
1
1
1
1

:NOUCTOR RF-CH-ML0 2.2UH +-lo% .1050-INX
:NOUCTOR RF-CH-ML0 33NH +-6.36%
-RANSISTOR NPN SI TO-72 PO=200MW
'RANSISTOR NPN SI TO-39 PO=lW FT=BOOMHZ
-RANSISTOR-DUAL NPN PO=400MW

99800
06560
25403
28480
04713

1025-28

A6A9AlQ4
A6A9AlQ5
A6A9AlQ6
A6A9AlRl
A6A9AlR2

.854-0632
.853-0007
.853-0007
1698-3447
1698-3437

6
7
7
4
2

1
1
1
1
1

'RANSISTOR NPN SI PO=lBOMW FT=4GHZ
'RANSISTOR PNP 2N3251 SI TO-18 PO=360MW
'RANSISTOR PNP 2N3251 SI TO-18 PO=360MW
!ESISTOR 422 1% .125W TF TC=O+-100
!ESISTOR 133 1% .125W TF TC=O+-100

25403
04713
04713
19701
19701

BFR91
2N3251
2N3251
SFR25H
SFR25H

A6A9AlR3
A6A9AlR4
A6A9AlR5*
A6A9AlR6
A6A9AlR7

1698-3431
1757-0394
1757-0401
1757-0421
1757-0402

6
0
0
4
1

1
1
1
1
1

!ESISTOR
!ESISTOR
IESISTOR
IESISTOR
!ESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A9AlRB
A6A9AlR9
A6A9AlRlO*

1698-3431
1757-0401
)757-0280

6
0
3

1
1
1

IESISTOR 23.7 1% .125W TF TC=O+-100
IESISTOR 100 +-1% .125W TF TC=O+-100
IESISTOR 1K 1% .125W F TC=O+-100

19701
19701
24546

SFR25H
SFR25H
C4-l/B-TO-1001-F

04222
04713
9N171
9N171

SIG
PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14~MM-BSC-SZ

23.7 1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
110 +-1% .125W TF TC=O+-100

-

8566040202 Parts List
Page 2 of 3

28480
04222
28480
04222

*Indicates factory-selected value

0160-4084
SR201C102MAAH
0160-4801
SA102AlOlJAAH
F012COG2O180J
FO12COG20180J
SR201C102MAAH
lN5285
lN4150
lN4150
5082-2800

lA1002M +-lo%
lA1002M +-10X

lOM120K
9140-0158
1OMlOOK
1OMlOOK

lOM470K
1025-28

1854-0247

HP Part Number 85660-60202
A6A9Al Phase Lock Board
Reference
Designation

HP Part
Number

C
c

3Y
-

Description

Mfr
Code

Mfr Part
Number

A6A9AlRll
A6A9AlR12

2100-2574
0757-0394

:
(

1
1

RESISTOR-TRMR 500 lo% TKF SIDE-AOJ l-TRN
RESISTOR 51.1 +-1% .125W TF TC=O+-100

73138
19701

82PAR500
SFR25H

A6A9AlR13
A6A9AlR14
A6A9AlR15
A6A9AlR16
A6A9AlR17

0757-0401
0757-0402
0757-0394
0698-3136
0698-3136

(
I
(
E
I

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

100 +-1% .125W TF TC=O+-100
110 +-1% .125W TF TC=O+-100
51.1 1% .125W F TC=O+-100
17.8K 1% .125W TF TC=O+-100
17.8K 1% .125W TF TC=O+-100

19701
19701
24546
19701
19701

SFR25H
SFR25H
C4-l/B-TO-51Rl-F
SFR25H
SFR25H

A6A9AlRlB
A6A9AlR19
A6A9AlR20
A6A9AlR21
A6A9AlR22

0757-0416
0757-0417
0757-0438
0698-3452
0757-0442

i
I
:

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
562 +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
147K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A9AlR23
A6A9AlR24
A6A9AlR25
A6A9AlR26
A6A9AlR27*

0757-0442
0698-3162
0757-0442
0698-7421
0757-0459

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
46.4K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
40K +-0.25% .125W TF TC=O+-100
56.2K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
5033R
SFR25H

A6A9AlR28
A6A9AlR29
A6A9AlR30
A6A9AlR31
A6A9AlR32

0698-3459
0757-0465
0757-0463
0757-0418
0757-0438

I
t
1
c

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

383K 1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
82.5K +-1% .125W TF TC=O+-100
619 +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A9AlR33
A6A9AlR34
A6A9AlR35
A6A9AlR36
A6A9AlR37

0757-0442
0757-0278
0757-0278
0757-0442
0757-0816

c
c
c
c

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
1.78K +-I% .125W TF TC=O+-100
1.78K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
681 +-1% .5W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
5053R

A6A9AlR38
A6A9AlR39
A6A9AlR40
A6A9AlR41
A6A9AlTl

2100-1738
0757-0470
7757-0419
3757-0419
38552-6044

1
1
1
1
1

RESISTOR-TRMR 10K lo% C TOP-AOJ I-TRN
RESISTOR 162K +-1% .125W TF TC=O+-100
PESISTOR 681 +-1% .125W TF TC=O+-100
{ESISTOR 681 +-I% .125W TF TC=O+-100
TRANSFORMER, RF, 5-PIN

73138
19701
19701
19701
28480

82PRlOK
SFR25H
SFR25H
SFR25H
08552-6044

A6A9AlT2
A6A9AlUl

18552-6044
tai3-0213

1
1

28480
04713

08552-6044
MWA130

A6A9AlU2

tal3-0213

1

04713

MWA130

A6A9AlU3
A6A9AlU4

ta26-0987
t826-0306

1
1

TRANSFORMER, RF, 5-PIN
[C WIOEBANO AMPLIFIER TO-39 PKG
(MUST BE ORDERED SEPARATELY)
[C WIOEBANO AMPLIFIER TO-39 PKG
(MUST BE ORDERED SEPARATELY)
[C OP AMP PRCN B-DIP-C PKG
[C COMPARATOR GP QUAD 14-DIP-C PKG

28480
27014

1826-0987
LM339AJ

AGASAlVRl
A6A9AlWl

1902-0041
1460-1489

1
1

)IOOE-ZNR 5.11V 5% DO-35 PO=.4W
dIREFORM BE CU AG

04713
17450

1
c
c
(
E
i
E

:

1

-

*Indicates factory-selected value

85660-60202 Parts List
Page 3 or 3

HP Part Number 85660-60253

-

A6A9Al Phase Lock Board

HP Part
Number

C
D

A6A9Al

85660-60253

3

1

PHASE LOCK BOARD ASSEMBLY
(SERIAL PREFIX: 2504~)

28480

85660-60253

A6A9AlCl
A6A9AlC2
A6A9AlC3
A6A9AlC4
A6A9AlC5

0160-4835
0160-4835
0160-4574
0160-3874
0160-3878

7
7
1
2
6

1
1
1
1
1

CAPACITOR-FXD .lUF +-lo% SOVDC CER
CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD 1OOOPF +-10x 1OOVDC CER
CAPACITOR-FXD 1OPF +-.5PF 200VDC CER
CAP-FXD 1OOOpF 100 V

04222
04222
04222

SA115C104KAAH
SA115C104KAAH
SAlOlC102KAAH
FD12COG2DlOOD
SR201C102MAAH

A6A9AlC6
A6A9AlC7
A6A9AlC8
A6A9AlC9
A6A9AlClO

0160-4084
0160-3878
0160-4494
0160-4494
0160-3878

8
6
4
4
6

1
1
1
1
1

CAP-FXD O.luF 50 V
CAP-FXD 1OOOpF 100
CAPACITOR-FXD 39PF
CAPACITOR-FXD 39PF
CAP-FXD 1OOOpF 100

56289
04222

A6A9AlCll
A6A9AlC12
A6A9AlC13
A6A9AlC14
A6A9AlC16

0160-3878
0160-4385
0160-3878
0160-3878
0160-3878

6
2
6
6
6

1
1
1
1
1

CAP-FXD
CAP-FXD
CAP-FXD
CAP-FXD
CAP-FXD

A6A9AlC17
A6A9AlC18
A6A9AlC19
A6A9AlC20
A6A9AlC21

0160-3878
0160-3878
0160-4387
0160-4350
0180-0500

6
6
4
1
7

A6A9AlC22
A6A9AlC23
A6A9AlC24
A6A9AlC26
A6A9AlC29

0160-4387
0160-4574
0160-3875
0160-3878
0121-0452

A6A9AlC30
A6A9AlC31
A6A9AlC32
A6A9AlC33
A6A9AlC34

Reference
Designation

31
-

Description

1OOOpF 100
15pF 200 V
1OOOpF 100
1OOOpF 100
IOOOpF 100

V
+-5x 200VDC CER O+-30
+-5% 200VDC CER O+-30
V

Mfr
Code

04222

04222

Mfr Part
Number

lC20X7R104M0508
SR201C102MAAH
FD12COG2D390J
FD12COG2D390J
SR201C102MAAH

V

04222

V
V
V

04222
04222
04222

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 47PF +-5% 2OOVDC CER O+-30
CAP-FXD 68pF 200 V
CAP-FXD 47uF 20 V TA

04222
04222

4
1
3
6
4

1
1
1
1
1

CAPACITOR-FXD 47PF +-5% 200VDC CER O+-30
CAPACITOR-FXD 1OOOPF +-lo% 1OOVOC CER
CAPACITOR-FXD 22PF +-5% LOOVDC CER O+-30
CAP-FXD 1OOOpF 100 V
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V PC-M

0160-4492
0160-4084
0160-4389
0160-4383
0160-3878

2
8
6
0
6

1
1
1
1
1

CAPACITOR-FXD 18PF +-5% 200VDC CER O+-30
CAP-FXD O.luF 50 V
CAP-FXD 1OOpF 200 V
CAPACITOR-FXD 6.8PF +-.5PF ZOOVDC CER
CAP-FXD 1OOOpF 100 V

04222

FD12COG20180J
lC20X7R104M0506
SR202AlOlJAAH
FD12COG2D6R8D
SR201C102MAAH

A6A9AlC35
A6A9AlC36
A6A9AlC37
A6A9AlC38
A6A9AlC39

D160-3878
3160-3878
3160-4441
3160-4084
3180-2139

6
6
1
8
2

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100
CAPACITOR-FXD .47UF
CAP-FXD O.luF 50 V
CAP-FXD 1OuF 60 V

04222
04222
04222
56289
56289

SR201C102MAAH
SR201C102MAAH
SR305C474KAAH
lC20X7R104M0508
109D106X0060C2-DYP

A6A9AlC40
A6A9AlC41
A6A9AlC42
A6A9AlC43
A6A9AlC44

3180-0229
3180-0197
3160-4574
3160-4084
3160-4835

7
8
1
8
7

1
1
1
1
1

CAP-FXD 33uF 10 V TA
CAPACITOR-FXD 2.2lJF+-10% EOVDC TA
CAPACITOR-FXD 1OOOPF +-lo% 1OOVDC CER
CAP-FXD O.luF 50 V
CAPACITOR-FXD .lUF +-IO% 50VDC CER

56289
56289
04222
56289
04222

150D336X901082-DYS
150D225X9020A2-DYS
SAlOlC102KAAH
lC20X7R104M0508
SA115C104KAAH

A6A9AlC46
A6A9AlC49
A6A9AlC50
A6A9AlC51
A6A9AlC52

3160-0158
3160-3878
3160-3879
3160-4801
3160-4492

9
6
7
7
2

1
1
1
1
1

CAP-FXD 56OOpF 200 V POLYE-FL
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD 1OOPF +-5x 1OOVDC CER
CAPACITOR-FXD 18PF +-5% EOOVDC CER O+-30

84411
04222
04222
04222

HEW-238M
SR201C102MAAH
SR201C103MAAH
SA102AlOlJAAH
FD12COG2D180J

V
V
+-lo% 50VDC CER
UT-SLG-TA-ELCTLT

56289

04222
04222
74970

56289
04222

SR201C102MAAH
RPE121-105COG150J200V
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
FD12COG2047OJ
FD12COG2D680J
19901114
FD12COG2D470J
SAlOlC102KAAH
FD12COG20220J
SR201C102MAAH
187-0103-028

-

*Indicates factory-selected value

8566040253 Parts List
Page 1 of 3

HP Part Number 85660-60253
A6A9Al Phase Lock Board
Reference
Designation

HP Part
Number

C
c

a!

Description

Mfr
Code

Mfr Part
Number

A6A9AlC53
A6A9AlC54
AGASAlCRl
A6A9AlCR2
A6A9AlCR3

0160-4492
0160-3878
1901-0954
1901-0050
1901-0050

i
E
E
2
2

1
1
1
1
1

CAPACITOR-FXD 18PF +-5% 200VDC CER O+-30
CAP-FXD 1OOOpF 100 V
DIODE-CUR RGLTR lN5285 270UA DO-7
DIODE-SWITCHING 80V 200MA 2NS DO-35
DIODE-SWITCHING 80V 200MA 2NS DO-35

04222
0471:
9N171
9N171

FD12COG2D180J
SR201C102MAAH
lN5285
lN4150
lN4150

A6A9AlCR4
AGASAlDSl
A6A9AlE3
A6A9AlE4
A6A9AlE5

1901-0518
1990-0485
1251-0600
1251-0600
1251-0600

E
E
c

C
C

1
1
1
1
1

DIODE-SCHOTTKY SM SIG
LED-LAMP LUM-INT=EMCD IF=30MA-MAX BVR=5V
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

2848C
27264
27264
27264

5082-2800
HLMP-1503
16-06-0034
16-06-0034
16-06-0034

A6A9AlE6
A6A9AlJ4
A6A9AlLl
A6A9AlL2
A6A9AlL3

1251-0600
1250-2192
3135-0073
3140-0158
3140-0158

0
7
3
6
6

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-RF M SMB
INDUCTOR RF-CH-MLD 51NH +-6.596% 2.6D-MM
INDUCTOR RF-CH-MLD 1UH +-10x .105D-INX.2
INDUCTOR RF-CH-MLD 1UH +-lo% .105D-INX.2

27264
98291
06560
32159
32159

A6A9AlL4
A6A9AlL5
A6A9AlL6
A6A9AlL8
A6A9AlL9

3135-0073
3100-2248
3100-2251
3100-2247
3100-2247

3
5
0
4
4

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

RF-CH-MLD 51NH +-6.596% 2.60-MM
RF-CH-MLD 120NH +-IO% .lOSD-INX
RF-CH-MLD 220NH +-lo% .lOSD-INX
RF-CH-MLD 1OONH +-lo% .105D-INX
RF-CH-MLD 1OONH +-10x .105D-INX

06560
24226
24226
24226
24226

A6A9AlLlO
A6A9AlLll
A6A9AlL12
A6A9AlL13
A6A9AlL19

3100-2251
35660-80012
3135-0068
3100-2255
3140-0142

0
4
6
4
8

1
1
1
1
1

INDUCTOR RF-CH-MLD 220NH +-lo% .105D-INX
INDUCTOR 24NH
INDUCTOR RF-CH-MLD 33NH +-6.36%
INDUCTOR RF-CH-MLD 470NH +-IO% .105D-INX
INDUCTOR RF-CH-MLD 2.2UH +-10x .lOSD-INX

24226
28480
06560
24226
99800

lOM220K
85660-80012

A6A9AlL20
A6A9AlL21
AGASAlMPl
A6A9AlMP3
A6A9AlMP4

3140-0142
1135-0068

8
6

1
1

99800
06560

1025-28

1251-2194
1590-0519

1
7

3
1

INDUCTOR RF-CH-MLD 2.2UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 33NH +-6.36%
NOT ASSIGNED
CONNECTOR-SGL CONT SKT .OEl-IN-BSC-SZ
THREADED INSERT-NUT 4-40 .062-IN-LG STL

00779
46384

3-331272-O
KF2-440-ET

A6A9AlMP5
A6A9AlQl
A6A9AlQ2
A6A9AlQ3
A6A9AlQ4

1151-0013
.854-0696
.854-0378
.854-0295
.854-0632

4
2
7
7
6

1
1
1
1
1

WIRE 22AWG 1X22
TRANSISTOR NPN SI TO-72 PD=200MW
TRANSISTOR NPN 2N5109 SI TO-39 PD=800MW
TRANSISTOR-DUAL NPN PD=400MW
TRANSISTOR NPN SI PD=180MW FT=4GHZ

92194
25403
04713
04713
25403

298

BFR91

A6A9AlQ5
A6A9AlQ6
A6A9AlRl
A6A9AlR2
A6A9AlR3

.853-0007
.853-0007
1698-3447
1698-3437
1698-3431

7
7
4
2
?J

1
1
1
1
1

TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW
RESISTOR 422 1% .125W TF TC=O+-100
?ESISTOR 133 1% .125W TF TC=O+-100
?ESISTDR 23.7 1% .125W TF TC=O+-100

04713
04713
19701
19701
19701

213251
2N3251
SFR25H
SFR25H
SFR25H

A6A9AlR4
A6A9AlR5*
A6A9AlR6
A6A9AlR7
A6A9AlR8

1757-0394
1757-0401
1757-0421
1757-0402
1698-3431

3
1
1
1
5

1
1
1
1
1

?ESISTOR
?ESISTOR
iESISTOR
1ESISTOR
?ESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A9AlR9
A6A9AlRlO*
A6A9AlRll

1757-0401
1757-0424
'loo-2574

I
I
3

1
1
1

2ESISTOR 100 +-1% .125W TF TC=O+-100
tESISTOR l.lK +-1X .125W TF TC=O+-100
IESISTOR-TRMR 500 10% TKF SIDE-ADJ l-TRN

19701
19701
73138

SFR25H
SFR25H
82PAR500

51.1 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
110 +-1% .125W TF TC=O+-100
23.7 1% .125W TF TC=O+-100

-

8566040253 Parts List
Page 2 of 3

*Indicates factory-selected value

16-06-0034
051-051-0409-220
lA1002M +-lo%
lA1002M +-lo%

lOM120K
10M220K
IOMlOOK
1OMlOOK

lOM470K
1025-28

2N5109

HP Part Number 85660-60253
A6A9Al Phase Lock Board
Reference
Designation

HP Part C
Number D Qty

Description

A6A9AlR12
A6A9AlR13

0757-0394
0757-0401

0
0

1
1

RESISTOR 51.1 +-1X .125W TF TC=O+-100
RESISTOR 100 +-1% .125W TF TC=O+-100

A6A9AlR14
A6A9AlR15
A6A9AlR16
A6A9AlR17
A6A9AlR18

0757-0402
0698-3435
0698-3136
0698-3136
0757-0416

1
0
8
8
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

A6A9AlR19
A6A9AlR20
A6A9AlR21
A6A9AlR22
A6A9AlR23

0757-0417
0757-0438
0698-3452
0757-0442
0757-0442

8
3
1
9
9

1
1
1
1
1

A6A9AlR24
A6A9AlR25
A6A9AlR26
A6A9AlR27
A6A9AlR28

0698-3162
0757-0442
0698-7421
0757-0459
0698-3459

0
9
2
8
8

A6A9AlR29
A6A9AlR30
A6A9AlR31
A6A9AlR32
A6A9AlR33

0757-0465
0757-0463
0757-0418
0757-0438
0757-0442

A6A9AlR34
A6A9AlR35
A6A9AlR36
A6A9AlR37
A6A9AlR38

Mfr
Code

Mfr Part
Number

19701
19701

SFR25H
SFR25H

110 +-1X .125W TF TC=O+-100
38.3 1% .125W TF TC=O+-100
17.8K 1% .125W TF TC=O+-100
17.8K 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

562 +-1X .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
147K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

46.4K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
40K +-0.25% .125W TF TC=O+-100
56.21: +-1X .125W TF TC=O+-100
383K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
5033R
SFR25H
SFR25H

6
4
9
3
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1OOK +-1% .125W TF TC=O+-100
82.51: +-1% .125W TF TC=O+-100
619 +-1X .125W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

0757-0278
0757-0278
0757-0442
0757-0816
2100-4184

9
9
9
1
5

1
1
1
1
1

RESISTOR 1.78K +-1% .125W TF TC=O+-100
RESISTOR 1.78K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 681 +-1% .5W TF TC=O+-100
RESISTOR-TRMR IOK
10% TKF
TOP-ADJ l-TRN

19701
19701
19701
19701
32997

SFR25H
SFR25H
SFR25H
5053R
3329H-EG9-103

A6A9AlR39
A6A9AlR40
A6A9AlR41
A6A9AlR42
A6A9AlTl

0757-0470
0757-0419
0757-0419
0757-0123
08552-6044

3
0
0
3
1

1
1
1
1
1

RESISTOR 162K +-1% .125W TF TC=O+-100
RESISTOR 681 +-I% .125W TF TC=O+-100
RESISTOR 681 +-1% .125W TF TC=O+-100
RESISTOR 34.8K +-1X .125W TF TC=O+-100
TRANSFORMER RF 5-PIN

19701
19701
19701
19701
28480

SFR25H
SFR25H
SFR25H
SFR25H
08552-6044

A6A9AlT2
A6A9AlUl

08552-6044
1813-0213

1
3

1
1

28480
04713

08552-6044
MWA130

A6A9AlU2

1813-0213

3

1

04713

MWA130

A6A9AlU3
A6A9AlU4

1826-1049
1826-0306

2
2

1
1

TRANSFORMER RF 5-PIN
IC WIDE BAND AMPLIFIER TO-39 PKG
(MUST BE ORDERED SEPARATELY)
IC WIDE BAND AMPLIFIER TO-39 PKG
(MUST BE ORDERED SEPARATELY)
IC OP AMP PRCN 8-DIP-C PKG
IC COMPARATOR GP QUAD 14-DIP-C PKG

06665
27014

OP-27GZ
LM339AJ

AGASAlVRl
A6A9AlWl

1902-0041
1460-1489

4
8

1
1

DIODE-ZNR 5.11V 5% DO-35 PD=.4W
WIREFORM BE CU AG

04713
17450

*Indicates factoyselected value

8566040253 Parts List
Page 3 of 3

DSI ON=
LOCKED
TO
300

A6A9Jl
MHZ OUT

I

c29
TRIPLER MATCH

TO A6A9J2
100 MHZ
CAL OUTPUT

TO A6A9J3
100 MHZ INPUT
Rl 1
CAL ADJUST

A6A9 J4
VT0 TUNE
I

I

1
16

R38
BALANCE

A6A9Al Phase Lock Board Component Locations, 85660-60202

c29
TRIPLER M A T C H

T O A6A9Jl
DSl O N =
3800 M H Z O\ U T L O C K E D

T O A6A9J2
100 MHZ OUT

Rll
CAL OUTPUT

T O A6ASJ3
100 MHZ IN

\
\

s =I+]
:al,,r;dii~~&
PI
1’6

2
T O A6A9J4
TUNE VOLTAGE
OUT

A6A9Al Phase Lock Board Component Locations, 85660-60253

\
R38
BALANCE

A6AlO
A6AlO Miscellaneous Bias/Relay Driver, Circuit Description
This assembly is a collection of circuits necessary for proper operation of other assemblies in
the A6 RF Module. It contains nine circuits:
1. YTX Diode Bias
2. YTX Linearity Correction
3. 3.3 GHz Oscillator Driver
4. PIN Switch Driver
5. Band Step Gains
6. RF Switch Driver
7. RF Attenuator Driver
8. j-22 V Delay
9. Power Down

YTX Diode Bias @
To maintain the precise diode bias across the YTX mixer diode, the effects of series resistance
between the bias circuit and the diode must be eliminated. To do this, a negative impedance
voltage source U2 is used.
Voltage bias to the YTX diode is adjusted from band to band via R9, R12, R15, and R18.
This voltage is applied to U2 via FET switches QS, Q7, QS, and &lo. U2 has both positive
and negative feedback. The positive feedback is controlled by R43, R46, and R47, while the
negative feedback is via R45. The fact that the positive feedback and the negative feedback
are picked off across R44 causes a negative impedance at pin Pl-7 proportional to the
amplifier gain and R44.

YTX Linearity Correction @I
Due to nonlinearities in the YTX magnet structure, some linearity correction must be made.
This is accomplished by placing resistors in parallel with the current-sense resistor in the
YTX coil driver circuit. These parallel resistors increase the coil current slightly. For current
compensation, both the point of compensation and the magnitude of compensation must be
varied.
This is accomplished in the following manner using U7D as a typical circuit: U7D is an ideal
zener circuit, that is, as long as the YTX linearity voltage is less negative than the voltage on
U7 pin 12 (the positive op amp input) diode CR5 is reverse biased. In this state, the YTX
linearity line sees a high impedance and no compensation occurs. When the YTX linearity
voltage goes more negative than the bias on U7 pin 12, diode CR5 is forward biased and U7D
A6AlO 1

becomes a voltage follower maintaining the voltage at the cathode of CR5 at the same voltage
as on U7 pin 12. In this situation, R32 and R31 are effectively in parallel with the current
sense resistor of the coil driver circuit. R31 is used to adjust the magnitude of compensation,
while R40 is used to adjust the frequency at which the compensation occurs. In a similar
manner, U7A, B, C are used to correct for higher frequency nonlinearity.

PIN Switch Driver @
The PIN switch driver converts the TTL logic level LO-BAND signal to the $20 V/-10 V
signal required by the Second Converter. The TTL level at Pl to 34 is input to the base of
Q21. A high at the base of Q21 turns Q21 on, turning on Q4, which pulls the collector of Q4
approximately +20 V. This turns on Q3, providing the +20 V signal to the PIN drive output,
Pl to 35. A low input on the LO-BAND TTL input turns Q21 off, which turns Q4 off. The
collector of Q4 then goes low, turning on Q2, and pulling the PIN drive line to -10 V.

3.3 GHz Oscillator Driver @I
The PIN drive signal is also used to turn the 3.3 GHz oscillator on in A-Band, and off in other
bands. When the PIN drive goes high, Ql is turned on which pulls its collector to -10 V. The
-10 V is the negative bias for the 3.3 GHz oscillator. When the PIN drive goes low, Ql is
turned off, dropping the oscillator bias current to zero, which turns off the 3.3 GHz oscillator.
In the on state, resistor Rl is used to adjust the oscillator bias current to 15 milliamps.

RF Switch Driver @
The coaxial RF switch is driven by darlington amplifiers U5E, and U5F. A high input on the
LO-BAND line drives the outputs of U5F low, and U5E high. A low output at U5F drives the
Coaxial RF switch relay to the A-Band (0 to 2.5 GHz) position. The reverse occurs with a
low input which drives U5E’s output low, which forces the coaxial RF switch relay to the B-E
Band (2 to 22 GHz) position.

Band Step Gains @
To correct for different input mixer conversion efficiencies and gains in the individual
frequency bands, the IF gain is changed. This is done in the A6A3 Last Converter by varying
the current through PIN attenuator diodes in the 21.4 MHz amplifier. This current is
controlled by Q12, Q14 to Q17, and Q19. In A-Band, the high output on the PIN drive line
breaks down zener VRl and turns on Ql2. This applies -40 V to the potentiometer R21.
Adjusting R21 varies the current in the step gain in A-Band.
The gain of A6A3 Last Converter is adjusted in each band as each transistor, Ql2, Q14 to
Q17, and Q19, is turned on for each individual band.

2 A6AlO

RF Attenuator Driver @
The RF attenuator driver is similar to the RF Switch driver. The major difference is the logic
decoding to the inputs of the darlington switch drivers. The input to the logic circuit is the
standard 10, 20, 40, dB attenuation logic levels. The logic circuit Ul decodes this to the 10,
20, 20, 20, dB attenuation logic levels required to drive the RF attenuator. The output drivers
consist of darlington amplifiers driven by the outputs of Ul or the inverted outputs of Ul, via
U3. A low output of a darlington turns that line on. That is, a low at U5D pin 13, coupled
with high at U4F pin 11, enables the 10 dB attenuation position, and so forth.

Power Down @
The power down circuit switches the RF attenuator into a 40 dB attenuation position to
prevent accidental damage to A6A8 YTX or A6A6 First Converter from an input signal when
the instrument is off. When the power up signal goes low, U3 pin 10 is driven high which
turns on Q9 and Q13, forcing Ul pins 5,6, and 9, U4 pin 7, and U3 pin 5 high. This forces at
least the last two 20 dB attenuation stages in the attenuator on.

+22 V Delay @I
On power up, the instrument goes through a self-check program. To prevent the RF relays
and the attenuator from chattering during this time, the +22 V Bias to the attenuator and
RF switch is delayed for about 2.5 seconds after the power up signal goes high. This delay is
caused by R59 and ClO. When power up goes high, it takes approximately 2.5 seconds for the
voltage across Cl0 to charge up enough to turn on U3E. U3E output is inverted twice by the
darlington amplifiers U4B and U4A so that when U3E output drops, U4A output also drops
turning on Qll which applies the +22 V to the relay circuits.

HP Part Number 85660-60180
A6AlO Miscellaneous Bias/Relay Driver
HP Part
Number

C
c

A6AlO

85660-60180

I

AGAlOCl
A6AlOC2
A6AlOC3
A6AlOC4
A6AlOC5

0160-2055
0180-2206
0180-2208
0180-0116
0160-2055

A6AlOC6
A6AlOC7
A6AlOC8
A6AlOC9
AGAlOClO

Reference
Designation

w
-

Mfr
Code

Description

1

BOARD ASSEMBLY, MISC BIAS/RELAY DRIVER
(SERIAL PREFIXES: 2410~ - 2729A)

c
1
f
I

C

1
1
1
1
1

0160-4441
0160-3879
0180-0097
0160-4441
0180-0228

I
7
7
1
6

AGAlOCll
A6AlOC12
A6AlDC13
A6AlOC15
AGAlOCRl

0180-0116
0160-3879
D180-0228
3180-0228
1901-1067

A6AlOCR2
A6AlOCR3
A6AlOCR4
A6Al OCR5
A6AlOCR6

Mfr Part
Number

28480

85660-60180

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 6OUF+-10% 6VDC TA
CAPACITOR-FXD ZZOUF+-10% 1OVDC TA
CAPACITOR-FXD 6.BUF+-10% 35VDC TA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER

56289
56289
56289

805-504 Y5V 1032
150D606X9006B2-DYS
150D227X9010S2-DYS
1500685X903582-DYS
805-504 Y5V 1032

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

04222
28480
56289
04222
56289

SR305C474KAAH
0160-3879
150D476X9035S2-DYS
SR305C474KAAH
150D226X9015B2-DYS

1
7
6
6
4

1
1
1
1
1

CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
DIODE-SWITCHING 125V 175MA 60NS DO-35

56289
28480
56289
56289
27014

150D685X903582-DYS
0160-3879
150D226X9015B2-DYS
150D226X9015B2-OYS
FDH444

1901-1067
1901-1067
1901-1067
1901-1067
L901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

A6AlOCR7
A6AlOCR8
A6AlOCR9
AGAlOCRlO
AGAlOCRll

1901-1067
1901-0535
1901-0535
1901-1067
1901-0535

4
9
9
4
c

1
1
1
1
1

DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SM SIG SCHOTTKY
DIODE-SM SIG SCHOTTKY
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SM SIG SCHOTTKY

27014
28480
28480
27014
28480

FDH444
1901-0535
1901-0535
FDH444
1901-0535

A6AlOCR12
A6AlOCR13
A6AlOCR14
A6AlOCR15
A6AlOCR16

1901-0535
1901-0535
1901-0535
1901-1067
1901-0535

c

1
1
1
1
1

DIODE-SM SIG SCHOTTKY
DIODE-SCHDTTKY SM SIG
DIODE-SCHOTTKY SM SIG
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SM SIG SCHOTTKY

28480

1901-0535

5
9
4
9

27014
28480

FDH444
1901-0535

A6AlOCR17
A6AlOCR18
A6AlOCR19
A6AlOCR20
A6AlOCR21

1901-0535
1901-1067
1901-1067
1901-1067
1901-1067

9
4
4
4
4

1
1
1
1
1

DIODE-SM SIG SCHDTTKY
DIODE-SWITCHING 125V 175MA
DIODE-SWITCHING 125V 175MA
DIODE-SWITCHING 125V 175MA
DIODE-SWITCHING 125V 175MA

60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35

28480
27014
27014
27014
27014

1901-0535
FDH444
FDH444
FDH444
FDH444

A6AlOCR22
A6AlOCR23
A6AlOCR24
A6AlOCR25
A6AlOCR26

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

A6AlOCR27
A6AlOCR28
A6AlOMP2
A6AlOMP3
A6AlOMP4

1901-1067
1901-1067
1480-0073
1040-0748
1040-0749

4
4
6
3
4

1
1
2
1
1

DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU
EXTR PC BD BLK
EXTR PC BD BRN

27014
27014
72962
28480
28480

FDH444
FDH444
99-012-062-0250
4040-0748
4040-0749

.47UF +-lo% 50VDC CER
.OlUF +-20% 1OOVDC CER
47UF+-10% 35VDC TA
.47UF +-lo% 50VDC CER
22UF+-10% 15VDC TA

125V
125V
125V
125V
125V

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

-

*Indicates factory-selected value

85660-60180 Parts List
Page 1 of 4

HP Part Number 85660-60180
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation I

HP Part
Number

c
c

a!
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN
PNP
NPN
PNP
NPN

PD=SOOMk
PD=400Mk
PD=500Mk
PD=400MW
PD=500MW

0471:
0471:
0471:
0471:
0471:

2N2222A
2N2907A
2N2222A
2N2907A
2N2222A

Mfr
Code

Description

Mfr Part
Number

A6AlOQl
A6AlOQ2
A6AlOQ3
A6AlOQ4
A6AlOQ5

11854-0477
11853-0281
11854-0477
11853-0281
I 1854-0477

i
C

i

1
1
1
1
1

A6AlOQ6
A6AlOQ7
A6AlOQ8
A6AlOQ9
A6AlOQlO

I .855-0420
I.855-0420
I.855-0420
I.854-0477
I.855-0420

2
2
2
7
2

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET 2N4391 N-CHAN D-MODE TO
J-FET 2N4391 N-CHAN D-MODE TO
J-FET 214391 N-CHAN D-MODE TO
NPN 2N2222A SI TO-18 PD=500MW
J-FET 2N4391 N-CHAN D-MODE TO

17856
17856
17856
04713
17856

2N4391
2N4391
2N4391
2N2222A
2N4391

A6AlOQll
A6AlOQ12
A6AlOQ13
A6AlOQ14
A6AlOQ15

1.853-0213
1 854-0477
1 853-0281
1 854-0477
1 854-0477

7
7
9
7
7

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

PNP
NPN
PNP
NPN
NPN

2N4236 SI TO-5 PD=lW
2N2222A SI TO-18 PD=500MW
2N2907A SI TO-18 PD=400MW
2N2222A SI TO-18 PD=500MW
2N2222A SI TO-18 PD=SOOMW

04713
04713
04713
04713
04713

2N4236
2N2222A
2N2907A
2N2222A
2N2222A

A6AlOQ16
A6AlOQ17
A6AlOQl8
A6AlOQ19
A6AlOQ20

1 854-0477
1 854-0477
1 854-0477
1 854-0477
1 854-0477

7
7
7
7
7

1
1
1
1
1

[RANSISTOR
rRANSISTOR
rRANSISTOR
[RANSISTOR
[RANSISTOR

NPN
NPN
NPN
NPN
NPN

2N2222A
2N2222A
2N2222A
2N2222A
2N2222A

PD=500MW
PD=500MW
PD=SOOMW
PD=500MW
PD=SOOMW

04713
04713
04713
04713
04713

2N2222A
2N2222A
2N2222A
2N2222A
2N2222A

A6AlOQ21
AGAlORl
A6AlOR2
A6AlOR3
A6AlOR4

1 854-0472
2 loo-2574
0'698-7260
0 698-7260
0 698-7277

2
3
7
7
6

1
1
1
1
1

[RANSISTOR NPN SI DARL PD=500MW
IESISTOR-TRMR 500 10% TKF SIDE-ADJ 1-TRN
tESISTOR 10K +-1% .05W TF TC=O+-100
{ESISTOR IOK +-1% .05W TF TC=O+-100
tESISTOR 51.1K +-1% .05W TF TC=O+-100

04713
73138
19701
19701
19701

MPS-A14
82PAR500
50635
50635
5023R

A6AlOR5
A6AlOR6
A6AlOR7
A6AlOR8
A6AlOR9

0 698-7260
0 757-0346
0 698-7243
0 698-7266
2 100-0545

7
2
6
3
4

1
1
1
1
1

lESISTDR 10K +-I% .05W TF TC=O+-100
lESISTDR 10 +-1% .125W TF TC=O+-100
[ESISTOR 1.96K +-1% .05W TF TC=O+-100
lESISTOR 17.8K +-1% .05W TF TC=O+-100
IESISTOR-TRMR 1K 10% TKF SIDE-ADJ 17-TRN

19701
91637
19701
19701
73138

50635
CMF-55-1, T-l
50635
50635
67XR

AGAlORlO
AGAlORll
A6AlOR12
A6AlOR13
A6AlOR14

0 698-7281
0 699-0127
2 100-0545
0 698-7281
0 699-0127

2
3
4
2
3

1
1
1
1
1

lESISTDR 75K +-2% .05W TF TC=O+-100
lESISTOR 4641: +-1% .05W TF TC=O+-100
!ESISTOR-TRMR IK 10% TKF SIDE-ADJ 17-TRN
!ESISTOR 75K +-2% .05W TF TC=O+-100
!ESISTDR 464K +-1% .05W TF TC=O+-100

19701
11502
73138
19701
11502

5023R
RG-l/8-TO50
67XR
5023R
RG-l/8-TO50

A6AlOR15
A6AlOR16
A6AlOR17
A6AlOR18
A6AlOR19

2 100-0545
0 698-7281
0 699-0127
2 100-0545
0 698-7281

4
z
3
4
7

1
1
1
1
1

LESISTOR-TRMR IK 10% TKF SIDE-ADJ 17-TRN
!ESISTOR 75K +-2% .05W TF TC=O+-100
!ESISTOR 464K +-1% .05W TF TC=O+-100
IESISTOR-TRMR 1K 10% TKF SIDE-ADJ 17-TRN
!ESISTOR 75K +-2% .05W TF TC=O+-100

73138
19701
11502
73138
19701

67XR
5023R
RG-l/8-TO50
67XR
5023R

A6AlOR20
A6AlOR21
A6AlOR22
46AlOR23
46AlOR24

01 699-0127
2 loo-3611
Of698-7260
2 loo-3611
01698-7260

3
1
I
1
I

1
1
1
1
1

:ESISTOR 464K +-1% .05W TF TC=O+-100
:ESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TRN
:ESISTOR 10K +-1% .05W TF TC=O+-100
:ESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TRN
ESISTOR 10K +-1% .05W TF TC=O+-100

11502
32997
19701
32997
19701

RG-l/8-TO50
3292x-1-503
50635
3292x-1-503
50635

46AlOR25
46AlOR26
A6AlOR27

2 loo-3611
01 598-7260
2 loo-3611

1
I
1

1
1
1

ESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TR
ESISTOR 10K +-1% .05W TF TC=O+-100
lESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TR

32997
19701
32997

3292x-1-503
50635
3292x-1-503

i
c

2N2222A
2N2907A
2N2222A
2N2907A
2N2222A

SI
SI
SI
SI
SI

SI
SI
SI
SI
SI

TO-18
TO-18
TO-18
TO-18
TO-18

TO-18
TO-18
TO-18
TO-18
TO-18

-

85660-60180 Parts List
Page 2 of 4

*Indicates factory-selected value

HP Part Number 85660-60180
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation

HP Part
Number

c
c ;Itl

Mfr
Code

Description

Mfr Part
Number

A6AlOR28
A6AlOR29

0698-7260
2100-3611

i
I

1

1

RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TRN

19701
32997

50635
3292x-1-503

A6AlOR30
A6AlOR31
A6AlOR32
A6AlOR33
A6AlOR34

0698-7260
2100-1661
0757-0416
0698-3260
2100-1661

I
I
7
9
7

1
1
1
1
1

RESISTOR 10K +-I% .05W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-ADJ 22-TRN
RESISTOR 511 +-1% .125W TF TC=O+-100
RESISTOR 464K 1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-ADJ 22-TRN

19701
32997
19701
19701
32997

50635
3057P-DM3-203
SFR25H
SFR25H
3057P-DM3-203

A6AlOR35
A6AlOR36
A6AlOR37
A6AlOR38
A6AlOR39

0757-0416
D698-3260
2100-1661
3757-0416
3698-3260

7
9
7
7
9

1
1
1
1
1

RESISTOR 511 +-1% .125W TF TC=O+-100
RESISTOR 464K 1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 5% Ww SIDE-ADJ 22-TRN
RESISTOR 511 +-1% .125W TF TC=O+-100
RESISTOR 464K 1% .125W TF TC=O+-100

19701
19701
32997
19701
19701

SFR25H
SFR25H
3057P-DM3-203
SFR25H
SFR25H

A6AlOR40
A6AlOR41
A6AlOR42
A6AlOR43
A6AlOR44

!lOO-1661
!lOO-1661
!lOO-1661
1698-7277
3757-0316

7
7
7
6
F

1
1
1
1
1

RESISTOR-TRMR 20K 5% WW
RESISTOR-TRMR 20K 5% WW
RESISTOR-TRMR 20K 5% Ww
RESISTOR 51.1K +-1% .05W
RESISTOR 42.2 +-1% .125W

32997
32997
32997
19701
19701

3057P-DM3-203
3057P-DM3-203
3057P-DM3-203
5023R
SFR25H

A6AlOR45
A6AlOR46
A6AlOR47
A6AlOR48
A6Al OR49

0698-7243
0698-7277
0698-7258
0698-7243
0698-7242

E
E
:
E
c

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K
51.1K
8.251:
1.96K
1.78K

19701
19701
19701
19701
19701

50635
5023R
50635
50635
50635

A6AlOR50
A6AlOR51
A6AlOR52
A6Al OR53
A6AlOR54

0698-7260
0698-7260
0757-1078
D698-7212
3757-0442

7
7
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1X .05W TF TC=O+-100
10K +-I% .05W TF TC=O+-100
1.47K +-1% .5W TF TC=O+-100
100 1% .05W F TC=O+-100
10K +-I% .125W TF TC=O+-100

19701
19701
19701
24546
19701

50635
50635
5053R
C3-l/8-TO-lOOR-F
SFR25H

A6AlOR56
A6AlOR57
A6AlOR58
A6AlOR59
A6AlOR60

3698-7246
3698-7238
3698-7260
3698-3454
1757-0416

9
9
7
3
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.61K +-1% .05W TF TC=O+-100
1.21K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100
215K 1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
SFR25H
SFR25H

A6AlOR61
A6AlOR62
A6AlOR63
A6AlOR64
A6AlOR65

1698-7243
1757-0346
1698-7212
1698-7243
1757-0346

6
2
9
6
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K +-1% .05W TF TC=O+-100
10 +-I% .125W TF TC=O+-100
100 1% .05W F TC=O+-100
1.96K +-1% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
91637
24546
19701
91637

50635
CMF-55-1, T-l
C3-l/8-TO-lOOR-F
50635
CMF-55-1, T-l

A6AlOR66
A6AlOR67
A6AlOR68
A6AlOR69
A6AlOR70

1757-0346
1757-0398
1757-0346
1698-7212
!lOO-1661

2
4
2
3
7

1
1
1
1
1

RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 75 +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 100 +-1% .05W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-ADJ 22-TRN

91637
19701
91637
19701
32997

CMF-55-1, T-l
SFR25H
CMF-55-1, T-l
50635
3057P-DM3-203

A6AlOR71
A6AlOR72
A6AlOR73
A6AlOR74
A6AlOR75

J698-3260
0757-0416
0698-7260
D698-7238
3698-7260

3
7
7
9
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
50635

+-I%
+-1%
+-1%
+-1%
+-1%

.05W
.05W
.05W
.05W
.05W

SIDE-ADJ 22-TRN
SIDE-ADJ 22-TRN
SIDE-ADJ 22-TRN
TF TC=O+-100
TF TC=O+-100
TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

464K 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
10K +-1% .05W TF TC=O+-100
1.21K +-1% .05W TF TC=O+-100
IOK +-1% .05W TF TC=O+-100

-

*Indicates factory-selected value

85660-60180 Parts List
Page 3 of 4

HP Part Number 85660-60180
A6AlO Miscellaneous Bias/Relay Driver
Reference
Designation

HP Part
Number

21
-

Description

Mfr
Code

Mfr Part
Number

A6AlOR76
A6AlOR77
A6AlOR78
A6AlOR79
A6AlOR80

2100-1661
0698-7277
0698-7260
0698-7260
0698-7277

7
6
7
7
6

1
1
1
1
1

RESISTOR-TRMR 20K 5% WW SIDE-ADJ 22-TRN
RESISTOR 51.1K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 51.1K +-1% .05W TF TC=O+-100

32997
19701
19701
19701
19701

3057P-DM3-203
5023R
50635
50635
5023R

A6AlOR81
A6AlOR82
A6AlOR83
A6AlOR84
AGAlOTPl

2100-3611
3698-3153
3698-7260
3698-7260
1251-0600

1
9
7
7
0

1
1
1
1
1

RESISTOR-TRMR 50K 10% C SIDE-ADJ 17-TRN
RESISTOR 3.831: 1% .125W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ SQ

32997
19701
19701
19701
27264

3292x-1-503
SFR25H
50635
50635
16-06-0034

A6AlOTP2
A6AlOTP3
A6AlOTP4
A6AlOTP5
A6AlOTP6

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A6AlOTP7
A6AlOTP8
AGAlOUl
A6AlOU2
A6AlOU3

1251-0600
1251-0600
1820-1538
1826-1058
1820-1542

0
0
2
3
8

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
IC GATE CMOS NAND QUAD 2-INP
IC OP AMP GP 8-TO-99 PKG
IC BFR CMOS INV HEX l-INP

27264
27264
3L585
06665
04713

16-06-0034
16-06-0034
CD401 1AF
OP-02CJ
MC14049UBCL

A6AlOU4
A6AlOU5
A6AlOU6
A6AlOU7
AGAlOVRl

1858-0047
1858-0047
1810-0206
1826-0161
1902-3323

5
5
8
7
1

1
1
1
1
1

TRANSISTOR ARRAY 16-PIN PLSTC DIP
TRANSISTOR ARRAY 16-PIN PLSTC DIP
NETWORK-RES 8-SIP lO.OK OHM X 7
IC OP AMP GP QUAD 14-DIP-P PKG
DIODE-ZNR 42.2V 5% DO-35 PD=.4W TC=+.08%

56289
56289
11236
27014
04713

ULN-2003A
ULN-2003A
750-81
LM324N

A6AlOVR2
A6AlOVR3
A6AlOVR4
A6AlOVR5
A6AlOVR6

1902-3301
1902-3301
1902-3301
1902-3301
1902-3203

1
1
1
1
1

DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR

04713
04713
04713
04713
04713

A6AlOVR7
A6AlOVR8
A6AlOVR9

1902-3345
1902-0025
1902-3234

1
1
1

DIODE-ZNR 51.1V 5% DO-35 PD=.4W
DIODE-ZNR 1OV 5% DO-35 PD=.4W TC=+.06%
DIODE-ZNR 19.6V 5% DO-35 PD=.4W

7
4
3

34.8V
34.8V
34.8V
34.8V
14.7V

5%
5%
5%
5%
5%

DO-35
DO-35
DO-35
DO-35
DO-35

PD=.4W
PD=.4W
PD=.4W
PD=.4W
PD=.4W

-

8X60-60180 Parts List
Page 4 of 4

*Indicates factory-selected value

04713
04713
04713

HP Part Number 85660-60322
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation
A6AlO

HP Part
Number

c
c

85660-60322

i

1

Mfr
Code

Description

at!
-

BOARD ASSEMBLY, MISCELLANEOUS
DRIVER (SERIAL PREFIX: 2747~)

BIAS/RELAY

Mfr Part
Number

28480

85660-60322

AGAlOCl
A6AlOC2
A6AlOC3
A6AlOC4
A6AlOC5

0160-2055
0180-2206
0180-2208
0180-0116
0160-2055

c
1
E
I
c

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 6OUF+-10% 6VDC TA
CAPACITOR-FXD 22OUF+-10% 1OVDC TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER

56289
56289
56289

805-504 Y5V 1032
150D606X9006B2-OYS
150D227X9010S2-DYS
150D685X9035B2-DYS
805-504 Y5V 1032

A6AlOC6
A6Al OC8
A6AlOC9
AGAlOClO
AGAlOCll

0160-4441
0180-0097
0160-4441
0180-0228
0180-0116

I
7
1
f
1

1
1
1
1
1

CAPACITOR-FXD .47UF +-lo% 50VDC CER
CAPACITOR-FXD 47UF+-10% 35VDC TA
CAPACITOR-FXD .47UF +-lo% 50VDC CER
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA

04222
56289
04222
56289
56289

SR305C474KAAH
150D476X9035S2-DYS
SR305C474KAAH
150D226X9015B2-DYS
150D685X9035B2-DYS

A6AlOC13
A6AlOC15
A6AlOC16
AGAlOCRl
A6AlOCR2

0180-0228
D180-0228
0160-4574
1901-1067
1901-1067

6
6
1
4
4

1
1
1
1
1

CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 1OOOPF +-IO% 1OOVDC CER
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35

56289
56289
04222
27014
27014

150D226X901582-DYS
150D226X901582-DYS
SAlOlC102KAAH
FDH444
FOH444

A6AlOCR3
A6AlOCR4
A6AlOCR5
A6Al OCR6
A6Al OCR7

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

AGAlOCRlO
A6AlOCR13
A6AlOCR14
A6AlOCR15
A6AlOCR18

1901-1067
1901-0535
1901-0535
1901-1067
1901-1067

4
9
9
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SCHOTTKY
DIODE-SCHOTTKY
DIODE-SWITCHING
DIODE-SWITCHING

125V 175MA 60NS DO-35
SM SIG
SM SIG
125V 175MA 60NS DO-35
125V 175MA 60NS DO-35

27014

FDH444

27014
27014

FDH444
FDH444

A6AlOCR19
A6AlOCR20
A6AlOCR21
A6AlOCR22
A6AlOCR23

1901-1067
1901-1067
1901-1067
1901-1067
L901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FOH444
FDH444
FDH444
FDH444

A6AlOCR24
A6AlOCR25
A6AlOCR26
A6AlOCR27
A6AlOCR28

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

AGAlOMPl
A6AlOMP2
A6AlOMP3
A6AlOMP4
A6AlOQl

1480-0073
1040-0748
1040-0749
1854-0477

6
3
4
7

2
1
1
1

NOT ASSIGNED
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU
EXTR-PC BD BLK POLYC .062-IN-BD-THKNS
EXTR-PC BD BRN POLYC .062-IN-BD-THKNS
TRANSISTOR NPN 2N2222A SI TO-18 PD=SOOMW

72962

99-012-062-0250

04713

2N2222A

A6AlOQ2
A6AlOQ3
A6AlOQ4
A6AlOQ5
A6AlOQ6

.853-0281
.854-0477
.853-0281
.854-0477
.855-0420

9
7
9
7
2

1
1
1
1
1

TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=SOOMW
TRANSISTOR J-FET 2N4391 N-CHAN D-MODE

04713
04713
04713
04713
17856

2N2907A
2N2222A
2N2907A
2N2222A
2N4391

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

-

*Indicates factory-selected value

8.5660-60322 Parts List
Page 1 of 4

HP Part Number 85660-60322
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation

HP Part
Number

A6AlOQ7
A6AlOQ8
A6AlOQ9
A6AlOQlO
A6AlOQll

1855-0420
1855-0420
1854-0477
1855-0420
1853-0213

A6AlOQ12
A6AlOQ13
A6AlOQ14
A6AlOQ15
A6AlOQ16

1854-0477
1853-0281
1854-0477
1854-0477
1854-0477

A6AlOQ17
A6AlOQ18
A6AlOQ19
A6AlOQ20
A6AlOQ21

1854-0477
1854-0477
1854-0477
1854-0477
1854-0472

AGAlORl
A6AlOR2
A6AlOR3
A6AlOR4
A6AlOR5

2100-2574
0698-7260
0698-7260
0698-7277
0698-7260

A6AlOR6
A6AlOR7
A6AlOR8
A6AlOR9
AGAlORlO

C
c

P

1

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

1
1
1
1
1

TRANSISTOR NPN 2N2222A
TRANSISTOR PNP 2N2907A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A

SI
SI
SI
SI
SI

TO-18
TO-18
TO-18
TO-18
TO-18

1
1
1
1
1

TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN SI OARL

SI TO-18
SI TO-18
SI TO-18
SI TO-18
PO=500MW

Mfr
Code

Description
J-FET 214391 N-CHAN O-MODE
J-FET 2N4391 N-CHAN O-MODE
NPN 2N2222A SI TO-18 PO=SOOMh
J-FET 2N4391 N-CHAN O-MODE
PNP 2N4236 SI TO-5 PO=lW

Mfr Part
Number

17856
17856
04713
17856
04713

2N4391
2N4391
2N2222A
2N4391
2N4236

PO=SOOMh
PO=400Mb
PO=SOOMh
PO=500Mlr
PO=500MG(

04713
04713
04713
04713
04713

2N2222A
2N2907A
2N2222A
2N2222A
2N2222A

PO=500Mk
PO=SOOMW
PO=500MW
PO=SOOMW

04713
04713
04713
04713
04713

2N2222A
2N2222A
2N2222A
2N2222A
MPS-A14

7

1
1
1
1
1

RESISTOR-TRMR 500 10% TKF SIDE-AOJ l-TRN
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 51.1K +-1% .05W TF TC=O+-100
7ESISTOR 1OK +-I% .05W TF TC=O+-100

73138
19701
19701
19701
19701

82PAR500
50635
50635
5023R
50635

D757-0346
D698-7243
3698-7266
2100-0545
3698-7281

2
6
3
4
2

1
1
1
1
1

7ESISTOR 10 +-1% .125W TF TC=O+-100
?ESISTOR 1.96K +-1% .05W TF TC=O+-100
iESISTOR 17.8K +-1% .05W TF TC=O+-100
IESISTOR-TRMR 1K 10% TKF SIDE-AOJ 17-TRN
7ESISTOR 75K +-2% .05W TF TC=O+-100

91637
19701
19701
73138
19701

CMF-55-l. T-l
50635
50635
67XR
5023R

AGAlORll
A6AlOR12
A6AlOR13
A6AlOR14
A6AlOR15

3699-0127
!lOO-0545
3698-7281
1699-0127
!lOO-0545

3
4
2
3
4

1
1
1
1
1

7ESISTOR 464K +-1% .05W TF TC=O+-100
7ESISTOR-TRMR 1K 10% TKF SIDE-AOJ 17-TRN
IESISTOR 75K +-2% .05W TF TC=O+-100
2ESISTOR 464K +-1% .05W TF TC=O+-100
?ESISTOR-TRMR 1K 10% TKF SIDE-AOJ 17-TRN

11502
73138
19701
11502
73138

RG-l/8-TO50
67XR
5023R
RG-l/8-TO50
67XR

A6AlOR16
A6AlOR17
A6AlOR18
A6AlOR19
A6AlOR20

3698-7281
1699-0127
!lOO-0545
1698-7281
1699-0127

2
3
4
2
3

1
1
1
1
1

IESISTOR 75K +-2% .05W TF TC=O+-100
{ESISTOR 464K +-1% .05W TF TC=O+-100
{ESISTOR-TRMR 1K 10% TKF SIDE-AOJ 17-TRN
tESISTOR 75K +-2% .05W TF TC=O+-100
{ESISTOR 464K +-1% .05W TF TC=O+-100

19701
11502
73138
19701
11502

5023R
RG-l/8-TO50
67XR
5023R
RG-l/8-TO50

A6AlOR21
A6AlOR22
A6AlOR23
A6AlOR24
A6AlOR25

!lOO-0670
1698-7260
!lOO-0670
1698-7260
!lOO-0670

6
7
6
7
6

1
1
1
1
1

(ESISTOR-TRMR 10K
lESISTOR 10K +-1%
IESISTOR-TRMR 10K
[ESISTOR 10K +-1X
IESISTOR-TRMR 1OK

10%
.05W
10%
.05W
10%

TKF SIDE-AOJ 17-TR
TF TC=O+-100
TKF SIDE-AOJ 17-TR
TF TC=O+-100
TKF SIDE-AOJ 17-TR

73138
19701
73138
19701
73138

67XR
50635
67XR
50635
67XR

A6AlOR26
A6AlOR27
A6AlOR28
A6AlOR29
A6AlOR30

1698-7260
!lOO-0670
1698-7260
!lOO-0670
)698-7260

7
6
7
6
7

1
1
1
1
1

iESISTOR 10K +-1%
IESISTOR-TRMR 10K
LESISTOR 10K +-1%
IESISTOR-TRMR 10K
!ESISTOR 10K +-1%

.05W
10%
.05W
10%
.05W

TF TC=O+-100
TKF SIDE-AOJ 17-TR
TF TC=O+-100
TKF SIDE-AOJ 17-TR
TF TC=O+-100

19701
73138
19701
73138
19701

50635
67XR
50635
67XR
50635

A6AlOR31
A6AlOR32
A6AlOR33

!lOO-1661
1757-0416
d698-3260

7
7
9

1
1
1

!ESISTOR-TRMR 20K 5% WW SIOE-AOJ 22-TRN
!ESISTOR 511 +-1% .125W TF TC=O+-100
dESISTOR 464K 1% .125W TF TC=O+-100

32997
19701
19701

3057P-OM3-203
SFR25H
SFR25H

i
c
i
i
i
i
i
7
7
i

2
7
7
6

-

8566060322 Parts List
Page2of4

*Indicates factory-selected value

HP Part Number 85660-60322
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation I

HP Part
Number

c
c X!

Description

-

Mfr
Code

Mfr Part
Number

A6AlOR34
A6AlOR35

!lOO-1661
1757-0416

1
1

RESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN
RESISTOR 511 +-1X .125W TF TC=O+-100

32997
19701

3057P-OM3-203
SFR25H

A6AlOR36
A6AlOR37
A6AlOR38
A6AlOR39
A6AlOR40

1698-3260
!lOO-1661
1757-0416
1698-3260
!lOO-1661

1
1
1
1
1

RESISTOR 464K 1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN
RESISTOR 511 +-I% .125W TF TC=O+-100
RESISTOR 464K 1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN

19701
32997
19701
19701
32997

SFR25H
3057P-OM3-203
SFR25H
SFR25H
3057P-OM3-203

A6AlOR41
A6AlOR42
A6AlOR43
A6AlOR44
A6AlOR45

!lOO-1661
!lOO-1661
1698-7277
1757-0316
1698-7243

1
1
1
1
1

RESISTOR-TRMR 20K 5% Ww SIDE-AOJ 22-TRN
RESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN
RESISTOR 51.1K +-I% .05W TF TC=O+-100
RESISTOR 42.2 +-1% .125W TF TC=O+-100
RESISTOR 1.96K +-1% .05W TF TC=O+-100

32997
32997
19701
19701
19701

3057P-OM3-203
3057P-OM3-203
5023R
SFR25H
50635

A6AlOR46
A6AlOR47
A6AlOR48
A6AlOR49
A6AlOR50

1698-7277
1698-7258
1698-7243
1698-7242
1698-7260

E
3
6
c
;

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

51.1K +-1% .05W TF TC=O+-100
8.25K +-1% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
1.78K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

502317
50635
50635
50635
50635

A6AlOR51
A6AlOR52
A6AlOR54
A6AlOR56
A6AlOR57

1698-7260
)757-1078
1757-0442
1698-7246
1698-7238

7
9
9
9
9

1
1
1
1
1

?ESISTOR
?ESISTOR
?ESISTOR
?ESISTOR
?ESISTOR

10K +-1% .05W TF TC=O+-100
1.47K +-1% .5W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
2.61K +-I% .05W TF TC=O+-100
1.21K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
5053R
SFR25H
50635
50635

A6AlOR58
A6AlOR59
A6AlOR60
A6AlOR61
A6AlOR62

1698-7260
1698-3454
1757-0416
1698-7243
1757-0346

7
3
7
6
2

1
1
1
1
1

?ESISTOR
7ESISTOR
1ESISTOR
iESISTOR
7ESISTOR

10K +-I% .05W TF TC=O+-100
215K 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
91637

50635
SFR25H
SFR25H
50635
CMF-55-1, T-l

A6AlOR64
A6AlOR65
A6AlOR66
A6AlOR67
A6AlOR68

1698-7243
1757-0346
1757-0346
1757-0398
1757-0346

6
2
2
4
2

1
1
1
1
1

?ESISTOR
7ESISTOR
1ESISTOR
1ESISTOR
IESISTOR

1.96K +-1% .05W TF TC=O+-100
10 +-1X .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
75 +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
91637
91637
19701
91637

50635
CMF-55-1, T-l
CMF-55-1. T-l
SFR25H
CMF-55-1, T-l

A6AlOR69
A6AlOR70
A6AlOR71
A6AlOR72
A6AlOR73

1698-7212
100-1661
1698-3260
1757-0416
1698-7260

9
7
9
7
7

1
1
1
1
1

?ESISTOR 100 +-1% .05W TF TC=O+-100
IESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN
IESISTOR 464K 1% .125W TF TC=O+-100
{ESISTOR 511 +-1% .125W TF TC=O+-100
{ESISTOR 10K +-1% .05W TF TC=O+-100

19701
32997
19701
19701
19701

50635
3057P-OM3-203
SFR25H
SFR25H
50635

A6AlOR74
A6AlOR75
A6AlOR76
A6AlOR77
A6AlOR78

1698-7238
1698-7260
100-1661
698-7277
698-7260

9
7
7
6
7

1
1
1
1
1

ZESISTOR 1.21K +-1% .05W TF TC=O+-100
tESISTOR 10K +-1% .05W TF TC=O+-100
ZESISTOR-TRMR 20K 5% WW SIDE-AOJ 22-TRN
tESISTOR 51.1K +-1% .05W TF TC=O+-100
{ESISTOR 10K +-1% .05W TF TC=O+-100

19701
19701
32997
19701
19701

50635
50635
3057P-OM3-203
5023R
50635

A6AlOR79
A6AlOR80
A6AlOR81
A6AlOR82
A6Al OR83

698-7260
698-7277
100-0670
698-3153
698-7260

7
6
6
9
7

1
1
1
1
1

(ESISTOR 10K +-1% .05W TF TC=O+-100
tESISTOR 51.1K +-1% .05W TF TC=O+-100
IESISTOR-TRMR 10K 10% TKF SIDE-AOJ 17-TR
lESISTOR 3.83K 1% .125W TF TC=O+-100
CESISTOR 10K +-1% .05W TF TC=O+-100

19701
19701
73138
19701
19701

50635
5023R
67XR
SFR25H
50635

-

*Indicates factory-selected value

85660-60322 Parts List
Page 3 of 4

HP Part Number 85660-60322
A6AlO Miscellaneous Bias/Relay Driver

Reference
Designation

HP Part
Number

Mfr
Code

Description

%I
-

Mfr Part
Number

A6AlOR84
A6AlOR85
A6AlOR86*
A6AlOR87*
A6AlOR88*

0698-7260
0698-7260
0698-7265
D698-7266
0698-7258

7
7
2
3
3

1
1
1
1
1

RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 16.2K +-1X .05W TF TC=O+-100
RESISTOR 17.8K +-1% .05W TF TC=O+-100
RESISTOR 8.25K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A6AlOR89*
A6AlOR90"
A6AlOR91”
A6AlOR92
AGAlOTPl

D698-7246
3698-7188
3698-7266
3698-7236
1251-0600

9
a
3
7
0

1
1
1
1
1

RESISTOR 2.61K +-1X .05W TF TC=O+-100
RESISTOR 10 +-I% .05W TF TC=O+-100
RESISTOR 17.8K +-1% .05W TF TC=O+-100
RESISTOR 1K +-1% .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
19701
19701
27264

50635
50635
50635
50635
16-06-0034

A6AlOTP2
A6AlOTP3
A6AlOTP4
A6AlOTP5
A6AlOTP6

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A6AlOTP7
A6AlOTP8
AGAlOUl
A6AlOU2
A6AlOU3

1251-0600
1251-0600
1820-2922
L826-1058
1820-1542

0
0
0
3
8

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC GATE CMOS/74HC NAND QUAD 2-INP
IC OP AMP GP 8-TO-99 PKG
IC BFR CMOS INV HEX l-INP

SQ
SQ

27264
27264
04713
06665
04713

16-06-0034
16-06-0034
MC74HCOON
OP-OECJ
MC14049UBCL

A6AlOU4
A6AlOU5
A6AlOU6
A6AlOU7
AGAlOVRl

1858-0047
1858-0047
1810-0206
1826-0161
1902-3323

5
5
a
7
1

1
1
1
1
1

TRANSISTOR ARRAY 16-PIN PLSTC DIP
TRANSISTOR ARRAY 16-PIN PLSTC DIP
NETWORK-RES 8-SIP lO.OK OHM X 7
IC OP AMP GP QUAD 14-DIP-P PKG
DIODE-ZNR 42.2V 5% DO-35 PO=.4W TC=+.08%

56289
56289
11236
27014
04713

ULN-2003A
ULN-2003A
750-81
LM324N

A6AlOVR2
A6AlOVR3
A6AlOVR4
A6AlOVR5
A6AlOVR6

1902-3301
1902-3301
.902-3301
.902-3301
.902-3203

1
1
1
1
1

DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR

04713
04713
04713
04713
04713

A6AlOVR7
A6AlOVR8
A6AlOVR9

.902-3345
.902-0025
.902-3234

1
1
1

DIODE-ZNR 51.1V 5% DO-35 PO=.4W
DIODE-ZNR 1OV 5% DO-35 PO=.4W TC=+.06%
DIODE-ZNR 19.6V 5% DO-35 PO=.4W

CONT
CONT
CONT
CONT
CONT

34.8V
34.8V
34.8V
34.8V
14.7V

5%
5%
5%
5%
5%

PIN
PIN
PIN
PIN
PIN

DO-35
DO-35
DO-35
DO-35
DO-35

PO=.4W
PO=.4W
PO=.4W
PO=.4W
PO=.4W

-

8566060322 Parts List
Page 4 of 4

*Indicates factoy-selected value

04713
04713
04713

2’3

Pl

22
4 4

A6AlO Miscellaneous Bias/Relay Driver Component Locations, 85660-60180

R41
LB2
R42
LB3
,

Rl
IO

~ “, ,~ u5 , M ; u ggq [l/ppF
E

--r-

n

,,,,,~,,,:,,,~I),I.llli.i’::r
2’3

Pl

22
4 4

A6AlO Miscellaneous Bias/Relay Driver Component Locations, 85660-60322

R70
L B 4

A6All
A6All Slope Generator, Circuit Description
The slope generator takes a voltage which is proportional to YTX frequency and produces a
current to control the slope attenuator in the A6A3 Last Converter, which compensates for
conversion loss variations of the input mixer within each frequency band. The slope generator
also has circuitry which decodes bandswitch and attenuator settings, produces pulses for
the sample and hold, and hysteresis circuits in the A6A12 YTX Driver, produces the YTX
peaking signal for the YTX Driver, and a signal to switch in the filter capacitor on the A6A7
YTX Current Driver.

Bandswitch and Attenuator Decode @
U9 is a hex latch which receives six lines from the 50-wire Instrument Bus and a strobe,
LCK2, which goes low when the six lines have valid A6 RF Module information. Three of
the latch outputs have attenuator setting information and go to the A6AlO Miscellaneous
Bias/Relay Driver. The other three lines have bandswitch information which is decoded by
U3A and U3B.
U3B decodes the low band (Band A, 0 to 2.5 GHz) and the external mixer band (Band F).
When pin 2 of U9 is high and pin 12 is low, Band A is selected. The output of U3B is high,
turning Q22 on, bringing the collector of Q22 low. This turns Q19 off, bringing the collector
of Q19 (LO BAND) high. This information goes to the A6AlO Miscellaneous Bias/Relay
Driver to control the A6Al RF input switch. Q20 inverts the signal and drives amplifier A4A,
producing a signal which is approximately +17 V when Band A is valid and approximately
-8 V otherwise. This signal is used throughout the A6All Slope Generator. When pins 2 and
12 of U9 are both high, Band F is active. The output of U3B is low, turning Q22 off, and
bringing the collector of Q22 (and Band F line) high. At the same time,me, Q19 turns on,
bringing the LO BAND line low.
U3A decoder is enabled when pin 2 of U9 is low. Pins 5 and 12 of U9 have coded information
giving harmonic numbers as shown in Table 1.
Table 1. Bandswitch Decoding
Band B2 (pin 12) Bl (pin 5)

N

B

0

1

1

C

1

0

2

D

1

1

3

E

0

0

4

A6A11

1

This information is decoded by U3A and amplified by U5. The outputs of U5 are
approximatley +3 V when a band is valid and approximatley -22 V otherwise. These signals
are used to drive FET switches on the A6All Slope Generator and the A6A12 YTX Driver.

Preselector Peak @J
A second latch, UlO, receives the same six lines a U9, but receives a different strobe, LCK5.
This strobe is valid when the six lines have preselector peaking information. The outputs
of this latch drive eight bits of a DAC which produces 0 to 10 V at the output of U4B
corresponding to DAC values of 0.00 to 63.75. This voltage goes to the A6A12 YTX Driver.
This circuit is used to adjust the tacking of the YTX when [PRESELECTOR PEAK) or (SHIFT)
a), (K) (+dBm), or (SHIFT) Ide] is keyed in.

Hysteresis, Sample-Hold Control, and Filter Capacitor @
U8 is a Quad D-Latch which is used to decode information relating to Hysteresis, Sample and
Hold, and Filter Capacitor information. Four lines from the 50-wire Instrument Bus go to the
inuts of the latch. The latch is strobed when these lines have valid RF Module information.
The instrument controller is able to connect the filter capacitor across the YTX, and control
the Hysteresis and Sample and Hold circuits on the YTX Driver.

Slope Offset @
U7 receives the -0.525 V/GHz signal from the A6A12 YTX Driver, amplifies and offsets it
such that a t1.83 V/GH z ramp centered about 6 V is produced at TP8. Qll to Q15 and
associated circuitry produce the offset for each band, and R2 varies the A-Band offset to
position the A-Band slope breakpoints.

Slope Breakpoint Generator @
The signal at TP8 has a maximum range on Band C (5.8 to 12.5 GHz, second harmonic)
of approximately 0 to 12 V. This signal is applied to two voltage dividers R36/R37 and
R38/R39, which drive the positive inputs to U6A and U6B respectively. The voltage at the
inputs to these op amps is clamped by CR5 and CR6 such that U6A sees only the first half
of the full band ramp and U6B sees only the second half. In this manner, each full band
is divided into two segments with one breakpoint in the center. Both U6A and U6B are
configured for a gain of 2 and an offset of approximately -6.2 V, for a 0 V output at midband
and unity gain overall.

Upper Segment Generator @ and Lower Segment Generator @
The outputs of U6 drive variable gain amplifiers as shown in Figure 1.

2 A6All

Figure 1. Variable Gain Amplifier, Simplified Schematic
When the 20 K potentiometer is set to zero, the amplifier has a gain of +1/2; when set to
20 K, the gain is -l/2; and when set to 10 K, the gain is zero. FETs Ql to QlO switch in
different 20 K potentiometers for the five bands. The outputs for the two segments at U2 are
summed together in Ul. A waveform similar to Figure 2 is present at the output of U2B if
a full band is swept (for example, 5.8 to 12.5 GHz), and the oscilloscope horizontal input is
connected to the sweep output of the analyzer. Similarly, the output of U2A will appear as
shown in Figure 3.

Slope Output @I
Both waveforms (Figure 2 and Figure 3) are summed together at Ul to form a current source
with Q16 to drive the slope attenuator in the A6A3 Last Converter. The average output
current is set by slope gain adjustment R84.
The slope attenuator in the A6A3 Last Converter varies the gain of the 21.4 MHz IF with the
collector current of Ql6 providing gain correction that varies with frequency. Within each
band, there is independent control over two halves of the band, and IF gain that increases or
decreases with increasing frequency.
When Band F (external mixer) is selected, QlS and Q21 provide additional gain to make up
for the conversion loss of the external mixer.

A6All

3

20K
+3v __

()v--

1 OK
-----------;,
A

-3v

-

’

‘Obn

A

BULL BANEND

STbRT

Figure 2. U2B Output Waveform

10K
-_-_--------

START

Figure 3. U2A Output Waveform

4 A6All

HP Part Number 85660-60126
A6All Slope Generator
Reference
Designation

HP Part
Number

Mfr
Code

Description

JtY
-

Mfr Part
Number

A6All

85660-60126

9

1

BOARD ASSEMBLY, SLOPE GENERATOR
(SERIAL PREFIXES: 2410~ - 2611~)

28480

85660-60126

AGAllCl
A6A1 lC2
A6AllC3
A6AllC4
A6AllC5

0180-0291
0160-3877
0180-0229
0180-0116
0180-1746

3
5
7
1
5

1
1
1
1
1

CAPACITOR-FXD lUF+-10% 35VDC TA
CAPACITOR-FXD 1OOPF +-20X ZOOVDC CER
CAP-FXD 33uF 10 V TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 15UF+-10% LOVDC TA

56289
04222
56289
56289
56289

150D105X9035A2-DYS
SR202ClOlMAAH
150D336X901082-DYS
150D685X903582-DYS
150D156X902082-DYS

A6AllC6
AGAllCRl
A6AllCR2
A6AllCR3
A6Al lCR4

0180-0116
1901-1067
1901-1067
1901-1067
1901-1067

1
4
4
4
4

1
1
1
1
1

CAPACITOR-FXD 6.8UF+-10% 35VDC TA
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35

56289
27014
27014
27014
27014

1500685X903582-DYS
FDH444
FDH444
FDH444
FDH444

A6AllCR5
A6AllCR6
A6AllCR7
A6AllCR8
A6AllCR9

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

AGAllCRlO
AGAllCRll
A6AllCRlZ
A6AllCR13
A6AllCR14

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

A6AllCR15
A6AllCR16
A6AllCR17
A6AllMPZ
A6AllMP3

1901-1067
1901-1067
1901-0518
1480-0073
1040-0749

4
4
8
6
4

1
1
1
2
2

DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SCHOTTKY SM SIG
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU
EXTR PC 8D 8RN

27014
27014
72962
28480

FDH444
FDH444
5082-2800
99-012-062-0250
4040-0749

A6AllQl
A6AllQ2
A6Al lQ3
A6Al lQ4
A6AllQ5

1855-0414
1855-0414
1855-0414
1855-0414
1855-0414

4
4
4
4
4

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET
J-FET
J-FET
J-FET
J-FET

2N4393
2N4393
2N4393
2N4393
2N4393

N-CHAN
N-CHAN
N-CHAN
N-CHAN
N-CHAN

D-MODE
D-MODE
D-MODE
D-MODE
D-MODE

TO
TO
TO
TO
TO

17856
17856
17856
17856
17856

2N4393
2N4393
2N4393
2N4393
2N4393

A6AllQ6
A6AllQ7
A6AllQ8
A6AllQ9
A6AllQlO

1855-0414
1855-0414
1855-0414
1855-0414
1855-0414

4
4
4
4
4

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET
J-FET
J-FET
J-FET
J-FET

2N4393
214393
2N4393
2N4393
2N4393

N-CHAN
N-CHAN
N-CHAN
N-CHAN
N-CHAN

D-MODE
D-MODE
D-MODE
D-MODE
D-MODE

TO
TO
TO
TO
TO

17856
17856
17856
17856
17856

2N4393
2N4393
2N4393
2N4393
2N4393

A6AllQll
A6AllQ12
A6AllQ13
A6AllQ14
A6AllQ15

1854-0477
1854-0477
1854-0477
1854-0477
1854-0477

7
7
7
7
7

1
1
1
1
1

TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A

SI
SI
SI
SI
SI

TO-18
TO-18
TO-18
TO-18
TO-18

PD=500MW
PD=500MW
PD=500MW
PD=SOOMW
PD=SOOMW

04713
04713
04713
04713
04713

2N2222A
2N2222A
2N2222A
2N2222A
2N2222A

A6AllQl6
A6AllQ17
A6AllQl8
A6AllQ19
A6AllQ20

1854-0637
1853-0281
1853-0281
1854-0477
1854-0477

1
9
9
7
7

1
1
1
1
1

TRANSISTOR NPN 2N2219A
TRANSISTOR PNP 2N2907A
TRANSISTOR PNP 2N2907A
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A

SI
SI
SI
SI
SI

TO-5 PD=800MW
TO-18 PD=400MW
TO-18 PD=400MW
TO-18 PD=500MW
TO-18 PD=500MW

04713
04713
04713
04713
04713

2N2219A
2N2907A
2N2907A
2N2222A
2N2222A

-

*Indicates factory-selected value

85660-60126 Parts List
Page 1 of 4

HP Part Number 85660-60126
A6A11 Slope Generator
Reference
Designation

HP Part
Number

m
-

Description

Mfr
Code

Mfr Part
Number

A6AllQ21
A6AllQ22
A6AllQ23
A6AllQ24
AGAllRl

1854-0477
1854-0477
1853-0281
1853-0281
0757-0440

7
7
9
9
7

1
1
1
1
1

TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
RESISTOR 7.5K +-1% .125W TF TC=O+-100

04713
04713
04713
04713
19701

2N2222A
2N2222A
2N2907A
2N2907A
SFR25H

A6AllR2"
A6AllR3
A6AllR4
A6AllR5
A6AllR6

0698-3453
0757-0465
0698-3260
0757-0465
0757-0199

2
6
9
6
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196K 1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
464K 1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
21.5K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR7
A6AllR8
A6AllR9
AGAllRlO
AGAllRll

0757-0465
0757-0290
0757-0465
0698-3150
0757-0465

6
5
6
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

IOOK +-1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
1OOK +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR12
A6AllR13
A6AllR14
A6AllR15
A6AllR16

0757-0442
0757-0123
0698-0084
0757-0280
0757-1094

9
3
9
3
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR17
A6AllR18
A6AllR19
A6AllR20
A6AllR21

0757-0280
0757-0416
0757-0416
0757-0416
0757-0465

3
7
7
7
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR22
A6AllR23
A6AllR36
A6AllR37
A6Al lR38

0757-0465
0698-3260
0757-0465
0757-0465
0757-0465

6
3
6
6
6

1
1
1
1
1

RESISTOR IOOK
RESISTOR 464K
RESISTOR 1OOK
RESISTOR 1OOK
RESISTOR 1OOK

+-1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR39
A6AllR40
A6AllR41
A6AllR42
A6Al lR43

0757-0465
0757-0442
0757-0442
0757-0442
0757-0442

6
3
3
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
PESISTOR
?ESISTOR

1OOK +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR44
A6AllR45
A6AllR46
A6AllR47
A6AllR48

0698-0085
D757-0442
3757-0442
3757-0442
2100-3353

3
3
3
3
3

1
1
1
1
1

7ESISTOR 2.61K 1%
?ESISTOR 10K +-1%
?ESISTOR 10K +-1X
?ESISTOR 10K +-1%
IESISTOR-TRMR 20K

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
SIDE-ADJ l-TRN

19701
19701
19701
19701
32997

SFR25H
SFR25H
SFR25H
SFR25H
3386X-Y46-203

A6AllR49
A6AllR50
A6AllR51
A6AllR52
A6AllR53

3683-3955
3757-0465
2100-3353
3683-3955
3757-0465

3
5
3
3
5

1
1
1
1
1

iESISTOR 3.9M
?ESISTOR 1OOK
IESISTOR-TRMR
?ESISTOR 3.9M
7ESISTOR 1OOK

5% .25W CC TC=-900/+1100
+-1% .125W TF TC=O+-100
20K 10% TKF SIDE-ADJ l-TRN
5% .25W CC TC=-900/+1100
+-1% .125W TF TC=O+-100

01121
19701
32997
01121
19701

C83955
SFR25H
3386X-Y46-203
C83955
SFR25H

A6AllR54
A6AllR55
A6AllR56

2100-3353
1683-3955
1757-0465

3
3
5

1
1
1

IESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
?ESISTOR 3.9M 5% .25W CC TC=-900/+1100
1ESISTOR 1OOK +-1% .125W TF TC=O+-100

32997
01121
19701

3386X-146-203
C83955
SFR25H

.125W TF
.125W TF
.125W TF
.125W TF
10% TKF

-

85660-60126 Parts List
Page 2 of 4

*Indicates factoy-selected value

HP Part Number 85660-60126
A6All Slope Generator
Reference
Designation

HP Part
Number

3Y
-

Description

Mfr
Code

Mfr Part
Number

A6Al lR57
A6AllR58

2100-3353
0683-3955

8
8

1
1

RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100

32997
01121

3386X-146-203
CB3955

A6AllR59
A6AllR60
A6AllR61
A6AllR62
A6AllR63

0757-0465
2100-3353
0683-3955
0757-0465
0757-0442

6
8
8
6
9

1
1
1
1
1

RESISTOR 1OOK +-1X .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
32997
01121
19701
19701

SFR25H
3386X-Y46-203
CB3955
SFR25H
SFR25H

A6AllR64
A6AllR65
A6AllR66
A6AllR67
A6AllR68

0757-0442
0757-0442
2100-3353
0683-3955
0757-0465

9
9
8
8
6

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100

19701
19701
32997
01121
19701

SFR25H
SFR25H
3386X-Y46-203
CB3955
SFR25H

A6AllR69
A6AllR70
A6AllR71
A6AllR72
A6AllR73

2100-3353
0683-3955
0757-0465
2100-3353
0683-3955

8
8
6
8
8

1
1
1
1
1

RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100

32997
01121
19701
32997
01121

3386X-Y46-203
CB3955
SFR25H
3386X-Y46-203
C83955

A6AllR74
A6AllR75
A6AllR76
A6AllR77
A6AllR78

0757-0465
2100-3353
0683-3955
0757-0465
2100-3353

6
8
8
6
8

1
1
1
1
1

RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN

19701
32997
01121
19701
32997

SFR25H
3386X-Y46-203
C83955
SFR25H
3386X-Y46-203

A6AllR79
A6AllR80
A6AllR81
A6AllR82
A6AllR83

0683-3955
0757-0465
0698-3136
0698-3136
0698-3159

8
6
8
8
5

1
1
1
1
1

RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1X .125W TF TC=O+-100
RESISTOR 17.8K 1% .125W TF TC=O+-100
RESISTOR 17.8K 1% .125W TF TC=O+-100
RESISTOR 26.1K 1% .125W TF TC=O+-100

01121
19701
19701
19701
19701

C83955
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR84
A6Al lR85
A6Al lR86
A6AllR88
A6AllR89

2100-3273
0698-3156
1757-0280
1698-3156
1757-0442

1
2
3
2
9

1
1
1
1
1

RESISTOR-TRMR 2K 10% TKF SIDE-ADJ l-TRN
RESISTOR 14.7K 1% .125W TF TC=O+-100
tESISTOR 1K +-1% .125W TF TC=O+-100
ZESISTOR 14.7K 1% .125W TF TC=O+-100
tESISTOR 10K +-1% .125W TF TC=O+-100

32997
19701
19701
19701
19701

3386X-Y46-202
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR90
A6AllR91
A6AllR92
A6AllR93
A6AllR94

1757-0438
1757-0416
1757-0290
1757-0280
1757-0280

3
7
5
3
3

1
1
1
1
1

tESISTOR
{ESISTOR
1ESISTOR
tESISTOR
{ESISTOR

5.11K +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR95
A6AllR96
A6AllR97
A6AllR98
A6AllR99

3757-0280
1757-0280
3757-0465
3698-3157
1698-3157

3
3
6
3
3

1
1
1
1
1

IESISTOR
{ESISTOR
IESISTOR
{ESISTOR
?ESISTOR

1K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1OOK 1% .125W F TC=O+-100
19.6K 1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100

19701
19701
24546
19701
19701

SFR25H
SFR25H
C4-l/8-TO-1003-F
SFR25H
SFR25H

A6AllRlOO
AGAllRlOl
A6AllR102
A6AllR103
A6AllR104

1698-3157
3698-3157
1757-0442
3757-0463
1757-0438

3
3
9
4
3

1
1
1
1
1

1ESISTOR
?ESISTOR
1ESISTOR
IESISTDR
1ESISTOR

19.6K 1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100
10K 1% .125W F TC=O+-100
82.5K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
24546
19701
19701

SFR25H
SFR25H
C4-l/8-TO-1002-F
SFR25H
SFR25H

-

*Indicates factory-selected value

85660-60126 Parts List
Page 3 of 4

HP Part Number 85660-60126
A6All Slope Generator
Reference
Designation

HP Part
Number

A6AllR105
A6AllR106
A6AllR107
A6AllR108
A6AllR109

0757-0438
0757-0200
0757-0346
0757-0346
0757-0346

AGAllRllO
AGAllRlll
A6AllR113
A6AllR114
A6AllR115

0757-0346
0757-0465
0757-0280
3757-0442
3757-0442

A6AllR116
A6AllR117
A6AllR118
A6AllR119
A6AllR120

c
c

Qt!
1

Mfr
Code

Description

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-1% .125W
5.62K +-1% .125W
10 +-1% .125W TF
10 +-1% .125W TF
10 +-I% .125W TF

TF TC=O+-100
TF TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

2
E
3
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3757-0442
1757-0442
3757-0442
3757-0442
1757-0442

9
9
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

AGAllTPl
A6AllTP2
A6Al lTP3
A6Al lTP4
A6AllTP5

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

A6AllTP6
A6AllTP7
A6AllTP8
AGAllUl
A6AllU2

1251-0600
1251-0600
1251-0600
1826-1058
5081-8117

c
C
C
3
3

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC OP AMP GP 8-TO-99 PKG
SCREEN 1826-0092

A6AllU3
A6AllU4
A6AllU5
A6AllU6
A6AllU7

1820-1281
5081-8117
1826-0161
5081-8117
1826-1058

2
3
7
3
3

1
1
1
1
1

IC DCDR TTL LS 2-TO-4-LINE DUAL
SCREEN 1826-0092
IC OP AMP GP QUAD 14-DIP-P PKG
SCREEN 1826-0092
IC OP AMP GP 8-TO-99 PKG

A6AllU8
A6AllU9
A6AllUlO
AGAllUll
AGAllVRl

1820-1195
1820-1196
1820-1196
1826-0188
1902-0625

7
8
8
8
0

1
1
1
1
1

IC FF TTL
IC FF TTL
IC FF TTL
D/A 8-BIT
DIODE-ZNR

A6AllVR2
A6AllVR3
A6AllVR4

1902-0041
1902-3203
1902-0025

4
6
4

1
1
1

DIODE-ZNR 5.11V 5% DO-35 PD=.4W
DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR IOV 5% DO-35 PD=.4W TC=+.06%

19701
19701
91637
91637
91637

SFR25H
SFR25H
CMF-55-1, T-l
CMF-55-1. T-l
CMF-55-1, T-l

10 +-1% .125W TF TC=O+-100
1OOK +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100

91637
19701
19701
19701
19701

CMF-55-1, T-l
SFR25H
SFR25H
SFR25H
SFR25H

IOK
10K
10K
IOK
10K

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

SQ
SQ
SQ

27264
27264
27264
06665
28480

16-06-0034
16-06-0034
16-06-0034
OP-02CJ
5081-8117

01295
28480
27014
28480
06665

SN74LS139AN
5081-8117
LM324N
5081-8117
OP-02CJ

01295
01295
01295
04713
04713

SN74LS175N
SN74LS174N
SN74LS174N
MC1408L-8
lN829

+-1X
+-1%
+-1X
+-1%
+-1%

.125W
.125W
.125W
.125W
.125W

CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

LS D-TYPE POS-EDGE-TRIG COM
LS D-TYPE POS-EDGE-TRIG COM
LS D-TYPE POS-EDGE-TRIG COM
16-CERDIP BPLR
lN829 6.2V 5% DO-35 PD=.25W

-

85660-60126 Parts List
Page 4 of 4

Mfr Part
Number

*Indicates factoy-selected value

CL
CL
CL
TC

04713
04713
04713

HP Part Number 85660-60238
A6All Slope Generator
Reference
Designation

HPPart
Number

C
D @’

Mfr
Code

Description

Mfr Part
Number

A6All

85660-60238

4

1

BOARD ASSEMBLY, SLOPE GENERATOR
(SERIAL PREFIX: 2613~)

28480

85660-60238

AGAllCl
A6AllC2
A6Al lC3
A6AllC4
A6AllC5

0180-0291
0160-3877
0180-0229
0180-0116
0180-1746

3
5
7
1
5

1
1
1
1
1

CAPACITOR-FXD lUF+-10% 35VDC TA
CAPACITOR-FXD 1OOPF +-20X EOOVDC CER
CAP-FXD 33uF 10 V TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 15UF+-10% 20VDC TA

56289
04222
56289
56289
56289

1500105X9035A2-DYS
SR202ClOlMAAH
15OD336X901082-DYS
150D685X903582-DYS
150D156X9020B2-DYS

A6AllC6
AGAllCRl
A6AllCR2
A6Al lCR3
A6AllCR4

0180-0116
1901-1067
1901-1067
1901-1067
1901-1067

1
4
4
4
4

1
1
1
1
1

CAPACITOR-FXD 6.8UF+-10% 35VDC TA
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35

56289
27014
27014
27014
27014

150D685X903582-DYS
FDH444
FDH444
FDH444
FDH444

A6AllCR5
A6AllCR6
A6AllCR7
A6AllCR8
A6AllCR9

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FDH444
FDH444
FDH444
FDH444

AGAllCRlO
AGAllCRll
A6AllCR12
A6AllCR13
A6AllCR14

1901-1067
1901-1067
1901-1067
1901-1067
1901-1067

4
4
4
4
4

1
1
1
1
1

DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING
DIODE-SWITCHING

125V
125V
125V
125V
125V

175MA
175MA
175MA
175MA
175MA

60NS
60NS
60NS
60NS
60NS

DO-35
DO-35
DO-35
DO-35
DO-35

27014
27014
27014
27014
27014

FDH444
FOH444
FDH444
FDH444
FDH444

A6AllCR15
A6AllCR16
A6AllCR17
AGAllMPl
A6AllMP2

1901-1067
1901-1067
1901-0518

4
4
8

1
1
1

27014
27014

FDH444
FDH444
5082-2800

1480-0073

6

2

DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SWITCHING 125V 175MA 60NS DO-35
DIODE-SCHOTTKY SM SIG
NOT ASSIGNED
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU

72962

99-012-062-0250

A6Al lMP3
A6AllQl
A6AllQ2
A6AllQ3
A6AllQ4

4040-0749
1855-0414
1855-0414
1855-0414
1855-0414

4
4
4
4
4

2
1
1
1
1

EXTR-PC 8D
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

BRN POLYC .062-IN-BD-THKNS
J-FET 2N4393 N-CHAN D-MODE
J-FET 2N4393 N-CHAN D-MODE
J-FET 2N4393 N-CHAN D-MODE
J-FET 2N4393 N-CHAN D-MODE

17856
17856
17856
17856

2N4393
2N4393
2N4393
2N4393

A6AllQ5
A6AllQ6
A6AllQ7
A6AllQ8
A6AllQ9

1855-0414
1855-0414
1855-0414
1855-0414
1855-0414

4
4
4
4
4

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET
J-FET
J-FET
J-FET
J-FET

17856
17856
17856
17856
17856

2N4393
2N4393
2N4393
2N4393
2N4393

A6AllQlO
A6AllQll
A6AllQ12
A6Al lQ13
A6AllQ14

1855-0414
1854-0477
1854-0477
1854-0477
1854-0477

4
7
7
7
7

1
1
1
1
1

TRANSISTOR J-FET 2N4393 N-CHAN D-MODE
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW

17856
04713
04713
04713
04713

2N4393
2N2222A
2N2222A
2N2222A
2N2222A

A6AllQ15
A6AllQl6
A6AllQ17
A6AllQ18
A6AllQ19

1854-0477
1854-0637
1853-0281
1853-0281
1854-0477

7
1
9
9
7

1
1
1
1
1

TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2219A
TRANSISTOR PNP 2N2907A
TRANSISTOR PNP 2N2907A
TRANSISTOR NPN 2N2222A

04713
04713
04713
04713
04713

2N2222A
2N2219A
2N2907A
2N2907A
2N2222A

2N4393
2N4393
2N4393
2N4393
2N4393

N-CHAN
N-CHAN
N-CHAN
N-CHAN
N-CHAN

SI
SI
SI
SI
SI

D-MODE
D-MODE
D-MODE
D-MODE
D-MODE

TO-18 PD=500MW
TO-5 PD=800MW
TO-18 PD=400MW
TO-18 PD=400MW
TO-18 PD=500MW

*Itzdicates factory-selected vahe

85660-60238 Parts List
Page 1 of 4

HP Part Number 85660-60238
A6All Slope Generator

Reference
Designation

HP Part
Number

C
0

a)tJ
-

Mfr
Code

Description

A6AllQ20
A6AllQ21
A6AllQ22
A6AllQ23
A6A1 IQ24

1854-0472
1854-0477
1854-0477
1853-0281
1853-0281

2
7
7
9
9

1
1
1
1
1

TRANSISTOR NPN SI DARL
TRANSISTOR NPN 2N2222A
TRANSISTOR NPN 2N2222A
TRANSISTOR PNP 2N2907A
TRANSISTOR PNP 2N2907A

AGAllRl
A6AllR2”
A6AllR3
A6AllR4
A6AllR5

0757-0440
0698-3453
0757-0465
0698-3260
0757-0465

7
2
6
9
6

1
1
1
1
1

RESISTOR 7.5K
RESISTOR 196K
RESISTOR 1OOK
RESISTOR 464K
RESISTOR 1OOK

A6AllR6
A6AllR7
A6AllR8
A6Al lR9
AGAllRlO

0757-0199
0757-0465
0757-0290
0757-0465
0698-3150

3
6
5
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

AGAllRll
A6AllR12
A6AllR13
A6AllR14
A6AllR15

D757-0465
3757-0442
3757-0123
3698-0084
3757-0280

6
9
3
9
3

1
1
1
1
1

A6AllR16
A6AllR17
A6AllR18
A6AllR19
A6AllR20

3757-1094
1757-0280
1757-0416
1757-0416
1757-0416

9
3
7
7
7

A6AllR21
A6AllR22
A6AllR23
A6AllR36
A6AllR37

1757-0465
0757-0465
0698-3260
0757-0465
0757-0465

A6Al lR38
A6AllR39
A6AllR40
A6AllR41
A6AllR42

PD=SOOMW
SI TO-18
SI TO-18
SI TO-18
SI TO-18

Mfr Part
Number

04713
04713
04713
04713
04713

MPS-A14
2N2222A
2N2222A
2N2907A
2N2907A

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

21.5K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

iESISTOR
7ESISTDR
?ESISTOR
?ESISTOR
?ESISTOR

1OOK +-1% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

1
1
1
1
1

?ESISTOR
1ESISTOR
ZESISTOR
{ESISTOR
{ESISTOR

1.47K +-1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

6
6
9
6
6

1
1
1
1
1

IESISTOR 1OOK
RESISTOR 1OOK
RESISTOR 464K
RESISTOR 1OOK
RESISTOR IOOK

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

0757-0465
0757-0465
0757-0442
0757-0442
0757-0442

6
6
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1OOK +-1% .125W
1OOK +-1% .125W
10K +-1% .125W
10K +-1X .125W
10K +-I% .125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR43
A6AllR44
A6AllR45
A6AllR46
A6AllR47

D757-0442
3698-0085
3757-0442
3757-0442
3757-0442

9
0
9
9
9

1
1
1
1
1

RESISTOR
?ESISTOR
?ESISTOR
7ESISTOR
7ESISTOR

10K +-1%
2.61K 1%
10K +-1%
10K +-1%
10K +-1%

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR48
A6AllR49
A6AllR50
A6AllR51
A6AllR52

!lOO-3353
3683-3955
1757-0465
!lOO-3353
1683-3955

8
8
6
8
8

1
1
1
1
1

IESISTOR-TRMR
?ESISTOR 3.9M
7ESISTOR 1OOK
IESISTOR-TRMR
?ESISTOR 3.9M

20K 10% TKF SIDE-ADJ l-TRN
5% .25W CC TC=-900/+1100
+-1% .125W TF TC=O+-100
20K 10% TKF SIDE-ADJ l-TRN
5% .25W CC TC=-900/+1100

32997
01121
19701
32997
01121

3386X-Y46-203
C83955
SFR25H
3386X-146-203
C83955

A6AllR53
A6AllR54
A6AllR55

1757-0465
!lOO-3353
1683-3955

6
8
8

1
1
1

IESISTOR 1OOK +-1% .125W TF TC=O+-100
IESISTOR-TRMR 20K 10% TKF SIDE-ADJ I-TRN
{ESISTOR 3.9M 5% .25W CC TC=-900/+1100

19701
32997
01121

SFR25H
3386X-Y46-203
C83955

PD=500MW
PD=500MW
PD=400MW
PD=400MW

+-I% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-I% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1X .125W TF TC=O+-100

+-1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-I% .125W TF TC=O+-100

.125W
.125W
.125W
.125W
.125W

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

-

85660-60238 Parts List
Page 2 of 4

*Indicates facto y-selected value

HP Part Number 85660-60238
A6A11 Slope Generator
Reference
Designation

HP Part
Number

C
D

Description

6
8

RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN

19701
32997

SFR25H
3386X-Y46-203

Mfr
Code

Mfr Part
Number

A6AllR56
A6AllR57

0757-0465
2100-3353

A6Al lR58
A6AllR59
A6AllR60
A6AllR61
A6AllR62

0683-3955
0757-0465
2100-3353
0683-3955
0757-0465

RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1X .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR IOOK +-1% .125W TF TC=O+-100

01121
19701
32997
01121
19701

CB3955
SFR25H
3386X-146-203
CB3955
SFR25H

A6AllR63
A6AllR64
A6AllR65
A6AllR66
A6AllR67

0757-0442
0757-0442
0757-0442
2100-3353
0683-3955

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR IOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100

19701
19701
19701
32997
01121

SFR25H
SFR25H
SFR25H
3386X-Y46-203
CB3955

A6AllR68
A6AllR69
A6AllR70
A6AllR71
A6AllR72

0757-0465
2100-3353
0683-3955
0757-0465
2100-3353

RESISTOR IOOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ I-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN

19701
32997
01121
19701
32997

SFR25H
3386X-146-203
C83955
SFR25H
3386X-Y46-203

A6Al lR73
A6AllR74
A6AllR75
A6AllR76
A6AllR77

0683-3955
0757-0465
2100-3353
0683-3955
0757-0465

RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR IOOK +-I% .125W TF TC=O+-100

01121
19701
32997
01121
19701

CB3955
SFR25H
3386X-Y46-203
C83955
SFR25H

A6AllR78
A6AllR79
A6Al lR80
A6AllR81
A6AllR82

2100-3353
0683-3955
0757-0465
0698-3136
0698-3136

RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR 3.9M 5% .25W CC TC=-900/+1100
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR 17.8K 1% .125W TF TC=O+-100
RESISTOR 17.8K 1% .125W TF TC=O+-100

32997
01121
19701
19701
19701

3386X-Y46-203
C83955
SFR25H
SFR25H
SFR25H

A6A1 lR83
A6A1 lR84
A6AllR85
A6Al lR86
A6AllR88

0698-3159
2100-3273
0698-3156
0757-0280
0698-3156

5
1
2
3
2

RESISTOR 26.1K 1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 10% TKF SIDE-ADJ l-TRN
RESISTOR 14.7K 1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 14.7K 1% .125W TF TC=O+-100

19701
32997
19701
19701
19701

SFR25H
3386X-Y46-202
SFR25H
SFR25H
SFR25H

A6Al lR89
A6AllR90
A6AllR91
A6AllR92
A6Al lR93

0757-0442
0757-0438
0757-0416
0757-0290
0757-0280

9
3
7
5
3

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
511 +-1X .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6Al lR94
A6AllR95
A6AllR96
A6AllR97
A6Al lR98

0757-0280
0757-0280
0757-0280
0698-3260
0698-3157

3
3
3
9
3

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1X .125W
1K +-1% .125W
1K +-1% .125W
464K 1% .125W
19.6K 1% .125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllR99
A6AllRlOO
AGAllRlOl
A6AllR102
A6AllR103

0698-3157
0698-3157
0698-3157
0757-0199
0757-0463

3
3
3
3
4

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19.6K
19.6K
19.6K
21.5K
82.5K

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100

*Indicates factoy-selected value

85660-60238 Parts List
Page 3 of 4

HP Part Number 85660-60238
A6All Slope Generator

Reference
Designation

HP Part
Number

C
0

B!
-

Mfr

Description

Mfr Pat-l
Number

Code

A6AllR104
A6AllR105
A6AllR106
A6AllR107
A6AllR108

0757-0438
0757-0438
0757-0200
0757-0346
0757-0346

3
?
7

2
2

1
1
1
1
1

RESISTOR 5.11K +-I% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 5.62K +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100

19701
19701
19701
91637
91637

SFR25H
SFR25H
SFR25H
CMF-55-1, T-l
CMF-55-1, T-l

A6AllR109
AGAllRllO
AGAllRlll
A6AllR113
A6AllR114

3757-0346
3757-0346
3757-0465
3757-0280
3757-0442

2
2
6
3
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1X .125W TF TC=O+-100
10 +-1X .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

91637
91637
19701
19701
19701

CMF-55-1, T-l
CMF-55-1, T-l
SFR25H
SFR25H
SFR25H

A6AllR115
A6AllR116
A6AllR117
A6AllR118
A6AllR119

1757-0442
3757-0442
3757-0442
1757-0442
1757-0442

9
9
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K
IOK
10K
1OK
IOK

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6AllRlZO
AGAllTPl
A6AllTP2
A6AllTP3
A6AllTP4

1757-0442
1251-0600
1251-0600
1251-0600
1251-0600

9
0
0
0
0

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

19701
27264
27264
27264
27264

SFR25H
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A6AllTP5
A6AllTP6
A6AllTP7
A6AllTP8
AGAllUl

.251-0600
.251-0600
.251-0600
.251-0600
.826-1058

0
0
0
0
3

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC OP AMP GP 8-TO-99 PKG

27264
27264
27264
27264
06665

16-06-0034
16-06-0034
16-06-0034
16-06-0034
OP-02CJ

A6AllU2
A6AllU3
A6AllU4
A6AllU5
A6AllU6

iO81-8117
820-1281
iO81-8117
826-0161
iO81-8117

1
1
1
1
1

SCREENED 1826-0092
IC OCDR TTL LS 2-TO-4-LINE DUAL
SCREENED 1826-0092
IC OP AMP GP QUAD 14-DIP-P PKG
SCREENED 1826-0092

28480
01295
28480
27014
28480

5081-8117
SN74LS139AN
5081-8117
LM324N
5081-8117

A6Al lU7
A6AllU8
A6AllU9
AGAllUlO
AGAllUll

826-1058
820-1195
820-1196
820-1730
826-0188

3
r
3
5
3

1
1
1
1
1

IC OP AMP
IC FF TTL
IC FF TTL
IC FF TTL
1/A 8-BIT

GP 8-TO-99 PKG
LS D-TYPE POS-EDGE-TRIG COM CL
LS D-TYPE POS-EDGE-TRIG COM CL
LS D-TYPE POS-EDGE-TRIG COM CL
16-CERDIP BPLR

06665
01295
01295
01295
04713

OP-02CJ
SN74LS175N
SN74LS174N
SN74LS273N
MC1408L-8

AGAllVRl
A6AllVR2
A6AllVR3
A6AllVR4

902-0625
902-0041
902-3203
902-0025

1
1
5
1

1
1
1
1

IIODE-ZNR
IIODE-ZNR
)IODE-ZNR
IIODE-ZNR

lN829 6.2V 5% DO-35 PD=.25W
5.11V 5% DO-35 PD=.4W
14.7V 5% DO-35 PD=.4W
1OV 5% DO-35 PD=.4W TC=+.06%

04713
04713
04713
04713

IN829

+-I%
+-1%
+-1%
+-1%
+-1%

.125W
.125W
.125W
.125W
.125W

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

-

85660-60238 Parts List
Page 4 of 4

*Indicates factory-selected value

SQ
SQ
SQ
SD
SQ
SQ
SQ
SQ

R84
GAIN

R48
Al

R66
A2

R51
Bl

R69 R54
82
Cl

2:

R72
C2

R57 R75
Dl
D2

R60
El

R78
E2

Pl

A6All Slope Generator Component Locations, 85660-60126, 85660-60238

A6A12
A6A12 YIG-Tuned Mixer (YTX) Driver, Circuit Description
The YTX Driver receives a voltage proportional to the instrument LO frequency and produces
a signal to control current in the YTX coil.

Input Differential Amplifier @
This input signal to the YTX Driver comes from the A19 DAC and is -3 V/GHz. For
example, as the YTO Loop sweeps from 2 to 6 Ghz, this input signal sweeps from -6 to
-18 V. It is buffered by differential amplifier UlA, and appears at TPl.

Bandswitch @
The frequency that the YTX is tuned to must be made to follow the first, second, third,
or fourth harmonic of the YTO frequency, depending on the frequency band in which the
instrument is operating. This is done by attenuating the buffered input signal with a voltage
divider as shown in Figure 1.

TPl
-3V/GHz(LO) 0

R5
2K

0
R7
1K

R8
1K

R9
1K

RlO
1K

* -.525V/GHz(YTX)

0

0

Figure 1. Bandwidth Voltage Divider
The position on the attenuator is determined by the harmonic number in use. The
bandswitching is done with FET Ql, Q2, Q3, and Q12. The bandswitch information used to
turn on the FETs comes from A6All Slope Generator. R6 and Rll to R14 form a second
voltage divider used as a gate return through R15 to R18. This prevents current through
bandswitch diodes and resistors (for example, R19 and CRl) when the associated FET is
switched off from affecting the bandswitch voltage divider R5 and R7 to RlO.

A6A12

1

Sample and Hold @
The output of the bandswitch drives preamp U5. U5 and UlB together form an op amp with
U5 a low-noise, low-temperature drift preamplifier. U5, UlB, and U6 are used in a sample and
hold circuit as shown in Figure 2.
Q15, a JFET, is used as the switch for the sample and hold. The switch is opened (that is,
the FET is turned off) whenever a bandcrossing occurs. When a bandcrossing occurs, the
input voltage at Jl changes as the YTO Loop resets its frequency to start a new band, and
the YTX bandswitch changes bands. At this time, the voltage at the input of U5 varies.
The sample and hold circuit is used to prevent these variations from reaching the YTX.
The sample and hold switch is controlled through Q14 by a signal from the A6All Slope
Generator. R44, R45, CRlO, and CR11 keep the output of UlB from saturating when the
feedback loop is opened by Q15 being off. This prevents a “glitch” at the output of U6 when
the loop closes if UlB suddenly had to recover from a saturated condition.

FROM
BANDSWITCH
TP5

R48
1K

20K

i
TO IF
OFFSET

Figure 2. YTX Driver Sample and Hold, Simplified Schematic

IF Offsets @
In addition to tracking a harmonic of the YTO, the YTX must be offset from this LO
harmonic by the first IF (321.4 MHz). T his is done by U7A and its associated components.
Q7 to QlO switch in different IF offset adjustments for each band. The YTX peaking signal
from A6All Slope Generator is also summed into U7A through R77.

Sweep + Tune @I
Since the U5, UlB, and U6 combination have a gain of 1.05 set by R48 and R75, the voltage
at TP5 has an sensitivity of -0.525 V/GHz (YTX). T his signal goes to the A6All Slope
Generator, to voltage divider R54 and R55, and to U8. U8 is set to give -1 V/GHz at its
output which goes to J2. This signal is cabled to the rear panel of the instrument to provide
an analog voltage proportional to input frequency. U2A and its associated circuitry provide an
offset voltage for U8 to correct for the first IF (3.6214 GHz) in the 0 to 2.5 GHz band. R98 is
adjusted for 0 V at U2 with the spectrum analyzer tuned to 0 Hz.

2 A6A12

YTX Drive Output @
Voltage divider R54 and R55 drive the output stage shown in Figure 3.
R, and the output transistor are on A6A7 YTX Current Driver. The YTX has a nominal coil
sensitivity of 75 MHz/mA. R63 and R66 provide the means for compensating for variations
amount YTXs. When the YTX center frequency is tuned to 5.8 GHz, the voltage at pin 3 of
U3 is +1.52 V. There is no voltage across R66 so it has no effect. R63 is adjusted for tracking
at 5.8 GHz and R66 is adjusted at 2 Ghz. U4A and voltage divider R68 and R69 provide the
t1.52 V source.
The YTX magnet exhibits hysteresis which must be corrected for. This is done by signals
from the A6All Slope Generator which is controlled by the instrument controller. QlS is
turned on for a short period of time to correct for hysteresis in narrow spans (
,

1
1
1
1
1

?ESISTOR
?ESISTOR
7ESISTOR
ZESISTOR
?ESISTDR

1.96K
1.96K
1.96K
196K
196K

A6A12R17
A6A12R18
A6A12R19
A6A12R20
A6A12R21

1698-3453
1698-3453
1757-0280
1757-0280
1757-0280

2
2
3
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196K 1%
196K 1%
1K +-1%
1K +-1%
1K +-1%

A6A12R22
A6A12R23
A6A12R24

1757-0280
1757-0442
1100-3353

3
9
9

1
1
1

RESISTOR 1K +-1X .125W TF TC=O+-100
RESISTOR IOK +-1X .125W TF TC=O+-100
RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN

2N4393
2N4391
2N4391
2N4391
2N4393

1% .125W
1% .125W
1% .125W
1% .125W
1% .125W
.125W
.125W
.125W
.125W
.125W

N-CHAN
N-CHAN
N-CHAN
N-CHAN
N-CHAN

D-MODE
D-MODE
D-MODE
D-MODE
D-MODE

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

19701
19701
32997

SFR25H
SFR25H
3386X-Y46-203

-

8566040366 Parts List
Page 2 of 5

*Indicates factory-selected value

HP Part Number 85660-60366
A6A12 YTX Driver
Reference
Designation

Mfr
Code

Description

HP Part c
Number
D QtY

Mfr Part
Number

A6A12R25
A6A12R26

2100-3353
2100-3357

8
2

1
1

RESISTOR-TRMR 20K 10% TKF SIDE-ADJ l-TRN
RESISTOR-TRMR 500K 10% TKF SIDE-ADJ l-TR

32997
32997

3386X-Y46-203
3386X-Y46-504

A6A12R27
A6A12R28
A6A12R29
A6A12R30
A6A12R31

0698-3453
0698-3453
0698-3453
0757-0280
0757-0280

2
2
2
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A12R32
A6A12R33
A6A12R34
A6A12R35
A6A12R36

0757-0280
0757-0442
0757-0438
0757-0438
0698-3157

3
9
3
3
3

1
1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 10K +-I% .125W TF TC=O+-100
RESISTOR 5.11K +-1X .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 19.6K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A12R37
A6A12R38
A6A12R39
A6A12R40
A6A12R41

0698-3157
0698-4037
0698-4037
0757-0401
0698-4037

3
0
0
0
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A12R42
A6A12R43
A6A12R44
A6A12R45
A6A12R46

0698-4037
0698-8827
0698-0083
0757-0401
0757-0465

0
4
8
0
6

1
1
1
1
1

RESISTOR 46.4 1% .125W TF TC=O+-100
RESISTOR 1M +-1X .125W TF TC=O+-100
RESISTOR 1.96K 1% .125W TF TC=O+-100
RESISTOR 100 +-1% .125W TF TC=O+-100
RESISTOR 1OOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A6A12R47
A6A12R48
A6A12R49
A6A12R50
A6A12R51

0698-0082
0698-8625
0757-0442
0757-0465
0757-0280

7
0
9
6
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

464 1% .125W TF TC=O+-100
1K +-0.1% .lW TF TC=O+-5
10K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
1K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50232
SFR25H
SFR25H
SFR25H

A6A12R52
A6A12R54
A6A12R55
A6A12R56
A6A12R57

0757-0442
0698-7479
0698-7479
0698-3157
0698-3157

9
0
0
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
10K +-0.1% .225W MF TC=O+-1.5
10K +-0.1% .225W MF TC=O+-1.5
19.6K 1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100

19701
18612
18612
19701
19701

SFR25H
301359
301359
SFR25H
SFR25H

A6A12R58
A6A12R59
A6A12R60
A6A12R61
A6A12R62

0698-0082
0698-4037
0698-4037
0698-8625
0698-8827

7
0
0
0
4

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

464 1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100
1K +-0.1% .lW TF TC=O+-5
1M +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50232
SFR25H

A6A12R63
A6A12R64"
A6A12R65
A6A12R66
A6A12R67

2100-3962
0698-7133
0698-8485
2100-3962
0698-8625

5
3
0
5
0

1
1
1
1
1

RESISTOR-TRMR 5K 10% TF SIDE-ADJ 25-TRN
RESISTOR 15K +-0.05% .225W MF TC=O+-1.3
RESISTOR 6.69K +-0.1% .lW TF TC=0+4
RESISTOR-TRMR 5K 10% TF SIDE-ADJ 25-TRN
RESISTOR 1K +-0.1% .lW TF TC=O+-5

18612
18612
19701
18612
19701

1280
301358
50232
1280
50232

A6A12R68
A6A12R69
A6A12R70
A6A12R71
A6A12R72

0698-8485
0698-6407
0698-3158
0757-0442
0757-0442

0
2
4
9
9

1
1
1
1
1

RESISTOR 6.69K +-0.1% .lW TF TC=0+4
RESISTOR 32.8K +-0.1% .lW TF TC=0+4
RESISTOR 23.7K 1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 10K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50232
50232
SFR25H
SFR25H
SFR25H

196K 1%
196K 1%
196K 1%
1K +-1%
1K +-1%

.125W
.125W
.125W
.125W
.125W

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

19.6K 1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100

*Indicates factory-selected value

85660-60366 Parts List
Page 3 of 5

HP Part Number 85660-60366
A6A12 YTX Driver

Reference
Designation I

HP Part
Number

C
c

A6A12R73
A6A12R74
A6A12R75
A6A12R76
A6A12R77

(1698-3151
(1757-0442
(1698-8161
(1757-0442
11757-0465

A6A12R78
A6A12R79
A6A12R80
A6A12R81
A6A12R82

(1698-3161
()698-3161
c1698-3161
c1698-3161
2!lOO-1661

E
9
9

A6A12R83
A6A12R84
A6A12R85
A6A12R86
A6A12R87

;Itl
-

Mfr
Code

Description

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

9
7

1
1
1
1
1

RESISTOR 38.31: 1% .125W
RESISTOR 38.3K 1% .125W
RESISTOR 38.31: 1% .125W
RESISTOR 38.3K 1% .125W
RESISTOR-TRMR 20K 5% Ww

21100-1661
21100-1661
21100-1661
a1698-3453
a1698-3453

7
7
7
2
2

1
1
1
1
1

RESISTOR-TRMR
RESISTOR-TRMR
RESISTOR-TRMR
RESISTOR 196K
RESISTOR 196K

A6A12R88
A6A12R89
A6A12R90
A6A12R91
A6A12R92

a1698-3453
II 1698-3453
0 1757-0280
0 1757-0280
0 757-0280

2
2
3
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196K 1%
196K 1%
1K +-1%
1K +-1X
1K +-I%

A6A12R93
A6A12R94
A6A12R95
A6A12R96
A6A12R97

0 757-0280
0 757-0465
0 757-0401
0 698-3156
0 757-0444

3
6
0
2
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
14.7K 1% .125W TF TC=O+-100
12.1K +-1% .125W TF TC=O+-100

A6A12R98
A6A12R99
A6A12RlOO
A6A12RlOl
A6A12R102

2 100-3390
0 757-0442
0 757-0442
0 757-0458
0 757-0289

3
9
9
7
2

1
1
1
1
1

A6A12R103
A6A12R104
A6A12R105
A6A12R106
A6A12R107

C1757-0346
C1757-0346
C1757-0346
C1757-0346
a1698-5667

A6A12R108
A6A12R109
A6A12RllO
A6A12Rlll
A6A12R112

2.87K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
20K +-1% .lW TF TC=O+-5
10K +-1% .125W TF TC=O+-100
IOOK +-1% .125W TF TC=O+-100

Mfr Part
Number

19701
19701
19701
19701
19701

SFR25H
SFR25H
50232
SFR25H
SFR25H

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
SIDE-ADJ 22-TRN

19701
19701
19701
19701
32997

SFR25H
SFR25H
SFR25H
SFR25H
3057P-DM3-203

5% WW SIDE-ADJ 22-TRN
5% Ww SIDE-ADJ 22-TRN
5% WW SIDE-AOJ 22-TRN
.125W TF TC=O+-100
.125W TF TC=O+-100

32997
32997
32997
19701
19701

3057P-DM3-203
3057P-DM3-203
3057P-DM3-203
SFR25H
SFR25H

.125W
.125W
.125W
.125W
.125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

RESISTOR-TRMR 1K 10% TF SIDE-ADJ 25-TRN
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 10K +-I% .125W TF TC=O+-100
RESISTOR 51.1K +-I% .125W TF TC=O+-100
RESISTOR 13.3K +-1% .125W TF TC=O+-100

18612
19701
19701
19701
19701

1202-Y-1K
SFR25H
SFR25H
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .125W TF
10 +-1% .125W TF
10 +-1X .125W TF
10 +-1% .125W TF
375 +-0.25% .125W

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TF TC=O+-25

91637
91637
91637
91637
19701

CMF-55-1.
CMF-55-1,
CMF-55-1,
CMF-55-1,
5033R

a1698-0083
a1698-7479
0 1757-0401
0 1757-0438
0 1698-8547

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K 1% .125W TF TC=O+-100
10K +-0.1% .225W MF TC=O+-1.5
100 +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
4K +-0.5x .lW TF TC=O+-5

19701
18612
19701
19701
19701

SFR25H
301359
SFR25H
SFR25H
50232

A6A12R113
A6A12R114
A6A12R115
A6A12R116
A6A12R117

2 100-3154
0 698-8067
0 698-8067
0 757-0401
0 757-0438

1
1
1
1
1

RESISTOR-TRMR IK 10% TKF SIDE-ADJ 17-TRN
RESISTOR 5K +-0.01% .15W MF TC=O+-1.3
RESISTOR 5K +-0.01% .15W MF TC=O+-1.3
RESISTOR 100 +-1% .125W TF TC=O+-100
RESISTOR 5.11K +-I% .125W TF TC=O+-100

73138
18612
18612
19701
19701

89PRlK
301358
301358
SFR25H
SFR25H

A6A12R118
A6A12R119
A6A12R120

0 757-0442
0 698-8827
0 698-3437

1
1
1

RESISTOR 10K +-I% .125W TF TC=O+-100
RESISTOR IM +-1% .125W TF TC=O+-100
RESISTOR 133 1% .125W TF TC=O+-100

19701
19701
19701

SFR25H
SFR25H
SFR25H

20K
20K
20K
1%
1%

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

-

85660-60366 Parts List
Page 4 of 5

*Indicates factory-selected value

T-l
T-l
T-l
T-l

HP Part Number 85660-60366
A6A12 YTX Driver

Reference
Designation

HP Part
Number

C

D

31
-

A6A12R121
A6A12R122

3757-0438
3757-0442

3
9

1
1

RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100

A6A12R123
A6A12TPl
A6A12TP2
A6A12TP3
A6A12TP4

1757-0465
1251-0600
1251-0600
L251-0600
1251-0600

6
0
0
0
0

1
1
1
1
1

RESISTOR 1OOK +-1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

A6A12TP5
A6A12TP6
A6A12Ul
A6A12U2
A6A12U3

1251-0600
1251-0600
iO81-8117
iO81-8117
.826-0162

0
0
3
3
8

A6A12U4
A6A12U5
A6A12U6
A6A12U7
A6A12U8

iO81-8117
.826-0162
.826-0371
iO81-8117
826-1058

A6A12VRl
A6A12VR3
A6A12VR4
A6A12VR5

902-3203
902-0025
902-3203
902-0686

Mfr Part
Number

Mfr
Code

Description

19701
19701

SFR25H
SFR25H

SQ
SQ
SQ
SQ

19701
27264
27264
27264
27264

SFR25H
16-06-0034
16-06-0034
16-06-0034
16-06-0034

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
SCREENED 1826-0092 OP AMP
SCREENED 1826-0092 OP AMP
IC PREAMPLIFIER TO-99 PKG

27264
27264
28480
28480
27014

16-06-0034
16-06-0034
5081-8117
5081-8117
LM321H

3
8
1
3
3

1
1
1
1
1

SCREENED 1826-0092 OP AMP
IC PREAMPLIFIER TO-99 PKG
IC OP AMP LOW-BIAS-H-IMPD TO-99 PKG
SCREENED 1826-0092 OP AMP
IC OP AMP GP a-TO-99 PKG

28480
27014
27014
28480
06665

5081-8117
LM321H
LF256H
5081-8117
OP-OLCJ

6
4
6
3

1
1
1
1

DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR 1OV 5% DO-35 PD=.4W TC=+.06%
IIODE-ZNR 14.7V 5% DO-35 PD=.4W
IIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%

04713
04713
04713
04713

lN825

-

*Indicates factoy-selected value

85660-60366 Parts List
Page 5 of 5

D3

D2

Dl

I
~00000000000000~l
1
1 6

+ +

R24
D3

R’25
D2

+ + +.

C3 USED
ONLY IN 8566A

15
3 0

Pl
85660-60366

R26
Dl

-1

P/O 85660-60013

P/O 85660-60235

I

A6A12 YTX Driver Component Locations, 85660-60366, 85660-60013, 85660-60235

HP Part Number 85660-60014
A6A13 RF Module Motherboard
HP Part
Number

C
c

A6A13

85660-60014

1

1

BOARD ASSEMBLY, RF MODULE MOTHERBOARD

28480

85660-60014

A6A13Cl
A6A13C2
A6A13C3
A6A13C4
A6A13C5

0180-2216
0180-1997
0180-2144
0180-1819
0160-3879

f
t
c
:
;

1
1
1
1
1

CAP-FXD 35OuF 16 V
CAP-FXD 2OuF 150 V
CAP-FXD 2OOuF 25 V
CAP-FXD 1OOuF 50 V
CAPACITOR-FXD .OlUF

AL-ELCTLT
AL-ELCTLT
AL-ELCTLT
AL-ELCTLT
+-20% 1OOVDC CER

56289
56289
56289
56289
04222

30D357G016DH2-DSM
30D206F150DH2-DSM
30D207G025DH9-DSM
30D107G050DH2-DSM
SR201C103MAAH

A6A13C6
A6A13C7
A6A13Jl
A6A13J2
A6A13J3

0180-0229
0180-0141
1251-5550
1251-5144
1251-5549

i
i
c
i
E

1
1
1
1
1

CAP-FXD 33uF 10 V TA
CAP-FXD 5OuF 50 V AL-ELCTLT
CONN-POST TYPE .lOO-PIN-SPCG 26-CONT
CDNN-POST TYPE .lOO-PIN-SPCG 13-CONT
CONN-POST TYPE .lOO-PIN-SPCG 50-CONT

56289
56289
18873
00779
18873

150D336X901082-DYS
30D506G050DD2-DSM
68025-626
87502-6
68025-650

A6A13J4
A6A13J5
A6A13Ll
A6A13L2
A6A13L3

1251-5145
1200-1204
08558-80011
08558-80011
08558-80011

E
L
E
E
E

1
1
1
1
1

CDNN-POST TYPE .lOO-PIN-SPCG ll-CONT
SOCKET-IC 14-CDNT DIP DIP-SLDR
INDUCTOR FILTER COIL BLUE 1OOUH
INDUCTOR FILTER COIL BLUE 1OOUH
INDUCTOR FILTER COIL BLUE IOOUH

00779
00779
28480
28480
28480

87502-5
2-641609-2
08558-80011
08558-80011
08558-80011

A6A13L4
A6A13L5
A6A13L6
A6A13MPl
A6A13Rl

08558-80011
9140-0144
08558-80011

E
C
E

1
1
1

28480
99800
28480

08558-80011
1025-36
08558-80011

3757-0401

C

1

INDUCTOR FILTER COIL BLUE 1OOUH
INDUCTOR RF-CH-MLD 4.7UH +-lo% .1050-INX
INDUCTOR FILTER COIL BLUE 1OOUH
NOT ASSIGNED
?ESISTOR 100 +-1% .125W TF TC=O+-100

19701

SFR25H

A6A13VRl
A6A13XA6A3
A6A13XA6A9
A6A13XA6AlO
A6A13XA6All

1902-0049
1251-2035
1251-2035
1251-1365
1251-1365

2
9
9
6
6

1
1
1
1
1

DIODE-ZNR 6.19V 5% DO-35 PD=.4W
CONNECTOR-PC EDGE 15-CDNT/ROW 2-ROWS
CONNECTOR-PC EDGE 15-CDNT/ROW E-ROWS
:ONNECTOR-PC EDGE 22-CONT/RDW 2-ROWS
:ONNECTDR-PC EDGE 22-CDNT/ROW 2-ROWS

04713
26742
26742
26742
26742

220-624-03
220-624-03
220-626-03
220-626-03

A6A13XA6A12

1251-2035

9

1

:ONNECTOR-PC EDGE 15-CDNT/ROW 2-ROWS

26742

220-624-03

Reference
Designation

zlt
-

Description

Mfr
Code

Mfr Part
Number

-

*Indicates factory-selected value

85660-60014 Parts List
Page 1 of 1

3

0

0

rl
I

1

I

1

I 1

0 0

1J31

0

0

r

XA6A9

m
0

-1
I
Jl

XAGAlO

1

XA6All

0

XA6A12

0

-I
1

0

0

A6A13 RF Module Motherboard Component Locations, 85660-60014

A7
A7 M/N Reference, Troubleshooting
Reference
All phase lock loops in the HP 8566B are referenced to the A22 10 MHz Frequency Standard.
The 10 MHz Frequency Standard is used to directly phase-lock the A7A2 100 MHz VCXO
only. All other phase lock loops receive their reference from either the A7Al or A7A2 (10 and
20 MHz from the A7Al and 100 and 400 MHz from the A7A2).
A malfunction of the 100 MHz VCXO is indicated by all phase lock error messages (PLl
UNLOCK,PL2UNLOCK, REFUNLOCK, YTO UNLOCK, M/NUNLOCK, and HETUNLOCK) being
displayed on the HP 8566B CRT. Table 1 lists the phase lock error messages, related
reference, location for measurement, and signal level.
Table 1. Phase Lock Error Messages
Phase Lock Error Message

Reference
Frequency

output
Connector

Level
(dB4

PLl UNLOCK

100 MHz

A7A2J3

0

PLl UNLOCK

10 MHz

A7AlJ4

0

PL2 UNLOCK

10 MHz

A7AlJ5

0

YTO UNLOCK and M/N UNLOCK 400 MHz

A7A2Jl* - 1 0

20 MIIz

A7AlJ3

0

IIET UNLOCK

100 MHz

A7A254

0

All Flags

100 MHz

A7A2J2

0

YTO UNLOCK and M/N UNLOCK

* Measure output at end of A7A2Wl 96 cable.

M/N Loop
The M/N Loop consists of a 355 to 395 MHz VCO, part of A7A4, and a phase detector, part
of A7A3. The output of the VCO is divided by two and is used to drive the AllA Sampler
assembly. This divided signal is disabled by means of control line LMNE during sweeps when
the frequency span is greater than 5 MHz (fundamental mixing). The two divider numbers, M
and N, are selected by the Al5 Controller such that the Nth harmonic (same as the N divide
number) of the divided VCO output changes in exactly 10 MHz increments as M is changed.

A7 1

For example:
If M = 26,
N = 20,
and VCO Frequency = 187.0 MHz,
then M/N output frequency = N (VCO) = 20 x 187.0 = 3,740 MHz.
If M is changed to 25,
then the VCO frequency changes to 187.5 MHz,
and the M/N output frequency changes to 3,750 MHz (20

x

187.5).

Result = 10 MHz change for M divider change of 1.
An incorrect M or N number, due to the main controller or a bad latch on A7A3, can be
easily detected. The frequency diagnostic (SHIFT) MKR+ REF LVL gives the M and N numbers
and the M/N output frequency (VCO divided by two) for the start frequency selected. A
frequency counter attached to A7A4J2 indicates the actual frequency output. Table 2, “M
and N Numbers and Resulting Frequencies,” of the RF Section Analog Troubleshooting tab,
lists all possible M/N output frequencies. By locating the M/N frequency measured by the
counter, the M and N numbers required to produce this frequency are obtained. The M and
N numbers can then be compared to those shown in the frequency diagnostic. The latch
and divider for the number in error can then be located using the troubleshooting procedure
outline for A7A3.

A7 M/N Reference Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

I
w

Removal
1. Remove ac line cords, IF-Display Section, and RF Section top and bottom covers.
2. Remove the following cables from A7 M/N Reference:
80 (gray/black) cable (A7AlJ1, STD IN) 0
86 (gray/blue) cable (A7AlJR, 10 MHz OUT) @
9 (white) cable (A7AlJ5, 10 MHz OUT) @
85 (gray/green) cable (A7A2J4, 100 MHz OUT) @
8 (gray) cable (A7A2J3, 100 MHz OUT) @
93 (white/orange) cable (A7A4J2, M/N OUT) @
6 (blue) cable (A7AlJ6, 10 MHz OUT) 0

2 A7

3. Remove clear plastic shield from motherboard (Figure 1) by removing all screws. Remove
eight screws @ from the motherboard.
Screws are marked on motherboard with the letter B for easy identification.

Note

I

I

CLEAR
PLASTIC
SHIELD

Figure 1. A7 M/N Reference Removal and Installation
4. Position A7 section in RF Section and secure with eight screws 0. Replace clear plastic
shield over motherboard. Reconnect cables removed in step 2.
5. Replace RF Section top and bottom covers. Reassemble IF-Display Section to RF Section.
Reconnect ac line cords.

A7 3

( 6

PLACES)Q

Q

9
10

ck

8
0'

7

d

n3I
/
\
47A5P 1

n
A7A5

“‘ZE 1I

\

\

\

C6

CQ

u

-

-

c15

c7

C8

\
j

/

a

/I

\

\

/

Iiji’iDET

, j 100 MtiZ “CXD

OETr
XA7A1 L

Circuit

Figure 2. A7 M/N Reference, Parts Identification (1 of 2)

4 A7

Sid

’ A7A5P2

H P Part
Number

CD

1

86701-40001

9

EXTRACTOR, PC BOARD

48280 86701-40001

2

2200-0105

4

SCREW, MACH, 4-40, .312-IN LG, PAN HD

28480 2200-0105

3

8566@20049

1

COVER, PC BOARD (A7A4 M/N OUTPUT)

28480 85660-20049

4

85660-20047

9

COVER, PC BOARD (A7A3 M/N 0 DET)

28480 85660-20047

5

8566CL20046

8

COVER, PC BOARD (A7A2 100 MHz VCXO)

28480 85660-20046

6

85660-20045

7

COVER, PC BOARD, (A7Al REF 0 DET)

28480 85660-20045

7

5021-3208

7

HOUSING, M/N-REFERENCE BLOCK

22480 5021-3208
28480 86701-00024

Item

Description

Mfr
Code

Mfr Part
Number

8

86701-00024

2

AIR SCOOP

9

86701-00029

7

AUR BAFFLE, TOP

28480 86701-00029

10

86701-00030

0

AIR BAFFLE, BOTTOM

28480 86701-00030

11

2200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

28480 2200-0103

12

0460-0778

5

TAPE, ADHESIVE, FOAM CUSHION (4-IN)

28480 0460-0778

Figure 2. A7 M/N Reference, Parts Identification (2 of 2)

A7 5

A7Al
A7Al Reference Phase Detector, Circuit Description
The A7Al Reference Phase Detector contains the frequency divider, phase detector, and
integrating amplifier for the 100 MHz Reference phase-lock loop. Basically, 100 MHz from
the A7A2 VCXO is divided by 10 and compared to the 10 MHz frequency reference by the
phase detector. The error voltage from this comparison is fed back to the VCXO to keep its
frequency locked to 10 times that of the frequency reference. The bandwidth of the reference
phase-lock loop is 100 Hz; the 10 MHz derived from the 100 MHz VCXO must be within 100
Hz of the 10 MHz frequency reference for the loop to lock reliably.

Limiting Amplifier @
Ul amplifies and limits the amplitude of the reference signal from the rear panel FREQ
REFERENCE input. For proper operation of the 100 MHz Reference phase-lock loop, this
signal should be 5 MHz f25 Hz or 10 MHz f50 Hz at a power level of 0 dBm to +lO dBm.
The internal A22A2 10 MHz Quartz Crystal Oscillator provides a stable, high spectral purity
10 MHz frequency reference at a power level of at least +7 dBm at the rear panel FREQ
REFERENCE output. A short BNC jumper cable is normally connected between the FREQ
REFERENCE input and output jacks to route the internal frequency reference signal to
the 100 MHz Reference phase-lock loop. The spectral purity of the FREQ REFERENCE
input signal directly affects the instrument phase noise performance. The internal frequency
reference remains off during instrument warmup (from a cold start) until it reaches thermal
equilibrium.

Pulse Generator @
U2D is biased with feedback resistor RlO to further limit the 10 MHz to a well-shaped square
wave and set the proper logic levels for digital buffer U2C. U2A and U2B generate narrow
pulses, the width being the gate delay of U2A plus the delay from Rll and C5. When the
output of U2C goes low, the output of U2B goes high after one gate delay (of U2B). After a
delay due to Rll, C5 and U2A gate delay, the output of U2A goes high which causes U2B
output to return low again, thus generating a narrow pulse.

Phase Lock Sampler @
The phase lock sampler performs the function of phase detector. The 10 MHz pulses from the
buffer amplifier are applied to the primary of Tl which causes CR3 and CR4 to turn on for
the duration of the pulses. This samples the divided by 10 VCXO frequency and stores this
voltage on C36. When the loop is locked, the feedback due to the complete phase-lock loop
forces this voltage to be nearly zero. When the loop is unlocked, this voltage may be zero or
varying, depending on the reason for unlock.

A7A1

1

Integrating Amplifier @
Q4 is a differential input pair which together with Q5 and Q6 forms a high gain amplifier.
Feedback is added with C32 and R49 to make an integrating amplifier. C32 provides ac
feedback only, so for the amplifier to remain linear, dc feedback is accomplished by virtue of
the entire phase-lock loop.

VCXO Divider and Buffers @
100 MHz from the A7A2 VXCO is applied to the counter U3 which divides by 5, then by
2. Its outputs are 10 MHz and 20 MHz which are buffered by U4 to be used as reference
frequencies by other assemblies in the instrument. The other 10 MHz output is used to drive
the Phase Lock Sampler @J and Lock Indicator Sampler 0.

45” Phase Lead and Buffer Amplifier @ and
45” Phase Lag and Buffer Amplifier @
The 45’ phase shift buffers are used to provide two 10 MHz signals which are 90” apart in
phase, the purpose of which is explained in Lock Indicator Sampler description. 45” phase
shift in @ is accomplished with C35 and R53, while in @) it is done by R59 and C38.

Lock Indicator Sampler (ij
The lock indicator sampler functions the same as the phase lock sampler 0. The only
difference is that the 10 MHz is 90” shifted in phase. This causes the output of the lock
indicator sampler to be maximum negative voltage when the loop is locked, since in this state
the output of the phase-lock sampler is 0 V.

Phase Lock Detector @
The output of the lock indicator sampler is compared to -0.5 V by U5. When the output
voltage becomes closer to 0 than to -0.5 V, U5 switches its output to TTL high to indicate to
the Al5 Controller that the 100 mHz Reference phase-lock loop is unlocked.
During instrument warmup, the A22A2 10 MHz Quartz Crystal Oscillator remains off for a
few minutes until thermal equilibrium is reached. It is normal for both an OVEN COLD and
REF UNLOCK indication to appear on the CRT during these first few minutes of instrument
operation after a cold start.

2

A7A1

A7Al Reference Phase Detector, Troubleshooting
The A7Al Reference Phase Detector compares the output of the 10 MHz Frequency Standard
to the output of the A7A2 100 MHz VCXO and provides the tuning drive voltage for the
VCXO. A phase lock detector in A7Al indicates to the main processor (A15) the state of the
Reference Phase Lock Loop.

Samplers @, @
The Phase Lock and Lock Indicator Samplers are identical. The diodes are biased to
approximately the same level in each. The dc bias on the diodes is as shown in Table 1.
Table 1. Sampler Diode Bias Voltage Levels

I

Diode

CR3 Anode
CR4 Cathode
CR5 Cathode
CR6

Anode

The Phase Lock Sampler output (junction of R32 and R34) is 0.0 V when locked or with no
10 MHz reference, and approximately +O.l V with no 100 MHz input. The Lock Indicator
output (junction of R25 and R23) is -1.5 V when locked, 0.0 V with no 10 MHz reference,
and approximately +0.2 V with no 100 MHz input.

45’ Phase Lead Amplifier @I and
45” Phase Lag Amplifier @
The Phase Amplifiers shift the 100 MHz VCXO signal, which has been divided by 10 by U3,
+45” and -45” respectively. Figure 1 is typical of the waveforms at the collectors of Ql and
Q2. The dc voltages for Ql and Q2 are as shown in Table 2. The waveform of Ql leads the
waveform of Q2 by approximately 20 nanoseconds in Figure 1.

A7A7

3

Q2

Figure 1. Outputs of 49 Phase Amplifiers
Oscilloscope Settings
Vertical

0.05 V/Div AC

Horizontal

0.05 ps/Div

Probe

1O:l

Analyzer Settings
INSTR PRESET
Table 2. Phase Amplifier Voltage Levels
Voltage Levels

Ql

Q2

Emitter

-8.0

-8.0

Base

-7.4

-7.4

Collector -3.6

-3.6

Limiting Amplifier @
The Limiting Amplifier shapes and amplifies the 10 MHz reference from the Frequency
Standard (A22). Typical voltage levels for Ul are shown in Table 3.

Table 3. Limiting Amplifier Voltage Levels

I

Ul Pin Number Idc Voltage Level

1
I

+5.0

Table 3. Limiting Amplifier Voltage Levels
LJl Pin Number dc Voltage Level
1

+5.0

2

0.0

3

+0.5

4

0.0

5

+2.3

6

+2.3

7

+1.6

8

I

t5.0

Pulse Generator @
Typical input/output waveforms for the Pulse Generator are shown in Figure 2 and Figure 3.

Figure 2. Pulse Generator Input Waveforms
Oscilloscope Settings
Vertical
Horizontal
Probes
Channel A
Channel B

0.1 V/Div
ps/Div
X10 Magnifier
1O:l
U2B Pin 5
U2A Pin 2
0.2

Analyzer Settings
INSTR PRESET

A7A7

5

Figure 3. Pulse Generator Output Pulses
Oscilloscope Settings
Vertical
Horizontal
Probe
Channel A

0.1 V/Div
0.05 ps/Div
1O:l
U2B Pin 4 (TPl)

Analyzer Settings
INSTR PRESET

Buffer Amplifier @
Typical voltage levels for the Buffer Amplifier are shown in Table 4.
Table 4. Buffer Amplifier Voltage Levels
1
Voltage Level: s

Q3

Q7

Emitter

-4.6

-4.6

Base

-4.5

-4.5

Collector -0.3

-9.4

Integrating Amplifier @
Typical voltage levels for the Integrating Amplifier are shown in Table 5.
Integrating Amplifier tune voltage output (junction of R75 and R51):
-8.6 V (locked)
-1.4 V (unlocked with no 100 MHz)

6 A7Al

Note

The 100 MHz VCXO Tune Voltage can be measured at A7A2TPl. However,
the voltage levels will be slightly lower than those listed above.

Table 5. Integrating Amplifier Voltage Levels
lhnsistors

de Voltage Levels

24A
Pin 1

+0.18

Pin 2

+9.8

0.0 (locked)
Pin 3

0.0 (no 10 MHz) Ref.
+O.l (no 100 MHz) VCXO

?4B
Pin 4

+0.18

Pin 5

+9.8

Pin 6

+o.o

25

E m i t t e r +10.3
Base

+9.8

Collector Gnd
26

E m i t t e r +10.3
Base

+9.8

Collector

-6.6

Phase Lock Detector @I
The output of the Lock Indicator Sampler is compared to a reference of -0.4 V by
comparator U5. The output of U5 is high for any unlocked condition. VRl limits the output
voltage (HULR) to approximately 4.64 V.
This can be checked by disconnecting the 10 MHz input at A7AlJl (gray/white cable) and
measuring the output of U5. With the loop unlocked (10 MHz removed), this output should
be approximately 4.64 V.

A7A1

7

HP Part Number 85660-60015
A7Al Reference Phase Detector

m
-

Description

5

1

BOARD ASSEMBLY, REFERENCE PHASE DETECTOR

28480

85660-60015

0180-0197
0180-0197
0180-1746
0160-3879
0140-0190

8
8
5
7
7

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 15UF+-10% ZOVDC TA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD 39PF +-5% 300VDC MICA

56289
56289
56289
04222
09023

150D225X9020A2-DYS
150D225X9020A2-DYS
150D156X9020B2-DYS
SR201C103MAAH
CD15ED390J03

A7AlC6
A7AlC7
A7AlC8
A7AlC9
A7AlClO

0160-3879
0160-2055
0180-3073
0160-3879
0160-2055

7
9
5
7
9

1
1
1
1
1

CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAP-FXD 2.2uF 30 V TA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% IOOVDC CER

04222

SR201C103MAAH
805-504 Y5V 1032
152D225X0030A2
SR201C103MAAH
805-504 Y5V 1032

A7AlCll
A7AlC12
A7AlC13
A7AlC14
A7AlC15

0180-0197
0160-2199
0180-0197
0160-2204
0180-0197

8
2
8
0
8

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 30PF +-5% 300VDC MICA
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FXD 1OOPF +-5% 300VDC MICA
CAPACITOR-FXD 2.2UF+-10% 20VDC TA

A7AlC16
A7AlC17
A7AlClB
A7AlC19
A7AlC20

0160-2055
0160-2055
0160-2055
0160-2055
0160-2055

9
9
9
9
9

1
1
1
1
1

CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF

1OOVDC
IOOVDC
1OOVDC
1OOVDC
1OOVDC

CER
CER
CER
CER
CER

805-504
805-504
805-504
805-504
805-504

Y5V
Y5V
Y5V
Y5V
Y5V

1032
1032
1032
1032
1032

A7AlC21
A7AlC22
A7AlC23
A7AlC24
A7AlC25

0160-2055
0160-2055
0180-0553
0160-2055
0160-2055

9
9
0
9
9

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20% 1OOVDC
CAPACITOR-FXD .OlUF +80-20% 1OOVDC
CAPACITOR-FXD 22UF+-20% 25VDC TA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC
CAPACITOR-FXD .OlUF +80-20% 1OOVDC

CER
CER

805-504 Y5V
805-504 Y5V
199D1117
805-504 Y5V
805-504 Y5V

1032
1032

A7AlC26
A7AlC27
A7AlC28
A7AlC29
A7AlC30

0160-2204
0140-0193
0180-0553
0160-2055
0140-0193

0
0
0
9
0

1
1
1
1
1

CAPACITOR-FXD 1OOPF +-5% 300VDC MICA
CAPACITOR-FXD 82PF +-5% 300VDC MICA
CAPACITOR-FXD 22UF+-20% 25VDC TA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 82PF +-5% 300VDC MICA

09023
09023
56289

A7AlC31
A7AlC32
A7AlC33
A7AlC34
A7AlC35

0180-1746
0170-0066
0160-2055
0160-2055
0140-0193

5
9
9
9
0

1
1
1
1
1

CAPACITOR-FXD 15UF+-10% POVDC TA
CAP-FXD 0.027uF 200 V POLYE-FL
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 82PF +-5% 300VDC MICA

56289
84411

A7AlC36
A7AlC37
A7AlC38
A7AlC39
A7AlC40

0160-2055
0160-2055
0140-0193
0160-3879
1180-1746

9
9
0
7
5

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 82PF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
:APACITOR-FXD 15UF+-10% 20VDC TA

A7AlC41
A7AlC42
A7AlC43
A7AlC44
A7AlC45

3160-2055
3160-2055
3160-2206
1160-2055
3160-2055

9
9
2
9
9

1
1
1
1
1

:APACITOR-FXD
:APACITOR-FXD
:APACITOR-FXD
:APACITOR-FXD
:APACITOR-FXD

A7AlC46

3140-0210

2

1

:APACITOR-FXD 270PF +-5% 300VDC MICA

HP Part
Number

C

A7Al

85660-60015

A7AlCl
A7AlC2
A7AlC3
A7AlC4
A7AlC5

Reference
Designation

D

.OlUF
.OlUF
160PF
.OlUF
.OlUF

+80-20%
+80-20%
+80-20%
+80-20%
+80-20%

Mfr
Code

CER
CER

+80-20% 1OOVDC CER
+80-20% 1OOVDC CER
+-5% 300VDC MICA
+80-20% 1OOVDC CER
+80-20% 1OOVDC CER

56289
04222

56289
09023
56289
09023
56289

56289

09023

Mfr Part
Number

1500225X9020A2-DYS
CD15ED300J03
150D225X9020A2-DYS
CD15FDlOlJ03
1500225X9020A2-DYS

1032
1032

CD15FDlOlJ03
CD15ED820J03
19901117
805-504 Y5V 1032
CD15ED820J03

09023

150D156X902062-DYS
HEW-238M
805-504 Y5V 1032
805-504 Y5V 1032
CD15ED820J03

09023
04222
56289

805-504 Y5V 1032
805-504 Y5V 1032
CD15ED820J03
SR201C103MAAH
150D156X9020B2-DYS

09023

805-504 Y5V
805-504 Y5V
CD15FD161JO3
805-504 Y5V
805-504 Y5V

09023

CD15FD271J03

1032
1032
1032
1032

-

*Indicates factory-selected value

85660-60015 Parts List
Page 1 of 5

HP Part Number 85660-60015
A7Al Reference Phase Detector
Reference
Designation

HP Part
Number

C
c

3t
-

Description

Mfr
Cod1 e

Mfr Pat-l
Number

0902 !3
0902 !3

805-504 Y5V 1032
CD15FD271J03
CD15ED510J03
805-504 Y5V 1032

A7AlC47
A7AlC48
A7AlC49
A7AlC50

0160-2055
0140-0210
0160-2201
0160-2055

I
L
i
c

1

1
1
1

CAPACITOR-FXO .OlUF +80-20% IOOVOC CER
CAPACITOR-FXD 270PF +-5% 300VDC MICA
CAPACITOR-FXD 51PF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER

A7AlC51
A7AlC52
A7AlC53
A7AlC54
A7AlC55

0140-0210
0160-2055
0160-2055
0180-0183
0180-1746

i
c
c
i
L

1
1
1
1
1

CAPACITOR-FXD 270PF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVOC CER
CAP-FXD 1OuF 50 V AL-ELCTLT
CAPACITOR-FXD 15UF+-10% ZOVDC TA

562E19
562E19

CD15FD271J03
805-504 Y5V 1032
805-504 Y~V 1032
30D106G050CB2-DSM
150D156X902082-DYS

A7AlC56
A7AlC57
A7AlC58
A7AlC59
A7AlC60

0180-0229
0160-2204
0160-3879
0160-3878
0160-3879

7
C
7
E
7

1
1
1
1
1

CAP-FXD 33uF 10 V TA
CAPACITOR-FXD 1OOPF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER

562619
0902'3
0422'2
0422'2
0422'2

150D336X901062-DYS
CD15FDlOlJ03
SR201C103MAAH
SR201C102MAAH
SR201C103MAAH

A7AlC61
A7AlC62
A7AlCRl
A7AlCR2
A7AlCR3

0160-3454
0160-3878
1901-0518
1901-0518
1901-0518

4
E
a
a
a

1
1
1
1
1

CAPACITOR-FXD 220PF +-lo% 1KVDC CER
CAP-FXD 1OOOpF 100 V
DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG

A7AlCR4
A7AlCR5
A7AlCR6
A7AlJl
A7AlJ3

1901-0518
1901-0518
1901-0518
1250-0544
1250-0544

a
a
a
9
9

1
1
1
1
1

DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM

9829 1
9829 1

5082-2800
5082-2800
5082-2800
051-049-0000-220
051-049-0000-220

A7AlJ4
A7AlJ5
A7AlJ6
A7AlLl
A7AlL2

1250-0544
1250-0544
1250-0544
3140-0238
3140-0238

9
9
9
3
3

1
1
1
1
1

CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 82UH +-5% .166D-INX.3
INDUCTOR RF-CH-MLD 82UH +-5% .166D-INX.3

9829 1
9829 1
9829 1
9980 0
9980 0

051-049-0000-220
051-049-0000-220
051-049-0000-220
1537-72
1537-72

A7AlL3
A7AlL4
A7AlL5
A7AlL6
A7AlL7

)140-0143
a140-0143
3100-2261
3140-0114
3100-2255

1
1
1
1
1

INDUCTOR RF-CH-MLD 3.3UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 3.3UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 2.7UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1OUH +-lo% .166D-INX.
INDUCTOR RF-CH-MLD 470NH +-lo% .105D-INX

9980 0
9980 0
9980 0
9980 0
2422 6

1025-32
1025-32
1025-30
1537-36
lOM470K

A7AlL8
A7AlL9
A7AlLlO
A7AlLll
A7AlL12

)lOO-0368
1100-2257
3100-2255
1100-2257
1100-2255

6
6
4
6
4

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

A7AlL13
A7AlL14
A7AlL15
A7AlL16
A7AlMPl

1100-2257
1100-2255
1100-2256
IlOO-2891

6
4
5
4

1
1
1
1

INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
NOT ASSIGNED

A7AlMP2
A7AlMP3
A7AlMP4
A7AlMP5

.205-0250
1190-0124
1200-0101
‘950-0078

3
4
3
3

1
1
1
1

THERMAL LINK SGL TO-5/TO-39-CS
IJASHER-LK INTL T NO. 10 .195-IN-ID
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
NUT-HEX-DEL-CHAM lo-32-THD .067-IN-THK

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

330NH
820NH
470NH
820NH
470NH

0422'2

838-546 X5E 221K
SR201C102MAAH
5082-2800
5082-2800
5082-2800

+-lo%
+-IO%
+-10x
+-lo%
+-lo%

.105D-INX
.105D-INX
.lOSD-INX
.105D-INX
.105D-INX

3215 9
3215 9
2422 6
3215 9
2422 6

lA-3303M +-lo%
1A 8203M +-lo%
lOM470K
1A 8203M +-lo%
lOM470K

820NH +-IO%
470NH +-lo%
560NH +-lo%
50NH +-lo%

.105D-INX
.lOSD-INX
.105D-INX
.105D-INX.

3215'9
2422 6
2422 6
2422 6

1A 8203M +-lo%
lOM470K
lOM560K
lOM050K-1

05828 0
9829 1
77251 0
7416.3

2604 TH SE
3002-26

-

8.5660-60015 Parts List
Page 2 of 5

0902 13

*Indicates factory-selected value

500220

HP Part Number 85660-60015
A7Al Reference Phase Detector
Reference
Designation

HP Part
Number

C
0

w
-

Mfr
Code

Description

Mfr Part
Number

A7AlMP7

8151-0013

4

1

WIRE 22AWG 1X22

92194

298

A7AlMP8
A7AlMP9
A7AlQl
A7AlQ2
A7AlQ3

85660-20045
86701-40001
1854-0019
1854-0019
1854-0019

7
9
3
3
3

1
1
1
1
1

CASTING, COVER
PC EXTRACTOR
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW

2848C
2848C
04713
04713
04713

85660-20045
86701-40001

A7AlQ4
A7AlQ5
A7AlQ6
A7AlQ7
A7AlRl

1855-0049
1853-0451
1853-0451
1853-0034
0757-0399

1
5
5
0
5

1
1
1
1
1

TRANSISTOR-JFET DUAL N-CHAN D-MODE SI PD
TRANSISTOR PNP 2N3799 SI TO-18 PO=360MW
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
TRANSISTOR PNP SI TO-18 PD=360MW
RESISTOR 82.5 +-1% .125W TF TC=O+-100

34677
04713
04713
04713
19701

SFR25H

A7AlR2
A7AlR3
A7AlR4
A7AlR5
A7AlR6

0757-0417
0757-0416
0757-0401
0698-3156
0757-0401

8
7
0
2
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

562 +-1%
511 +-1%
100 +-1%
14.7K 1%
100 +-1%

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR7
A7AlR8
A7AlR9
A7AlRlO
A7AlRll

0757-0420
0757-0438
0757-0399
0698-7222
0698-7219

3
3
5
1
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

750 +-I% .125W TF TC=O+-100
5.11K +-I% .125W TF TC=O+-100
82.5 +-1% .125W TF TC=O+-100
261 +-1% .05W TF TC=O+-100
196 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635
50635

A7AlR12
A7AlR13
A7AlR14
A7AlR15
A7AlR16

0757-0442
0698-3453
3757-0442
3698-3453
3757-0441

9
2
9
2
8

1
1
1
1
1

7ESISTOR
iESISTOR
?ESISTOR
?ESISTOR
?ESISTOR

10K +-1% .125W TF TC=O+-100
196K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
196K 1% .125W TF TC=O+-100
8.25K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR17
A7AlR18
A7AlR19
A7AlR20
A7AlR21

3698-3438
3757-0346
1757-0346
0757-0441
0698-3438

3
2
2
8
3

1
1
1
1
1

?ESISTOR
7ESISTOR
IESISTOR
RESISTOR
RESISTOR

147 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
8.25K +-1% .125W TF TC=O+-100
147 1% .125W TF TC=O+-100

19701
91637
91637
19701
19701

SFR25H
CMF-55-1, T-l
CMF-55-1, T-l
SFR25H
SFR25H

A7AlR22
A7AlR23
A7AlR24
A7AlR25
A7AlR26

0698-3136
0757-0346
0698-3154
0757-0346
0757-0280

8
2
0
2
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

17.8K 1% .125W
10 +-1% .125W
4.22K 1% .125W
10 +-1% .125W
1K +-1% .125W

19701
91637
19701
91637
19701

SFR25H
CMF-55-1, T-l
SFR25H
CMF-55-1, T-l
SFR25H

A7AlR27
A7AlR28
A7AlR29
A7AlR30
A7AlR31

0698-3154
0698-3450
0698-3449
0757-0444
0698-3154

0
9
6
1
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

4.22K
42.2K
28.7K
12.1K
4.22K

1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR32
A7AlR33
A7AlR34
A7AlR35
A7AlR36

0757-0346
0698-3154
0757-0346
0757-0280
0757-0444

1
1
1
1
1

RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 4.22K 1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
?ESISTOR 1K +-1% .125W TF TC=O+-100
?ESISTOR 12.1K +-1% .125W TF TC=O+-100

91637
19701
91637
19701
19701

CMF-55-l. T-l
SFR25H
CMF-55-l. T-l
SFR25H
SFR25H

A7AlR37

3757-0200

1

?ESISTOR 5.62K +-1% .125W TF TC=O+-100

19701

SFR25H

.125W
.125W
.125W
.125W
.125W

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

-

*Indicates factory-selected value

85660-60015 Parts List
Page 3 of 5

HP Part Number 85660-60015
A7Al Reference Phase Detector
-

Reference
Designation

HP Part
Number

C
c

Description

lit:

Mfr
Code

Mfr Part
Number

A7AlR38
A7AlR39
A7AlR40
A7AlR41

0757-0421
0757-0440
0757-0394
0698-3446

L
i
c
:

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

825 +-1% .125W TF TC=O+-100
7.5K +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100
383 1% .125W TF TC=O+-100

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

A7AlR42
A7AlR43
A7AlR44
A7AlR45
A7AlR46

0698-0085
0757-0442
0757-0442
0757-0280
0698-3154

c
c
5
3
c

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.61K 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR47
A7AlR48
A7AlR49
A7AlR50
A7AlR51

0698-3453
0757-0442
0698-7285
D698-3157
3698-3157

2
3
3

1
1
1
1
1

RESISTOR
RESISTOR
?ESISTOR
?ESISTOR
?ESISTOR

196K 1% .125W
IOK +-1% .125W
1lOK +-1% .05W
19.6K 1% .125W
19.6K 1% .125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
5023R
SFR25H
SFR25H

A7AlR52
A7AlR53
A7AlR54
A7AlR55
A7AlR56

3757-0401
3698-3440
3698-7234
3698-7257
3757-0394

a
7
5
2
0

1
1
1
1
1

?ESISTOR
7ESISTOR
ZESISTOR
iESISTOR
?ESISTOR

100 +-1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
825 +-1% .05W TF TC=O+-100
7.5K +-1% .05W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
SFR25H

A7AlR57
A7AlR58
A7AlR59
A7AlR61
A7AlR62

3698-3446
3698-7246
3698-3440
3757-0280
3757-0278

3
9
7
3
9

1
1
1
1
1

?ESISTOR
?ESISTOR
?ESISTOR
7ESISTOR
{ESISTOR

383 1% .125W TF TC=O+-100
2.61K +-1% .05W TF TC=O+-100
196 1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
1.78K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

A7AlR63
A7AlR64
A7AlR65
A7AlR66
A7AlR67

1698-0085
1698-3132
1698-0085
1757-0421
1757-0280

0
4
0
4
3

1
1
1
1
1

?ESISTOR
IESISTOR
ZESISTOR
{ESISTOR
{ESISTOR

2.61K 1% .125W TF TC=O+-100
261 1% .125W TF TC=O+-100
2.61K 1% .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR68
A7AlR69
A7AlR70
A7AlR71
A7AlR72

1757-0416
1757-0416
1757-0416
1757-0274
1698-3132

7
7
7
5
4

1
1
1
1
1

{ESISTOR
CESISTOR
(ESISTOR
tESISTOR
CESISTOR

511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
1.21K +-1% .125W TF TC=O+-100
261 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A7AlR73
A7AlR74
A7AlR75
A7AlTl
A7AlT2

1757-0317
1757-0289
1698-7236
18552-6044
18552-6044

7
2
7
1
1

1
1
1
1
1

lESISTOR 1.33K +-1% .125W TF TC=O+-100
lESISTOR 13.3K +-1% .125W TF TC=O+-100
[ESISTOR 1K +-1% .05W TF TC=O+-100
-RANSFORMER, RF 5-PIN
-RANSFORMER, RF 5-PIN

19701
19701
19701
28480
28480

SFR25H
SFR25H
50635
08552-6044
08552-6044

A7AlTPl
A7AlUl
A7AlU2
A7AlU3
A7AlU4

.251-0600
.858-0032
.820-0328
.820-1383
.820-0802

0
3
6
5
1

1
1
1
1
1

:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
'RANSISTOR ARRAY 14-PIN PLSTC DIP
:C GATE TTL NOR QUAD 2-INP
:C CNTR ECL BCD POS-EDGE-TRIG
'C GATE ECL NOR QUAD 2-INP

27264
27014
01295
04713
04713

16-06-0034
LM3146
SN7402N
MC10138L
MC10102P

A7AlU5
A7AlU6
A7AlVRl
A7AlVR2

820-0223
820-0429
902-3082
902-3256

3
3
3
3

1
1
1
1

C OP AMP GP TO-99
C V RGLTR-FXD-POS
IIODE-ZNR 4.64V 5%
bIODE-ZNR 23.7V 5%

27014
27014
04713
04713

LM301AH
LM309H

9
E

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

PKG
4.8/5.2V TO-39 PKG
DO-35 PD=.4W
DO-35 PD=.4W

-

85660-60015 Parts List
Page 4 of 5

*Zndicates factory-selected value

HP Part Number 85660-60015
A7Al Reference Phase Detector
Reference
Designation
A7AlWl

HP Part
Number
15660-60084

Description
CABLE ASSEMBLY, GRAY/ORANGE
(INCLUDES 52)

*Indicates factory-selected value

Mfr
Code
28480

Mfr Part
Number
85660-60084

85660-60015 Parts List
Page 5 of 5

I-

E-l l$j fg
DEC

I

I

P.3

II

/

u3

1::11::1-

c;

11

u

II

-1

E, ”I

’

u

N

A7A2
A7A2 100 MHz Voltage-Controlled Crystal Oscillator (VCXO),
Circuit Description
A7A2 consists of a 100 MHz voltage-controlled crystal oscillator, buffer amplifiers, and a
frequency quadrupler. In conjunction with A7Al Reference Phase Detector, it forms the
reference phase-lock loop. Outputs of 100 MHz and 400 MHz are used as frequency references
by other assemblies in the instrument.

100 MHz Oscillator @
Q5 functions as a common-base amplifier with feedback to form an oscillator. The
feedback includes the 100 MHz crystal Yl and varactor CR1 which are the principal
frequency-determining components. CR1 is tuned by the output of A7Al and can vary the
frequency by approximately fl kHz. The amplitude of the oscillations is limited by CR3 and
CR4. TPl is accessible from the top cover; the voltage should be near -8 V dc for proper
operation. The voltage is adjusted by tuning the oscillator with C4.

100 MHz Buffer Amplifier @
QS, Q7, QS, Q9, and Qll form a series of 100 MHz amplifiers. They buffer the 100 MHz
outputs from each other as well as from the oscillator.

Quadrupler @
100 MHz from Q7 in @J is applied to T3. The secondary of T3 is connected to Q3 and Q4 to
form a full-wave rectifier. Positive half cycles of 100 MHz to T3 turn on Q3 while negative
half cycles turn on Q4. The collectors are connected together to sum the currents and produce
even harmonics of 100 MHz. The output is tuned to 400 MHz by C3 and LlO to select
400 MHz.

400 MHz Amplifier @
Ql and Q2 are two common-emitter tuned amplifier stages which amplify 400 MHz and filter
undesired harmonics of 100 MHz. R67, R68, and R69 form a pad which is selected to give
-10 dBm f2 dB output at 400 MHz.

A7A2 1

A7A2 100 MHz VCXO, Troubleshooting
The 100 MHz VCXO supplies all of the fixed reference frequencies for the HP 8566B. Separate
100 MHz outputs are routed to the A6A9, AlOA4, and A7Al assemblies. A 400 MHz signal is
applied to the A7A3 assembly. The A7Al assembly divides the 100 MHz input to provide 10
MHz and 20 MHz references.

100 MHz Oscillator @
The tune voltage at A7A2TPl is nominally -8 V. If an unlocked condition exists, this voltage
is either -23 V or -1.3 V. If the level is -23 V, check the 10 MHz reference to A7Al. If the
level is -1.3 V, check the outputs of the 100 MHz Buffer/Amplifier.
Typical voltage levels for the oscillator transistor Q5 are:
Emitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-12.8V
-11.9V
..O.O V

100 MHz Buffer/Amplifier @I
All 100 MHz output levels should be approximately 0 dBm. Typical voltage levels for each
transistor are as shown in Table 1.
Table 1. 100 MHz Buffer/Amplifier Voltage Levels

Q6 Q7 Qll
Emitter

4.0 3.9 3.9

Base

4.7 4.7 4.6

Collector 9.3 9.4 9.4

Quadrupler @ and 400 MHz Amplifier @I
Typical voltage levels for the Quadrupler and 400 MHz Amplifier are as shown in Table 2.
The 400 MHz Amplifier output at A7A2Jl (96 cable) is approximately -10 dBm when the
A7A2 100 MHz board assembly is in the casting.
Table 2. Quadrupler and 400 MHz Amplifier Voltage Levels
Q3

A7A2

Ql

Q3

Emitter

-4.6 -5.1 -6.6 -6.6

Base

-5.9 -5.9 -5.9 -5.9

Collector

2

Q4

0.0

0.0

0.0

0.0

HP Part Number 85660-60135
A7A2 100 MHz VCXO
Reference
Designation

HP Part C
Number D Qty

A7A2

85660-60135

A7A2Cl
A7A2C2
A7A2C3
A7A2C4
A7A2C5

0121-0495
0121-0495
0121-0495
0121-0493
0180-0049

A7A2C6
A7A2C7
A7A2C8*
A7A2C9
A7A2ClO

0

Mfr
Code

Description

Mfr Part
Number

1

BOARD ASSEMBLY, 100 MHZ VOLTAGECONTROLLED CRYSTAL OSCILLATOR (VCXO)

28480

85660-60135

5
5
5
3
9

1
1
1
1
1

CAPACITOR-V TRMR-AIR 1.9-15.7PF 175V
CAPACITOR-V TRMR-AIR 1.9-15.7PF 175V
CAPACITOR-V TRMR-AIR 1.9-15.7PF 175V
CAPACITOR-V TRMR-AIR 1.7-1lPF 175V PC-MT
CAP-FXD 2OuF 50 V AL-ELCTLT

74970
74970
74970
74970
56289

187-0309-125
187-0309-125
187-0309-125
187-0306-125
30D206G050CC2-DSM

0160-3456
0160-3454
0160-2251
0160-4084
0140-0191

6
4
7
8
8

1
1
1
1
1

CAPACITOR-FXD 1OOOPF +-lo% IKVDC CER
CAPACITOR-FXD 220PF +-lo% 1KVDC CER
CAP-FXD 5.6pF 500 V
CAP-FXD O.luF 50 V
CAP-FXD 56pF 300 V MICA

A7A2Cll
A7A2C12
A7A2C13
A7A2C14
A7A2C15

0160-2204
0160-3454
0160-3454
0160-3454
0160-2261

0
4
4
4
9

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

1OOPF +-5% 300VDC MICA
220PF +-lo% 1KVDC CER
220PF +-lo% 1KVDC CER
220PF +-lo% 1KVDC CER
15PF +-5% 500VDC CER 0+-30

A7A2C16
A7A2C17
A7A2C18
A7A2C19
A7A2C20

0160-2261
0160-3454
0160-3454
0160-2261
0160-2261

9
4
4
9
9

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

15PF +-5% SOOVDC CER 0+-30
220PF +-lo% 1KVDC CER
220PF +-IO% 1KVDC CER
15PF +-5% 500VDC CER 0+-30
15PF +-5% 500VDC CER 0+-30

A7A2C21
A7A2C22
A7A2C23
A7A2C24
A7A2C25

0160-3454
0160-3454
0160-3454
0160-3454
0160-3454

4
4
4
4
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

220PF
220PF
220PF
220PF
220PF

A7A2C26
A7A2C27
A7A2C28
A7A2C29
A7A2C30

0160-2261
0160-2261
0160-3872
0160-3872
0160-3454

9
9
0
0
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD 2.2pF
CAP-FXD 2.2pF
CAPACITOR-FXD

15PF +-5% 500VDC CER 0+-30
15PF +-5% 500VDC CER 0+-30
200 V
200 V
220PF +-lo% 1KVDC CER

A7A2C31
A7A2C32
A7A2C33
A7A2C34
A7A2C35

0160-3454
0160-2261
0160-2261
0160-3454
0160-3454

4
9
9
4
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

220PF +-lo% 1KVDC CER
15PF +-5% 500VDC CER 0+-30
15PF +-5% 500VDC CER 0+-30
220PF +-lo% 1KVDC CER
220PF +-lo% 1KVDC CER

A7A2C36
A7A2C37
A7A2C38
A7A2C39
A7A2C40

0160-3878
0160-3878
0160-3878
0160-3454
0160-2238

6
6
6
4
0

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 220PF +-IO% 1KVDC CER
CAP-FXD 1.5pF 500 V

04222
04222
04222

A7A2C42
A7A2C43
A7A2C44
47A2C46
47A2C47

0160-3878
0180-0116
0160-2253
0160-3878
0160-3454

6
1
9
6
4

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAP-FXD 6.8pF 500 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 220PF +-lo% 1KVDC CER

04222
56289
52763
04222

+-10x
+-lo%
+-IO%
+-lo%
+-lo%

1KVDC
1KVDC
1KVDC
1KVDC
1KVDC

52763
56289
09023
09023

52763
52763

52763
52763

CER
CER
CER
CER
CER

*Indicates factory-selected value

808-542 X5E 102K
838-546 X5E 221K
lC20X7R104M050B
CD15ED560J03
CD15FDlOlJ03
838-546 X5E 221K
838-546 XSE 221K
838-546 X5E 221K
2RDPLX05015RNPO
2RDPLX05015RNPO
838-546 X5E 221K
838-546 X5E 221K
2RDPLX05015RNPO
2RDPLX05015RNPO
838-546
838-546
838-546
838-546
838-546

52763
52763

52763
52763

X5E
X5E
XSE
X5E
X5E

221K
221K
221K
221K
221K

2RDPLX05015RNPO
2RDPLX05015RNPO
FD12COG2D2R2C
FD12COG202R2C
838-546 X5E 221K
838-546 X5E 221K
2RDPLX05015RNPO
2RDPLX05015RNPO
838-546 X5E 221K
838-546 X5E 221K
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
838-546 X5E 221K

52763
SR201C102MAAH
150D685X9035B2-DYS
SR201C102MAAH
838-546 X5E 221K

85660-60135 Parts List
Page 1 of 4

HP Part Number 85660-60135
A7A2 100 MHz VCXO
-

Reference
DesignationI

HP Part
Number

C
c

3t:

Mfr
Code

Description

Mfr Part
Number

A7A2C48
A7A2C49
A7A2C50
A7A2C51
A7A2C52

(1160-3456
(1160-3456
()180-0116
(1160-4299
(1160-3456

A7A2C53
A7A2C54
A7A2C55
A7A2C56
A7A2CRl

t
t

f

1
1
1
1
1

CAPACITOR-FXD 1OOOPF +-lo% 1KVDC CER
CAPACITOR-FXD 1OOOPF +-lo% 1KVDC CER
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 2200PF +-20% 250VDC CER
CAPACITOR-FXD 1OOOPF +-lo% 1KVDC CER

(1160-3456
(1160-3454
(1160-3454
I1160-2437
c1122-0245

E
4
4
1
r:

1
1
1
1
1

CAPACITOR-FXD 1OOOPF +-IO% 1KVDC CER
CAPACITOR-FXD 220PF +-lo% 1KVDC CER
CAPACITOR-FXD 220PF +-IO% 1KVDC CER
CAPACITOR-FDTHRIJ 5000PF +80 -20% 200V
DIODE-VVC lN5139 6.8PF 10%

33095
04713

808-542 X5E 102K
838-546 X5E 221K
838-546 X5E 221K
54-713-033-X5V-5022
IN5139

A7A2CR3
A7A2CR4
A7A2El
A7A2J2
A7A2J3

1.901-0539
1 901-0539
51170-0029
1 250-0544
1 250-0544

3
3
3
9
9

1
1
1
1
1

DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG
CORE-SHIELDING BEAD
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM

02114
98291
98291

56-590-65A2/4A
051-049-0000-220
051-049-0000-220

A7A2J4
A7A2L2
A7A2L3
A7A2L4*
A7A2L5

1 250-0544
91100-2250
91140-0158
91100-2254
9 loo-2538

9
9
6
3
6

1
1
1
1
1

CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 180NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1UH +-lo% .105D-INX.2
INDUCTOR RF-CH-ML0 390NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1UH +-lo% .161D-INX.4

98291
24226
32159
24226
24226

051-049-0000-220
lOM180K
lA1002M +-lo%
lOM390K
17SlOlK

A7A2L6
A7A2L7
A7A2L8
A7A2L9
A7A2L14

9 loo-2251
9 loo-2251
9 100-2251
9 loo-2251
9 loo-2247

0
0
0
0
4

1
1
1
1
1

INDUCTOR RF-CH-MLD 220NH +-lo%
INDUCTOR RF-CH-MLD 220NH +-IO%
TNDUCTOR RF-CH-MLD 220NH +-lo%
INDUCTOR RF-CH-MLD 220NH +-lo%
[NDUCTOR RF-CH-MLD 1OONH +-lo%

.105D-INX
.105D-INX
.105D-INX
.105D-INX
.105D-INX

24226
24226
24226
24226
24226

lOM220K
lOM220K
lOM220K
lOM220K
1OMlOOK

A7A2L15
A7A2L16
A7A2L17
A7A2L18
A7A2L19

9 loo-2248
9 140-0158
9 140-0158
9 140-0144
9 140-0144

5
6
6
0
0

1
1
1
1
1

[NDUCTOR RF-CH-MLD 120NH +-lo% .105D-INX
[NDUCTOR RF-CH-MLD 1UH +-10X .105D-INX.2
INDUCTOR RF-CH-MLD 1UH +-lo% .105D-INX.2
[NDUCTDR RF-CH-MLD 4.7UH +-10X .105D-INX
[NDUCTOR RF-CH-MLD 4.7UH +-IO% .lOSD-INX

24226
32159
32159
99800
99800

lOM120K
lA1002M +-lo%
lA1002M +-lo%
1025-36
1025-36

A7A2MPl
A7A2MP3
A7A2MP4
A7A2MP5
A7A2MP6

2 190-0009
2 190-0124
2 200-0101
2 580-0002

4
4
0
4

1
1
1
1

IOT ASSIGNED
JASHER-LK INTL T NO. 8 .168-IN-ID
JASHER-LK INTL T ND. 10 .195-IN-ID
iCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
IUT-HEX-DEL-CHAM 8-32-THD .085-IN-THK

OG791
98291
77250
80120

820-BC
3002-26

A7A2MP7
A7A2MP9
A7A2MPlO
A7A2MPll
A7A2MP12

2 950-0078
8 151-0013
8 5660-20046
8 6701-40001
8 6701-00045

3
4
3
3
7

1
1
1
1
1

IUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
/IRE 22AWG 1X22
:ASTING COVER
:XTRACTDR PC
;HIELD

74163
92194
28480
28480
28480

500220
298
85660-20046
86701-40001
86701-00045

A7A2MP13
A7A2MP14
A7A2Ql
A7A2Q2
A7A2Q3

3'050-0929
0.340-0177
1; 354-0345
1; 554-0345
1; 354-0345

7
1
3
3
3

1
1
1
1
1

IASHER-FL NM l/4 IN .263-IN-ID
NSULATOR-BSHG NYLON
.RANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
'RANSISTOR NPN 2N5179 SI TO-72 PD=200MW
RANSISTOR NPN 2N5179 SI TO-72 PD=200MW

86928
89663
04713
04713
04713

5610-72-10

A7A2Q4
A7A2Q5
A7A2Q6

11354-0345
l(354-0247
II354-0345

3
3
3

1
1
1

RANSISTOR NPN 2N5179 SI TO-72 PD=200MW
RANSISTOR NPN SI TO-39 PD=lW FT=800MHZ
RANSISTDR NPN 2N5179 SI TO-72 PD=200MW

04713
04713
04713

1

i

-

85660-60135 Parts List
Page 2 of 4

*Indicates factory-selected value

56289

808-542 X5E 102K
808-542 X5E 102K
150D685X9035B2-DYS
808(2KV) X5R 222M
808-542 X5E 102K

2N5179
2N5179
2N5179
2N5179
2N5179

HP Part Number 85660-60135
A7A2 100 MHz VCXO
-

Reference
Designation:

HP Part
Number

Description

at]

Mfr
Code

Mfr Part
Number

AJA2QJ
AJA2Q8

1854-0345
1854-0345

1
1

TRANSISTOR NPN 2N5179 SI TO-72 PO=200MW
TRANSISTOR NPN 2N5179 SI TO-72 PO=200MW

04713
04713

2N5179
2N5179

AJA2Q9
AJA2QlO
AJA2Qll
AJA2Rl
AJA2R2

1854-0345
1854-0404
1854-0345
0757-0279
0757-0419

I
(
t
(
(

1
1
1
1
1

TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN 2N5179 SI TO-72 PD=EOOMW
RESISTOR 3.16K +-1% .125W TF TC=O+-100
RESISTOR 681 +-1% .125W TF TC=O+-100

04713
04713
04713
19701
19701

2N5179
2N5179
SFR25H
SFR25H

AJA2R3*
AJA2R4
AJA2R5
AJA2R6
AJA2RJ

0698-3444
0757-0422
0698-3155
0698-7224
0757-0346

1
r

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
909 +-1% .125W TF TC=O+-100
4.64K 1% .125W TF TC=O+-100
316 +-1% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
91637

SFR25H
SFR25H
SFR25H
50635
CMF-55-1, T-l

AJA2R8
AJA2R9
AJA2RlO
AJA2Rll
AJA2R12

0757-0422
0757-0442
0757-0401
0757-0394
0757-0416

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

909 +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
51.1 +-I% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R13
AJA2R14
AJA2R15
AJA2R16
AJA2RlJ

0757-0394
0757-0416
0757-0422
0757-0401
0698-3150

1
1
1
1
1

RESISTOR 51.1 +-1% .125W TF TC=O+-100
RESISTOR 511 +-I% .125W TF TC=O+-100
RESISTOR 909 +-1% .125W TF TC=O+-100
RESISTOR 100 +-1% .125W TF TC=O+-100
RESISTOR 2.3JK 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R18
AJA2R19
AJA2R20
AJA2R21
AJA2R22

0698-3150
0698-7198
0698-3443
0698-3429
0698-3443

1
1
1
1
1

RESISTOR 2.3JK 1% .125W TF TC=O+-100
RESISTOR 26.1 +-I% .05W TF TC=O+-100
RESISTOR 287 1% .125W TF TC=O+-100
RESISTOR 19.6 1% .125W TF TC=O+-100
?ESISTOR 287 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AJA2R23
AJA2R24
AJA2R25
AJA2R26
AJA2R27

D698-3150
3757-0401
3698-3150
3757-0416
3757-0346

1
1
1
1
1

7ESISTOR
7ESISTOR
7ESISTOR
?ESISTOR
?ESISTOR

2.3JK 1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
2.3JK 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
91637

SFR25H
SFR25H
SFR25H
SFR25H
CMF-55-1, T-l

AJA2R28
AJA2R29
AJA2R30
AJA2R31
AJA2R32

3757-0422
3698-7198
3698-3443
1698-3429
1698-3443

5

1
1
1
1
1

?ESISTOR
7ESISTOR
IESISTOR
IESISTOR
?ESISTOR

909 +-1% .125W TF TC=O+-100
26.1 +-1% .05W TF TC=O+-100
287 1% .125W TF TC=O+-100
19.6 1% .125W TF TC=O+-100
287 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AJA2R33
AJA2R34
AJA2R35
AJA2R36
AJA2R37

1698-3443
1698-3429
1698-7223
1698-3150
1757-0422

I

1
1
1
1
1

?ESISTOR
{ESISTOR
IESISTOR
{ESISTOR
1ESISTOR

287 1% .125W TF TC=O+-100
19.6 1% .125W TF TC=O+-100
287 +-1% .05W TF TC=O+-100
2.3JK 1% .125W TF TC=O+-100
909 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
SFR25H
SFR25H

AJA2R38
AJA2R39
AJA2R40
AJA2R41
AJA2R42

)?5?-0401
1698-3150
1757-0416
1757-0394
1698-0084

1

1
1
1
1
1

{ESISTOR
tESISTOR
{ESISTOR
{ESISTOR
tESISTOR

100 +-1% .125W TF TC=O+-100
2.3JK 1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

1
:
i
r
c
t
t
i

[
7
c
c
E

I
!
3
I
?

3
3
>
I

,
>
5
i

;
I
1
1

-

*Indicates factory-selected value

85660-6013.5 Parts List
Page 3 of 4

HP Part Number 85660-60135
A7A2 100 MHz VCXO
-

Reference
Designation

HP Part
Number

C
c

Description

;It:

Mfr
Code

Mfr Part
Number

AJA2R43
AJA2R44
AJA2R45
AJA2R46
AJA2R47

0698-3155
0698-0084
0698-0084
0757-0279
0757-0439

I
E
s
(
4

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

4.64K
2.15K
2.15K
3.16K
6.81K

1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R48
AJA2R49
AJA2R50
AJA2R51
AJA2R52

0757-0416
0757-0279
0757-0439
0757-0416
0757-0280

7
c
4
7
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
3.16K +-1% .125W TF TC=O+-100
6.81K +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R53
AJA2R54
AJA2R55
AJA2R56
AJA2R57

0757-0394
0757-0394
0757-0422
0698-3150
0757-0401

C
C
E
i
C

1
1
1
1
1

RESISTOR 51.1 +-1% .125W TF TC=O+-100
RESISTOR 51.1 +-1% .125W TF TC=O+-100
RESISTOR 909 +-I% .125W TF TC=O+-100
RESISTOR 2.3JK 1% .125W TF TC=O+-100
RESISTOR 100 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R58
AJA2R59
AJA2R60
AJA2R61
AJA2R62

0757-0401
D698-3150
3757-0280
3757-0397
3757-0401

C
6
3
3
0

1
1
1
1
1

RESISTOR
?ESISTOR
?ESISTOR
?ESISTOR
?ESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AJA2R6?*
AJA2R68*
AJA2R69”
AJA2Tl
AJA2T2

3698-3437
3698-4037
3698-3437
38553-6012
38553-6012

2
0
2
5
5

1
1
1
1
1

7ESISTOR 133 1% .125W TF TC=O+-100
?ESISTOR 46.4 1% .125W TF TC=O+-100
7ESISTOR 133 1% .125W TF TC=O+-100
TRANSFORMER
TRANSFORMER

19701
19701
19701
28480
28480

SFR25H
SFR25H
SFR25H
08553-6012
08553-6012

AJA2T3
AJA2TP2
AJA2TP3
AJA2TP4
AJA2Wl

38553-6012
1251-0600
1251-0600
1251-0600
35660-60082

5
0
0
0
6

1
1
1
1
1

TRANSFORMER
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ABLE ASSEMBLY, WHITE/BLUE
(INCLUDES Jl)

28480
27264
27264
27264
28480

08553-6012
16-06-0034
16-06-0034
16-06-0034
85660-60082

AJA2Yl

1410-1086

5

1

:RYSTAL-QUARTZ 100 MHZ HC-35/U-HLDR

00809

100 +-1% .125W TF TC=O+-100
2.3JK 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
68.1 +-I% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

-

85660-60135 Parts List
Page 4 of 4

*Indicates factory-selected value

/

100 MHz
OUT

400 MHz
OUT
A

TUNE

1

16

-lOVF

PI
2

15
30

i(
+2ovF

A7A2 100 MHz VCXO Component Locations, 85660-60135

A7A3
A7A3 M/N Phase Detector, Circuit Description
The M/N phase detector has two programmable frequency dividers: an M divider and an
N divider. M and N are integer numbers which give the ratio of divider input frequency to
divider output frequency. This is the divide number. The input to the N divider is 20 MHz;
the M divider input is the difference frequency between the M/N VCO (355 to 395 MHz) and
400 MHz. The two divider outputs are compared in a phase/frequency detector. The detector
output is amplified and applied to A7A4 M/N Output where it is used to tune the M/N VCO.
In general, the M/N output frequency (from A7A4) is (200 to 10 M/N) MHz. The M/N VCO
frequency is twice the M/N output frequency. The spectrum analyzer frequency diagnostics
(displayed by (SHIFT) [MKR~REF LVL)) show the M number, N number, and M/N frequency.
The fifth line of diagnostics contains three integers; the second integer is the M number, and
the third integer is the N number. The next (sixth) diagnostic line gives the M/N output
frequency in MHz (177.5 MHz to 197.5 MHz).

TTL + ECL Level Translators @
The numbers to program the frequency dividers come from Al2 Front-Panel Interface in
binary at TTL levels. U3, U13, and U17 shift these to ECL levels which are approximately
-0.9 V logic high and -1.7 V logic low. Nl and Ml designate the least significant bits.

N Divider @ and M Divider @
The M and N dividers are virtually identical. Basically, the four most significant bits of N
(three bits for M) N3, N4, N5, N6 load a counter U6. It counts down to two and is reloaded
on the next clock pulse. The two least significant bits, Nl and N2, control pulse swallowing
logic which causes the counter to count down to 1 instead of 2 before reloading. The logic
determines the proper number of extra pulses to be swallowed to effect the proper divide
number.
For troubleshooting, it is helpful to set the M and N numbers equal in a 1 MHz span using the
frequency diagnostics explained above. Waveforms at corresponding points in the two dividers
can then be compared to pinpoint the problem.

Mixer @)
Q3 is an amplifier which drives the LO port of the mixer Q24. It supplies about +5 dBm over
the 355 to 395 MHz range. The output of the mixer is the difference between 400 MHz and
the M/N VCO frequency which gives an IF frequency between 5 and 45 MHz. The IF level is
about -17 dBm.

A7A3 1

IF Amplifier @
The 60 MHz low-pass filter rejects unwanted mixing products from the mixer. Q4 and
U18B amplify and limit the IF signal and give it the proper levels to run the following ECL
circuitry.

Phase/Frequency Detector @
The outputs of M and N dividers are compared in Ul. When they are in phase, the outputs
of Ul are narrow, coincident pulses. For unlock conditions, the output pulses are of varying
widths.

Preamplifier @
Ql and Q2 are a low-noise differential pair preamplifier. Their outputs are combined in the
integrating amplifier of A7A4.

Phase Lock Indicator @
U2A and U2B are voltage comparators which compare each tune line to the average plus a
small offset provided by R29. If the loop unlocks, one of the preamplifier outputs is higher
than the comparison voltage, and the phase lock indicator goes high, indicating the unlock
condition.

A7A3 M/N Phase Detector, Troubleshooting
The A7A3 M/N Phase Detector mixes the A7A4 M/N VCO output (355 to 395 MHz) with
400 MHz from the A7A2 100 MHz VCXO. The product of this mixing and the 20 MHz
reference from the A7Al are then divided by the M and N dividers respectively, and their
resultant outputs are compared by a phase/frequency detector. The phase error is used to
tune the A7A4 VCO.
The two dividers (M and N) are identical in operation and their waveforms can be compared
for troubleshooting purposes. The M and N numbers can be set to the same value and various
test points within each divider compared to reveal a malfunction, providing one of the dividers
is known to be operating properly.

M Divider @ and N Divider @
To display the M and N divide numbers on the HP 8566B CRT, key in the following settings:

@TGGGHz)
(Gii?Tj (MKR*REF

LEVEL)

(KSR)

(-1 [BW) (KSF)
[FREQUENCYSPAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(CENTERFREQUENCY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0 Hz

3.77GIIZ

SWEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...(~)
The third line of the diagnostic (KSR) should read as follows:
1 20 20
2 A7A3

The second and third numbers are the M and N divide numbers respectively. The waveform
at test points 3 and 7, 5 and 6, and 1 and 2 should be as shown in Figures 1, 2, and 3
respectively. The Center Frequencies for Figure la, lb, lc, and Id are 3.77 GHz, 3.96
GHz, 4.15 GHz, and 4.34 GHz respectively. The M and N numbers are 20, 21, 22, and 23
respectively.
Oscilloscope control settings for Figure 1, Figure 2, and Figure 3 are:
Vertical: 0.1 V/Div
Horizontal: 0.2 psec/Div
Probe: 1O:l

Note
!iil

Note

Waveforms on the M Divider 0 require the M/N VCO be phase-locked at 380
MHz. If the M/N VCO is not phase-locked, an external signal generator may
be used to locate the failure.
All waveform voltage levels are emitter coupled logic (ECL) levels:
-0.9 V = high, -1.7 V = low.

3

Mixer (EJ and IF Amplifier @
The Mixer inputs are 400 MHz from A7A2 100 MHz VCXO and 355 to 395 MHz from A7A4
M/N Output. When the M and N numbers are the same, the M/N output frequency is
380 MHz.

A7A3

3

L E V E L S = E C L LOW=-1.7V

D U T Y CYCLE<1/3

TP3

TP7

I

I

I

I

I

T

I

I

I

I

T

I

a. M o r N N u m b e r s 8,12,16,20,
24,28, o r 3 2

b . M o r N N u m b e r s 9,13,17,21,
25,
or
29

D U T Y C Y C L E l/2

D U T Y CYCLE>2/3

111..

a.
I

TP3

II

I

II

II

II

++

II

II

II

II

I

I

II

I

I

II

II

1I

f

1

I

I

II

+

I

I

II

I

I

I

TP7

I

I

I

I

I

t

I

I

I

I

c . M o r N N u m b e r s 10,14,18,22,
26,
or
30

I

I

I

I

I

d . M o r N N u m b e r s 11,15,19,23,
27,
or
31

Figure 1. M and N Divider Waveforms for Test Points 3 and 7

4 A7A3

I

I

Figure 2. M and N Divider Waveforms for Test Points 5 and 6

Figure 3. M and N Divider Waveforms for Test Points 1 and 2
The output of the IF Amplifier at U18 Pin 3 is at ECL logic levels: -0.9 V = high,
-1.7 V = low. Typical voltage levels for Q3 and Q4 are shown in Table 1.
Table 1. IF Amplifier Voltage Levels
Voltage Levels
Q3

Q4

Emitter

-5.6

-7.4

Base

-4.8

-6.6

0

-1.9

Collector

A7A3

5

Phase Frequency Detector @ and Preamplifier @
The Phase/Frequency Detector outputs pulses whose width is proportional to the phase
difference of the two input signals. These pulses are filtered by the combination of R24/C5
and R25/C6. The Preamplifier amplifies these pulses which are representative of the phase
difference of the two input signals. Typical voltage levels for the Preamplifier are shown in
Table 2.
Table 2. Typical Preamplifier Voltage Levels

1

Voltage Levels

T

Phase Locked

No Input At
Jl

J2

J3

Ql
Emitter

-0.2

-1.c -1.0 -1.t

Base

-0.8

-0.8 -0.8 -1.6

Collector

-5.2

-7.9 -7.9 -1.9

Emitter

-0.2

-1.0 -1.0 -1.0

Base

-0.8

-1.7 -1.6 -0.8

-5.2

-1.8 -1.9 -7.9

Q2

1 Collector

Phase Lock Indicator @I
The outputs of the Preamplifier are compared to a reference voltage of -4 V by U2A and
U2B. The output (HULM) is high ( active state) when the loop is unlocked.
This can be checked by disconnecting the 400 MHz input at A7A3Jl (96 cable) and measuring
the output of U2 (Pl-26). With the loop unlocked (400 MHz removed), this voltage should be
approximately 4.64 V.

6

A7A3

HP Part Number 85660-60136
A7A3 M/N Phase Detector

HP Part
Number

C
c

A7A3

85660-60136

I

1

BOARD ASSEMBLY, M/N PHASE DETECTOR

A7A3Cl
A7A3C2
A7A3C3
A7A3C4
A7A3C5

0160-4299
0160-0574
0160-4299
0180-0100
0160-0572

I

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

2200PF +-20% 250VDC
.022UF +-20% 1OOVOC
2200PF +-20% 250VDC
4.7UF+-10% 35VDC TA
2200PF +-20% 1OOVDC

CER

56289
04222

aoa(2Kv) X5R 222M
SR201C223MAAH
aoa(2Kv) X5R 222M
150D475X9035a2-DYS
SR201C222MAAH

A7A3C6
A7A3C7
A7A3Ca
A7A3C9
A7A3ClO

0160-0572
0160-3876
0160-3877
0160-3876
0160-0574

1
4
E
;1
2

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

2200PF +-20% 1OOVDC CER
47PF +-20% ZOOVDC CER
1OOPF +-20% LOOVDC CER
47PF +-20% EOOVDC CER
.022UF +-20% IOOVDC CER

04222
04222
04222
04222
04222

SR201C222MAAH
SR202C470MAAH
SR202ClOlMAAH
SR202C470MAAH
SR201C223MAAH

A7A3Cll
A7A3C12
A7A3C13
A7A3C14
A7A3C15

0160-3873
0160-0574
0160-3878
0160-0574
0160-3878

1
3
E
3
E

1
1
1
1
1

CAPACITOR-FXD 4.7PF +-.5PF ZOOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAP-FXD 1OOOpF 100 V

04222
04222
04222
04222

FD12COG2D4R7D
SR201C223MAAH
SR201C102MAAH
SR201C223MAAH
SR201C102MAAH

A7A3C16
A7A3C17
A7A3Cla
A7A3C19
A7A3C20

0160-3878
olao-0197
D160-4299
3180-0291
3160-0574

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 2200PF +-20x 250VDC CER
CAPACITOR-FXD lUF+-10% 35VOC TA
CAPACITOR-FXD .022UF +-20% IOOVDC CER

56289
04222

SR201C102MAAH
1500225X9020A2-DYS
aoa(2Kv) X5R 222M
1500105X9035A2-DYS
SR201C223MAAH

A7A3C21
A7A3C22
A7A3Jl
A7A3Ll
A7A3L2

3160-4299
3160-0574
1250-2112
3100-1641
3100-2259

7
3
1
0
a

1
1
1
1
1

CAPACITOR-FXD 2200PF +-20% 250VDC CER
CAPACITOR-FXD .022UF +-20% 1OOVOC CER
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 240UH +-5% .166D-INX.
INDUCTOR RF-CH-MLD 1.5UH +-lo% .105D-INX

04222
98291
99800
99800

aoa(2Kv) X5R 222M
SR201C223MAAH
051-047-0259-220
1537-94
1025-24

A7A3L3
A7A3L4
A7A3L5
A7A3L6
A7A3L7

3100-1641
3100-2891
3100-2891
3100-2248
3100-2248

0
4
4
5
5

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

240UH +-5% .166D-INX.
50NH +-lo% .105D-INX.
50NH +-lo% .105D-INX.
120NH +-lo% .105D-INX
120NH +-lo% .105D-INX

99800
24226
24226
24226
24226

1537-94
lOM050K-1
lOM050K-1
lOM120K
lOM120K

A7A3La
A7A3MPl
A7A3MP3
A7A3MP4
A7A3MP5

3100-2248

5

1

24226

lOM120K

3520-0129
1590-0533
1205-0285

a
5
0

13
13
5

INDUCTOR RF-CH-MLD 120NH +-lo% .105D-INX
NOT ASSIGNED
SCREW-MACH 2-56 .312-IN-LG PAN-HD-POZI
THREADED INSERT-NUT 2-56 .06-IN-LG SST
HEAT SINK SGL DIP

77250
46384
13103

KFS2-256
6007A-TOP

A7A3MP6
A7A3MP7
A7A3MPa
A7A3MPlO
A7A3MP12

!190-0014
!190-0124
!200-0101
!950-0078
35660-20047

1
4
0
9
9

3
5
2
3
1

WASHER-LK INTL T NO. 2 .Oa9-IN-ID
WASHER-LK INTL T NO. 10 .195-IN-ID
SCREW-MACH 4-40 .laa-IN-LG PAN-HD-PDZI
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
COVER PC M/N DETECTOR

78189
98291
77250
74163
28480

1902-00-00-2580
3002-26

A7A3MP13
A7A3MP14
A7A3MP16
A7A3MP17
A7A3Ql

35660-20068
36701-00032
36701-40001
!190-0112
1853-0451

4
2
9
0
5

2
1
2
10
1

GROUND LUG
HEAT SINK IC
EXTRACTOR PC
WASHER-LK SPLIT .Oaa-IN-ID
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW

28480
28480
28480
28480
04713

85660-20068
86701-00032
86701-40001
2190-0112

A7A3Q2

1853-0451

5

1

TRANSISTOR PNP 2N3799 SI TO-la PD=360MW

04713

Reference
Designation

Mfr
Code

Description

a!
-

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

28480
CER
CER
CER

04222

04222
56289

Mfr Part
Number
85660-60136

500220
85660-20047

-

*Indicates facto y-selected value

8566040136 Parts List
Page 1 of 3

HP Part Number 85660-60136
A7A3 M/N Phase Detector
Reference
Designation

HP Part
Number

c
0 31

Mfr

Description

-

A7A3Q3
A7A3Q4
A7A3Rl
A7A3R2

.854-0345
.854-0345
1698-3154
)698-3154

A7A3R3
A7A3R4
A7A3R5
A7A3R6
A7A3R7

1698-3154
1698-3154
1698-7267
1757-0401
1698-0083

A7A3Ra
A7A3R9
A7A3RlO
A7A3Rll
A7A3R12

1698-7192
1757-0280
1757-0280
1698-3154
698-7212

A7A3R13
A7A3R14
A7A3R15
A7A3R16
A7A3R17

1698-3157
1757-0416
1757-0416
8698-7248
698-7248

A7A3R18
A7A3R19
A7A3R20
A7A3R21
A7A3R22

Mfr Part
Number

Code

1

1
1
1

TRANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
TRANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
RESISTOR 4.221: 1% .125W TF TC=O+-100
RESISTOR 4.22K 1% .125W TF TC=O+-100

04713
04713
19701
19701

2N5179
2N5179
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

4.22K 1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
19.6K +-1% .05W TF TC=O+-100
100 +-I% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

14.7 +-1% .05W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
100 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
SFR25H
50635

3
7
7
1
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19.6K 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
3.16K +-1% .05W TF TC=O+-100
3.16K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635
50635

698-7223
698-7256
698-7248
698-7220
698-7220

2
1
1
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

287 +-1% .05W TF TC=O+-100
6.81K +-1% .05W TF TC=O+-100
3.16K +-1X .05W TF TC=O+-100
215 +-1% .05W TF TC=O+-100
215 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A7A3R23
A7A3R24
A7A3R25
A7A3R26
A7A3R27

698-7192
757-0416
757-0416
757-0441
757-0441

4
7
7
6
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

14.7 +-1% .05W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
8.25K +-I% .125W TF TC=O+-100
8.25K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
SFR25H
SFR25H

A7A3R28
A7A3R29
A7A3R30
A7A3TPl
A7A3TP2

698-3157
698-3162
698-0083
251-0600
251-0600

3
0
3
D
3

1
1
1
1
1

RESISTOR 19.6K 1%
RESISTOR 46.4K 1%
RESISTOR 1.96K 1%
CONNECTOR-SGL CONT
CONNECTOR-SGL CONT

.125W TF TC=O+-100
.125W TF TC=O+-100
.125W TF TC=O+-100
PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ

SQ
SQ

19701
19701
19701
27264
27264

SFR25H
SFR25H
SFR25H
16-06-0034
16-06-0034

A7A3TP3
A7A3TP4
A7A3TP5
A7A3TP6
A7A3TP7

251-0600
251-0600
251-0600
251-0600
251-0600

3
3
3
3
3

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

PIN
PIN
PIN
PIN
PIN

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A7A3Ul
A7A3U2
A7A3U3
A7A3U4
A7A3U5

820-1344
081-8117
810-0251
620-1225
610-0204

3
3
3
$
5

1
1
1
1
1

IC PL LOOP 14-DIP-C PKG
SCREEN 1826-0092
VETWORK-RES lo-SIP MULTI-VALUE
IC FF ECL D-M/S DUAL
UETWORK-RES a-SIP l.OK OHM X 7

04713
28480
91637
04713
11236

MC12040L
5081-8117
CSClOC-oo-sxx
MC10231P
750-81

A7A3U6
A7A3U7
A7A3U8
A7A3U9

320-0821
520-0802
310-0204
320-0806

1
L
5
j

1
1
1
1

IC CNTR ECL
IC GATE ECL
YETWORK-RES
tC GATE ECL

04713
04713
11236
04713

MC10136L
MC10102P
750-81
MC10109P

C
0
4
0
a

CONT
CONT
CONT
CONT
CONT

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14~MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

BIN UP/DOWN SYNCHRO POS-EDGE
NOR QUAD L-INP
&SIP l.OK OHM X 7
OR-NOR DUAL 4-5-INP

-

8566040136 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60136
A7A3 M/N Phase Detector
Reference
Designation
~

HPPart ‘C’
Number D QtJ
-

A7A3UlO

1820-0820

A7A3Ull
A7A3U12
A7A3U13
A7A3U14
A7A3U15

3

1

I

I
Description

~~~ I
Mfr
Code

Mfr Part
kl..-I.,...

IC FF ECL J-BAR K-BAR COM CLOCK DUAL

04713

MC10135L

1810-0204
1820-0802
1810-0251
1820-1225
1810-0204

NETWORK-RES &SIP l.OK OHM X 7
IC GATE ECL NOR QUAD 2-INP
NETWORK-RES lo-SIP MULTI-VALUE
IC FF ECL D-M/S DUAL
NETWORK-RES a-SIP l.OK OHM X 7

11236
04713
91637
04713
11236

750-81
MC10102P
CSClOC-oo-sxx
MC10231P
750-81

A7A3U16
A7A3U17
A7A3U18
A7A3U19
A7A3U20

1820-0821
1810-0251
1820-0802
1810-0204
1820-0806

IC CNTR ECL BIN UP/DOWN SYNCHRO POS-EDGE
NETWORK-RES lo-SIP MULTI-VALUE
IC GATE ECL NOR QUAD 2-INP
NETWORK-RES a-SIP l.OK OHM X 7
IC GATE ECL OR-NOR DUAL 4-5-INP

04713
91637
04713
11236
04713

MC10136L
CSClOC-oo-sxx
MC10102P
750-81
MC10109P

A7A3U21
A7A3U22
A7A3U23
A7A3U24
A7A3VRl

1820-0820
1810-0204
1820-0802
0955-0063
1902-3082

IC FF ECL J-BAR K-BAR COM CLOCK DUAL
NETWORK-RES a-SIP l.OK OHM X 7
IC GATE ECL NOR QUAD 2-INP
U-WAVE MIXER 500 MHZ MAX
DIODE-ZNR 4.64V 5% DO-35 PD=.4W

04713
11236
04713
15542
04713

MC10135L
750-81
MC10102P
SRA-1-32

A7A3Wl
A7A3W2

85660-60083
85660-60085

CABLE ASSEMBLY WHITE/RED (INCLUDES 53)
CABLE ASSEMBLY GRAY/WHITE (INCLUDES 52)

28480
28480

85660-60083
85660-60085

1
1

*Indicates factory-selected value

85660-60136 Parts List
Page 3 of 3

-0

idOU

c

w

w

>c/
0)
e
ul

A7A4
A7A4 M/N Output, Circuit Description
A7A4 amplifies the output of the A7A4Al M/N VCO in two different paths. One path is
amplification and buffering to drive the mixer in the M/N phase-lock loop. The other path
drives a divide by two which, after further amplification, goes to the AllA Sampler.
The integrating loop amplifier which generates the tuning voltage for the M/N VCO is also
included on A7A4.

LO Output Amplifier @J
Q5 is a common-emitter amplifier followed by a resistive pad to increase reverse isolation. Q2
is a common-base amplifier which is broadly tuned by L2, LlO, and associated capacitances.
Ql is another common-emitter amplifier which is followed by a 400 MHz low-pass filter.

Divide By 2 @
U2 is an ECL divide-by-2 Integrated Circuit. U2 generates the M/N output frequency which
is one-half that of the M/N VCO. For frequency spans of greater than 5 MHz, the M/N
control line (LMNE) goes to a TTL high during the sweep. This disables U2, switching off
the M/N output to the AllA Sampler. At the beginning of each sweep, U2 is turned back
on and the M/N VCO is phase-locked to give the correct start frequency. During multi-band
sweeps, U2 is turned on at the beginning of each band, but is turned off during the actual
sweep.

Loop Amplifier @
Ul is connected as an integrating amplifier and generates -5 V to -35 V for tuning the M/N
VCO. Cl3 is the integrating capacitor; Cl2 and Cl5 compensate Ul to guarantee stability.
R33, R34, C14, and R15 compensate the entire phase-lock loop. The 200 kHz low pass filter
rejects the sampling frequency (20 MHz divided by N) and its harmonics which are generated
in the phase detector. CR6, R42, and R41 form an impedance breakpoint that increases the
loop gain by approximately 5 dB when the tune voltage goes below approximately -7 V. This
helps to make the varactor tuning curve linear.
For instruments with A7A4 M/N Output Assembly, part number 85660-60267, power for
integrating amplifier Ul is provided by an additional +20 V connection (Pl-9, P24) and
by QlO which generates -15 V from the -40 V supply. The output of Ul is buffered by
common-base amplifier QS and by emitter-follower buffer Q9.

A7A4 1

Voltage-Controlled Oscillator 6~
The M/N voltage-controlled oscillator (VCO) consists of a resonator A7A4AlAl and Q2 with
its associated circuitry. The oscillation frequency is determined by the bias on the varactors
CR1 and CR2 which tunes the cavity resonator. Coarse tuning is provided by Cl, while
C5 is used to vary the output coupling to the cavity thereby varying the output power.
The impedance looking into the emitter of Q2 has a negative real part which provides the
conditions necessary for oscillation to occur.

Buffer Amplifier @
Ql is a common-emitter buffer amplifier which provides at least 0 dBm output over the 355 to
395 MHz range of the VCO.

LO Amplifier @
QS and Q7 form a buffer amplifier to assure that there is approximately 0 dBm to drive the
ECL divide-by-2 IC (U2 in block 0). R24 and R25 set the proper dc level to drive U2.

M/N Output Amplifier @
Q3 and Q4 provide buffering between the ECL divider U2 and the output.

A7A4 M/N Output, Troubleshooting
The VCO tune voltage from the A7A3 M/N Phase Detector is amplified and applied to the
Voltage-Controlled Oscillator (VCO) by the loop amplifier. The VCO output is amplified,
divided by two, and applied to the AllA Sampler for phase locking the AllA YIG-Tuned
Oscillator (YTO) in 10 MHz increments. A portion of the VCO output provides feedback to
the A7A3 Phase Detector for phase locking of the M/N Loop.
Spectrum analyzer control settings for A7A4 troubleshooting:

(2-22)
(SHIFT) (MKRJREF

LVL )

(KSR)

(SHIFT) (BW) (KSF)
(CENTERFREQUENCY) . . . . . . . .
[FREQUENCY SPAN) . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.77 GHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz

Loop Amplifier @
The tune voltage from the Loop Amplifier can be measured at TPl, located on the cover of
the A7A4. The dc voltage at TPl, with the front panel settings indicated above, shoud be
-14.2 V. If an unlocked condition exists, the voltage is approximately -0.5 V or -37.5 V.
If the level is -0.5 V, the probable cause is no VCO output to the A7A3 Phase Detector.
A level of -37.5 V indicates that the 20 MHz reference to the A7A3 Phase Detector is not
present.

2 A7A4

Voltage-Controlled Oscillator (VCO) @j and Buffer Amplifier @
The VCO output frequency with the tuning voltage set to -14.2 V should be 380 MHz.
Typical voltage levels for the VCO are as shown in Table 1.
Table 1. Typical VCO Voltage Levels

LO Output Amplifier @
Table 2. Typical LO Output Amplifier Voltage Levels
A7A4A2 Voltage Levels

Q5

Q2

Ql

Emitter

-6.9 -6.7 -6.7

Base

-6.2 -6.2 -6.2

Collector -0.5

0.0

0.0

LO Amplifier @ and M/N Output Amplifier @
Table 3. Typical LO and M/N Output Amplifier Voltage Levels
A7A4A2 Voltage Levels

Q6

Q7

Q3

Q4

Emitter

-6.7 -3.1 -4.5 -5.2

Base

-6.2 -2.4 -3.8 -4.5

Collector - 2 . 4 - 1 . 1

0.0

-2.3

A7A4

3

(2 PLACES)
Ga
(2 PLACES)

(2 PLACES)

PLACES)

/
A7A4A2

/
A7A4A2Wl

\
A7A4AlAl

A7AiAlA2

\
a7a4’nr
A7A4AlA2Wl

Figure 1. A7A4 M/N Output Assembly, Parts Identification (1 of 2)

4 A7A4

Item HP Part CD
Number

Description

Mfr
Code

M f r Pari
Number

1

86701-40001

9

EXTRACTOR, PC BOARD

28480

86701-4000

2

2200-0101

0

SCREW, MACH, 4-40, .188-IN LG, PAN HD

28480

86701-2004

3

86701-20049

3

SCREW, TUNING, FREQ ADJUST

28480

86701-2004

4

2950-0078

9

NUT, HEX, lo-32 (FOR FREQ ADJUST (3))

28480

2950-0078

5

3050-0082

8

WASHER, FL NM, .116-IN ID (FOR (3))

28480 3050-0082

6

2580-0002

4

NUT, HEX, 8-32 (FOR C23)

28480

2580-0002

7

2190-0009

4

WASHER, LOCK, .168-IN ID FOR C23)

28480

2190-0009

8

2260-0002

6

NUT, HEX, 4-40 (FOR PWR ADJUST)

28480

2260-0002

9

86701-20046

0

PROBE, 4-40 THREAD (PWR ADJUST)

28480

86701-2004

10

86701-20047

1

SUPPORT-RESONATOR (FOR PROBE (9))

28480

86701-2004

11

0520-0128

7

SCREW, MACH, 2-56, .250-IN LG, PAN HD

28480

0520-0128

12

2190-0045

8

WASHER, LOCK, .088-IN ID (FOR SCREW (11))

28480

2190-0045

13

0380-0020

0

SPACER, .250-IN LG, .lZ%IN ID (FOR (14))

28480

0380-0020

14

0520-0133

4

SCREW, MACH, 2-56, .500-IN LG, PAN HD

28480

0520-0133

15

8566G20049

1

COVER, PC BOARD, (1714 M/N OUTPUT)

2 8 4 8 0 85660-20041

16

2950-0078

9

NUT,HEX, lO-32(FOR Jl AND 52)

28480

29504078

17

2190-0124

4

WASHER, LOCK, .195-IN ID (FOR Jl AND 52)

28480

2190-0124

18

85660-20068

4

GROUND LUG (FOR Jl AND 52)

28480

85660-20061

19

2200-0167

8

SCREW, MACH, 4-40, .375-IN LG, FLAT HD

28480

2200-0167

20

2200-0101

0

SCREW, MACH, 4-40, .188-IN LG, APN HD POZI

28480

2200-0101

21

8566CbOOO65

9

IC HEAT SINK

28480

85660-0006!

Figure 1. A7A4 M/N Output Assembly, Parts Identification (2 of 2)

A7A4 5

HP Part Number 85660-60113
A7A4 M/N Output
HP Part
Number

m
-

A7A4

35660-60113

1

M/N OUTPUT ASSEMBLY (SERIAL PREFIXES:
2410A - 2607A)

28480

85660-60113

A7A4Al

35660-60096

1

M/N VOLTAGE CONTROLLED OSCILLATOR ASSY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480

85660-60096

A7A4AlAl
A7A4AlA2

35660-60112
~5660-60018

1
1

M/N VOLTAGE CONTROLLED OSCILLATOR
M/N VCO BOARD ASSEMBLY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480
28480

85660-60112
85660-60018

A7A4A2

35660-60192

1

M/N OUTPUT BOARD ASSEMBLY
(SERIAL PREFIXES 2410~ THROUGH 2449A)
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480

85660-60192

Reference
Designation

Description

Mfr
Code

Mfr Part
Number

-OR{5660-60239

A7A4MPl

!200-0168

1

2

M/N OUTPUT BOARD ASSEMBLY (SERIAL
PREFIXES 2503A THROUGH 2607A) (A
COMPLETE PARTS LIST FOR THIS BOARD ASSY
IS INCLUDED IN THIS SECTION)

28480

SCREW-MACH 4-40 .438-IN-LG 82 DEG

77250

85660-60239

-

*Indicates factory-selected value

85660-60113 Parts List
Page 1 of 1

HP Part Number 85660-60267
A7A4 M/N Output
Reference
Designation

HP Part
Number

Description

Mfr
Code

Mfr Part
Number

A7A4

35660-60267

M/N OUTPUT ASSEMBLY
(SERIAL PREFIX: 2611~)

28480

85660-60267

A7A4Al

35660-60096

M/N VOLTAGE CONTROLLED OSCILLATOR ASSY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480

85660-60096

A7A4AlAl
A7A4AlA2

35660-60112
35660-60018

M/N VOLTAGE CONTROLLED OSCILLATOR
M/N VCO BOARD ASSEMBLY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480
28480

85660-60112
85660-60018

A7A4A2

35660-60266

M/N OUTPUT BOARD ASSEMBLY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480

85660-60266

A7A4MPl

!200-0168

SCREW-MACH 4-40 .438-IN-LG 82 DEG

77250

*Indicates factory-selected value

85660-60267 Parts List
Page 1 of 1

HP Part Number 85660-60096
A7A4Al VCO Assembly
Reference
Designation

HP Part
Number

Description

Mfr
Code

Mfr Part
Number

A7A4Al

35660-60096

M/N VOLTAGE CONTROLLED OSCILLATOR
ASSEMBLY

28480

85660-60096

A7A4AlAl
A7A4AlA2

35660-60112
35660-60018

M/N VOLTAGE CONTROLLED OSCILLATOR
M/N VCO BOARD ASSEMBLY
(A COMPLETE PARTS LIST FOR THIS BOARD
ASSY IS INCLUDED IN THIS SECTION)

28480
28480

85660-60112
85660-60018

1380-0020
1520-0131
1520-0174
!190-0014
!260-0002

SPACER .250-IN-LG .128-IN-ID
SCREW-MACH 2-56 .438-IN-LG PAN-HD-POZI
SCREW-MACH 2-56 .250-IN-LG PAN-HD-PDZI
LOCK WASHER .089-IN-ID
NUT-HEX 4-40

iO50-0672
$6701-20046
i6701-20047

WASHER SH .118-IN-IO
PROBE
RESONATOR SUPPORT

*Indicates factory-selected value

77250
78189

1902-00-00-2580

85660-60096 Parts List
Page 1 of 1

HP Part Number 85660-60018
A7A4AlA2 M/N VCO Board
-

HP Part
Number

C
c

A7A4AlA2

85660-60018

t

1

BOARD ASSEMBLY, M/N VCO

28480

85660-60018

A7A4AlA2Cl
A7A4AlA2C2
A7A4AlA2C3
A7A4AlA2C4
A7A4AlA2CS

0160-3878
0160-3878
0160-3879
0160-3878
0180-1731

f
t
i
t
E

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAP-FXO 1OOOpF 100 V
CAPACITOR-FXD 4.7UF+-10% 50VDC TA

04222
04222
04222
04222
56289

SR201C102MAAH
SR201C102MAAH
SR201C103MAAH
SR201C102MAAH
150D475X9050B2-OYS

A7A4AlA2C6
A7A4AlA2C7
A7A4AlA2C8
A7A4AlA2C9
A7A4AlA2ClO

0160-3878
0160-3878
0160-3873
0160-3878
0160-3879

e
t
1
f
7

1
1
1
1
1

CAP-FXD 1OOOpF
CAP-FXD 1OOOpF
CAPACITOR-FXD
CAP-FXO 1OOOpF
CAPACITOR-FXD

04222
04222

SR201C102MAAH
SR201C102MAAH
FD12COG2D4R7D
SR201C102MAAH
SR201C103MAAH

A7A4AlA2Cll
A7A4AlA2J2
A7A4AlA2J3
A7A4AlA2J4
A7A4AlA2Ll

0180-2161
1251-0600
1251-0600
1251-0600
9135-0073

c
c
c
C
?

1
1
1
1
1

CAPACITOR-FXD .75UF+-10% SOVDC TA
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SC
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SC
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
INDUCTOR RF-CH-MLD 51NH +-6.596% 2.60-MM

56289
27264
27264
27264
06560

150D754X9050A2-OYS
16-06-0034
16-06-0034
16-06-0034

A7A4AlA2L2
A7A4AlA2L3
A7A4AlA2L4
A7A4AlA2MPl
A7A4AlA2MP2

9100-0346
86701-20051
3140-0158

C
7
6

1
1
1

32159
28480
32159

lA5004M 20%
86701-20051
lA1002M +-lo%

0590-0519

7

1

INDUCTOR RF-CH-MLD 50NH +-20% .105D-INX.
INDUCTOR
INDUCTOR RF-CH-MLD 1UH +-lo% .105D-INX.2
NOT ASSIGNED
THREADED INSERT-NUT 4-40 .062-IN-LG STL

46384

KF2-440-El

A7A4AlA2MP3
A7A4AlA2MP4
A7A4AlA2MPS
A7A4AlA2Ql
A7A4AlA2Q2

1251-2313
3151-0013
36701-20052
1854-0686
1854-0610

6
4
a
0
0

1
1
2
1
1

CONNECTOR-SGL CONT SKT .04-IN-BSC-SZ RND
t/IRE 22AWG 1X22
SPACER, INSULATOR
TRANSISTOR NPN SI TO-72 PD=EOOMW FT=4GHZ
TRANSISTOR NPN SI TO-46 FT=800MHZ

00779
92194
28480
25403
04713

3-332070-5
298
86701-20052

A7A4AlA2Rl
A7A4AlA2R2
A7A4AlA2R3
A7A4AlA2R4
A7A4AlA2R5

3757-0317
3698-7219
1699-2029
3698-3154
3757-0428

7
6
8
0
1

1
1
1
1
1

?ESISTOR
?ESISTOR
7ESISTOR
IESISTOR
7ESISTOR

1.33K +-1% .125W TF TC=O+-100
196 +-1% .05W TF TC=O+-100
16.2 +-1% .05W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100

19701
19701
91637
19701
19701

SFR25H
50635
CMF-50-21
SFR25H
SFR25H

A7A4AlA2R6
A7A4AlA2R7
A7A4AlA2R8
A7A4AlA2R9
A7A4AlA2RlO

1698-7262
1757-0428
1698-7248
1699-1903
1698-7265

9
1
1
5
2

1
1
1
1
1

?ESISTOR
IESISTOR
IESISTOR
[ESISTOR
ZESISTOR

12.1K
1.62K
3.16K
51.1
16.2K

19701
19701
19701
91637
19701

50635
SFR25H
50635
CMF-50-21
50635

A7A4AlA2Rll
A7A4AlA2R12
A7A4AlA2R13
A7A4AlA2Wl
A7A4AlA2W2

1698-7250
1757-0401
1757-0400
35660-60118
36701-20050

5
0
9
9
6

1
1
1
1
1

{ESISTOR 3.83K +-1% .05W TF TC=O+-100
IESISTOR 100 +-1% .125W TF TC=O+-100
(ESISTOR 90.9 +-1% .125W TF TC=O+-100
:ABLE ASSEMBLY, WHITE (INCLUDES Jl)
JUMPER CABLE

19701
19701
19701
28480
28480

50635
SFR25H
SFR25H
85660-60118
86701-20050

Reference
Designation

Description

*
-

100 V
100 V
4.7PF +-.5PF POOVDC CER
100 V
.OlUF +-20x 1OOVDC CER

+-1% .05W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-1% .05W TF TC=O+-100
+-1% .05W TF TC=O+-100
+-1% .05W TF TC=D+-100

Mfr
Code

04222
04222

Mfr Part
Number

-

*Indicates factory-selected value

85660-60018 Parts List
Page 1 of 1

HP Part Number 85660-60192
ATA4A2 M/N Output Board

HP Part
Number

::
0

A7A4A2

85660-60192

9

1

BOARD ASSEMBLY, M/N OUTPUT
(SERIAL PREFIXES: 2410A - 2449A)

28480

85660-60192

A7A4A2Cl
A7A4A2C2
A7A4A2C3
A7A4A2C4
A7A4A2C5

0160-3878
0160-3878
0160-3874
0160-3878
0160-3878

E
f

CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100
CAPACITOR-FXD 1OPF
CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100

04222
04222

2
E
E

1
1
1
1
1

SR201C102MAAH
SR201C102MAAH
F012COG2DlOOD
SR201C102MAAH
SR201C102MAAH

A7A4A2C6
A7A4A2C7
A7A4A2C8
A7A4A2C9
A7A4A2ClO

0160-3873
0160-3878
0160-3873
0160-3874
0160-3872

1
f
1
2
C

1
1
1
1
1

CAPACITOR-FXD 4.7PF +-.5PF LOOVDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 4.7PF +-.5PF 200VDC CER
CAPACITOR-FXD 1OPF +-.5PF 200VDC CER
CAPACITOR-FXD 2.2PF +-.25PF LOOVDC CER

28480
04222
28480
28480

0160-3873
SR201C102MAAH
FD12COG2D4R7D
0160-3874
0160-3872

A7A4A2Cll
A7A4A2C12
A7A4A2C13
A7A4A2C14
A7A4A2C15

0160-3874
0160-2261
0160-2290
0160-2290
0140-0196

2
9
4
4
3

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

28480
52763
84411
84411
09023

0160-3874
2RDPLX05015RNPO
HEW-238T
HEW-238T
C015FD151J03

A7A4A2C16
A7A4A2C17
A7A4A2C18
A7A4A2C19
A7A4A2C20

0160-3878
0160-3878
0160-3874
0160-3876
0160-3878

E
E
2
4
E

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100
CAPACITOR-FXO 1OPF
CAPACITOR-FXD 47PF
CAP-FXD 1OOOpF 100

04222
04222
28480
04222
04222

SR201C102MAAH
SR201C102MAAH
0160-3874
SR202C470MAAH
SR201C102MAAH

A7A4A2C21
A7A4A2C22
A7A4A2C23
A7A4A2C24
A7A4A2C25

0160-3878
0160-3878
0160-4351
0160-0161
0160-0153

E
E
2
4
4

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FDTHRU 1OOOPF 20% 200V CER
CAPACITOR-FXD .OlUF +-lo% ZOOVDC POLYE
CAPACITOR-FXD IOOOPF +-lo% EOOVDC POLYE

04222
04222
33095
84411
84411

SR201C102MAAH
SR201C102MAAH
54-713-032-X5F-102M
HEW-238M
HEW-238M

A7A4A2C26
A7A4A2C27
A7A4A2C28
A7A4A2C29
A7A4A2C30

0160-0161
0160-3534
0160-0298
0180-0197
0160-3878

4
1
e
e
f

1
1
1
1
1

CAPACITOR-FXD .OlUF +-10% EOOVDC POLYE
CAPACITOR-FXD 510PF +-5% 1OOVDC MICA
CAPACITOR-FXD 1500PF +-lo% ZOOVDC POLYE
CAPACITOR-FXD 2.2UF+-10% 2OVDC TA
CAP-FXD 1OOOpF 100 V

84411
09023
84411
56289
04222

HEW-238M
CD15FD511J03
HEW-238M
150D225X9020A2-DYS
SR201C102MAAH

A7A4A2C31
A7A4A2C33
A7A4A2C34
A7A4A2C35
A7A4A2CR3

0180-0197
0160-3878
0160-3878
0160-3878
1901-0040

e
E
6
6
1

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
DIODE-SWITCHING 30V 50MA 2NS DO-35

56289
04222
04222
04222
71468

150D225X9020A2-DYS
SR201C102MAAH
SR201C102MAAH
SR201C102MAAH

A7A4A2CR4
A7A4A2Jl
A7A4A2J2
A7A4A2J3
A7A4A2Ll

1901-0040
1250-0657
1250-0657
1250-0257
9100-2891

1
5
5
1
4

1
1
1
1
1

DIODE-SWITCHING 30V 50MA 2NS DO-35
CONNECTOR-RF St48 M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM8 M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SM8 M PC 50-OHM
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.

71468
28480
28480
98291
24226

1250-0657
1250-0657
51-051-0169-226
lOMOSOK-1

A7A4A2L2
A7A4A2L3
A7A4A2L4
A7A4A2L5
A7A4A2L6

9100-2891
9100-2891
9100-2891
9100-2891
9100-1634

4
4
4
4
1

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

24226
24226
24226
24226
99800

lOM050K-1
lOM050K-1
lOM050K-1
lOM050K-1
1537-70

Reference
Designation

Description

a1
-

V
V
+-.5PF LOOVDC CER
V
V

1OPF +-.5PF LOOVDC CER
15PF +-5% 500VDC CER 0+-30
.15UF +-lo% 80VDC POLYE
.15UF +-lo% 8OVDC POLYE
150PF +-5% 300VDC MICA

RF-CH-ML0
RF-CH-MLD
RF-CH-MLD
RF-CH-ML0
RF-CH-ML0

V
V
+-.5PF POOVDC CER
+-20% LOOVDC CER
V

50NH
50NH
50NH
50NH
75UH

+-lo% .105D-INX.
10% .105DX.26LG
10% .105DX.26LG
+-lo% .1050-INX.
+-5% .1660-INX.3

Mfr
Code

04222
04222

Mfr Part
Number

-

*Indicates factory-selected value

85660-60192 Parts List
Page 1 of 3

HP Part Number 85660-60192
A7A4A2 M/N Output Board

Reference
Designation

HP Part
Number

c
c

Mfr
Code

Mfr Part
Number

a!
-

Description

1
1
1
1
1

INDUCTOR RF-CH-MLD 91UH +-5% .166D-INX.3
INDUCTOR RF-CH-MLD 15UH +-lo% .166D-INX.
INDUCTOR RF-CH-ML0 IOOUH +-5X .166D-INX.
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
INDUCTOR RF-CH-MLD 5ONH +-lo% .105D-INX.

998OC
9980C
9980C
2422E
24226

1537-74
1537-40
1537-76
lOM050K-1
lOM050K-1

A7A4A2L7
A7A4A2L8
A7A4A2L9
A7A4A2LlO
A7A4A2Lll

9100-1635
9100-1620
9140-0210
9100-2891
9100-2891

A7A4A2L12
A7A4A2L13
A7A4A2L 14
A7A4A2MP3
A7A4A2MP4

9100-2891
3100-2891
3140-0144
!190-0009
!190-0124

4
4
0
4
4

1
1
1
1
4

INDUCTOR RF-CH-MLD 50NH 10% .105DX.26LG
INDUCTOR RF-CH-MLD 50NH 10% .105DX.26LG
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
JASHER-LK INTL T NO. 8 .168-IN-ID
JASHER-LK INTL T NO. 10 .195-IN-ID

28480
28480
99800
28480
28480

9100-2891
9100-2891
1025-36
2190-0009
2190-0124

A7A4A2MP5
A7A4A2MP6
A7A4A2MP7
A7A4A2MP8
A7A4A2MPll

!200-0101
L580-0002
2950-0078
3050-0082
85660-20049

0
I
c
E
1

2
1
2
2
1

iCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
dUT-HEX-DEL-CHAM 8-32-THD .085-IN-THK
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
WASHER-FL NM NO. 4 .116-IN-ID .188-IN-00
COVER PC, M/N OUTPUT

00000
2848(
28481
2848C
2848C

ORDER BY DESCRIPTION
2580-0002
2950-0078
3050-0082
85660-20049

A7A4A2MP12
A7A4A2MP13
A7A4A2MP14
A7A4A2MP15
A7A4A2MP17

85660-20068
86701-40001
2200-0103
0520-0128
1205-0285

4
s
2
7
a

2
1
2
2
1

GROUND LUG
EXTRACTOR PC
SCREW-MACH 4-40 .25-IN-LG PAN-HO-POZI
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
HEAT SINK SGL DIP (COVERING u2)

2848C
2848C
77250
77250
28480

85660-20068
86701-40001

A7A4A2MP18
A7A4A2MP19
A7A4A2Ql
A7A4A2Q2
A7A4A2Q3

35660-00065
?190-0890
1854-0546
1854-0345
1854-0345

9
1
1
8
8

1
2
1
1
1

I.C. HEAT SINK
JASHER-LK HLCL
TRANSISTOR NPN
TRANSISTOR NPN
TRANSISTOR NPN

28480
28480
28480
04713
04713

85660-00065
2190-0890
1854-0546
2N5179
2N5179

A7A4A2Q4
A7A4A2Q5
A7A4A2Q6
A7A4A2Q7
A7A4A2Rl

1854-0345
1854-0546
1854-0686
1854-0345
1698-7212

8
1
0
8
3

1
1
1
1
1

TRANSISTOR NPN 2N5179 SI TO-72 PD=EOOMW
TRANSISTOR NPN SI TO-72 PD=ZOOMW
[RANSISTOR NPN SI TO-72 PD=EOOMW FT=4GHZ
[RANSISTOR NPN 2N5179 SI TO-72 PD=200MW
LESISTOR 100 +-1% .05W TF TC=O+-100

04713
28480
25403
04713
19701

2N5179
1854-0546

A7A4A2R2
A7A4A2R3
A7A4A2R4
A7A4A2R5
A7A4A2R6

1698-7248
)698-7243
1698-7205
)698-7223
J698-7248

1
6
3
7
I

1
1
1
1
1

!ESISTOR
!ESISTOR
!ESISTOR
!ESISTOR
(ESISTOR

3.16K +-I% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
51.1 +-1% .05W TF TC=O+-100
287 +-1% .05W TF TC=O+-100
3.16K +-I% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A7A4A2R7
A7A4A2R8
A7A4A2R9
A7A4A2RlO
A7A4A2Rll

3698-7243
3757-0316
3698-7221
3698-7188
1698-7212

6
6
0
8
9

1
1
1
1
1

7ESISTOR
XESISTOR
IESISTOR
1ESISTOR
ZESISTOR

1.96K +-I% .05W TF TC=O+-100
42.2 +-1% .125W TF TC=O+-100
237 +-1% .05W TF TC=O+-100
10 +-1% .05W TF TC=O+-100
100 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
50635
50635
50635

A7A4A2R12
A7A4A2R13
A7A4A2R14
A7A4A2R15
A7A4A2R16

1757-0394
1698-7212
1757-1094
1757-1094
1757-1094

1
1
1
1
1

[ESISTDR
tESISTOR
lESISTOR
lESISTOR
IESISTOR

51.1 +-1% .125W
100 +-I% .05W TF
1.47K +-1% .125W
1.47K +-1% .125W
1.47K +-1% .125W

TF TC=O+-100
TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

A7A4A2R17
A7A4A2R18
A7A4A2R19

1757-1094
)698-7260
1698-7248

1
1
1

!ESISTOR 1.47K +-1% .125W TF TC=O+-100
!ESISTOR 10K +-1X .05W TF TC=O+-100
!ESISTOR 3.16K +-1% .05W TF TC=O+-100

19701
19701
19701

SFR25H
50635
50635

NO. 2 .088-IN-ID
SI TO-72 PD=ZOOMW
2N5179 SI TO-72 PD=200MW
2N5179 SI TO-72 PD=ZOOMW

-

85660-60192 Parts List
Page 2 of 3

*Indicates factory-selected value

1205-0285

215179
50635

HP Part Number 85660-60192
A7A4A2 M/N Output Board
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

A7A4A2R20
A7A4A2R21

0698-7222
0698-7223

1
2

1
1

RESISTOR 261 1% .05W F TC=O+-100
RESISTOR 287 +-1% .05W TF TC=O+-100

24546
19701

C3-l/8-TO-261R-F
50635

A7A4A2R22
A7A4A2R23
A7A4A2R24
A7A4A2R25
A7A4A2R26

0698-7188
0698-7229
0698-7219
0698-7239
0698-7243

8
8
6
0
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .05W TF TC=O+-100
511 +-1% .05W TF TC=O+-100
196 1% .05W F TC=O+-100
1.33K 1% .05W F TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
24546
24546
19701

50635
50635
C3-l/8-TO-196R-F
C3-l/8-TO-1331-F
50635

A7A4A2R27
A7A4A2R28
A7A4A2R29
A7A4A2R30
A7A4A2R31

0698-7248
0698-7229
0698-7243
0698-7200
0698-7224

1
8
6
5
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.16K +-1% .05W TF TC=O+-100
511 +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
31.6 1% .05W F TC=O+-100
316 1% .05W F TC=O+-100

19701
19701
19701
24546
24546

50635
50635
50635
C3-l/8-TO-31R6-F
C3-l/8-TO-316R-F

A7A4A2R32
A7A4A2R33
A7A4A2R34
A7A4A2R35
A7A4A2R36

0698-7188
0757-0280
0757-0279
0698-7223
0698-7210

8
3
0
2
7

1
1
1
1
1

RESISTOR 10 +-1X .05W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 3.16K +-1% .125W TF TC=O+-100
RESISTOR
287
+-1% .05W
TF TC=O+-100
RESISTOR 82.5 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
50635
50635

A7A4A2R37
A7A4A2R38
A7A4A2R39
A7A4A2Ul
A7A4A2U2

0698-7257
0698-7260
0698-7229
1826-0059
1820-2106

2
7
8
2
2

1
1
1
1
1

RESISTOR 7.5K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 511 +-1% .05W TF TC=O+-100
IC OP AMP GP TO-99 PKG
IC FF ECL D-M/S POS-EDGE-TRIG

19701
19701
19701
27014
07263

50635
50635
50635
LM201AH
FllCOGDC

A7A4A2VRl
A7A4A2VR2
A7A4A2Wl

1902-3070
1902-3070
85660-60103

5
5
2

1
1
1

DIODE-ZNR 4.22V 5% DO-35 PD=.4W
DIODE-ZNR 4.22V 5% DO-35 PD=.4W
JUMPER ASSEBMLY

04713
04713
28480

85660-60103

*Indicates factory-selected value

8566040192 Parts List
Page 3 of 3

HP Part Number 85660-60239
A7A4A2 M/N Output Board
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

A7A4A2

85660-60239

5

1

BOARD ASSEMBLY, M/N OUTPUT
(SERIAL PREFIXES: 2503~ - 2607~)

28480

85660-60239

A7A4A2Cl
A7A4A2C2
A7A4A2C3
A7A4A2C4
A7A4A2C5

0160-3878
0160-3878
0160-3874
0160-3878
0160-3878

6
6
2
6
6

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100
CAPACITOR-FXD 1OPF
CAP-FXD 1OOOpF 100
CAP-FXD IOOOpF 100

04222
04222

SR201C102MAAH
SR201C102MAAH
FD12COG2DlOOD
SR201C102MAAH
SR201C102MAAH

A7A4A2C6
A7A4A2C7
A7A4A2C8
A7A4A2C9
A7A4A2ClO

0160-4383
0160-3878
0160-3873
0160-4491
0160-4490

0
6
1
1
0

1
1
1
1
1

CAPACITOR-FXD 6.8PF +-.5PF 200VDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 4.7PF +-.5PF 200VDC CER
CAP-FXD 8.2pF 200 V
CAPACITOR-FXO 1.8PF +-.25PF 2OOVDC CER

A7A4A2C12
A7A4A2C13
A7A4A2C14
A7A4A2C15
A7A4A2C16

0160-2261
0160-2290
0160-2290
0140-0196
0160-3878

9
4
4
3
6

1
1
1
1
1

CAPACITOR-FXD 15PF +-5% SOOVDC CER 0+-30
CAPACITOR-FXD .15UF +-lo% 80VDC POLYE
CAPACITOR-FXD .15UF +-lo% 80VDC POLYE
CAPACITOR-FXD 150PF +-5X SOOVDC MICA
CAP-FXD 1OOOpF 100 V

52763
84411
84411
09023
04222

2RDPLX05015RNPO
HEW-238T
HEW-238T
CD15FO151JO3
SR201C102MAAH

A7A4A2C17
A7A4A2C18
A7A4A2C19
A7A4A2C20
A7A4A2C21

0160-3878
0160-4389
0160-3876
0160-3878
0160-3878

6
6
4
6
6

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD IOOpF 200 V
CAPACITOR-FXD 47PF +-20% 2OOVOC CER
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V

04222
04222
04222
04222
04222

SR201C102MAAH
SR202AlOlJAAH
SR202C470MAAH
SR201C102MAAH
SR201C102MAAH

A7A4A2C22
A7A4A2C23
A7A4A2C24
A7A4A2C25
A7A4A2C26

0160-3878
0160-4351
0160-0161
0160-0153
0160-0161

6
2
4
4
4

1
1
1
1
1

CAP-FXD IOOOpF 100 V
CAPACITOR-FDTHRU 1OOOPF 20% 200V CER
CAPACITOR-FXD .OlUF +-lo% 200VDC POLYE
CAPACITOR-FXD IOOOPF +-lo% 200VDC POLYE
CAPACITOR-FXD .OlIJF +-lo% 2OOVOC POLYE

04222
33095
84411
84411
84411

SR201C102MAAH
54-713-032-X5F-102M
HEW-238M
HEW-238M
HEW-238M

A7A4A2C27
A7A4A2C28
A7A4A2C29
A7A4A2C30
A7A4A2C31

0160-3534
0160-0298
0180-0197
0160-3878
0180-0197

1
8
8
6
8

1
1
1
1
1

CAPACITOR-FXD 510PF +-5% 1OOVDC MICA
CAPACITOR-FXD 1500PF +-lo% POOVDC POLYE
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 2.2UF+-10% 20VDC TA

09023
84411
56289
04222
56289

CD15FD511J03
HEW-238M
150D225X9020A2-DYS
SR201C102MAAH
1500225X9020A2-DYS

A7A4A2C33
A7A4A2C34
A7A4A2C35
A7A4A2CR3
A7A4A2CR4

0160-3878
0160-3878
0160-3878
1901-0040
1901-0040

6
6
6
1
1

1
1
1
1
1

CAP-FXD 1OOOpF
CAP-FXD 1OOOpF
CAP-FXD 1OOOpF
DIODE-SWITCHING
DIODE-SWITCHING

04222
04222
04222
71468
71468

SR201C102MAAH
SR201C102MAAH
SR201C102MAAH

A7A4A2Jl
A7A4A2J2
A7A4A2J3
A7A4A2L 1
A7A4A2L2

1250-0690
1250-2112
1250-0257
9100-2891
9100-2891

6
1
1
4
4

1
1
1
1
1

CONNECTOR-RF SMB M
CONNECTOR-RF SMB M
CONNECTOR-RF SMB M
INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD

SGL-HOLE-FR 50-OHM
SGL-HOLE-FR 50-OHM
PC 50-OHM
50NH +-lo% .1050-INX.
50NH +-lo% .1050-INX.

98291
98291
98291
24226
24226

51-047-4610
051-047-0259-220
51-051-0169-226
lOM050K-1
lOM050K-1

A7A4A2L3
A7A4A2L4
A7A4A2L6
A7A4A2L7
A7A4A2L8

9135-0073
9100-2891
9100-1634
9100-1635
9100-1620

3
4
1
2
5

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

5lNH
50NH
75UH
91UH
15UH

06560
24226
99800
99800
99800

lOM050K-1
1537-70
1537-74
1537-40

V
V
+-.5PF 200VDC CER
V
V

100 V
100 V
100 V
30V 50MA 2NS DO-35
30V 50MA 2NS DO-35

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

+-6.596% 2.6D-MM
+-lo% .lOSD-INX.
+-5% .166D-INX.3
+-5% .166D-INX.3
+-lo% .166D-INX.

*Indicates factory-selected value

04222
04222

04222

FD12COG2D6R80
SR201C102MAAH
FD12COG204R7D
FD12COG2D8R2J
FD12COG2DlR8C

85660-60239 Parts List
Page 1 of 3

HP Part Number 85660-60239
A7A4A2 M/N Output Board
-

Reference
Designation

HP Part
Number

c
c 2:

Description

Mfr
Code

Mfr Part
Number

A7A4A2L9
A7A4A2LlO
A7A4A2Lll
A7A4A2L12
A7A4A2L13

9140-0210
9100-2891
9100-2891
9135-0079
9135-0073

1
1
L
c

A7A4A2L14
A7A4A2MPl
A7A4A2MP3
A7A4A2MP4
A7A4A2MP5

9140-0144
2190-0009
2190-0124
2200-0101

A7A4A2MP6
A7A4A2MP7
A7A4A2MP8
A7A4A2MPll
A7A4A2MP12

2580-0002
2950-0078
3050-0082
85660-20049
85660-20068

A7A4A2MP13
A7A4A2MP14
A7A4A2MP15
A7A4A2MP16
A7A4A2MP17

:

1
1
1
1
1

INDUCTOR RF-CH-MLD 1OOUH +-5% .166D-INX.
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
INDUCTOR IOONH +-5.5x 2.6D-MMX6.6LG-MM
INDUCTOR RF-CH-MLD 51NH +-6.596% 2.6D-MP

99800
24226
24226
24226
06560

1537-76
lOM050K-1
lOM050K-1
lOMOlOOX-1

c

1

99800

1025-36

1
1
2

INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
NOT ASSIGNED
WASHER-LK INTL T NO. 8 .168-IN-ID
WASHER-LK INTL T NO. 10 .195-IN-ID
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI

OG791
98291
77250

820-BC
3002-26

4
9
e
1
4

1
2
1
1
2

NUT-HEX-DBL-CHAM 8-32-THD .085-IN-THK
NUT-HEX-DBL-CHAM IO-32-THD .067-IN-THK
WASHER-FL NM NO. 4 .116-IN-ID .188-IN-00
COVER PC, M/N OUTPUT
GROUND LUG

80120
74163
76854
28480
28480

86701-40001
2200-0103
0520-0128
0590-0533
1205-0285

9
2
7
5
0

1
2
2
2
1

EXTRACTOR PC
SCREW-MACH 4-40 .25-IN-LG PAN-HO-POZI
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
THREADED INSERT-NUT 2-56 .06-IN-LG SST
HEAT SINK SGL DIP-COVERING U2

28480
77250
77250
46384
13103

A7A4A2MP18
A7A4A2MP19
A7A4A2Ql
A7A4A2Q2
A7A4A2Q3

85660-00065
2190-0112
1854-0345
1854-0345
1854-0345

9
0
8
8
8

1
2
1
1
1

I.C. HEAT SINK
WASHER-LK HLCL NO. 2 .088-IN-ID
TRANSISTOR NPN 2N5179 SI TO-72 PO=ZOOMW
TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW

28480
77339
04713
04713
04713

85660-00065

A7A4A2Q4
A7A4A2Q5
A7A4A2Q6
A7A4A2Q7
A7A4A2Rl

1854-0345
1854-0345
1854-0686
1854-0345
0698-7212

8
8
0
8
9

1
1
1
1
1

TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
TRANSISTOR NPN SI TO-72 PD=ZOOMW FT=4GHZ
TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
RESISTOR 100 +-1% .05W TF TC=O+-100

04713
04713
25403
04713
19701

2N5179
2N5179
2N5179
50635

A7A4A2R2
A7A4A2R3
A7A4A2R4
A7A4A2R5
A7A4A2R6

0698-7248
0698-7243
0698-7205
0698-7223
0698-7248

1
6
0
2
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.16K +-1% .05W TF TC=O+-100
1.96K +-I% .05W TF TC=O+-100
51.1 +-1% .05W TF TC=O+-100
287 +-1% .05W TF TC=O+-100
3.16K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A7A4A2R7
A7A4A2R8
A7A4A2R9
A7A4A2RlO
A7A4A2Rll

0698-7243
0757-0316
0698-7221
0698-7188
0698-7212

6
6
D
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K +-1% .05W TF TC=O+-100
42.2 +-1% .125W TF TC=O+-100
237 +-1% .05W TF TC=O+-100
10 +-I% .05W TF TC=O+-100
100 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
50635
50635
50635

A7A4A2R12
A7A4A2R13
A7A4A2R14
A7A4A2R15
A7A4A2R16

D757-0394
0698-7212
3757-1094
3757-1094
3757-1094

1
1
1
1
1

RESISTOR
?ESISTOR
iESISTOR
?ESISTOR
7ESISTDR

51.1 +-1% .125W TF TC=O+-100
100 +-1% .05W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

A7A4A2Rl7
A7A4A2R18
A7A4A2R19

3757-1094
3698-7260
3698-7248

1
1
1

7ESISTOR 1.47K +-1% .125W TF TC=O+-100
?ESISTOR 10K +-1% .05W TF TC=O+-100
?ESISTOR 3.16K +-I% .05W TF TC=O+-100

19701
19701
19701

SFR25H
50635
50635

-

85660-60239 Parts List
Page 2 of 3

*Indicates factoy-selected value

500220
8942-3
85660-20049
85660-20068
86701-40001

KFS2-256
6007A-TOP

2N5179
2N5179
2N5179

HP Part Number 85660-60239
A7A4A2 M/N Output Board
Reference
Designation

HP Part
Number

C
0

at]
-

Description

Mfr
Code

Mfr Part
Number

A7A4A2R20
A7A4A2R21

3698-7223
3698-7223

2
2

1
1

RESISTOR 287 +-1% .05W TF TC=O+-100
RESISTOR 287 +-1% .05W TF TC=O+-100

19701
19701

50635
50635

A7A4A2R22
A7A4A2R23
A7A4A2R24
A7A4A2R25
A7A4A2R26

3698-7188
3698-7229
3698-7212
1698-7221
1698-7243

8
8
9
0
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .05W TF TC=O+-100
511 +-1% .05W TF TC=O+-100
100 +-1% .05W TF TC=O+-100
237 +-1X .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A7A4A2R27
A7A4A2R28
A7A4A2R29
A7A4A2R30
A7A4A2R31

1698-7248
1698-7229
1698-7243
1698-7195
1698-7227

1
8
6
7
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.16K +-1% .05W TF TC=O+-100
511 +-1% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
19.6 +-1X .05W TF TC=O+-100
422 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A7A4A2R32
A7A4A2R33
A7A4A2R34
A7A4A2R35
A7A4A2R36

1698-7188
1757-0280
1757-0279
1698-7223
)698-7210

8
3
0
2
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .05W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
3.16K +-I% .125W TF TC=O+-100
287 +-1% .05W TF TC=O+-100
82.5 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
50635
50635

A7A4A2R37
A7A4A2R38
A7A4A2R39
A7A4A2Ul
A7A4A2U2

1698-7257
1698-7260
1698-7229
826-0059
820-3485

2
7
8
2
2

1
1
1
1
1

RESISTOR 7.5K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
7ESISTOR 511 +-1% .05W TF TC=O+-100
IC OP AMP GP TO-99 PKG
IC PRESCR ECL

19701
19701
19701
27014
04713

50635
50635
50635
LM201AH
MC12090L

A7A4A2U2
A7A4A2VRl
A7A4A2VR2
A7A4A2Wl

820-2106
902-3070
902-3070
'5660-60103

2
5
5
2

0
1
1
1

ALTERNATE FOR 1820-3485
)IODE-ZNR 4.22V 5% DO-35 PD=.4W
IIODE-ZNR 4.22V 5% DO-35 PD=.4W
IUMPER ASSEBMLY

07263
04713
04713
28480

FllCOGDC

85660-60103

-

*Indicates factory-selected value

85660-60239 Parts List
Page 3 of 3

HP Part Number 85660-60266
A7A4A2 M/N Output Board

HP Part
Number

C
c

AJA4A2

85660-60266

E

1

BOARD ASSEMBLY, M/N OUTPUT
(SERIAL PREFIX: 2611~)

28480

85660-60266

AJA4A2Cl
AJA4A2C2
AJA4A2C3
AJA4A2C4
AJA4A2C5

0160-3878
0160-3878
0160-3674
0160-3878
0160-3878

E
E
2
E
E

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAP-FXD 1OOOpF 100
CAPACITOR-FXD 1OPF
CAP-FXD 1OOOpF 100
CAP-FXD IOOOpF 100

04222
04222

SR201C102MAAH
SR201C102MAAH
FD12COG2DlOOD
SR201C102MAAH
SR201C102MAAH

AJA4A2C6
AJA4A2CJ
AJA4A2Ca
AJA4A2C9
AJA4A2ClO

0160-4383
0160-3878
0160-3673
0160-4491
0160-4490

C
f
1
1
c

1
1
1
1
1

CAPACITOR-FXD 6.aPF +-.5PF 200VDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 4.JPF +-.5PF 200VDC CER
CAP-FXD 8.2pF 200 V
CAPACITOR-FXD l.aPF +-.25PF 200VDC CER

AJA4A2C12
AJA4A2C13
AJA4A2Cl4
AJA4A2Cl5
AJA4A2C16

9160-2261
3160-2290
3160-2290
3140-0196
3160-3878

9
4
4
3
6

1
1
1
1
1

CAPACITOR-FXD 15PF +-5% 5OOVDC CER 0+-30
CAPACITOR-FXD .15UF +-lo% a0VDC POLYE
CAPACITOR-FXD .15UF +-lo% a0VDC POLYE
CAPACITOR-FXD 150PF +-5% 300VDC MICA
CAP-FXD 1OOOpF 100 V

52763
a4411
a4411
09023
04222

2RDPLX05015RNPO
HEW-23aT
HEW-23aT
CD15FD151J03
SR201C102MAAH

AJA4A2ClJ
AJA4A2Cla
AJA4A2C19
AJA4A2C20
AJA4A2C21

3160-3878
3160-4389
3160-3676
3160-3878
1160-3878

6
6
4
6
6

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOpF 200 V
CAPACITOR-FXD 4JPF +-20% ZOOVDC CER
CAP-FXD 1OOOpF 100 V
CAP-FXD IOOOpF 100 V

04222
04222
04222
04222
04222

SR201C102MAAH
SR202AlOlJAAH
SR202C4JOMAAH
SR201C102MAAH
SR201C102MAAH

AJA4A2C22
AJA4A2C23
AJA4A2C24
AJA4A2C25
AJA4A2C26

1160-3878
1160-4351
1160-0161
1160-0153
)160-0161

6
2
4
4
4

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAPACITOR-FDTHRU 1OOOPF 20% 200V CER
CAPACITOR-FXD .OlUF +-lo% LOOVDC POLYE
CAPACITOR-FXD 1OOOPF +-lo% 200VDC POLYE
CAPACITOR-FXD .OlUF +-10x 200VDC POLYE

04222
33095
a4411
a4411
a4411

SR201C102MAAH
54-713-032-X5F-102M
HEW-23aM
HEW-23aM
HEW-23aM

AJA4A2C2 7
AJA4A2C28
AJA4A2C29
AJA4A2C30
AJA4A2C31

1160-3534
)160-0298
~180-0197
)160-3878
)lao-o197

1
1
1
1
1

CAPACITOR-FXD 510PF +-5x 1OOVDC MICA
CAPACITOR-FXD 1500PF +-lo% 200VDC POLYE
CAPACITOR-FXD 2.2UF+-10% EOVDC TA
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 2.2UF+-10% 20VDC TA

09023
84411
56289
04222
56289

CD15FD511J03
HEW-23aM
150D225X9020A2-DYS
SR201C102MAAH
150D225X9020A2-DYS

AJA4A2C33
AJA4A2C34
AJA4A2C35
AJA4A2C36
AJA4A2C3 7

)160-3878
)160-3878
)160-3878
uao-0291
)160-3878

6
6
6
3
6

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD lUF+-10% 35VDC TA
CAP-FXD 1OOOpF 100 V

04222
04222
04222
56289
04222

SR201C102MAAH
SR201C102MAAH
SR201C102MAAH
150D105X9035A2-DYS
SR201C102MAAH

AJA4A2C38
AJA4A2CR3
AJA4A2CR4
AJA4A2CR5
AJA4A2CR6

Ilao-0630
.901-0040
.901-0040
.9oi-1098
.901-0518

4
1
1
1
3

1
1
1
1
1

CAP-FXD 4.JuF 50 V TA
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING IN4150 50V 200MA 4NS
DIODE-SCHOTTKY SM SIG

56289
71466
71468
71466

19901123

AJA4A2CRJ
AJA4A2Jl
AJA4A2J2
AJA4A2J3
AJA4A2Ll

.901-1098
.250-0690
.250-2112
.250-0257
uoo-2891

1
5
1
1
1

1
1
1
1
1

DIODE-SWITCHING lN4150 50V 200MA 4NS
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SMB M PC 50-OHM
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.

71468
98291
98291
98291
24226

Reference
Designation

a!
-

Description

V
V
+-.5PF 200VDC CER
V
V

Mfr
Code

04222
04222

04222

Mfr Part
Number

F012COG2D6RaD
SR201C102MAAH
FD12COG2D4RJD
FD12COG2DaR2J
FD12COG2DlRaC

5082-2800

51-047-4610
051-047-0259-220
51-051-0169-226
lOM050K-1

-

*Indicates factory-selected value

85660-60266 Parts List
Page 1 of 3

HP Part Number 85660-60266
A7A4A2 M/N Output Board
Reference
Designation

HP Part
Number

C
c

a!
-

Description

AJA4A2L2
AJA4A2L3
AJA4A2L4
AJA4A2L6
AJA4A2L 7

9100-2891
9135-0073
9100-2891
9100-1634
9100-1635

4
?
4
1
2

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

AJA4A2La
AJA4A2L9
AJA4A2LlO
AJA4A2Lll
AJA4A2L12

9100-1620
9140-0210
9100-2891
9100-2891
9135-0079

5
1
4
4
9

1
1
1
1
1

AJA4A2L13
AJA4A2L14
AJA4A2L15
AJA4A2MPl
AJA4A2MP3

9135-0073
9140-0144
9100-1641

3
0
0

1
1
1

2190-0009

4

AJA4A2MP4
AJA4A2MP5
AJA4A2MP6
AJA4A2MP 7
AJA4A2MPa

2190-0124
2200-0101
2580-0002
2950-0078
3050-0082

AJA4A2MPll
AJA4A2MP12
AJA4A2MP13
AJA4A2MP14
AJA4A2MP15

85660-20049
85660-20068
a6701-40001
2200-0103
0520-0128

AJA4A2MP16
AJA4A2MPlJ
AJA4A2MPla
AJA4A2MP19
AJA4A2Ql

0590-0533
1205-0285
85660-00065
2190-0112
1854-0345

AJA4A2Q2
AJA4A2Q3
AJA4A2Q4
AJA4A2Q5
AJA4A2Q6

1854-0345
1854-0345
1854-0345
1854-0345
1854-0686

AJA4A2QJ
AJA4A2Qa
AJA4A2Q9
AJA4A2QlO
AJA4A2Rl

1854-0345
1853-0451
1853-0451
1853-0281
3698-7212

AJA4A2R2
AJA4A2R3
AJA4A2R4
AJA4A2R5
AJA4A2R6
AJA4A2R 7
AJA4A2Ra
AJA4A2R9

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

50NH
51NH
50NH
75UH
91UH

+-lo% .105D-INX.
+-6.596% 2.60-MM
+-lo% .lOSD-INX.
+-5% .166D-INX.3
+-5% .166D-INX.3

Mfr
Code

Mfr Part
Number

24226
06560
24226
99800
99800

lOM050K-1
1537-70
1537-74

INDUCTOR RF-CH-MLD 15UH +-10x .166D-INX.
INDUCTOR RF-CH-MLD 1OOUH +-5% .166D-INX.
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
INDUCTOR RF-CH-MLD 50NH +-IO% .lOSD-INX.
INDUCTOR 1OONH +-5.5% 2.6D-MMX6.6LG-MM

99800
99800
24226
24226
24226

1537-40
1537-76
lOM050K-1
lOM050K-1
lOMOlOOX-1

06560
99800
99800

1025-36
1537-94

1

INDUCTOR RF-CH-MLD 51NH +-6.596% 2.6D-MM
INDUCTOR RF-CH-MLD 4.JUH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 240UH +-5% .166D-INX.
YOT ASSIGNED
MASHER-LK INTL T NO. a .168-IN-IO

OGJ91

a20-BC

4
2
1
2
1

dASHER-LK INTL T NO. 10 .195-IN-ID
GCREW-MACH 4-40 .laa-IN-LG PAN-HD-POZI
IUT-HEX-DBL-CHAM a-32-THD .085-IN-THK
IUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
JASHER-FL NM NO. 4 .116-IN-ID .laa-IN-OD

98291
77250
a0120
74163
76654

3002-26

1
4
9
2
7

1
2
1
2
2

:OVER PC, M/N OUTPUT
iROUND LUG
:XTRACTOR PC
iCREW-MACH 4-40 .25-IN-LG PAN-HD-POZI
;CREW-MACH 2-56 .25-IN-LG PAN-HD-POZI

28480
28480
28480
77250
77250

85660-20049
85660-20068
a6701-40001

5
0
3
0
3

2
1
1
2
1

?HREADED INSERT-NUT 2-56 .06-IN-LG SST
iEAT SINK SGL DIP-COVERING U2
:.C. HEAT SINK
IASHER-LK HLCL NO. 2 .Oaa-IN-ID
.RANSISTOR NPN 2N5179 SI TO-72 PD=200MW

46384
13103
28480
77339
04713

KFS2-256
600JA-TOP
85660-00065

1
1
1
1
1

.RANSISTOR NPN 2N5179 SI TO-72 PD=200MW
'RANSISTOR NPN 2N5179 SI TO-72 PD=LOOMW
'RANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
'RANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
'RANSISTOR NPN SI TO-72 PD=200MW FT=4GHZ

04713
04713
04713
04713
25403

2N5179
2N5179
2N5179
2N5179

3
5
3
3
3

1
1
1
1
1

'RANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
'RANSISTOR PNP 2N3799 SI TO-la PD=360MW
.RANSISTOR PNP 2N3799 SI TO-la PD=360MW
'RANSISTOR PNP 2N290JA SI TO-la PD=400MW
.ESISTOR 100 +-I% .05W TF TC=O+-100

04713
04713
04713
04713
19701

2N5179

0698- 7248
0696-7243
0696-7205
0698-7223
0698-7248

1
6
0
2
1

1
1
1
1
1

lESISTOR
ZESISTOR
{ESISTOR
IESISTOR
ZESISTOR

3.16K +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
51.1 +-1% .05W TF TC=O+-100
287 +-I% .05W TF TC=O+-100
3.16K +-I% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

0698-7243
0757-0316
0698-7221

6
6
0

1
1
1

{ESISTOR 1.96K +-1% .05W TF TC=O+-100
{ESISTOR 42.2 +-1% .125W TF TC=O+-100
ZESISTOR 237 +-1% .05W TF TC=O+-100

19701
19701
19701

50635
SFR25H
50635

-

85660450266 Parts List
Page 2 of 3

*Indicates factory-selected value

lOM050K-1

500220
8942-3

2N5179

2N290JA
50635

HP Part Number 85660-60266
A7A4A2 M/N Output Board

Reference
Designation

HP Part
Number

C
0

Description

Qt!
-

Mfr
Code

Mfr Part
Number

AJA4A2RlO
AJA4A2Rll

0698-7188
0698-7212

E
5

1
1

RESISTOR 10 +-1% .05W TF TC=O+-100
RESISTOR 100 +-1% .05W TF TC=O+-100

19701
19701

50635
50635

AJA4A2R12
AJA4A2Rl3
AJA4A2R14
AJA4A2R15
AJA4A2R16

0757-0394
0698-7212
0757-1094
0757-1094
0757-1094

C
9
9
9
9

1
1
1
1
1

RESISTOR 51.1 +-I% .125W TF TC=O+-100
RESISTOR 100 +-1% .05W TF TC=O+-100
RESISTOR 1.4JK +-1X .125W TF TC=O+-100
RESISTOR 1.4JK +-1% .125W TF TC=O+-100
RESISTOR 1.4JK +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AJA4A2RlJ
AJA4A2RlB
AJA4A2R19
AJA4A2R20
AJA4A2R21

0757-1094
0698-7260
0698- 7248
0698-7223
0698-7223

9
7
1
2
2

1
1
1
1
1

RESISTOR 1.4JK +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 3.16K +-I% .05W TF TC=O+-100
RESISTOR 287 +-1% .05W TF TC=O+-100
RESISTOR 287 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
50635
50635
50635

AJA4A2R22
AJA4A2R23
AJA4A2R24
AJA4A2R25
AJA4A2R26

0698-7188
0698-7229
0698-7212
0698-7221
0698- 7243

a
a
9
0
6

1
1
1
1
1

RESISTOR 10 +-1% .05W TF TC=O+-100
RESISTOR 511 +-1% .05W TF TC=O+-100
RESISTOR 100 +-1% .05W TF TC=O+-100
RESISTOR 237 +-1X .05W TF TC=O+-100
RESISTOR 1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

AJA4A2R27
AJA4A2R2B
AJA4A2R29
AJA4A2R30
AJA4A2R31

0698-7248
0698-7229
0698- 7243
0698-7195
0698-7227

1
a
6
7
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

AJA4A2R32
AJA4A2R33
AJA4A2R34
AJA4A2R35
AJA4A2R36

0698-7188
0757-0280
0757-0279
0698-7223
0698-7210

a
3
0
2
7

1
1
1
1
1

RESISTOR 10 +-1% .05W TF TC=O+-100
RESISTOR IK +-1% .125W TF TC=O+-100
RESISTOR 3.16K +-1% .125W TF TC=O+-100
RESISTOR 287 +-1% .05W TF TC=O+-100
RESISTOR 82.5 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
50635
50635

AJA4A2R3 7
AJA4A2R38
AJA4A2R39
AJA4A2R40
AJA4A2R41

069& 7257
0698- 7260
0698-7229
0757-0440
0757-0199

1
1
1
1
1

RESISTOR 7.5K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .05W TF TC=O+-100
RESISTOR 511 +-1% .05W TF TC=O+-100
RESISTOR 7.5K +-1% .125W TF TC=O+-100
RESISTOR 21.5K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
SFR25H
SFR25H

AJA4A2R42
AJA4A2R43
AJA4A2R44
AJA4A2R45
AJA4A2R46

0698- 7263
0698-7277
0687-4721
0698-7260
0757-0447

3
3
5
7
4

1
1
1
1
1

RESISTOR
RESISTOR
?ESISTOR
7ESISTOR
?ESISTOR

19701
19701
01121
19701
19701

50635
5023R
EB4721
50635
SFR25H

AJA4A2R47
AJA4A2R48
AJA4A2Ul
AJA4A2U2
AJA4A2VRl

3698-7188
3757-0280
1826-0059
1820-3485
1902-3070

3
3
?
>
5

1
1
1
1
1

1ESISTOR 10 +-1X .05W TF TC=O+-100
7ESISTOR 1K +-1% .125W TF TC=O+-100
IC OP AMP GP TO-99 PKG
IC PRESCR ECL
IIODE-ZNR 4.22V 5% DO-35 PD=.4W

19701
19701
27014
04713
04713

50635
SFR25H
LM201AH
MC12090L

AJA4A2VR2
AJA4A2Wl

1902-3070
35660-60103

5
,

1
1

)IODE-ZNR 4.22V 5% DO-35 PD=.4W
JUMPER WIRE ASSEMBLY

04713
28480

3.16K +-1% .05W TF TC=O+-100
511 +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
19.6 +-1% .05W TF TC=O+-100
422 +-1% .05W TF TC=O+-100

13.3K +-1% .05W
51.1K +-1% .05W
4.JK 10% .5W CC
10K +-1% .05W TF
16.2K +-1% .125W

TF TC=O+-100
TF TC=O+-100
TC=0+647
TC=O+-100
TF TC=O+-100

85660-60103

-

*Indicates factory-selected value

85660-60266 Parts List
Page 3 of 3

TUNE
T O TPI
c-3)

A7A4AlAlC5
PWR

Jl
A!AP4AA:TAZ%l)
355-395 MHz
OUT

A7A4AlA2 M/N VCO Board Component Locations, 85660-60018

II

I

Jl
355-395
OUT

16

MP18

MP14
(2 PLACES)

Pl

%,;N

J3
355-395
IN

MP17
MHZ

MP19
(2 PLACES)(2

OUT

MPl5
PLACES)

Wl

TUNE

A7A4A2 M/N Output Board Component Locations, 85660-60192

MHZ

Jl
355-395
OUT

16

MP18

MP14
(2 PLACES)

PI

J2
M/N

J3
355-395
IN

6

4'
-1

MPl9
MHZ

MP19
(2 PLACES)

OUl

MP15
(2 PLACES)

c5F

b

TPl

TUNE

L

A7A4A2 M/N Output Board Component Locations, 85660-60239

MHZ

Jl
355-395
OUT

MP14
(2 PLACES)

J3
355-395
IN

MP17
MHZ

I\

MP19
(2 PLACES)(2

MP15
PLACES)

Wl
C23
a

TPl

%
TUNE

A7A4A2 M/N Output Board Component Locations, 85660-60266

MHZ

HP Part Number 85660-60020
A7A5 Reference Motherboard
Reference
Designation

HP Part C
Number D Qty

A7A5

85660-60020

A7A5Cl
A7A5C2
A7A5C3
A7A5C4
A7A5C5

0160-2437
0160-2437
0160-2437
0160-2437
0160-2437

A7A5C6
A7A5C7
A7A5C6
A7A5C9
A7A5ClO

2

Mfr
Code

Description

Mfr Part
Number

1

REFERENCE MOTHERBOARD
(SERIAL PREFIXES: Z~IOA-2607~)

28480

85660-60020

1
1
1
1
1

1
1
1
1
1

CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU

5000PF
5000PF
5000PF
5000PF
5000PF

+80
+80
+80
+80
+80

-20%
-20%
-20%
-20%
-20%

2OOV
2OOV
2OOV
2OOV
2OOV

33095
33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022

0160-2437
0160-2437
0160-2437
0160-2437
0160-2437

1
1
1
1
1

1
1
1
1
1

CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU

5000PF
SOOOPF
5000PF
5000PF
5000PF

+80
+80
+60
+80
+80

-20%
-20%
-20%
-20%
-20%

2OOV
2OOV
2OOV
2OOV
2OOV

33095
33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022

A7A5Cll
A7ASC12
A7A5C13
A7A5C14
A7A5MPl

0160-2437
0160-2437
0160-6211
0160-6211

1
1
7
7

1
1
1
1

CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
NOT ASSIGNED

5000PF +80 -20% 2OOV
5000PF +80 -20% 2OOV
1OPF 20% 2OOV CER
1OPF 20% 2OOV CER

33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-779-003-X5F-100M
54-779-003-X5F-100M

A7A5MP2
A7A5MP3
A7A5MP4
A7A5MP5
A7A5MP6

0360-0124
2190-0007
2190-0087
2420-0003
2580-0002

3
2
8
7
4

5
2
12
2
12

A7A5MP7
A7A5MP8
A7A5MP9
A7A5MPlO
A7A5MP18

85660-00037
85660-00050
85660-00051
0890-0983
9170-0029

5
2
3
5
3

1
1
1
1
12

INSULATOR FOR XA7A4
INSULATOR FOR XA7A2
INSULATOR FOR XA7Al
TUBING-HS .125-IN-D/.062-IN-RCVD
CORE-SHIELDING BEAD

28480
28480
28480
06090
02114

85660-00037
85660-00050
85660-00051
VERSAFIT-l/8-BLK
56-590-65A2/4A

A7A5XA7Al
A7A5XA7A2
A7A5XA7A3
A7A5XA7A4
A7A5XA7A5Pl

1251-4423
1251-4174
1251-2035
1251-5020
5060-0112

3
1
9
8
8

1
1
1
1
1

CONNECTOR-PC EDGE
CONNECTOR-PC EDGE 15-CONT/ROW
CONNECTOR-PC EDGE 15-CONT/ROW
CONNECTOR-PC EDGE 15-CONT/ROW
CONNECTOR, 15-CONT DIP

26742
26742
26742
26742
28480

190-275-01
220-624-03
190-282-01
5060-0112

A7A5XA7A5P2

5060-0112

8

1

CONNECTOR, 15-CONT DIP

28480

5060-0112

CONNECTOR-SGL CONT PIN .04-IN-BSC-SZ RND
WASHER-LK INTL T NO. 6 .141-IN-ID
WASHER-LK HLCL NO. 8 .168-IN-ID
NUT-HEX-OBL-CHAM 6-32-THD .094-IN-THK
NUT-HEX-DBL-CHAM 8-32-THD .085-IN-THK

l-ROW
Z-ROWS
l-ROW

*Indicates factory-selected value

97300
78189
78553
80120
80120

1906-00-00-2580
KANTLINK

85660-60020 Parts List
Page 1 of 1

HP Part Number 85660-60265
A7A5 Reference Motherboard
Mfr
Code

HP Part
Number

2
3

A7A5

15660-60265

2

1

?EFERENCE MOTHERBOARD
(SERIAL PREFIXES: 2611~)

A7A5Cl
A7A5C2
A7A5C3
A7A5C4
A7A5C5

1160-2437
1160-2437
1160-2437
1160-2437
1160-2437

1
1
1
1
1

1
1
1
1
1

:APACITOR-FDTHRU
:APACITOR-FDTHRU
:APACITOR-FDTHRU
:APACITOR-FDTHRU
:APACITOR-FDTHRU

5000PF +BO -20%
5000PF +BO -20%
5000PF +BO -20%
5000PF +BO -20%
5000PF +BO -20%

A7A5C6
A7A5C7
A7A5CB
A7A5C9
A7A5ClO

'160-2437
160-2437
1160-2437
1160-2437
1160-2437

1
1
I
1
1

1
1
1
1
1

:APACITOR-FDTHRU
:APACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU

5000PF +BO
5000PF +BO
5000PF +BO
5000PF +BO
5000PF +BO

A7A5Cll
A7A5C12
A7A5C13
A7ASC14
A7A5C15

1160-2437
1160-2437
1160-6211
)160-6211
)160-2437

I
I
7
7
1

1
1
1
1
1

CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU
CAPACITOR-FDTHRU

A7A5MPl
A7A5MP3
A7A5MP4
A7A5MP5
A7A5MP6

1190-0007
1190-0087
1420-0003
1580-0002

2
8
7
4

A7A5MP7
A7A5MPB
A7A5MP9
A7A5MPlO
A7A5MPlB

15660-00037
15660-00050
;5660-00051
1890-0983
~170-0029

A7A5XA7Al
A7A5XA7A2
A7A5XA7A3
A7A5XA7A4
A7A5XA7A5Pl
A7A5XA7A5P2

Reference
Designation

JtY
-

Description

Mfr Part
Number

28480

85660-60020

2OOV
2OOV
2OOV
2OOV
2OOV

33095
33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022

2OOV
2OOV
2OOV
2OOV
2OOV

33095
33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022
54-713-033-X5V-5022

5000PF +BO -20% 2OOV
5000PF +BO -20% 2OOV
1OPF 20% 2OOV CER
1OPF 20% 2OOV CER
500PF +BO -20% 2OOV

33095
33095
33095
33095
33095

54-713-033-X5V-5022
54-713-033-X5V-5022
54-779-003-X5F-100M
54-779-003-X5F-100M
54-713-033-x5v-5022

1
1
1
1

NOT ASSIGNED
VIASHER-LK INTL T NO. 6 .141-IN-ID
rlASHER-LK HLCL NO. 8 .168-IN-ID
NUT-HEX-DBL-CHAM 6-32-THD .094-IN-THK
NUT-HEX-DBL-CHAM B-32-THD .085-IN-THK

78189
78553
80120
80120

1906-00-00-2580
KANTLINK

5
2
3
5
3

1
1
1
1
1

INSULATOR FOR XA7A4
INSULATOR FOR XA7A2
INSULATOR FOR XA7Al
TUBING-HS .125-IN-D/.062-IN-RCVD
:ORE-SHIELDING BEAD

28480
28480
28480
06090
02114

85660-00037
85660-00050
85660-00051
VERSAFIT-l/B-BLK
56-590-65A2/4A

251-4423
251-4174
,251-2035
1251-5020
iO60-0112

3
1
,o
E
E

1
1
1
1
1

:ONNECTOR-PC EDGE
:ONNECTOR-PC EDGE 15-CONT/ROW l-ROW
LONNECTOR-PC EDGE 15-CONTIROW Z-ROWS
CONNECTOR-PC EDGE 15-CONT/ROW I-ROW
CONNECTOR, 15-CONT DIP

26742
26742
26742
26742
28480

190-275-01
220-624-03
190-282-01
5060-0112

iO60-0112

E

1

CONNECTOR, 15-CONT DIP

28480

5060-0112

-20%
-20%
-20%
-20%
-20%

-

*Indicates factory-selected value

85660-60265 Parts List
Page 1 of 1

M

/

N

O;;‘,W[ - - - -- c9

c7

C6

C8

1
I
Cl3

Cl4

XA7A5P 1

Cl

c2

Cl0

Cl1

Cl2

Circuit

Side

Component

Side

XA7A4
M/N OUTPUT

M / N 0’XA7A3
DET

rc XA7A5P1 1
-

-

1OOMHz V C X O

A7A5 Reference Motherboard Component Locations, 85660-20020

M

/

N

- 1
I----I

““,;‘,“A;[ - - - -

C9

c15

C6

-

c7

Ct3

Cl3

Cl4

100 MHz VCXO

-

Cl

c2

-

Cl0

Cl1

Cl2

Circuit

Side

Component

Side

XA7A4
M/N OUTPUT

M / N 0XA7A3
DET

>r XA7A5r 1
-

-

1OOMHz V C X O

-

-

-

REF 0 D E T

-

A7A5 Reference Motherboard Component Locations, 85660-60265

A8/A9

A8 Rectifier, Circuit Description
Power is supplied to the instrument through the A9 Power Line Module, which contains
the line voltage selector, to the primary of transformer Tl. Three bridge rectifiers and one
center-tapped secondary provide the rectified outputs.
Diodes CR1 through CR4 form a bridge rectifier that provides approximately 55 V for the
-40 V supply, part of the A18 Negative Regulator. CR5 through CR8 form a bridge rectifier
that provides about 20 V for the -10 V supply and the -5.2 V supply, also part of the Al8
Negative Regulator.
Diodes CR9 through CR12 form a bridge rectifier that provides approximately 30 V for the
i-22 V supply, part of the A8 Rectifier, and also the i-20 V and i-12 V supplies, part of the
Al7 Positive Regulator. Diodes CR13 and CR14 form a full-wave rectifier that provides about
12 V for the i-5.2 V supply, part of the Al7 Positive Regulator.
The +22 V (STANDBY) supply is an 18 V three-terminal regulator Ul which has its common
terminal biased at +4 V by Rl, DSl, and R2. DSl is an LED indicator that indicates the
presence of +22 V. VRl and CR16 form a crowbar circuit for overvoltage protection. Fuse Fl
provides overcurrent protection. The regulator Ul is also internally protected against short
circuits on its output. The +22 V supply is on whenever the instrument is connected to an ac
line outlet.
The instrument is also protected against line overvoltages by an input crowbar circuit
consisting of VR2 and CR18. This crowbar causes the line fuse to blow if an overvoltage
condition occurs on the line.
Filter capacitors and bleeder resistors for all the switched power supplies are located on the
A23 Motherboard. The filter capacitors for the +22 V (STANDBY) supply are A8C6 and
A6AlO C8. The location of fuses in the RF Section is shown in Figure 1.

A8JA9

1

RF Section Internal Fuse Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

d

Warning

9

Remove ac line cord from both instruments before proceeding with this
procedure.

1. Position instrument upside-down as shown in view A.
2. Remove feet @ from rear of RF Section by removing screws @ show in view A.
3. Remove bottom cover by loosening screw @ and pulling cover toward rear of instrument.
4. Location of fuses is shown in view B.

Fl
L

+22V
,

Fl +12V 1A
F2 +2OV 3 A
F 3 +5.2V 6 A

1A
,

A8
RECTIFIER

Figure 1. Internal Fuse Replacement

2 A8/A9

2.5A

F 2 - 4 0 V 1.5A
F 3 - l O V 5 A

-

-

Al7
POS REG

VIEW B

VIEW A

Fl -5.2V

Al8
NEG REG

Transformer Replacement
Note

For location of hardware and cables referred to in the procedure, see Figure 2.

1. Remove ac line cords, IF-Display Section, and RF Section bottom cover, top cover, and
right side cover.
2. Remove front panel. (See A5 Front Panel section for A5 Front Panel Removal procedure.)
3. Remove A6 RF Module. (See A6 section for A6 RF Module removal procedure.)
4. Remove seven screws Q).
5. To avoid losing washers and nuts from screws @ into the interior of the RF Section, it is
recommended to do the following:
a. Set the RF Section on its right side with transformer on bottom.
b. Set the RF Section partially off the table so that a screwdriver can reach the remaining
four mounting screws.
c. For each screw @ hold nut with needlenose pliers while removing screw. Mounting
screws on motherboard side can be accessed through small opening @ on motherboard.
d. When installing new transformer, set RF Section on its side as described in steps 5a and
5b. For each mounting screw, align nut and washers with hole, and while holding nut
with needlenose pliers, tighten screw.
e. Tighten remaining seven screws (iJ to secure Transformer to RF Section.
6. Replace RF Module.
7. Replace front panel.
8. Replace covers, attach IF-Display section to RF Section, and replace ac line cords.

AalA

3

CLE

I

U

I

(2 PLACES)

Figure 2. Transformer Replacement

4 A8/A9

Power Transistor Replacement (Rear RF Cover Removal)
Note

For location of hardware and cables referred to in this procedure, see Figure 3.

With ac line cords and RF Section bottom cover removed, proceed as follows:
1. Loosen rear cover by removing five screws Q).
2. Power Transistors can now be easily replaced.

VIEW A

VIEW B

Figure 3. Power Transistor Replacement

A8fA9 5

HP Part Number 85660-60196
A8 Rectifier

Reference
Designation

HP Part
Number

c
c

A8

85660-60196

:

1

RECTIFIER BOARD ASSEMBLY

ABC1
A8C2
A8C3
A8C4
A8C5

0160-2055
0160-2055
0160-2055
0160-4084
0180-0230

E
c
E
E
C

1
1
1
1
1

A8C6
A8C7
A8C8
A8C9
A8ClO

0180-3476
0180-0197
0160-4005
0160-4005
0160-4005

2
E
?
2
c

A8Cll
A8C12
A8C13
A8CRl
A8CR2

0160-4005
0160-3638
0180-1731
1901-0662
1901-0662

A8CR3
A8CR4
A8CR5
A8CR6
A8CR7

Mfr
Code

Description

B!
-

Mfr Part
Number

28480

85660-60196

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAP-FXD O.luF 50 V
CAP-FXD 1uF 50 V TA

56289
56289

805-504 Y5V 1032
805-504 Y5V 1032
805-504 Y5V 1032
lC20X7R104M0508
150D105X0050A2-DYS

1
1
1
1
1

CAP-FXD 22uF 35 V AL-ELCTLT
CAPACITOR-FXD 2.2UF+-10% LOVDC
CAPACITOR-FXD 1UF +-20% 1OOVDC
CAPACITOR-FXD 1UF +-20% 1OOVDC
CAPACITOR-FXD 1UF +-20% 1OOVDC

TA
CER
CER
CER

56289
04222
04222
04222

SM35T22
1500225X9020A2-OYS
SR401E105MAAH
SR401E105MAAH
SR401E105MAAH

?
E
E
:
?

1
1
1
1
1

CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 0.22uF 200 V
CAPACITOR-FXD 4.7UF+-10% 5OVDC TA
DIODE-PWR RECT 1OOV 6A
DIODE-PWR RECT 1OOV 6A

04222
04222
56289
04713
04713

SR401E105MAAH
SR402E224ZAAH
150D475X905082-DYS
MR751
MR751

1901-0662
1901-0662
1901-0662
1901-0662
1901-0662

?
?
?
3
?

1
1
1
1
1

DIODE-PWR
DIODE-PWR
DIODE-PWR
DIODE-PWR
DIODE-PWR

RECT
RECT
RECT
RECT
RECT

1OOV
1OOV
1OOV
1OOV
1OOV

6A
6A
6A
6A
6A

04713
04713
04713
04713

04713

MR751
MR751
MR751
MR751
MR751

A8CR8
A8CR9
A8CRlO
A8CRll
A8CR12

1901-0662
1901-0662
1901-0662
1901-0662
1901-0662

3
?
?
?
?

1
1
1
1
1

DIODE-PWR
DIODE-PWR
DIODE-PWR
DIODE-PWR
DIODE-PWR

RECT
RECT
RECT
RECT
RECT

1OOV
1OOV
1OOV
1OOV
1OOV

6A
6A
6A
6A
6A

04713
04713
04713
04713
04713

MR751
MR751
MR751
MRJ51
MR751

A8CR13
A8CR14
A8CR16
A8CR17
A8CR18

1901-0765
1901-0765
1884-0018
1901-0662
1884-0018

7
7
E
3
5

1
1
1
1
1

DIODE-PWR RECT lN5812 50V 20A 35NS DO-4
DIODE-PWR RECT lN5812 50V 20A 35NS DO-4
THYRISTOR-SCR 2N4186 VRRM=200
DIODE-PWR RECT 1OOV 6A
THYRISTOR-SCR 214186 VRRM=200

30043
30043
04713
04713
04713

lN5812
lN5812
2N4186
MR751
2N4186

A8CR19
A8CR20
A8DSl
A8Fl
A8MPl

1901-0743
1901-0743
1990-0487
2110-0001

1
1
7
8

1
1
1
1

DIODE-PWR RECT lN4004 400V 1A DO-41
DIODE-PWR RECT IN4004 400V 1A DO-41
LED-LAMP LUM-INT=2MCD BVR=5V
FUSE 1A 250V NTD FE UL
NOT ASSIGNED

71744
71744
28480
75915

lN4004
lN4004
HLMP-1401
312 001

A8MP2
A8MP3
A8MP4
A8MP6
A8MP7

0590-0519
1200-0081
1251-0600
2110-0726
2200-0107

7
4
C
4
6

2
2
1
2
2

THREADED INSERT-NUT 4-40 .062-IN-LG STL
INSULATOR-FLG-BSHG NYLON
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
FUSEHOLDER-CLP-TYP.25D-FUSE
SCREW-MACH 4-40 .375-IN-LG PAN-HD-POZI

46384
26365
27264
13060
77250

KF2-440-ET
974 307
16-06-0034
1115-0597T

A8MP8
A8MP9
A8MPlO
A8MPll
A8MP12

?740-0001
3340-1114
3151-0011
5000-9043
5040-6843

3
1
2
6
2

2
1
1
1
1

NUT-HEX-DBL-CHAM lo-32-THD .109-IN-THK
INSULATOR-XSTR THRM-CNDCT TO-3
WIRE 18AWG 1X18
PIN
EXTRACTOR

73734
55285
92194
28480
28480

K-4-05
296
5000-9043
5040-6843

A8MP13

36701-00018

4

1

HEATSINK

28480

86701-0018

RECTIFIER

-

*Indicates factory-selected value

85660-60196 Parts List
Page 1 of 2

HP Part Number 85660-60196
A8 Rectifier
Reference
Designation

HP Part
Number

c
0

Description

21
-

Mfr
Code

Mfr Part
Number

A8MP14
A8MP15

1050-0876
1340-1077

E
c

2
2

WASHER MICA .560 IN-ID
INSULATOR HEATSINK 660

86928

5624-53-5

A8Rl
A8R2

1698-0083
!lOO-3052

E
4

1
1

RESISTOR 1.96K 1% .125W TF TC=O+-100
RESISTOR-TRMR 50 10% TKF SIDE-ADJ 17-TRN

19701
73138

SFR25H
89PR50

A8R3
A8R4
A8R5
A8R6*
A8R7

1757-0346
)698-3444
1698-3447
)698-3442
1698-3558

2
1
4
9
e

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

91637
19701
19701
19701
19701

CMF-55-1, T-l
SFR25H
SFR25H
SFR25H
SFR25H

A8Ul
A8VRl
A8VR2

.826-0423
.902-3263
.902-0197

4
e
1

1
1
1

IC V RGLTR-ADJ-POS 1.2/37V TO-3 PKG
DIODE-ZNR 24.9V 2% DO-35 PD=.4W
DIODE-ZNR 82.5V 5% PD=lW IR=5UA

27014
04713
04713

LM317K

10 +-1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
422 1% .125W TF TC=O+-100
237 1% .125W TF TC=O+-100
4.02K 1% .125W TF TC=O+-100

-

85660-60196 Parts List
Page 2 of 2

*Indicates facto y-selected value

1
19

PI

18
36

A6 Rectifier Component Locations, 65660-60196

A10

AlOAlWl

2

AlOA8W2

AIOA
’ AlOA8Wl

I

\

\

\

I

1

/

w5

W4

w7
(13 PLACES)

(43 PLACES)

Figure 1. A10 20/30 Synthesizer, Parts Identification (1 of 3)

A10 1

(2 PLACES)

(43 PLACES)

I
I

Figure 1. A10 20/30 Synthesizer, Parts identification (2 of 3)

2 A10

Item

HP Part
Number

CD

Description

Mfr
Code

1

8566626052

6

COVER, PC BOARD (AlOAl PLLl VCO)

28480 85660-2005:

2

8566@20053

7

COVER, PC BOARD (AlOA2 PLLl DIVIDER)

28480 85660-2005:

3

8566CL20054

8

COVER, PC BOARD (AlOA3 PLLl IF)

28480 85660-20054

4

8566CL20055

9

COVER, PC BOARD (AlOA4 PLW UP CONVERTER)

28480 85660-2005:

5

85660-20056

0

COVER, PC BOARD (AlOA5 PLL2 VCO)

28480 85660-20056

6

85660-20057

1

COVER, PC BOARD (AlOA6 PLL2 ,#I DET)

28480 85660-20057

7

8566&20058

2

COVER, PC BOARD (AlOA7 PLL2 DIVIDER)

28480 85660-20058

s

8566@20059

3

COVER, PC BOARD (AlOA8 PLL2 DISCRIMINATOR)

28480 85660-20059

9

0400-0009

9

GROMMET, RUBBER (FOR AlOASW2)

28480 0400-0009

LO

2200-0105

4

SCREW, MACH, 4-40, .312-IN LG, PAN HD

28480 2200-0105

11

86701-46601

9

EXTRACTOR, PC BOARD

28480 86701-40001

12

8566CL20190

3

HOUSING, 20/30 SYNTHESIZER

28480 85666-20190

13

1400-0510

8

CLAMP, CABLE

28480 1400-0510

Mfr Part
Number

Figure 1. A10 20/30 Synthesizer, Parts Identification (3 of 3)

A10 3

AIOAI
AIOAI Phase Lock Loop 1 (PLLI) Voltage-Controlled Oscillator
(VCO), Circuit Description
AlOAl contains the loop amplifier and voltage-controlled oscillator (VCO) for the PLLl phase
lock loop. The PLLl VCO tunes from 199.9 to 300 MHz (start frequencies of 200.000001
to 300.000000 MHz) for a range of about 4 V to 16 V tuning of the varactor. The PLLl
VCO drives a counter which divides the frequency by 10. The counter output goes through a
switch and a filter to the 20/30 output. The PLLl VCO is turned off in spans greater than
n xl00 kHz but less than or equal to n x 5 MHz to prevent spurious responses.

Loop Amplifier @
The loop amplifier consists of a low-noise differential pair input stage, Q9 and &lo, and
an operational amplifier U6A. Feedback ( ac ) is p rovided by C34 and R29. The output
of the amplifier goes through a programmable ac voltage divider consisting of R31, R32,
R33, R34, R35 with R36 and C36. The signal is filtered by a 40 kHz low-pass filter which
has two notches tuned to reject the 50 kHz subharmonics created by fractional-n division
(5 MHz i 100).
U6B compares the dc varactor tune voltage to about $17.5 V. If the tune voltage goes higher
than this, U6B switches and pulls it down to about +5 V. Hysteresis in the switching point
of U6B provided by R24 keeps U6B from switching back to the original state until the tune
voltage reaches about +5 V.
Q2 keeps the tune voltage from going below about +3 V. This is to ensure that the PLLl
VCO always oscillates and the varactors do not become forward biased in spans where PLLl
is active.

Gain Switch @
U5 latches the four most significant bits of the programming of the PLLl fractional-n divider.
These are level translated by U4 which drives four FET switches. By changing the voltage
divider in @ in this manner, a constant loop bandwidth of 5 kHz is achieved.

200 to 300 MHz VCO @ and Output Amplifier @l
The PLLl VCO consists of Qll which operates in the grounded-base mode. The resonator is
principally CR3, CR4, and L4. Feedback is accomplished with L5, R16, and C17. In spans
greater than n x 100 kHz but less than or equal to n x 5 MHz, the VCO is turned off by
forward biasing the varactors. Q5 is a common-base buffer amplifier. The output of the VCO
is applied to Q4 where it is amplified and applied to AlOA3 PLLl IF and the Divide by 10 0.
In spans of n x 100 kHz, the VCO is tuned as low as 199.000200 MHz.

AlOAl

1

Output Switch @
The output switch is U2 which is a quad ECL NOR gate. For frequency spans greater than
n x 100 kHz, but less than or equal to n x 5 MHz, the switch input to R3 is TTL low. U2B
and U2C are on while U2D is off. For all other spans, the opposite states exist. This has the
effect of switching either the output of U3 divider or Jl to the 20/30 loop output J2.

Divide by IO @
Q3 is a common-emitter amplifier which drives U3 through a high-pass filter. U3 is an ECL
divide by 10 counter which generates the necessary 19.99 MHz to 30 MHz from the PLLl
vco output.

2 AlOAl

HP Part Number 85660-60131
AlOAl PLL 1 VCO
HP Part
Number

C
c

AlOAl

85660-60131

f

1

BOARD ASSEMBLY, PLLl VCO

28480

85660-60131

AlOAlCl
AlOAlC2
AlOAlC3
AlOAlC4
AlOAlCS

0160-0574
0160-0574
0160-3875
0160-0574
0160-3877

:
3
3
3
e

1
1
1
1
1

CAPACITOR-FXD .022UF +-20X 1OOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD 22PF +-5% LOOVDC CER 0+-30
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD 1OOPF +-20% LOOVDC CER

04222
04222

SR201C223MAAH
SR201C223MAAH
FD12COG2D220J
SR201C223MAAH
SR202ClOlMAAH

AlOAlC6
AlOAlC7
AlOAlCB
AlOAlC9
AlOAlClO

0160-0574
0160-3875
0160-0574
0160-3878
0160-3874

3
3
3
e
2

1
1
1
1
1

CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD 22PF +-5% 200VDC CER 0+-30
CAPACITOR-FXD .022UF +-20X 1OOVDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 1OPF +-.5PF ZOOVDC CER

AlOAlCll
AlOAlCl2
AlOAlC13
AlOAlC14
AlOAlClS

0160-3878
0160-3874
0160-3874
0160-3878
0160-3874

6
2
2
6
2

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAPACITOR-FXD 1OPF
CAPACITOR-FXD 1OPF
CAP-FXD 1OOOpF 100
CAPACITOR-FXD 1OPF

AlOAlC16
AlOAlC17
AlOAlC18
AlOAlC19
AlOAlC20

0160-3874
0160-3875
0160-4084
0160-0574
0160-0574

2
3
8
3
3

1
1
1
1
1

CAPACITOR-FXD 1OPF +-.5PF ZOOVDC CER
CAPACITOR-FXD 22PF +-5X POOVDC CER 0+-30
CAP-FXD O.luF 50 V
CAPACITOR-FXD .022UF +-20X 1OOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER

56289
04222
04222

FD12COG2DlOOD
FD12COG2D220J
lC20X7R104M050B
SR201C223MAAH
SR201C223MAAH

AlOAlCEl
AlOAlC22
AlOAlC23
AlOAlC24
AlOAlC25

0160-4953
0160-4953
0160-4953
0160-4951
0160-4952

0
0
0
8
9

1
1
1
1
1

CAPACITOR-FXD .027UF
CAPACITOR-FXD .027UF
CAPACITOR-FXD .027UF
CAPACITOR-FXD .033UF
CAPACITOR-FXD .039UF

04222
04222
04222
04222
04222

SR405A273JAAH
SR405A273JAAH
SR405A273JAAH
SR405A333JAAH
SR405A393JAAH

AlOAlC26
AlOAlC27
AlOAlC28
AlOAlC29
AlOAlC30

0160-0158
0180-0116
0180-0116
0180-0291
0180-0197

9
1
1
3
8

1
1
1
1
1

CAP-FXD 56OOpF 200 V POLYE-FL
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD lUF+-10% 35VDC TA
CAPACITOR-FXD 2.2UF+-10% LOVDC TA

84411
56289
56289
56289
56289

HEW-238M
1500685X903582-DYS
150D685X903582-DYS
150D105X9035A2-DYS
150D225X9020A2-DYS

AlOAlC31
AlOAlC32
AlOAlC33
AlOAlC34
AlOAlC35

0160-4953
0160-4298
0160-4951
0160-4951
0160-0574

0
6
8
8
3

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

04222

SR405A273JAAH
815-250V X5R 472M
SR405A333JAAH
SR405A333JAAH
SR201C223MAAH

AlOAlC36
AlOAlCRl
AlOAlCRL
AlOAlCR3
AlOAlCR4

0180-0197
1901-0040
1901-0040
0122-0085
0122-0085

8
1
1
1
1

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% LOVDC TA
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-VVC 2.2PF 7% C3/C25-MIN=4.5
DIODE-VVC 2.2PF 7% C3/C25-MIN=4.5

56289
71468
71468
so545
so545

152208(B)
lS2208(B)

AlOAlCR5
AlOAlCR6
AlOAlCR7
AlOAlJ2
AlOAlJ3

1901-0040
1901-0040
1901-0040
1250-2112
1250-2112

1
1
1
1
1

1
1
1
1
1

DIODE-SWITCHING 30V
DIODE-SWITCHING 30V
DIODE-SWITCHING 30V
CONNECTOR-RF SM8 M
CONNECTOR-RF SMB M

71468
71468
71468
98291
98291

051-047-0259-220
051-047-0259-220

AlOAlLl

9100-2257

6

1

INDUCTOR RF-CH-MLD 820NH +-lo% .105D-INX

32159

1A 8203M +-lo%

Reference
Designation

Mfr
Code

Description

a!
-

V
+-.5PF ZOOVDC CER
+-.5PF 200VDC CER
V
+-.5PF 200VDC CER

.027UF
4700PF
.033UF
.033UF
.022UF

+-5X
+-5%
+-5%
+-5X
+-5x

50VDC
50VDC
50VDC
50VDC
SOVDC

CER
CER
CER
CER
CER

+-5% SOVDC CER
+-20% 250VDC CER
+-5% 50VDC CER
+-5% 50VDC CER
+-20% 1OOVDC CER

50MA 2NS DO-35
50MA 2NS DO-35
50MA 2NS DO-35
SGL-HOLE-FR 50-OHM
SGL-HOLE-FR 50-OHM

04222
04222
04222
04222
04222

04222

04222

04222
04222
04222

Mfr Part
Number

SR201C223MAAH
FD12COG2D220J
SR201C223MAAH
SR201ClD2MAAH
FD12COG2DlOOD
SR201C102MAAH
FD12COG2DlOOD
FD12COG2DlOOD
SR201C102MAAH
FD12COG2DlOOD

150D225X9020A2-DYS

-

*Indicates factory-selected value

85660-60131 Parts List
Page 1 of 4

HP Part Number 85660-60131
AlOAl PLL 1 VCO
Reference
Designation

HP Part
Number

Description

-

Mfr
Code

Mfr Part
Number

AlOAlL2
AlOAlL3
AlOAlL4
AlOAlL5

9100-2891
9100-2257
85660-80004
85660-80005

4
6
4
5

1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

RF-CH-MLD 50NH +-lo% .105D-INX.
RF-CH-MLD 820NH +-lo% .105D-INX
30NH
4NH

24226
32159
28480
28480

AlOAlL6
AlOAlL7
AlOAlL8
AlOAlL9
AlOAlLlO

9100-2258
85660-80008
85660-80008
9100-1647
9100-1788

7
a
a
6
6

1
1
1
1
1

INDUCTOR RF-CH-MLD 1.2UH +-IO% .105D-INX
INDUCTOR-ADJ .4MH
INDUCTOR-ADJ .4MH
INDUCTOR RF-CH-MLD 470UH +-5% .2D-INX.45
:ORE-FERRITE CHOKE-WIDEBAND IMP:680

99800
28480
28480
99800
02114

1025-22
85660-80008
85660-80008
2500-12
VK200 20/48

AlOAlLll
AlOAlLl2
AlOAlLl3
AlOAlL14
AlOAlL15

9100-1788
9100-1788
9100-2258
9100-2254
9100-2254

6
6
7
3
3

1
1
1
1
1

:ORE-FERRITE CHOKE-WIDEBAND IMP:680
:ORE-FERRITE CHOKE-WIDEBAND IMP:680
INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 390NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 390NH +-lo% .1050-INX

02114
02114
99800
24226
24226

VK200 20/48
VK200 20/48
1025-22
lOM390K
lOM390K

AlOAlL16
AlOAlMPl
AlOAlMP3
AlOAlMP4
AlOAlMP5

9100-2247

4

1

24226

1OMlOOK

2200-0101
2950-0078
2190-0124

0
9
4

2
3
6

INDUCTOR RF-CH-MLD 1OONH +-lo% .105D-INX
VOT ASSIGNED
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
YUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
-0CK WASHER .195 ID

77250
74163
28480

500220
2190-0124

AlOAlMP6
AlOAlMP7
AlOAlMP8
AlOAlMP9
AlOAlQl

85660-00038
85660-20052
85660-20068
86701-40001
1855-0420

6
6
4
9
2

1
1
3
1
1

SHIELDING CAN
:OVER PC PLLl VCO
SROUND LUG
:XTRACTOR, PC
TRANSISTOR J-FET 2N4391 N-CHAN D-MODE TO

28480
28480
28480
28480
17856

85660-00038
85660-20052
85660-20068
86701-40001
2N4391

AlOAlQ2
AlOAlQ3
AlOAlQ4
AlOAlQ5
AlOAlQ6

1854-0023
1854-0345
1854-0345
1854-0345
1855-0420

9
8
8
8
2

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN SI TO-18 PD=360MW
NPN 2N5179 SI TO-72 PD=200MW
NPN 2N5179 SI TO-72 PD=EOOMW
NPN 2N5179 SI TO-72 PD=EOOMW
J-FET 2N4391 N-CHAN D-MODE TO

25403
04713
04713
04713
17856

2N5179
2N5179
2N5179
2N4391

AlOAlQ7
AlOAlQ8
AlOAlQ9
AlOAlQlO
AlOAlQll

1855-0420
1855-0420
1854-0023
1854-0023
1854-0345

2
2
9
9
8

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET 214391 N-CHAN D-MODE TO
J-FET 2N4391 N-CHAN D-MODE TO
NPN SI TO-18 PD=360MW
NPN SI TO-18 PD=360MW
NPN 2N5179 SI TO-72 PD=ZOOMW

17856
17856
25403
25403
04713

2N5179

AlOAlRl
AlOAlRP
AlOAlR3
AlOAlR4
AlOAlR5

0757-0395
0757-0280
0757-0317
0757-0441
0757-0280

1
3
7
8
3

1
1
1
1
1

[ESISTOR
tESISTOR
{ESISTOR
{ESISTOR
tESISTOR

56.2 +-1X .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
1.33K +-1% .125W TF TC=O+-100
8.25K +-1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR6
AlOAlR7
AlOAlR8
AlOAlR9
AlOAlRlO

0757-0123
0757-0441
0757-0280
0698-3444
0757-0460

3
8
3
1
1

1
1
1
1
1

tESISTOR
tESISTOR
tESISTOR
tESISTOR
lESISTOR

34.8K +-1% .125W
8.25K +-1% .125W
1K +-1% .125W TF
316 1% .125W TF
61.9K +-1% .125W

TF TC=O+-100
TF TC=O+-100
TC=O+-100
TC=O+-100
TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlRll
AlOAlRlE
AlOAlR13
AlOAlR14

0757-0280
0698-0082
0757-0428
0757-0280

3
7
1
3

1
1
1
1

lESISTOR
lESISTOR
lESISTOR
lESISTOR

1K +-I% .125W TF
464 1% .125W TF
1.62K +-1% .125W
1K +-1% .125W TF

TC=O+-100
TC=O+-100
TF TC=O+-100
TC=O+-100

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

-

8566040131 Parts List
Page 2 of 4

*Indicates factory-selected value

1 OMOSOK- 1
1A 8203M +-lo%
85660-80004
85660-80005

2N4391
2N4391

HP Part Number 85660-60131
AlOAl PLL 1 VCO
Reference
Designation

HP Part
Number

C
II M

Mfr
Code

Description

Mfr Part
Number

AlOAlR15

0757-0402

1

1

RESISTOR 110 +-1% .125W TF TC=O+-100

19701

SFR25H

AlOAlR16
AlOAlR17
AlOAlR18
AlOAlR19
AlOAlR20

0698-7195
0757-0280
0698-3155
0757-0428
0757-0395

7
3
1
1
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19.6 +-1% .05W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
4.64K 1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100
56.2 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR21
AlOAlR22
AlOAlR23
AlOAlR24
AlOAlR25

0698-3438
0698-3438
0757-0458
0757-0289
0757-0289

3
3
7
2
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

147 1% .125W TF
147 1% .125W TF
51.1K +-1% .125W
13.3K +-1% .125W
13.3K +-1% .125W

TC=O+-100
TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR26
AlOAlR27
AlOAlR28
AlOAlR29
AlOAlR30

0757-0416
0757-0123
0757-0123
0757-0440
0757-0440

7
3
3
7
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
7.5K +-1% .125W TF TC=O+-100
7.5K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR31
AlOAlR32
AlOAlR33
AlOAlR34
AlOAlR35

0757-0465
0757-0289
0698-3159
0757-0290
0757-0458

6
2
5
5
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1OOK +-1% .125W TF TC=O+-100
13.3K +-1% .125W TF TC=O+-100
26.1K 1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
51.1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR36
AlOAlR37
AlOAlR38
AlOAlR39
AlOAlR40

0757-0402
0757-0442
0757-0123
0757-0416
0757-0416

1
9
3
7
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

110 +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR41
AlOAlR42
AlOAlR43
AlOAlR44
AlOAlR45

0757-0416
0698-7188
0757-0280
0757-0280
0757-0280

7
8
3
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
10 +-1% .05W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
1K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AlOAlR46
AlOAlR47
AlOAlR48
AlOAlR49
AlOAlR50

0757-0280
0757-0280
0757-0462
0757-0462
0757-0462

3
3
3
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W
IK +-1% .125W
75K +-1% .125W
75K +-1% .125W
75K +-1% .125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOAlR51
AlOAlTPl
AlOAlTPP
AlOAlTP3
AlOAlTP4

0757-0462
0360-0124
0360-0124
0360-0124
0360-0124

3
3
3
3
3

1
1
1
1
1

RESISTOR 75K
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

19701
97300
97300
97300
97300

SFR25H

RND
RND
RND
RND

AlOAlUl
AlOAlUL
AlOAlU3
AlOAlU4
AlOAlU5

1810-0204
1820-0802
1820-1888
1826-0161
1820-1195

6
1
5
7
7

1
1
1
1
1

NETWORK-RES 8-SIP l.OK OHM X 7
IC GATE ECL NOR QUAD 2-INP
IC PRESCR ECL
IC OP AMP GP QUAD 14-DIP-P PKG
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL

11236
04713
04713
27014
01295

750-81
MC10102P
MC12013L
LM324N
SN74LS175N

AlOAlU6

5081-8117

3

1

SCREEN 1826-0092

28480

5081-8117

+-1X
CONT
CONT
CONT
CONT

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

.125W TF TC=O+-100
PIN .04-IN-BSC-SZ
PIN .04-IN-BSC-SZ
PIN .04-IN-BSC-SZ
PIN .04-IN-BSC-SZ

-

*Indicates factory-selected value

85660-60131 Parts List
Page 3 of 4

HP Part Number 85660-60131
AlOA1 PLL 1 VCO
Reference
Designatior

HP Part
Number

at

Description

Mfr
Code

Mfr Part
Number
-

AlOAlVRl
AlOAlWl

.902-3048
15660-60089

85660-60131 Parts List
Page 4 of 4

1
1

DIODE-ZNR 3.48V 5% DO-35 PD=.4W
CABLE ASSEMBLY, BROWN

*Indicates factoy-selected value

04713
2848C

85660-60089

L

J3
OUT
200-300 MHz

J2
20-30 MHz

Jl
l-5 MHz SCAN
IN

\

VJ2

VJl

-3 5 zul
lrlQ0
u2

f11

:

1

r--J-

8

-

;g

-

-I

titt

7J3

:$? @,;E
u3

;~‘::

rm-

- mnr-rn

m

/

.-

%
E
g,“-B
VdE
a

@

;9

zn,z
aJ 0
91

n

tat----

r.m”-l*n
*e-**f
LLpL(L.xLLL
ml
‘1
1
16

I

Pl

I

15
3
0

\
-

I

5 0 kHz N U L L

AlOAl PLLl VCO Component Locations, 85660-60131

AlOA2
AlOA2 Phase Lock Loop 1 (PLLI) Divider, Circuit Description
AlOA2 functions as a programmable frequency divider and a phase/frequency detector. The
divider is programmed by the Al5 Controller to divide the input frequency by the PLLl
divide number Nl down to 5 MHz. This is then compared with a 5 MHz reference in the
phase/frequency detector. The detector output, after amplification and integration, tunes the
frequency of the PLLl voltage-controlled oscillator (VCO).
The PLLl divide number Nl always falls in the range between 3.60 and 13.97. The integer
part is coded in four binary bits while the fractional part (0.00 to 0.99) is coded in two 4-bit
BCD bytes.

Divide by 2 @
U5 constitutes a 3-stage limiting amplifier. U5 is an ECL triple-line receiver which changes
the input to the proper amplitude and dc level (approximately j-3 V low and +4 V high) for
driving the subsequent divider. U4A is a D-type flip-flop which divides the limiting amplifier
output by 2.

Input Latch @
U9 and UlO are latches which store the divider programming number. The number is clocked
into the latches from the instrument bus with LCK4.

Divide by N @
U12 is a 4-bit binary counter which is programmed with the integer part (3 to 13) of the
PLLl divide number Nl. In operation it is clocked by the output of U4A and counts down to
1. On the next clock pulse, the programming number is loaded into the counter, and the cycle
repeats. Loading time is sensed by U14B when the count is at 2. The next clock pulse causes
U14B to change states which enables the loading of U12 on the subsequent clock pulse.

Fractional Divide 6J
The fractional divide works on the pulse-swallowing principle. Consider a divider that divides
by N for P-A output pulses and by N + 1 for A output pulses. Note that the total output
pulses is P. The number of input pulses to get P output pulses is
N(P-A) + (N + l)A = NP + A.
Therefore, the divide ratio is the number of input pulses divided by the number of output
pulses which is equal to N •l- A/P. In this case P is 100, so N represents the integer portion of
the divide number while A represents the fractional part times 100.
An example best illustrates how the fractional divide works. If the PLL2 divide number Nl
is 8.57, then N=8 and A=57. The integer divider normally divides by N each divide cycle.
AlOA2 1

However, the Fractional Divide circuit can set the integer divider to a “hold” state every
N pulses, causing it to “swallow” a pulse and effectively divide by N+l for a cycle. In this
example, the Fractional Divide circuit selectively causes the integer divider to “swallow” a
pulse in 57 out of every 100 divide cycles. The integer divider thus divides by 8 for 43 out of
every 100 cycles and by 9 for 57 out of every 100 cycles, averaging out to the desired value of
8.57. Filtering in the phase-lock loop causes the PLLl VCO to lock steadily to this average
value.
The fractional divide number is programmed into Ul and U2 as two 4-bit BCD bytes. Ul
and U2 are TTL decade rate multipliers connected in cascade. The input comes from the
integer divide counter U12 via U4B and the ECL to TTL translator consisting of U3B and
Ql. For every 100 clock pulses into Ul and U2, there is output from U3A equal to 100 times
the fractional part of the divide number Nl. For example, if Nl = 8.57, then 57 pulses occur
at U3A output for every 100 pulses into Ul/U2. U3A translates the TTL outputs of Ul and
U2 to ECL, which then are latched by U15B, synchronized by U14A, and fed back to U12 to
control pulse “swallowing.”

Phase/Frequency Detector @
The phase/frequency detector compares the divider output with a 5 MHz reference frequency.
When the two inputs are in phase, the outputs are ECL high, approximately +4 V, with very
narrow pulses at a 5 MHz rate. When the inputs are the same frequency but different in
phase, one output line is a pulse with a width corresponding to the phase difference; the other
output is high with very narrow pulses. For a difference in input frequencies, the outputs
are pulses of varying widths, but with different average dc voltage levels. The sign of this dc
voltage is set by which frequency is higher and the magnitude is determined by the amount of
frequency difference.

Reference Divide by 2 @
U7C is an input buffer amplifier which generates the proper level for ECL (approximately
+3 V low and +4 V high). U15A divides the 10 MHz input by 2 and applies this 5 MHz to
the phase/frequency detector.

Phase Lock Indicator @
The input to the phase lock indicator is the wired OR Q outputs of the phase/frequency
detector. This input is ECL low (approximately 3 V) when the loop is locked; in this
condition, the dc voltage at the base of Q3 is lower than that at the base of Q2 so Q3 is on
and Q2 is off. If the loop unlocks, the input to the phase lock indicator consists of varying
width pulses, the average dc value of which is about half way between a logic low and high.
The voltage divider consisting of R35 and R15 causes the voltage at Q2 base to be lower than
that at Q3 base, so Q2 turns on indicating an unlock condition.
If PLLl unlocks, LED DSl will turn off, and the CRT message PLl UNLOCK will appear.
However, the CRT message PLI UNLOCK will also appear if PLL3 unlocks, as indicated when
AlOA4DSl turns off. In spans above n x 5 MHz and spans of n x 100 kHz and below, PLL3
functions to shift the output of PLL2 up in frequency by 160 MHz for further division by
PLLl. (n is the harmonic mixing number.) The two loops PLL3 and PLLl always operate
in conjunction; if PLL3 unlocks, then the output of PLLl is incorrect whether or not PLLl
unlocks. The single CRT message PLl UNLOCK is used to indicate an unlock in either PLLl or
PLL3.
2

AIQA2

HP Part Number 85660-60023
AlOA2 PLL 1 Divider
HP Part
Number

C
0

w
-

AlOA2

E15660-60023

5

1

BOARD ASSEMBLY, PLL 1 DIVIDER

AlOAZCl
AlOA2C2
AlOA2C3
AlOA2C4
AlOA2C5

C1160-0574
C1160-0574
C1160-0574
C1160-0574
C1160-0574

3
3
3
3
3

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

AlOA2C6
AlOA2C7
AlOA2C8
AlOA2C9
AlOALClO

01160-0574
01160-0570
01160-0570
01160-0574
01160-4084

3
9
9
3
8

AlOAZCll
AlOA2C12
AlOA2C13
AlOAPCRl
AlOA2CR2

01160-3875
01160-0574
01180-2207

Reference
Designation

Mfr
Code

Description

Mfr Part
Number

2848C

85660-60023

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
SR201C223MAAH

1
1
1
1
1

CAPACITOR-FXD .022UF +-20x 1OOVDC CER
CAPACITOR-FXD 220PF +-20% 1OOVDC CER
CAPACITOR-FXD 220PF +-20% 1OOVDC CER
CAPACITOR-FXD .022UF +-20x 1OOVDC CER
CAP-FXD O.luF 50 V

04222
04222
04222
04222
56289

SR201C223MAAH
SR201C221MAAH
SR201C221MAAH
SR201C223MAAH
lC20X7R104M0506

1 901-0040
1 901-0040

3
3
5
1
1

1
1
1
1
1

CAPACITOR-FXD 22PF +-5% 200VDC CER 0+-30
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD lOOUF+-10% 1OVDC TA
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35

04222
56289
71468
71468

AlOAEDSl
AlOA2J2
AlOAZLl
AlOA2L2
AlOA2MPl

1 990-0485
1 250-2112
9 loo-2255
9 loo-1788

5
1
4
6

1
1
1
1

LED-LAMP LUM-INT=EMCD IF=30MA-MAX BVR=5V
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 470NH +-10x .105D-INX
CORE-FERRITE CHOKE-WIDEBAND IMP:680
NOT ASSIGNED

AlOA2MP2
AlOA2MP3
AlOA2MP4
AlOA2MP5
AlOA2MP6

0520-0128
0590-0533
1 205-0285
2 190-0112
2 190-0124

7
5
0
0
4

2
2
1
2
4

SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
THREADED INSERT-NUT 2-56 .06-IN-LG SST
HEAT SINK SGL DIP
WASHER-LK HLCL NO. 2 .088-IN-ID
WASHER-LK INTL T NO. 10 .195-IN-IO

77250
46384
13103
77339
98291

3002-26

AlOA2MP7
AlOA2MP8
AlOAZMPll
AlOA2MP12
AlOA2MP13

2 200-0101
2 950-0078
8 5660-00012
8 5660-20053
8 5660-20068

0
9
6
7
4

2
2
1
1
2

SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
NUT-HEX-DEL-CHAM lo-32-THD .067-IN-THK
HEAT SINK BOTTOM
PC COVER, PLL 1 DIVIDER
GROUND LUG

77250
74163
28480
28480
28480

500220
85660-00012
85660-20053
85660-20068

AlOA2MP14
AlOA2Ql
AlOA2Q2
AlOA2Q3
AlOALRl

8 6701-40001
1'853-0405
1'853-0451
18853-0451
0 757-0280

9
9
5
5
3

2
1
1
1
1

EXTRACTOR PC
TRANSISTOR PNP SI PD=300MW FT=850MHZ
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
7ESISTOR 1K +-1% .125W TF TC=O+-100

28480
04713
04713
04713
19701

86701-40001
2N4209

AlOA2R2
AlOA2R3
AlOA2R4
AlOA2R5
AlOA2R6

01 698-3431
0 757-0403
0 757-0280
0 757-0280
0 757-0394

6
2
3
3
0

1
1
1
1
1

7ESISTOR
iESISTOR
?ESISTOR
?ESISTOR
?ESISTOR

23.7 1% .125W TF TC=O+-100
121 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R7
AlOA2R8
AlOA2R9
AlOAZRlO
AlOAERll

0 757-0416
0’757-0416
01 698-0083
01 698-3440
0:757-0280

7
7
8
7
3

1
1
1
1
1

7ESISTOR
tESISTOR
?ESISTOR
IESISTOR
{ESISTOR

511 +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R12

0:757-0416

7

1

tESISTOR 511 +-1% .125W TF TC=O+-100

19701

SFR25H

.022UF
.022UF
.022UF
.022UF
.022UF

+-20%
+-20%
+-20%
+-20%
+-20%

1OOVDC
1OOVDC
1OOVDC
1OOVDC
1OOVDC

28480
98291
24226
02114

FD12COG2D220J
SR201C223MAAH
150D107X9010R2-DYS

HLMP-1503
051-047-0259-220
lOM470K
VK200 20/48

KFS2-256
6007A-TOP

SFR25H

-

*Indicates factory-selected value

85660-60023 Parts List
Page 1 of 3

HP Part Number 85660-60023
AlOA2 PLL 1 Divider

Reference
Designation I

HP Part
Number

Mfr
Code

Description

;)tl
-

Mfr Part
Number

AlOA2R13
AlOA2R14
AlOA2R15
AlOA2R16

I1757-0416
(1698-3440
(1757-0442
(1757-0280

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

511 +-1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R17
AlOA2R18
AlOA2R19
AlOA2R20
AlOA2R21

(1698-3440
11757-0280
(1757-0280
C1757-0280
t1757-0280

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196 1% .125W
1K +-1% .125W
1K +-1% .125W
1K +-1% .125W
1K +-1% .125W

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R22
AlOA2R23
AlOA2R24
AlOA2R25
AlOA2R26

I1757-0280
c1757-0280
C)757-0280
C1757-0280
C1757-0280

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
?ESISTOR
7ESISTOR

1K
1K
1K
1K
1K

.125W TF TC=O+-100
.125W TF TC=O+-100
.125W TF TC=O+-100
.125W TF TC=O+-100
.125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R27
AlOA2R28
AlOA2R29
AlOA2R30
AlOA2R31

C1757-0280
C1757-0280
01757-0280
01757-0416
01698-3440

1
1
1
1
1

?ESISTOR
tESISTOR
?ESISTOR
tESISTOR
1ESISTOR

1K +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA2R32
AlOA2R33
AlOA2R34
AlOA2R35
AlOA2TPl

01757-0403
01757-0419
01757-0280
0‘757-0280
1 251-0600

i
(
:
:
(

1
1
1
1
1

1ESISTOR 121 +-1X .125W TF TC=O+-100
tESISTOR 681 +-1% .125W TF TC=O+-100
IESISTOR 1K +-1% .125W TF TC=O+-100
ZESISTOR 1K +-1% .125W TF TC=O+-100
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
19701
19701
27264

SFR25H
SFR25H
SFR25H
SFR25H
16-06-0034

AlOA2TP2
AlOA2TP3
AlOA2TP4
AlOA2TP5
AlOA2TP6

1 251-0600
1 251-0600
1 251-0600
1 251-0600
1 251-0600

c
c
[
c
C

1
1
1
1
1

:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL

CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14~MM-BSC-SZ
1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

AlOA2TP7
AlOA2TP8
AlOA2TP9
AlOALTPlO
AlOA2TPll

1 251-0600
1 251-0600
1 251-0600
1 251-0600
1 251-0600

c
c
c
c
c

1
1
1
1
1

:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL

CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

AlOA2TP12
AlOA2TP13
AlOA2TP14
AlOA2Ul
AlOA2U2

1 251-0600
1 251-0600
1 251-0600
1, 820-0909
1, 820-0909

2
3
3
3
3

1
1
1
1
1

:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
C MULTR TTL
C MULTR TTL

27264
27264
27264
01295
01295

16-06-0034
16-06-0034
16-06-0034
SN74167N
SN74167N

AlOA2U3
AlOA2U4
RlOA2U5
410A2U6
410A2U7

1; 620-0808
11 820-1225
1; 620-1320
II 510-0204
II 320-0802

I
1
I
5
L

1
1
1
1
1

C GATE ECL NOR DUAL 3-INP
C FF ECL D-M/S DUAL
C RCVR ECL LINE RCVR TPL 2-INP
IETWORK-RES 8-SIP l.OK OHM X 7
C GATE ECL NOR QUAD 2-INP

04713
04713
04713
11236
04713

MClOlllP
MC10231P
MC10216L
750-81
MC10102P

410A2U8
410A2U9
410A2UlO
410A2Ull

II310-0204
II320-1196
11 320-1196
11 310-0204

5
3
3
j

1
1
1
1

ETWORK-RES 8-SIP l.OK OHM X 7
C FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
C FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
ETWORK-RES 8-SIP l.OK OHM X 7

11236
01295
01295
11236

750-81
SN74LS174N
SN74LS174N
750-81

+-1X
+-1%
+-1%
+-1%
+-1%

-

85660-60023 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60023
AlOA2 PLL 1 Divider
Reference
Designation

HP Part
Number

m
-

Description

Mfr
Code

Mfr Part
Number

AlOA2U12

1820-0821

1

IC CNTR ECL BIN UP/DOWN SYNCHRO POS-EDGE

04713

MC10136L

AlOA2U13
AlOA2U14
AlOA2U15
AlOA2U16
AlOAPVRl

1810-0204
1820-0817
1820-0817
1820-0817
1902-3059

1
1
1
1
1

NETWORK-RES 8-SIP l.OK OHM X 7
IC FF ECL O-M/S DUAL
IC FF ECL O-M/S DUAL
IC FF ECL O-M/S DUAL
DIODE-ZNR 3.83V 5% DO-35 PO=.4W

11236
04713
04713
04713
04713

750-81
MC10131P
MC10131P
MC10131P

AlOALWl

35660-60090

1

CABLE ASSEMBLY, ORANGE

28480

85660-60090

-

*Indicates factory-selected value

85660-60023 Parts List
Page 3 of 3

9

2
11
F

/--A3

Yc*

~H~~O~noolmJ3OOO~~ au@
1
19

Pl

18
36

\
14

i

AlOA2 PLLl Divider Component Locations, 85660-60023

10
b

AlOA3
AlOA3 Phase Lock Loop 1 (PLLI) IF, Circuit Description
AlOA3 functions to mix the output of A10A4 (160.15 to 166 MHz) with the LO output from
AlOAl (200 to 300 MHz). T he output of this assembly is the difference frequency suitably
filtered and amplified to about -10 dBm.

LO Amplifier @
The LO amplifier consists of common-emitter amplifiers Ql and Q2. CR1 and CR2 provide
limiting to prevent overdriving Q2 near 200 MHz where Ql has more gain.

Mixer @I
The double-balanced mixer Ul operates with about +7 dBm LO drive and with -30 dBm
RF signal input. The IF output is about -36 dBm and covers 30 MHz to 140 MHz. The
185 MHz Low-Pass Filter attenuates the harmonics of the RF signal input. The 10 dB pad
reduces the RF signal input from -20 dBm to -30 dBm.

IF Input Amplifier @
The IF input amplifier has an input filter to partially filter the RF and LO signals from the
mixer. The amplifier Q3 has emitter degeneration R17 to reduce distortion.

140 MHz Low-Pass Filter @I
The 140 MHz Low-Pass Filter is a modified elliptic filter which must pass 140 MHz while
rejecting 160 to 166 MHz by at least 60 dB. The three adjustable coils optimize the stopband
by providing nulls at the frequencies shown on the schematic. This filter also rejects the LO
frequencies (200 to 300 MHz).

IF Output Amplifier @
The IF output amplifier consists of two common-emitter stages and an output low-pass filter.
The two stages are coupled by Cl4 and L17 which provide high frequency peaking.

AlOA3 1

HP Part Number 85660-60024
AlOA3 PLL 1 IF
Reference
Designation n

HP Part
Number

C
D Qty

Description

Mfr
Code

Mfr Part
Number

AlOA3

85660-60024

6

1

BOARD ASSEMBLY, PLL 1 IF

28480

85660-60024

AlOA3Cl
AlOA3C2
AlOA3C3
AlOA3C4
AlOA3C5

0160-3878
0160-0574
0160-3878
0160-3878
0160-0574

6
3
6
6
3

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAP-FXD 1OOOpF 100 V
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .022UF +-20x 1OOVDC CER

04222
04222
04222
04222
04222

SR201C102MAAH
SR201C223MAAH
SR201C102MAAH
SR201C102MAAH
SR201C223MAAH

AlOA3C6
AlOA3C7
AlOA3CB
AlOA3C9
AlOA3ClO

0160-3878
0160-3875
0160-3875
0160-3875
0160-0574

6
3
3
3
3

1
1
1
1
1

CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 22PF +-5X 200VDC CER 0+-30
CAPACITOR-FXD 22PF +-5% EOOVDC CER 0+-30
CAPACITOR-FXD 22PF +-5% 200VDC CER 0+-30
CAPACITOR-FXD .022UF +-20% 1OOVDC CER

04222

04222

SR201C102MAAH
FD12COG2D220J
FD12COG2D220J
FD12COG2022OJ
SR201C223MAAH

AlOA3C11
AlOA3C12
AlOA3C13
AlOA3C14
AlOA3C15

0160-0574
0160-0574
0160-0574
0160-3876
0160-0574

3
3
3
4
3

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

04222
04222
04222
04222
04222

SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
SR202C470MAAH
SR201C223MAAH

AlOA3C16
AlOA3C17
AlOA3ClB
AlOA3C19
AlOA3C20

0160-3653
0160-3878
0160-3874
0160-0574
0160-0574

5
6
2
3
3

1
1
1
1
1

CAPACITOR-FXD 33PF +-5x 200VDC CER 0+-30
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD 1OPF +-.5PF ZOOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER

AlOA3C21
AlOA3C22
AlOA3C23
AlOA3C24
AlOA3C25

0160-0574
0160-0574
0160-3874
0160-3875
0160-3565

3
3
2
3
8

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXO
CAPACITOR-FXD
CAP-FXD 6.BpF

.022UF +-20% 1OOVDC CER
.022UF +-20% 1OOVDC CER
1OPF +-.5PF LOOVDC CER
22PF +-5% LOOVDC CER 0+-30
100 V

AlOA3C26*
AlOA3C27
AlOA3C28
AlOA3C29
AlOA3C30

0160-3874
0160-3565
0160-0574
0160-3874
0160-3565

2
8
3
2
8

1
1
1
1
1

CAPACITOR-FXD
CAP-FXD 6.BpF
CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD 6.BpF

1OPF +-.5PF 200VDC CER
100 V
.022UF +-20% 1OOVDC CER
1OPF +-.5PF 200VDC CER
100 V

AlOA3C31
AlOA3C32
AlOA3CRl
AlOA3CR2
AlOA3J3

0160-3873
0160-4289
1901-0535
1901-0535
1250-0690

1
5
9
9
6

1
1
1
1
1

CAPACITOR-FXD 4.7PF +-.5PF ZOOVDC CER
CAPACITOR-FXD 15PF +-5% 1OOVDC CER 0+-30
DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG
CONNECTOR-RF SMB M SGL-HOLE-FR SO-OHM

98291

51-047-4610

AlOA3Ll
AlOA3L2
AlOA3L3
AlOA3L4
AlOA3L5

9100-2256
9100-2247
9100-2248
9100-2248
9100-2891

5
4
5
5
4

1
1
1
1
1

INDUCTOR RF-CH-MLD 560NH +-lo% .1050-INX
INDUCTOR RF-CH-MLD 1OONH +-lo% .1050-INX
INDUCTOR RF-CH-MLD 120NH +-10x .105D-INX
INDUCTOR RF-CH-MLD 120NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.

24226
24226
24226
24226
24226

lOM560K
1OMlOOK
lOM120K
lOM120K
lOM050K-1

AlOA3L6
AlOA3L7
AlOA3LB
AlOA3L9
AlOA3LlO

9100-2247
9100-2247
9100-1788
9100-1788
9100-0368

4
4
6
6
6

1
1
1
1
1

INDUCTOR RF-CH-MLD 1OONH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1OONH +-lo% .105D-INX
CORE-FERRITE CHOKE-WIDEBANO IMP:680
CORE-FERRITE CHOKE-WIDEBAND IMP:680
INDUCTOR RF-CH-MLD 330NH +-lo% .105D-INX

24226
24226
02114
02114
32159

85660-80006

6

1

INDUCTOR 120NH

AlOA3Lll

I

.022UF +-20% 1OOVDC CER
.022UF +-20% 1OOVDC CER
.022UF +-20% 1OOVDC CER
47PF +-20% 2OOVDC CER
.022UF +-20% 1OOVDC CER

*Indicates factory-selected value

04222
04222
04222
04222
04222

04222

RPEllOCOG330J200V
SR201C102MAAH
FD12COG2DlOOD
SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
FD12COG2DlOOD
FD12COG2022OJ
FDllCOGLAGRBD
FD12COG2DlOOD
FDllCOG2A6RBD
SR201C223MAAH
FD12COG2DlOOD
FDllCOG2AGRBD
FD12COG204R7D
RPEllOCOG150J100V

1OMlOOK
1OMlOOK
VK200 20/4B
VK200 20/4B
lA-3303M +-lo%
85660-80006

85660-60024 Parts List
Page 1 of 3

HP Part Number 85660-60024
AlOA3 PLL 1 IF
Reference
Designation

HP Part
Number

AlOA3L12
AlOA3L13
AlOA3L14
AlOA3L15

85660-80009
85660-80006
9100-2251
9100-2247

AlOA3L16
AlOA3L17
AlOA3LlB
AlOA3L19
AlOA3L20

9100-2247
9100-2248
9100-2256
9100-2256
9100-2891

AlOA3L21
AlOA3MPl
AlOA3MP3
AlOA3MP4
AlOA3MP5

Mfr
Code

Description

Mfr Part
Number

1
1
1
1

INDUCTOR 1OONH
INDUCTOR 120NH
INDUCTOR RF-CH-MLD 220NH +-lo% .1050-INX
INDUCTOR RF-CH-MLD 1OONH +-lo% .105D-INX

28480
28480
24226
24226

85660-80009
85660-80006
lOM220K
1OMlOOK

i

1
1
1
1
1

INDUCTOR RF-CH-MLD 1OONH +-IO% .lOSD-INX
INDUCTOR RF-CH-ML0 120NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 560NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 560NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.

24226
24226
24226
24226
24226

1OMlOOK
lOM120K
lOM560K
lOM560K
lOM050K-1

9100-2891

4

1

24226

lOM050K-1

2190-0124
2200-0101
2950-0078

4
C
9

6
2
3

INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
NOT ASSIGNED
WASHER-LK INTL T NO. 10 .195-IN-ID
SCREW-MACH 4-40 .lBB-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK

98291
77250
74163

3002-26

AlOA3MP7
AlOA3MPB
AlOA3MP9
AlOA3MPlO
AlOA3MPll

85660-00038
85660-00040
85660-20054
85660-20068
86701-40001

E
C
a
4
9

2
1
1
3
2

SHIELDING CAN
SHIELDING CAN
COVER, PC, PLL 1 IF
GROUND LUG
EXTRACTOR PC

28480
28480
28480
28480
28480

85660-00038
85660-00040
85660-20054
85660-20068
86701-40001

AlOA3Ql
AlOA3Q2
AlOA3Q3
AlOA3Q4
AlOA3Q5

1854-0345
1854-0378
1854-0345
1854-0345
1854-0345

8
7
a
a
a

1
1
1
1
1

TRANSISTOR NPN 2N5179
TRANSISTOR NPN 2N5109
TRANSISTOR NPN 2N5179
TRANSISTOR NPN 2N5179
TRANSISTOR NPN 2N5179

04713
04713
04713
04713
04713

2N5179
2N5109
2N5179
2N5179
2N5179

AlOA3Rl
AlOA3R2
AlOA3R3
AlOA3R4
AlOA3R5

0757-0394
0698-3152
0757-0421
0757-0401
0698-3429

0
a
4
0
2

1
1
1
1
1

7ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR

51.1 +-1% .125W TF TC=O+-100
3.4BK 1% .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
19.6 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA3R6
AlOA3R7
AlOA3RB
AlOA3R9
AlOA3RlO

0698-3438
0698-3446
0698-3440
0757-0394
0757-0401

3
3
7
0
0

1
1
1
1
1

1ESISTOR
1ESISTOR
tESISTOR
IESISTOR
{ESISTOR

147 1% .125W TF TC=O+-100
383 1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA3Rll
AlOA3R12
AlOA3R13
AlOA3R14
AlOA3R15

0757-0397
0757-0401
0757-0428
0698-3152
0757-0416

3
0
1
8
7

1
1
1
1
1

tESISTOR
ZESISTOR
ZESISTOR
IESISTOR
tESISTOR

68.1 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100
3.4BK 1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA3R16
AlOA3R17
AlOA3RlB
AlOA3R19
AlOA3R20

0698-3444
0757-0346
0698-3444
0757-0394
0698-3429

1
2
1
0
2

1
1
1
1
1

tESISTOR
IESISTOR
{ESISTOR
lESISTOR
tESISTOR

316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
51.1 +-1X .125W TF TC=O+-100
19.6 1% .125W TF TC=O+-100

19701
91637
19701
19701
19701

SFR25H
CMF-55-1. T-l
SFR25H
SFR25H
SFR25H

AlOA3R21
AlOA3R22
AlOA3R23
AlOA3R24

0757-0280
0757-0280
0757-0280
0698-3429

3
3
3
2

1
1
1
1

lESISTOR
lESISTOR
[ESISTOR
lESISTOR

1K +-1%
1K +-1X
IK +-1%
19.6 1%

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

C

f
(
1
I!
c
L
r

.125W
.125W
.125W
.125W

SI
SI
SI
SI
SI

TO-72
TO-39
TO-72
TO-72
TO-72

PD=200MW
PD=BOOMW
PD=200MW
PD=EOOMW
PD=200MW

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

-

85660-60024 Parts List
Page 2 of 3

*Indicates factory-selected value

500220

HP Part Number 85660-60024
AlOA3 PLL 1 IF
Reference
Designation

HP Part
Number

w
-

Description

Mfr
Code

Mfr Part
Number

AlOA3R25

1757-0280

1

RESISTOR 1K +-1% .125W TF TC=O+-100

19701

SFR25H

AlOA3R26
AlOA3R27
AlOAJLJl
AlOA3Wl
AlOA3W2

)757-0280
1698-3440
1955-0063
i5660-60092
15660-6009

1
1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 196 1% .125W TF TC=O+-100
U-WAVE MIXER 500 MHZ MAX
CABLE ASSEMBLY, BLUE (INCLUDES 52)
CABLE ASSEMBLY, YELLOW (INCLUDES Jl)

19701
19701
15542
28480
28480

SFR25H
SFR25H
SRA-1-32
85660-60092
85660-60091

*Indicates factoyselected value

85660-60024 Parts List
Page 3 of 3

J2
Jl
IN
IN
ZOO-300 MHz 160-166 MHz

m
R2
R3 Ic2
35
I @ c3R4
I CR2
CR1 ;I
RS %z
R7
j?I7
@ G”
”

1 piTJ=
8 5
’ 00

EkeI
“E:
G,
Ii,
LJ Q
63 m
ZN
(L(L
;$I
In2; .&
‘”
1 w
0:
Y?
‘1

1
16

t

L8

ll

Ic271 L I Z

;
0
1

m

Lll

t&;;

I,

cml
a4

I,pm

;

‘ I 0 IL.+ to:
1,
EG
-0
00 D

;

‘@~,
I

L9

rrzl

IF

Q~iyJggj
I
:
nA
Y

I

I

J3
OUT
PLL 1

L13
170 MHz NULL

L

1

-

-

-

-

-

’

B

A

PI
Lll
165 MHz NULL

L12
160 MHz NULL

AlOA3 PLLl IF Component Locations, 85660-60024

AlOA4
AlOA4 Phase Lock Loop 3 (PLL3) Up Converter,
Circuit Description
The function of AlOA4 is to mix 160 MHz with the output of AlOA5 (.15 to 6 MHz),
up-converting that output by 160 MHz. The two frequencies are mixed together in a phase
lock loop which has a closed loop bandwidth of approximately 10 kHz.

Frequency Multiplier x 1.6 @
The frequency multiplier generates 160 MHz from the 100 MHz at the input. U3 divides the
input by 5 and produces harmonics of the resulting 20 MHz. The 160 MHz bandpass filter
selects 160 MHz, which is then amplified by Q5 and buffered with a pad to -20 dBm. All
three adjustments are set by peaking the 160 MHz signal.

160 to 166 MHz VCO @
The 160 to 166 MHz VCO uses Ql in a Colpitts configuration. Lll centers the frequency
range of the VCO while CR3 is the varactor which tunes the oscillator. Q2 and Q4 are buffer
amplifiers.

Mixer @
U7 is a double-balanced mixer which operates with about f7 dBm of LO power at 160 to
166 MHz and -20 dBm of RF signal power at 160 MHz. The desired output is the difference
frequency which falls in the range between 150 kHz and 6 MHz.

IF Amplifier @
The output of the mixer U7 is filtered by an 8-section elliptic filter which must reject
14 to 20 MHz, and other higher frequencies. The filter output is amplified by Q3.

Loop Amplifier @
The phase detector outputs are connected to the differential inputs of U2. C9 and R16
provide ac feedback around U2 while dc feedback is provided by the entire phase lock loop.
CR4 and CR5 lessen the charging time of C7 when the input frequency is changed abruptly.
R14, R15, and C7 form an ac voltage divider which sets the loop bandwidth to about 10 kIIz.
The output of the divider goes to the varactor in the oscillator and tunes the VCO. UlB
prevents this tune voltage from latching at a positive value by sensing when the voltage goes
above 0 V. When this occurs, the output of UlB pulls the tune voltage down to the proper
lock range. R13 provides hysteresis to allow time for the loop to lock.

AlOA4 1

Phase/Frequency Detector @
U6B and U6C are ECL buffer amplifiers which have the proper output amplitude and dc level
(approximately +3 V low and +4 V high) to drive the phase/frequency detector. When the
phase detector inputs have the same phase, the outputs are ECL high with narrow negative
coincident pulses. If there is a phase offset, the pulse widens on one of the outputs depending
on which signal is leading in phase. When the input frequencies are different, the outputs
consist of varying width pulses; the dc or average value of the outputs are different depending
on which frequency is higher and by how much.

Phase Lock Indicator @
The phase lock indicator senses the outputs of the phase detector which are ECL logic high
when the loop is locked. When the loop is not locked, the average phase detector output level
drops to half way between a logic low and logic high. UlA switches when this occurs and
causes DSl to go out and the phase lock output HULl to go to TTL high.
If PLL3 unlocks, LED DSl will turn off, and the CRT message PLl UNLOCK will appear.
However, the CRT message PLl UNLOCK will also appear if PLLl unlocks, as indicated when
AlOA2DSl turns off. In spans above n x 5 MHz and spans of n x 100 kHz and below, PLL3
functions to shift the output of PLL2 up in frequency by 160 MHz for further division by
PLLl. The two loops PLL3 and PLLl always operate in conjunction; if PLL3 unlocks, then
the output of PLLl is incorrect whether or not PLLl unlocks. The single CRT message PLl
UNLOCK is used to indicate an unlock in either PLLl or PLLS.

HP Part Number 85660-60025
Al OA4 PLL 3 Up Converter
Reference

Designation

HP Part
Number

Mfr
Code

Description

%Y
-

AlOA4

85660-60025

7

1

BOARD ASSEMBLY, PLL 3 UP CONVERTER

AlOA4Cl
AlOA4C2
AlOA4C3
AlOA4C4
AlOA4C5

0160-0574
0160-0572
0160-0572
0160-0574
0160-4084

3
1
1
3
a

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD O.luF

AlOA4C6
AlOA4C7
AlOA4C8
AlOA4C9
AlOA4ClO

0160-4084
0180-0291
0160-0161
0160-0161
0160-0574

a
3
4
4
3

1
1
1
1
1

AlOA4Cll
AlOA4C12
AlOA4C13
AlOA4C14
AlOA4C15

0160-0574
0180-0228
0180-0291
0160-0574
0160-0574

3
6
3
3
3

AlOA4C16
AlOA4C17
AlOA4C18
AlOA4C19
AlOA4C20

0160-0574
0160-4084
0160-3749
0160-3877
0160-3749

AlOA4C21
AlOA4C22
AlOA4C23
AlOA4C24
AlOA4C25

Mfr Part
Number

28480

85660-60025

04222
04222
04222
04222
56289

SR201C223MAAH
SR201C222MAAH
SR201C222MAAH
SR201C223MAAH
lC20X7R104M050B

CAP-FXD O.luF 50 V
CAPACITOR-FXD lUF+-10% 35VDC TA
CAPACITOR-FXD .OlUF +-lo% EOOVDC POLYE
CAPACITOR-FXD .OlUF +-10x 200VDC POLYE
CAPACITOR-FXD .022UF +-20X 1OOVDC CER

56289
56289
84411
84411
04222

lC20X7R104M050B
15DD105X9035A2-DYS
HEW-238M
HEW-238M
SR201C223MAAH

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.022UF +-20% 1OOVDC CER
22UF+-10% 15VDC TA
lUF+-10% 35VDC TA
.022UF +-20% 1OOVDC CER
.022UF +-20% 1OOVDC CER

04222
56289
56289
04222
04222

SR201C223MAAH
150D226X901582-DYS
150D105X9035A2DYS
SR201C223MAAH
SR201C223MAAH

3
a
0
5
0

1
1
1
1
1

CAPACITOR-FXD
CAP-FXD O.luF
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.022UF
50 V
330PF
1OOPF
330PF

04222
56289

+-lo% 50VDC CER
+-20% ZODVDC CER
+-lo% 50VDC CER

04222

SR201C223MAAH
lC20X7R104M050B
RPEllO-401X7R331K50V
SR202ClOlMAAH
RPEllO-401X7R331K50V

0180-0228
0160-3876
0180-0228
0160-3877
0160-0571

6
4
6
5
0

1
1
1
1
1

CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 47PF +-20% 200VDC CER
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 1OOPF +-20% LOOVDC CER
CAPACITOR-FXD 470PF +-20% 1OOVDC CER

56289
04222
56289
04222
04222

150D226X9015B2-DYS
SR202C470MAAH
150D226X9015B2-DYS
SR202ClOlMAAH
SR201C471MAAH

AlOA4C26
AlOA4C27
AlOA4C28
AlOA4C29
AlOA4C30

0160-3877
0160-0574
0160-0571
0160-3878
0160-0574

5
3
0
6
3

1
1
1
1
1

CAPACITOR-FXD 1OOPF +-20% ZODVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD 470PF +-20% 1ODVDC CER
CAP-FXD 1OOOpF 100 V
CAPACITOR-FXD .022UF +-20% 1OOVDC CER

04222
04222
04222
04222
04222

SR202ClOlMAAH
SR201C223MAAH
SR201C471MAAH
SR201C102MAAH
SR201C223MAAH

AlOA4C31
AlOA4C32
AlOA4C33
AlOA4C34
AlOA4C35

0160-0574
0160-0574
0160-3875
0160-0574
0160-3872

3
3
3
3
0

1
1
1
1
1

CAPACITOR-FXD .022UF +-20x 1OOVDC CER
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD 22PF +-5% EOOVDC CER 0+-30
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAP-FXD 2.2pF 200 V

04222
04222

SR201C223MAAH
SR201C223MAAH
FD12COG2D220J
SR2DlC223MAAH
FD12COG2D2R2C

AlOA4C36
AlOA4C37
AlOA4C38
AlOA4C39
AlOA4C40

0160-3872
0160-3565
0160-0574
0160-3874
0160-0574

0
8
3
2
3

1
1
1
1
1

CAP-FXD 2.2pF
CAP-FXD 6.8pF
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

AlOA4C41
AlOA4C42
AlOA4C43
AlOA4C44
AlOA4C45

0160-0574
0160-0574
0160-3873
0160-3875
0160-3874

1
1
1
1
1

CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXD .022UF +-20% 1DDVDC CER
CAPACITOR-FXD 4.7PF +-.5PF ZOOVDC CER
CAPACITOR-FXD 22PF +-5x 200VDC CER 0+-30
CAPACITOR-FXD 1OPF +-.5PF 200VDC CER

AlOA4C46

0160-3874

1

CAPACITOR-FXD 1OPF +-.5PF EOOVDC CER

.022UF
2200PF
2200PF
.022UF
50 V

+-20%
+-20%
+-20%
+-20%

1OOVDC
1OOVDC
IOOVDC
1OOVDC

CER
CER
CER
CER

+-20% 1OOVDC CER

200 V
100 V
.022UF +-20% 1OOVDC CER
1OPF +-.5PF LOOVDC CER
.022UF +-20% 1OOVDC CER

04222

04222
04222
04222
04222

FD12COG2D2R2C
FDllCOG2A6R8D
SR201C223MAAH
FD12CDG2DlOOD
SR201C223MAAH
SR201C223MAAH
SR201C223MAAH
FD12COG2D4R7D
FD12COG2D220J
FD12COG2DlOOD
FD12COG2DlOOD

-

*Indicates factory-selected value

85660-60025 Parts List
Page 1 of 4

HP Part Number 85660-60025
AloA4 PLL 3 Up Converter
-

Reference
Designation

HP Part
Number

Mfr Part
Number

Mfr
Code

Description
CAPACITOR-FXD 4.7PF +-.5PF 200VDC CER
CAPACITOR-FXD 22PF +-5X EOOVDC CER 0+-3C
CAP-FXD 15pF 200 V
CAPACITOR-V TRMR-AIR 1.3-5.4PF 175V

74970

FD12COG2D4R7D
FD12COG2D220J
RPE121-105COG150J200V
187-0103-028

1
1
1
1
1

DIODE-SWITCHING 80V
DIODE-SWITCHING 80V
DIODE-VVC 2.2PF 7%
DIODE-SWITCHING 80V
DIODE-SWITCHING 80V

9N171
9N171
so545
9N171
9N171

lN4150
lN4150
132208(8)
lN4150
lN4150

,
1
1

1
1
1
1
1

LED-LAMP LUM-INT=2MCO IF=30MA-MAX BVR=5V
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SMB M SGL-HOLE-FR 50-OHM
CONNECTOR-RF SMB M PC 50-OHM
INDUCTOR RF-CH-MLD 22UH +-lo% .166D-INX.

28480
98291
98291
98291
99800

HLMP-1503
051-047-0259-220
051-047-0259-220
51-051-0169-226
1537-44

9140-0179
9100-1788
9100-1788
9100-2258
9100-2258

1
t
t
;
;

1
1
1
1
1

INDUCTOR RF-CH-MLD 22UH +-lo% .166D-INX.
CORE-FERRITE CHOKE-WIDEBAND IMP:680
CORE-FERRITE CHOKE-WIDEBAND IMP:680
INDUCTOR RF-CH-MLD 1.2UH +-10X .105D-INX
INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D-INX

99800
02114
02114
99800
99800

AlOA4L7
AlOA4L8
AlOA4L9
AlOA4LlO
AlOA4Lll

9100-2258
9100-2257
9100-2254
9100-2258
85660-80006

;
t
:
;
t

1
1
1
1
1

INDUCTOR RF-CH-MLD 1.2UH +-10x
INDUCTOR RF-CH-MLD 820NH +-lo%
INDUCTOR RF-CH-MLD 390NH +-10%
INDUCTOR RF-CH-MLD 1.2UH +-10x
INDUCTOR 120NH

.lOSD-INX
.105D-INX
.lOSD-INX
.105D-INX

99800
32159
24226
99800
28480

1025-22
1A 8203M +-lo%
1 OM390K
1025-22
85660-80006

AlOA4L12
AlOA4L13
AlOA4L14
AlOA4L15
AlOA4L16

9100-2255
9100-2258
9100-2258
9100-2891
85660-80006

I
;
i
I
t

1
1
1
1
1

INDUCTOR RF-CH-MLD 470NH +-lo% .lOSD-INX
INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 50NH +-lo% .105D-INX.
INDUCTOR 120NH

24226
99800
99800
24226
28480

lOM470K
1025-22
1025-22
lOM05DK-1
85660-80006

AlOA4L17
AlOA4L18
AlOA4L19
AlOA4L20
AlOA4L21

85660-80006
9135-0073
9100-2258
9100-2251
9140-0158

f
:
j
(
t

1
1
1
1
1

INDUCTOR 120NH
INDUCTOR RF-CH-MLD 51NH +-6.596% 2.60-MM
INDUCTOR RF-CH-MLD 1.2UH +-lo% .lD5D-INX
INDUCTOR RF-CH-MLD 220NH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 1UH +-lo% .105D-INX.2

28480
06560
99800
24226
32159

85660-80006

AlOA4L22
AlOA4MPl
AlOA4MP3
AlOA4MP4
AlOA4MP5

9140-0144

1

99800

1025-36

2190-0124
2200-0101
2950-0078

6
2
3

INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
NOT ASSIGNED
WASHER-LK INTL T ND. 10 .195-IN-ID
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK

98291
77250
74163

3002-26

AlOA4MP6
AlOA4MP8
AlOA4MP9
AlOA4MPlO
AlOA4MPll

3050-0082
35660-00042
35660-20055
35660-20068
367Dl-40001

1
1
1
3
1

IJASHER-FL NM NO. 4 .116-IN-ID .188-IN-00
jHIELDING CAN
:OVER PC, PLL3 UP CONVERTER
iROUND LUG
IXTRACTOR PC

76854
28480
28480
28480
28480

8942-3
85660-00042
85660-20055
85660-20068
86701-40001

AlOA4Ql
AlOA4Q2
AlOA4Q3
AlOA4Q4

1854-0345
1854-0345
1854-0345
1854-0345

1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

04713
04713
04713
04713

2N5179
2N5179
2N5179
2N5179

AlOA4C47
AlOA4C48
AlOA4C49*
AlOA4C50

0160-3873
0160-3875
0160-4385
0121-0452

AlOA4CRl
AlOA4CR2
AlOA4CR3
AlOA4CR4
AlOA4CR5

1901-0050
1901-0050
0122-0085
1901-0050
1901-0050

AlOA4DSl
AlOA4J2
AlOA4J3
AlOA4J4
AlOA4Ll

1990-0485
1250-2112
1250-2112
1250-0257
9140-0179

I
1

AlOA4L2
AlOA4L3
AlOA4L4
AlOA4L5
AlOA4L6

NPN
NPN
NPN
NPN

200MA 2NS DO-35
200MA 2NS DO-35
C3/C25-MIN=4.5
200MA 2NS DO-35
200MA 2NS DO-35

2N5179
2N5179
2N5179
2N5179

SI
SI
SI
SI

TO-72
TO-72
TO-72
TO-72

PD=ZODMW
PD=LOOMW
PD=ZOOMW
PD=POOMW

-

85660-60025 Parts List
Page 2 of 4

*Indicates factory-selected value

1537-44
VK200 20/4B
VK200 20/4B
1025-22
1025-22

1025-22
lOM220K
lA1002M +-lo%

500220

HP Part Number 85660-60025
AlOA4 PLL 3 Up Converter

Reference
Designation

HP Part
Number

JI
-

Mfr
Code

Description

Mfr Part
Number

AlOA4Q5

1855-0327

B

1

TRANSISTOR J-FET 2N4416 N-CHAN D-MODE

34677

AlOA4Rl
AlOA4R2
AlOA4R3
AlOA4R4
AlOA4R5

0698-3440
0757-0394
0698-0083
0757-0418
0757-0280

7
0
8
9
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196 1% .125W TF TC=O+-100
51.1 +-1X .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
619 +-1% .125W TF TC=D+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA4R6
AlOA4R7
AlOA4R8
AlOA4R9
AlOA4RlD

0757-0280
0698-3159
0698-3159
0757-0280
0757-0280

3
5
5
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
26.1K 1% .125W TF TC=O+-100
26.1K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA4Rll
AlDA4R12
AlOA4R13
AlOA4R14
AlOA4R15

0757-0438
0757-0441
0757-0438
0698-3160
0698-3447

3
8
3
8
4

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-1% .125W TF TC=O+-100
8.251: +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
31.6K 1% .125W TF TC=O+-100
422 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA4R16
AlOA4R17
AlOA4R18
AlOA4R19
AlOA4R20

0757-0441
0757-0441
0757-0438
0757-0346
0757-0346

8
8
3
2
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

8.251: +-1% .125W
8.25K +-1% .125W
5.11K +-I% .125W
10 +-1% .125W TF
10 +-1% .125W TF

19701
19701
19701
91637
91637

SFR25H
SFR25H
SFR25H
CMF-55-1, T-l
CMF-55-1, T-l

AlOA4R21
AlOA4R22
AlOA4R23
AlOA4R24
AlOA4R25

0757-0346
0757-0421
0757-0466
0698-3156
0698-0083

2
4
7
2
B

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1X .125W TF TC=O+-100
825 +-1% .125W TF TC=D+-100
1lOK +-1% .125W TF TC=O+-100
14.7K 1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100

91637
19701
19701
19701
19701

CMF-55-1, T-l
SFR25H
SFR25H
SFR25H
SFR25H

AlOA4R26
AlOA4R27
AlOA4R28
AlOA4R29*
AlOA4R30

0698-0083
0698-3440
0757-0346
0757-0397
0757-0280

B
7
2
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K 1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=D+-100
68.1 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
91637
19701
19701

SFR25H
SFR25H
CMF-55-1, T-l
SFR25H
SFR25H

AlDA4R31
AlOA4R32
AlOA4R33*
AlOA4R34
AlOA4R35

0698-3156
0698-7219
0757-0397
0698-3440
0757-0394

2
6
3
7
D

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

14.7K 1% .125W TF TC=O+-100
196 +-1% .05W TF TC=O+-100
68.1 +-1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AlOA4R36
AlOA4R37
AlOA4R38
AlOA4R39
AlOA4R40

0757-0279
0757-1094
0698-7192
0698-7230
0698-7188

D
3
4
1
3

1
1
1
1
1

RESISTOR 3.16K +-1% .125W TF TC=O+-100
RESISTOR 1.47K +-1X .125W TF TC=O+-100
RESISTOR 14.7 +-1% .05W TF TC=O+-100
RESISTOR 562 +-1% .05W TF TC=O+-100
RESISTOR 10 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
50635

AlOA4R41
AlOA4R42
AlOA4R43
AlOA4R44
AlOA4R45

0698-7200
0698-7236
0698-7248
D698-7236
D698-7230

5
7
1
7
1

1
1
1
1
1

?ESISTOR
?ESISTDR
?ESISTOR
7ESISTOR
?ESISTDR

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

AlOA4R46

3698-7218

i

1

7ESISTOR 178 +-1% .05W TF TC=O+-100

19701

50635

TF TC=O+-100
TF TC=O+-100
TF TC=D+-100
TC=O+-100
TC=O+-100

31.6 +-1% .05W TF TC=O+-100
1K +-1% .05W TF TC=O+-100
3.16K +-1% .05W TF TC=O+-100
1K +-1% .05W TF TC=O+-100
562 +-1% .05W TF TC=O+-100

-

*Indicates factory-selected value

85660-60025 Parts List
Page 3 of 4

HP Part Number 85660-60025
AlOA4 PLL 3 Up Converter

Reference
Designation

HP Part
Number

AlOA4R47
AlOA4R48
AlOA4R49
AlOA4TPl

D698-7200
0698-7218
D698-7207
1251-0600

AlOA4TP2
AlOA4TP3
AlOA4Ul
AlOA4U2
AlOA4U3

1251-0600
1251-0600
5081-8117
1826-1058
1820-1383

AlOA4U4
AlOA4U5
AlOA4U6
AlOA4U7
AlOA4Wl

1810-0205
1820-0817
1820-0802
1955-0063
35660-60093

31
1
1
1
1

RESISTOR 31.6 +-1% .05W TF TC=O+-100
RESISTOR 178 +-1% .05W TF TC=O+-100
RESISTOR 61.9 +-1% .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ

0
0
3
3
5

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
SCREEN 1826-0092
IC OP AMP GP 8-TO-99 PKG
IC CNTR ECL 8CD POS-EDGE-TRIG

7
8
1
0
9

1
1
1
1
1

NETWORK-RES 8-SIP 4.7K OHM X 7
IC FF ECL D-M/S DUAL
IC GATE ECL NOR QUAD 2-INP
U-WAVE MIXER 500 MHZ MAX
CABLE ASSEMBLY, VIOLET (INCLUDES Jl)

-

8566040025 Parts List
Page 4 of 4

Mfr
Code

Description

*Indicates factory-selected value

SQ
SQ
SQ

Mfr Part
Number

19701
19701
19701
27264

50635
50635
50635
16-06-0034

27264
27264
28480
06665
04713

16-06-0034
16-06-0034
5081-8117
OP-02CJ
MC10138L

11236
04713
04713
15542
28480

750-81
MC10131P
MC10102P
SRA-1-32
85660-60093

/f
r-&y

I
II

u

\

-

\Z
KS ?J
IN

AlOA5
AlOA5 Phase Lock Loop 2 (PLL2) Voltage Controlled
Oscillator (VCO), Circuit Description
75 to 150 MHz VCO @
The VCO is a varactor tuned oscillator which tunes 75 to 150 MHz.
CR3, and CR4 form a series-tuned resonant circuit with L4 and L5.
connects the emitters of Ql and Q2. Q2 is a common-base amplifier
made up primarily of L9, R14, and R15. The voltage across the load
emitter-follower Ql, which drives the series resonant circuit.

Varactors CRl, CR2,
This series circuit
whose load impedance is
is coupled to the base of

Bias Network/50 kHz Low-Pass Filter @
Transistors Q5 and Q6 and associated components form a filtered -32 V source to bias the
varactor tuning diodes. In the absence of tuning current, the varactor bias is set by R2 to
approximately -17 V. Tuning current from the AlOA8 PLL2 Discriminator passes through
the 50 kHz low-pass filter and acts to pull this bias voltage in a positive direction. Tuning
sensitivity is set by R4, to -10 Mhz/mA.

75 to 150 MHz Output Buffer @
Q4 is a grounded-base amplifier to isolate the VCO from the load circuits. The output of Q4
is filtered, attenuated, and used to drive the AlOA7 PLL2 Divider.

Frequency Dividers @
Q3 isolates the VCO from the dividers and develops the required drive voltage. Note that all
of the dividers and gates are ECL with Vcc hooked to +5 V and VEE grounded. U3 divides
the VCO frequency by 5; to the range of 15 to 30 MHz. U6C provides isolation. U2 divides
the output by 5; to the range of 3 to 6 MHz. U2 then further divides by 2 and Ul divides
the output by 10, to the range of is 0.15 to 0.30 MHz. The output of Ul is fed to the AlOh
PLL2 Discriminator.

Small Span Switch @
U5 functions as a single-pole double-throw switch, controlled by SW2. For frequency spans
greater than n x 5 kHz up to n x 100 kHz, SW2 is TTL high, routing the 3 to 6 MHz signal
from U2 through U5C, U5B, and U5D to the AlOA4 PLL3 Up Converter (n is the harmonic
mixing number). When the frequency span is n x 5 kHz or less, or greater than n x 5 MHz,
SW2 is low, routing the 0.15 to 0.30 MHz signal from Ul through U5A and U5D to the PLL3
Up Converter. R33 and R34 shift the TTL levels to ECL levels.

AlOA5 1

0.1 to 5 MHz Span Switch @
For frequency spans of greater than n x 100 kHz up to n x 5 MHz, SW1 is TTL low, routing
the 15 to 30 MHz signal from U3 through U6D, U7D, and Tl to the AlOAl PLLl VCO.
When SW1 is high, the circuit provides 90 dB of isolation. R35 and R36 shift the TTL levels
to ECL levels.

HP Part Number 85660-60168
Al OA5 PLL 2 VCO
Reference
Designatior

HP Part
Number

t Qt

Description

AlOA5

85660-60168

AlOA5Cl
AlOA5C2
AlOA5C3
AlOA5C4
AlOA5C5

0160-0300
0160-0155
0160-0154
0160-3879
0160-4084

AlOASC6
AlOA5C7
Al OA5C8
AlOA5C9
AlOA5ClO

0160-3879
0160-3879
0160-3878
0160-4084
0160-3878

AlOA5Cll
AlOASC12
AlOA5C13
AlOA5C14
AlOA5C15

,

Mfr
Code

Mfr Part
Number

1

BOARD ASSEMBLY. PLL2 VCD

2848C

85660-60168

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD O.luF

84411
84411
84411
04222
56289

HEW-238M
HEW-238M
HEW-238M
SR201C103MAAH
lC2OX7R104M0508

1
;
f
f
f

1
1
1
1
1

CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAP-FXD 1OOOpF 100
CAP-FXD O.luF 50 V
CAP-FXD 1OOOpF 100

V

04222
04222
04222
56289
04222

SR2OlC103MAAH
SR201C103MAAH
SR2OlC102MAAH
lC20X7R104MO50B
SR201C102MAAH

0160-3878
0160-4525
0160-4524
0160-3879
0160-3878

t
i
I
I
6

1
1
1
1
1

CAP-FXD 1OOOpF 100
CAPACITOR-FXD 29PF
CAPACITOR-FXD 24PF
CAPACITOR-FXD .OlUF
CAP-FXD 1OOOpF 100

V
+-5% LOOVDC CER 0+-30
+-5% ZOOVDC CER 0+-30
+-20% 1OOVDC CER
V

04222

04222
04222

SR201C102MAAH
FD12COG2029OJ
FD12COG2D24OJ
SR201C103MAAH
SR2OlC102MAAH

AlOA5C16
AlOA5C17
AlOA5C18
AlOA5C19
AlOA5C20

0160-3878
0160-3878
0160-4084
0160-4892
0160-4084

6
6
a
6
I-

1
1
1
1
1

CAP-FXD
CAP-FXD
CAP-FXD
"AP-FXD
CAP-FXD

04222
04222
56289
56289
56289

SR201C102MAAH
SR2OlC102MAAH
lC20X7R104M05OB
2C37Z5UlD5M025C
lC20X7R104M0508

AlOA5C21
AlOA5C22
AlOA5C23
AlOA5C24
AlOA5C25

0160-0571
0160-4084
0160-4084
0160-4084
0160-3877

i
I
t
t
I

1
1
1
1
1

CAPACITOR-FXD
CAP-FXD O.luF
CAP-FXD O.luF
CAP-FXD O.luF
CAPACITOR-FXD

470PF +-20% 1OOVDC CER
50 V
50 V
50 V
1OOPF +-20X 200VDC CER

04222
56289
56289
56289
04222

SR201C471MAAH
lC20X7R104M0508
lC20X7R104MO508
lC20X7R104M0508
SR202ClOlMAAH

AlOA5C26
AlOA5C27
AlOA5C28
AlOA5C29
AlOA5C30

0160-4084
0160-4084
0160-4084
0180-2141
0180-2141

f
t
f
f
f

1
1
1
1
1

CAP-FXD O.luF
CAP-FXD O.luF
CAP-FXD O.luF
CAPACITOR-FXD
CAPACITOR-FXD

50 V
50 V
50 V
3.3UF+-10%
3.3UF+-10%

56289
56289
56289
56289
56289

lC20X7R104M0508
lC2OX7R104M050B
lC20X7R104MO5OB
1500335X905OB2-DYS
15OD335X905082-DYS

AlOA5C31
AlOA5C32
AlOA5C33
AlOA5C34
AlOA5C35

0180-1715
0180-1746
0160-4084
0180-0229
0160-4084

E
E
i
7
a

1
1
1
1
1

CAPACITOR-FXD 15OUF+-10% 6VDC TA
CAPACITOR-FXD 15UF+-10% 20VDC TA
CAP-FXD O.luF 50 V
CAP-FXD 33uF 10 V TA
CAP-FXD O.luF 50 V

56289
56289
56289
56289
56289

150D157X9006R2-DYS
1500156X902OB2-DYS
lC20X7R104M0508
150D336X901082-DYS
lC2DX7R104M050B

AlOASC36
AlOASC37
AlOA5C38
AlOA5CRl
AlOA5CR2

0180-1746
0160-4084
3160-4084
3122-0085
3122-0085

5
a

1
1
1
1
1

CAPACITOR-FXD 15UF+-10% 20VDC TA
ZAP-FXD O.luF 50 V
:AP-FXD O.luF 50 V
1IDDE-VVC 2.2PF 7% C3/C25-MIN=4.5
IIDDE-VVC 2.2PF 7% C3/C25-MIN=4.5

56289
56289
56289
so545
so545

1500156X9020B2-DYS
lC20X7R104MO508
lC20X7R104M0508
lS2208(B)
lS2208(8)

AlOA5CR3
AlOA5CR4
AlOA5J2
AlOA5J3
AlOASJ4

3122-0085
3122-0085
1250-0544
1250-0544
L250-0544

1
1
1
1
1

)IODE-VVC 2.2PF 7% C3/C25-MIN=4.5
IIDDE-VVC 2.2PF 7% C3/C25-MIN=4.5
:ONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
:ONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
:ONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM

so545
so545
98291
98291
98291

132208(B)
152208(B)
051-049-0000-220
051-049-0000-220
051-049-0000-220

AlOA5J5

1250-0544

1

:ONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM

98291

051-049-0000-220

8
1
1

2700PF +-lo% 200VDC POLYE
3300PF +-lo% 200VDC PDLYE
2200PF +-lo% LOOVDC POLYE
.OlUF +-20% 1OOVDC CER
50 V
+-20% 1OOVDC CER
+-20% 1OOVDC CER
V

1OOOpF 100 V
IOOOpF 100 V
O.luF 50 V
1uF 25 V
O.luF 50 V

50VDC TA
50VDC TA

-

*Indicates factory-selected value

85660-60168 Parts List
Page 1 of 3

HP Part Number 85660-60168
AlOA5 PLL 2 VCO
-

Reference
Designation

HP Part
Number

C

D

Mfr Part
Number

Mfr
Code

Description

at]
-

AlOA5Ll
AlOA5L2
AlOA5L3
AlOA5L4

85660-80031
85660-80031
9140-0144
9100-3358

7
7
a
a

1
1
1
1

I NOUCTOR
INDUCTOR
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105DINDUCTOR RF-CH-MLD 162NH +-5% .2D-

28480
28480
99800
24226

85660-80031
85660-80031
1025-36
15M160J-2

AlOA5L5
AlOA5L6
AlOA5L7
AlOA5L8
AlOA5L9

9100-3358
9100-2251
9140-0158
9100-2247
9100-2891

0
0
6
4
4

1
1
1
1
1

INDUCTOR RF-CH-ML0 162NH +-5% .2DINDUCTOR RF-CH-ML0 220NH +-lo% .105DINDUCTOR RF-CH-MLD 1UH +-lo% .105DINDUCTOR RF-CH-MLD 1OONH +-lo% .105DINDUCTOR RF-CH-MLD 50NH +-lo% .105D-

24226
24226
32159
24226
24226

15M160J-2
lOM220K
lA1002M +-10x
1OMlOOK
lOM050K-1

AlOA5LlO
AlOA5Lll
AlOA5L12
AlOA5L13
AlOA5L14

9100-2891
9140-0158
9100-2247
9100-2258
9100-2250

4
6
4
7
9

1
1
1
1
1

INDUCTOR RF-CH-MLD 50NH +-lo% .105DINDUCTOR RF-CH-MLD 1UH +-lo% .1050INDUCTOR RF-CH-ML0 1OONH +-10X .105DINDUCTOR RF-CH-ML0 1.2UH +-lo% .105DINDUCTOR RF-CH-MLD 180NH +-lo% .105D-

24226
32159
24226
99800
24226

lOM050K-1
lA1002M +-10X
1OMlOOK
1025-22
lOM180K

AlOA5L15
AlOA5L16
AlOA5L17
AlOA5L18
AlOA5L19

9100-2247
9100-2247
9100-2247
9100-2247
9100-2247

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

+-lo%
+-IO%
+-lo%
+-lo%
+-10X

.105D.105D.1050.1050.1050-

24226
24226
24226
24226
24226

1OMlOOK
1OMlOOK
1OMlOOK
1OMlOOK
1OMlOOK

AlOA5L20
AlOA5L21
AlOA5L22
AlOA5L23
AlOA5MPl

9100-2247
9100-1618
9100-1618
9100-1618

4
1
1
1

1
1
1
1

INDUCTOR RF-CH-ML0 1OONH +-lo%
INDUCTOR RF-CH-MLD 5.6UH +-lo%
INDUCTOR RF-CH-MLD 5.6UH +-lo%
INDUCTOR RF-CH-MLD 5.6UH +-10x
NOT ASSIGNED

.105D.1660.166D.166D-

24226
99800
99800
99800
28480

1OMlOOK
1537-30
1537-30
1537-30
85660-20168

AlOA5MP4
AlOA5MP5
AlOA5MP6
AlOA5MP7
AlOA5MP8

2200-0101
2950-0078
2190-0124
85660-20056
86701-40001

0
9
4
0
9

1
1
1
1
2

SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM IO-32-THD .067-IN-THK
WASHER LOCK .195ID
COVER PC, PLL2 VCO
EXTRACTOR PC

77250
74163

500220

28480
28480

85660-20056
86701-40001

AlOA5Ql
AlOA5Q2
Al OA5Q3
AlOA5Q4
AlOA5Q5

1854-0610
1854-0610
1854-0345
1854-0345
1853-0281

0
0
8
8
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

SI TO-46 FT=800MHZ
SI TO-46 FT=BOOMHZ
2N5179 SI TO-72 PD=200MW
2N5179 SI TO-72 PD=200MW
2N2907A SI TO-18 PD=400MW

04713
04713
04713
04713
04713

2N5179
2N5179
2N2907A

AlOA5Q6
AlOASRl
AlOA5R2
AlOA5R3
AlOA5R4

1853-0281
0698-0085
2100-3273
0757-0428
2100-3273

9
0
1
1
1

1
1
1
1
1

TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
RESISTOR 2.61K 1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 10% TKF SIDE-ADJ l-TRN
RESISTOR 1.62K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 10% TKF SIDE-ADJ l-TRN

04713
19701
32997
19701
32997

2N2907A
SFR25H
3386X-Y46-202
SFR25H
3386X-146-202

AlOA5R5
AlOA5R6
AlOA5R7
AlOA5R8
AlOA5R9

0757-0447
0757-0401
0698-7205
0698-7205
0757-0346

4
0
0
0
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

16.2K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
51.1 +-1% .05W TF TC=O+-100
51.1 +-1% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
91637

SFR25H
SFR25H
50635
50635
CMF-55-1, T-l

AlOA5RlO
AlOA5Rll
AlOA5R12
AlOA5R13

0698-7228
0698-7228
0698-7188
0757-0346

7
7
8
2

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

464 +-1% .05W TF TC=O+-100
464 +-1% .05W TF TC=O+-100
10 +-1% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
91637

50635
50635
50635
CMF-55-1, T-l

RF-CH-MLD
RF-CH-MLD
RF-CH-ML0
RF-CH-MLD
RF-CH-MLD

NPN
NPN
NPN
NPN
PNP

1OONH
1OONH
1OONH
1OONH
1OONH

-

85660-60168 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60168
AlOA5 PLL 2 VCO
Reference
Designation

HP Part
Number

f

ai

I

Mfr
Code

Description

Mfr Part
Number

AlOA5R14

0757-0398

1

RESISTOR 75 +-1% .125W TF TC=O+-100

19701

SFR25H

AlOA5R15
AlOA5R16
AlOA5R17
AlOA5R18
AlOA5R19

0757-0398
0757-0418
0757-0346
0757-0419
0757-0346

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

75 +-I% .125W
619 +-1% .125W
10 +-1% .125W
681 +-1% .125W
10 +-1% .125W

19701
19701
91637
19701
91637

SFR25H
SFR25H
CMF-55-1, T-l
SFR25H
CMF-55-1, T-l

AlOA5R20
AlOA5R21
AlOA5R22
AlOA5R23
AlOA5R24

0757-0400
0757-0398
0757-0398
0757-0401
0698-4037

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

90.9 +-1% .125W TF TC=O+-100
75 +-1% .125W TF TC=O+-100
75 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
46.4 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA5R25
AlOA5R26
AlOA5R27
AlOA5R2B
AlOA5R29

3698-0083
3757-0280
3698-3440
3757-0280
1757-0316

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K 1% .125W TF TC=O+-100
1K +-I% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
1K +-I% .125W TF TC=O+-100
42.2 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA5R30
AlOA5R31
AlOA5R32
AlOA5R33
AlOA5R34

1757-0280
1757-0280
1698-3446
1698-3444
0757-0419

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
383 1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
681 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA5R35
AlOA5R36
AlOA5R37
AlOA5R38
AlOA5R39

0698-3444
0757-0419
0757-0442
0757-0442
0757-0465

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
681 +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOASR40
AlOA5R41
AlOASR42
AlOA5R43
AlOA5R44

3757-0280
3757-0401
3757-0397
3698-3132
1757-0416

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1X .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
68.1 +-1% .125W TF TC=O+-100
261 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA5Tl
AlOA5TPl
AlOA5Ul
AlOA5U2
AlOA5U3

18553-6012
1251-0600
1820-1383
1820-1383
1820-2047

1
1
1
1
1

TRANSFORMER, RF BLUE
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
IC CNTR ECL BCD POS-EDGE-TRIG
IC CNTR ECL BCD POS-EDGE-TRIG
IC DIVR ECL QUINARY

28480
27264
04713
04713
52648

08553-6012
16-06-0034
MC10138L
MC10138L
SP8620BDG

AlOA5U4
AlOA5U5
AlOA5U6
AlOA5U7
AlOA5Wl

.810-0205
.820-0802
.820-0802
.820-0802
15660-60088

1
1
1
1
1

NETWORK-RES 8-SIP 4.7K OHM X 7
IC GATE ECL NOR QUAD 2-INP
IC GATE ECL NOR QUAD 2-INP
IC GATE ECL NOR QUAD 2-INP
:ABLE ASSEMBLY, GRAY/ORANGE
(INCLUDES ~1)

11236
04713
04713
04713
28480

750-81
MC10102P
MC10102P
MC10102P
85660-60088

,

(
(
I
:
;
;
L
L
:L
I

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

*Indicates factory-selected value

SQ

8X60-60168 Parts List
Page 3 of 3

P
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-

0

;I!
K
s
0
2
2
2
2
;:
%
=f.
0
Iz
z
z
?
zi
s
W

-I<
;a

u
LO

tf
gk.5
L
NI
gvlI’

VI

I

G1k
cl
I+

+

c31

c32

1

z
N

AIOAG
AlOA6 Phase Lock Loop 2 (PLL2) Phase Detector,
Circuit Description
The purpose of the AlOA6 PLL2 Phase Detector is to compare the output of the AlOA5
PLL2 VCO (after division by the AlOA7 PLL2 Divider) to the 500 kHz Reference from the
A7Al Reference Phase Detector. The phase difference is converted to an error voltage used to
correct the PLL2 VCO frequency.

Phase-Frequency Detector @
The phase-frequency detector responds to the phase difference between the 500 kHz reference
input and the divided input from the AlOA7 PLL2 Divider. Assuming both flip-flops U6A
and U6B have been cleared, Q9 is on and QlO is off. Q9 supplies about 3 mA current which
is sunk by current source QS resulting in approximately zero current flow through the 50
kHz low-pass filter to U3. On AlOA6 PLL2 Phase Detector, HP part number 85660-60276,
transistor Qll is added as an active pulldown to reduce glitches that could cause momentary
false unlocks.
A pulse from the PLL2 Divider on Pl-19 clocks the Q output of U6A high, turning Q9 off. A
subsequent reference pulse on Pl-20 clocks the Q output of U6B high, which will immediately
reset both flip- flops through U7A. Thus the effect of a pulse at Pl-19 leading one at Pl-20 is
to momentarily reduce the output current. Therefore, if the divided output leads the reference
in phase, the current decreases. Similarly, if the reference phase leads, the current increases
because QlO is connected to the Q output of U6B.
If the two inputs have different frequencies, the pulse relationships become complicated, but
the net effect is positive output current if the reference frequency is high.
U3 serves as an amplifier to provide the high currents necessary to rapidly charge the
integrating capacitor C7 in the following stage. VR2 and VR3 serve as clamps, limiting the
output swing to f5.8 V.

Unlock Indicator 0%~
When the phase lock loop is in a steady state condition, the voltage at TPl is zero. If
unlocked, the voltage will be non-zero except for transients passing through zero. When
the voltage TPl exceeds f0.7 V, either Ql or Q2 is turned on, discharging Cl5 or Cl4
respectively and tripping comparator Ul. When TPl voltage settles to less than f0.7 V, Cl4
and Cl5 must recharge before the comparator is reset. This takes 5 ms. The comparator
output is TTL high for an unlock condition and remains there for 5 ms after a lock condition
is established.

AlOA6 1

Analog Integrator-Sample and Hold @
U2 and C7 form an integrator which integrates current flowing from U3 through R8. The
output of the integrator is summed with other signals in U4 and ultimately controls the VCO
frequency. In steady state conditions, TP3 will settle to a constant voltage which tunes the
VCO to the correct frequency. If the voltage at TP3 is constant, the input current must be
zero, so opening FET switch Q3 will not change the voltage at TP3. When PLL2 is being
used in its swept mode, the loop is locked to a start frequency set by AlOA7 PLL2 Divider,
then Q3 is opened. This breaks the lock loop, permitting a sweep to be executed.
Q3 is closed with zero gate voltage, and open with -7 V gate voltage. The gate drive comes
from Q6 and Q7, which translate the TTL level lock-sweep signal on Pl-2 to the O/-7 V
levels. Pl-2 is also connected to U6A and QS, which results in zero voltage at TPl during a
sweep. A negative voltage may turn on Q3, changing the charge stored on C7.

Digital Integrator @
The analog integrator does not have sufficient control range to correct initial warm-up drift
and long term aging. If TP3 goes below -4.7 V, Q5 is turned on and its collector voltage is
pulled down to -1.4 V. At this point, CR4 and CR3 become forward biased, clamping U2 and
preventing further negative movement of TP3.
Simultaneously, the input of U7B will have been pulled low, which turns on a 2 kHz oscillator
made up of U7C, R20, and Cll. This clocks the count up input of counters U8 and U9,
which drives DAC UlO. UlO sources negative current to the summing junction of U4 and this
current increases in magnitude as U8 and U9 count up. When the current reaches a value
which tunes the VCO to the proper frequency, TP3 moves positive, shutting off the oscillator
and returning control to the analog integrator. An analogous sequence occurs when TP3 tries
to rise above +5.7 V.

Output Amplifier @
U4 serves to sum signals from the analog integrator, DAC, and Rll. Rll is a high frequency
signal path shunting the integrators.

2 AlOA6

HP Part Number 85660-60130
AlOA6 PLL 2 Phase Detector
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

AlOA6

85660-60130

5

1

BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
PHASE DETECTOR (SERIAL PREFIX: 2410~)

28480

85660-60130

AlOAGCl
AlOA6C2
AlOA6C3
AlOA6C4
AlOA6C5

0180-0197
0160-0574
0160-3879
0160-4892
0160-4892

B
3
7
6
6

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

56289
28480
28480
28480
28480

150D225X9020A2
0160-0574
0160-3879
0160-4892
0160-4892

AlOA6C6
AlOA6C7
AlOA6C8
AlOA6C9
AlOAGClO

0160-2199
0160-5609
0160-4084
0160-0573
0160-2199

2
5
8
2
2

1
1
1
1
1

CAPACITOR-FXD 30PF +-5X 300VDC MICA
CAPACITOR-FXD IOUF +-lo% 50VDC MET-POLYC
CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD 4700PF +-20% 1OOVDC CER
CAPACITOR-FXD 30PF +-5% 300VDC MICA

28480
28480
28480
28480
28480

0160-2199
0160-5609
0160-4084
0160-0573
0160-2199

AlOAGCll
AlOA6C12
AlOA6C13
AlOA6C14
AlOA6C15

0180-0291
0180-0291
0160-0575
0160-0575
0160-0575

3
3
4
4
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

56289
56289
28480
28480
28480

1500105X9035A2
1500105X9035A2
0160-0575
0160-0575
0160-0575

AlOA6C16
AlOA6C17
AlOA6ClB
AlOA6C19
AlOA6C20

0160-4084
0180-0197
0160-4084
0180-0291
0160-4084

8
8
8
3
8

1
1
1
1
1

CAPACITOR-FXD .lUF +-20% 50VDC CER
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD .lUF +-20% 50VDC CER
CAPACITOR-FXD lUF+-10% 35VOC TA
CAPACITOR-FXD .lUF +-20x 50VDC CER

28480
56289
28480
56289
28480

0160-4084
150D225X9020A2
0160-4084
1500105X9035A2
0160-4084

AlOA6C21
AlOA6C22
AlOA6C23
AlOA6C24
AlOAGCRl

0180-0197
0180-0197
0160-2437
0160-2437
1901-0033

8
8
1
1
2

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% EOVDC TA
CAPACITOR-FXD 2.2UF+-10% EOVDC TA
CAPACITOR-FDTHRU SOOOPF +80 -20% 200V
CAPACITOR-FDTHRU 5000PF +80 -20% 200V
DIODE-GEN PRP 180V 200MA DO-7

56289
56289
28480
28480
28480

150D225X9020A2
150D225X9020A2
0160-2437
0160-2437
1901-0033

AlOA6CR2
Al OA6CR3
AlOA6CR4
AlOAGLl
AlOA6L2

1901-0376
1901-0376
1901-0033
9100-1651
9140-0144

6
6
2
2
0

1
1
1
1
1

DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 180V 200MA DO-7
INDUCTOR RF-CH-MLD 750UH +-5% .2DX.45LG
INDUCTOR RF-CH-MLD 4.7UH 10% .105DX.26LG

28480
28480
28480
28480
28480

1901-0376
1901-0376
1901-0033
9100-1651
9140-0144

AlOA6L3
AlOA6L4
AlOA6MP2
AlOA6MP3
AlOA6MP4

9140-0144
9140-0144
2190-0009
2200-0101
2580-0002

0
0
4
0
4

1
1
2
2
2

INDUCTOR RF-CH-MLD 4.7UH 10% .105DX.26LG
INDUCTOR RF-CH-MLD 4.7UH 10% .105OX.26LG
WASHER-LK INTL T NO. 8 .168-IN-ID
SCREW-MACH 4-40 .188-IN-LG PAN-HO-POZI
NUT-HEX-DBL-CHAM 8-32-THD .085-IN-THK

28480
28480
28480
00000
28480

9140-0144
9140-0144
2190-0009
ORDER BY DESCRIPTION
2580-0002

AlOA6MP5
AlOA6MP6
AlOA6MP7
AlOAGQl
AlOA6Q2

8150-0013
85660-20057
86701-40001
1853-0281
1854-0477

4
1
9
9
7

1
1
2
1
1

WIRE, 22 AWG 1x22
CVR PC 2 PHSDETC
EXTRACTOR PC
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW

92194
28480
28480
04713
04713

298
85660-20057
86701-40001
2N2907A
2N2222A

AlOA6Q3
Al OA6Q4
AlOA6Q5
AlOA6Q6
AlOA6Q7

1855-0386
1853-0322
1854-0557
1854-0404
1853-0281

9
9
4
0
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

04713
01275
01295
28480
04713

2N4392
2N2946A
2N2432A
1854-0404
2N2907A

2.2UF+-10% 20VDC TA
.022UF +-20% IOOVDC CER
.OlUF +-20% 1OOVDC CER
1UF +-20% 25VDC CER
1UF +-20% 25VDC CER

lUF+-10% 35VDC TA
lUF+-10% 35VDC TA
.047UF
.047UF
.047UF

J-FET 2N4392 N-CHAN D-MODE TO
PNP 2N2946A SI TO-46 PD=400MW
NPN 2N2432A SI TO-18 PD=300MW
NPN SI TO-18 PD=360MW
PNP 2N2907A SI TO-18 PD=400MW

*Indicates factory-selected value

85660-60130 Parts List
Page 1 of 3

HP Part Number 85660-60130
AlOA6 PLL 2 Phase Detector
Reference
Designatior 1

HP Part
Number

31

Mfr
Code

Description

Mfr Part
Number

AlOA6Q8
AlOA6Q9
AlOA6QlO
AlOAGRl
AlOA6R2

1854-0404
1853-0007
1853-0007
0757-0280
0757-0317

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1% .125W TF TC=O+-100

28481
0471:
0471:
19701
19701

1854-0404
2N3251
2N3251
SFR25H
SFR25H

AlOA6R3
AlOA6R4
AlOA6R5
AlOA6R6
AlOA6R7

0757-0280
0757-0317
0698-0083
0698-3440
I0757-0123

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
1.33K +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
34.81: +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R8
AlOA6R9
AlOAGRlO
AlOAGRll
AlOA6R12

I0698-0082
I3757-0442
I3698-3260
(3757-0290
(3757-0420

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

464 1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
464K 1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R13
AlOA6R14
AlOA6R15
AlOA6R16
AlOA6R17

I1698-0084
i3757-0280
(1757-0442
(1757-0439
(1757-0444

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
6.81K +-1% .125W TF TC=O+-100
12.1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R18
AlOA6R19
AlOA6R20
AlOA6R21
AlOA6R22

(1698-0084
(1757-0280
(1698-3445
(1698-3445
(1757-0280

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R23
AlOA6R24
AlOA6R25
AlOA6R26
AlOA6R27

(1757-0279
c)698-3450
c1757-0462
c1757-0467
C1698-3266

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.16K +-1% .125W TF TC=O+-100
42.2K 1% .125W F TC=O+-100
75K +-1% .125W TF TC=O+-100
121K +-1% .125W TF TC=O+-100
237K 1% .125W TF TC=O+-100

19701
24546
19701
19701
19701

SFR25H
C4-l/8-TO-4222-F
SFR25H
SFR25H
SFR25H

AlOA6R28
AlOA6R29
AlOA6R30
AlOA6R31
AlOA6R32

C1698-3460
C1757-0438
C1698-0084
C1698-3154
C1757-0438

1
1
1
1
1

7ESISTOR
7ESISTOR
1ESISTOR
7ESISTOR
7ESISTOR

422K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

RlOA6R33
410A6R34
410A6R35
410A6R36
410A6TPl

01698-0085
0 1698-3445
0 1757-0346
0 1757-0440
1 251-0600

1
1
1
1
1

IESISTOR 2.61K 1% .125W TF TC=O+-100
{ESISTOR 348 1% .125W TF TC=O+-100
IESISTOR 10 +-1X .125W TF TC=O+-100
IESISTOR 7.5K 1% .125W TF TC=O+-100
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
91637
24546
27264

SFR25H
SFR25H
CMF-55-1, T-l
C4-l/8-TO-7501-F
16-06-0034

410A6TP2
410A6TP3
410A6TP4
llOA6TP5
410A6Ul

1 251-0600
1 251-0600
1 251-0600
1 251-0600
1 826-0026

1
1
1
1
1

:ONNECTOR-SGL
:ONNECTOR-SGL
XNNECTOR-SGL
:ONNECTOR-SGL
[C COMPARATOR

27264
27264
27264
27264
27014

16-06-0034
16-06-0034
16-06-0034
16-06-0034
LM311H

ilOA6U2
ilOA6U3
AlOA6U4

1 826-0459
1 826-0059
I .826-0059

1
1
1

IC OP AMP 14-DIP-C PKG
:C OP AMP GP TO-99 PKG
IC OP AMP GP TO-99 PKG

27014
27014
27014

LH0042CD
LM201AH
LM201AH

85660-60130 Parts List
Page 2 of 3

CONT
CONT
CONT
CONT
PRCN

PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14~MM-BSC-SZ
TO-99 PKG

*Indicates factory-selected value

SQ
SQ
SQ
SQ

HP Part Number 85660-60130
AlOA6 PLL 2 Phase Detector

Reference
Designation

HP Part
Number

31
-

Description

Mfr
Code

Mfr Part
Number

AlOA6U5
AlOA6U6

1820-0429
1820-1212

8
9

1
1

IC V RGLTR-FXD-POS 4.8/5.2V TO-39 PKG
IC FF TTL LS J-K NEG-EDGE-TRIG PRESET/CL

27014
01295

LM309H
SN74LS112AN

AlOA6U7
AlOA6U8
AlOA6U9
AlOAGUlO
AlOA6VR2

1820-1425
1820-1194
1820-1194
1826-0448
1902-0041

6
6
6
3
4

1
1
1
1
1

IC SCHMITT-TRIG TTL LS NAN0 QUAD 2-INP
IC CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
IC CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
D/A lo-BIT 16-PLASTIC CMOS
DIODE-ZNR 5.11V 5% DO-35 PD=.4W

01295
01295
01295
24355
04713

SN74LS132N
SN74LS193N
SN74LS193N
AD7533LN(SEL)

AlOA6VR3
AlOA6VR4

L902-0041
1902-3002

4
3

1
1

DIODE-ZNR 5.11V 5% DO-35 PD=.4W
DIODE-ZNR 2.37V 5% DO-7 PO=.4W TC=-.074%

04713
04713

-

*Indicates factory-selected value

8X60-60130 Parts List
Page 3 of 3

HP Part Number 85660-60229
AlOA6 PLL 2 Phase Detector
Reference
Designatior

HP Part
Number

C
c

l-

Description

at

Mfr
Code

Mfr Part
Number

-

AlOA6

85660-60229

AlOAGCl
AlOA6C2
AlOA6C3
AlOA6C4
AlOA6C5

0180-0197
0160-0574
0160-4832
0160-4892
0160-4892

AlOA6C6
AlOA6C7
AlOA6C8
AlOA6C9
AlOAGClO

1

BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLLZ)
PHASE DETECTOR (SERIAL PREFIXES:
2416A-2504A)

28480

85660-60229

I
:
1
t
f

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% LOVDC TA
CAPACITOR-FXD .022UF +-20% 1OOVDC CER
CAPACITOR-FXO .OlUF +-lo% 1OOVDC CER
CAPACITOR-FXD 1UF +-20% 25VDC CER
CAPACITOR-FXD 1UF +-20% 25VDC CER

56289
28480
28480
28480
28480

150D225X9020A2
0160-0574
0160-4832
0160-4892
0160-4892

0160-2199
0160-5609
0160-4835
0160-0573
0160-2199

i
c
;
i
2

1
1
1
1
1

CAPACITOR-FXD 30PF +-5% 300VDC MICA
CAPACITOR-FXD 1OUF +-lo% 50VDC MET-POLYC
CAPACITOR-FXD .lUF +-lo% SOVDC CER
CAPACITOR-FXD 4700PF +-20% 1OOVDC CER
CAPACITOR-FXD 30PF +-5% 300VDC MICA

28480
28480
28480
28480
28480

0160-2199
0160-5609
0160-4835
0160-0573
0160-2199

AlOAGCll
AlOA6C12
AlOA6C13
AlOA6C14
AlOA6C15

0180-0291
0180-0291
0160-0575
0160-0575
0160-0575

3
3

4
4
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

56289
56289
28480
28480
28480

150D105X9035A2
150D105X9035A2
0160-0575
0160-0575
0160-0575

AlOA6C16
AlOA6C17
AlOA6C18
AlOA6C19
AlOA6C20

3160-4835
3180-0197
3160-4835
3180-0291
1160-4835

7
8
7
3
7

1
1
1
1
1

CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FXD .lUF +-10x 50VOC CER
CAPACITOR-FXO lUF+-10% 35VDC TA
CAPACITOR-FXD .lUF +-lo% 50VDC CER

28480
56289
28480
56289
28480

0160-4835
150D225X9020A2
0160-4835
150D105X9035A2
0160-4835

AlOA6C21
AlOA6C22
AlOA6C23
AlOA6C24
AlOAGCRl

1180-0197
1180-0197
1160-2437
1160-2437
1901-0033

B
8
1
1
2

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FDTHRU 5000PF +BO -20% 200V
CAPACITOR-FDTHRU 5000PF +80 -20% 200V
DIODE-GEN PRP 180V 200MA DO-7

56289
56289
28480
28480
28480

150D225X9020A2
1500225X9020A2
0160-2437
0160-2437
1901-0033

AlOA6CR2
AlOA6CR3
AlOA6CR4
AlOAGLl
AlOA6L2

1901-0376
1901-0376
1901-0033
9100-1651
9140-0144

6
6
2
2
C

1
1
1
1
1

DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 180V 200MA DO-7
INDUCTOR RF-CH-MLD 750UH +-5% .2DX.45LG
INDUCTOR RF-CH-MLD 4.7UH 10% .105DX.26LG

28480
28480
28480
28480
28480

1901-0376
1901-0376
1901-0033
9100-1651
9140-0144

AlOA6L3
AlOA6L4
AlOA6MP2
AlOA6MP3
AlOA6MP4

9140-0144
9140-0144
2190-0009
2200-0101
2580-0002

C
a
4
0
4

1
1
2
2
2

INDUCTOR RF-CH-MLD 4.7UH 10% .105DX.26LG
INDUCTOR RF-CH-MLD 4.7UH 10% .105DX.26LG
WASHER-LK INTL T NO. 8 .168-IN-IO
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM 8-32-THD .085-IN-THK

28480
28480
28480
00000
28480

9140-0144
9140-0144
2190-0009
ORDER BY DESCRIPTION
2580-0002

AlOA6MP5
AlOA6MP6
AlOA6MP7
AlOA6Ql
AlOA6Q2

3150-0013
35660-20057
36701-40001
1853-0281
1854-0477

4
1
9
9
7

1
1
2
1
1

WIRE, 22 AWG 1X22
CVR PC 2 PHSDETC
EXTRACTOR PC
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=SOOMW

92194
28480
28480
04713
04713

298
85660-20057
86701-40001
2N2907A
2N2222A

AlOA6Q3
AlOA6Q4
AlOA6Q5
AlOA6Q6
AlOA6Q7

1855-0386
L853-0322
1854-0557
1854-0404
1853-0281

9
9
4
0
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

04713
01275
01295
28480
04713

214392
2N2946A
2N2432A
1854-0404
2N2907A

lUF+-10% 35VDC TA
lUF+-10% 35VDC TA
.047UF +-20% 50VDC CER
.047UF +-20% 50VDC CER
.047UF +-20% 50VDC CER

J-FET 2N4392 N-CHAN D-MODE TO
PNP 2N2946A SI TO-46 PD=400MW
NPN 2N2432A SI TO-18 PD900MW
NPN SI TO-18 PD=360MW
PNP 2N2907A SI TO-18 PD=400MW

-

*Indicates factory-selected value

85660-60229 Parts List
Page 1 of 3

HP Part Number 85660-60229
AlOA6 PLL 2 Phase Detector
Reference
Designation

HP Part
Number

AlOA6Q8
AlOA6Q9
AlOA6QlO
AlOAGRl
Al OA6R2

1854-0404
1853-0007
1853-0007
0757-0280
0757-0317

Al OA6R3
AlOA6R4
AlOA6R5
AlOA6R6
AlOA6R7

C
c

w
-

(
7
i

Mfr
Code

Description

Mfr Part
Number

;

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1% .125W TF TC=O+-100

2848(
0471:
0471:
19701
19701

1854-0404
2N3251
2N3251
SFR25H
SFR25H

0757-0280
0757-0317
0698-0083
0698-3440
0757-0123

?
7
E
7
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
1.33K +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

Al OA6R8
AlOA6R9
AlOAGRlO
AlOAGRll
AlOA6R12

0698-0082
D757-0442
D698-3260
3757-0290
3757-0420

7
9
9
5
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

464 1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
4641: 1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R13
AlOA6R14
AlOA6R15
AlOA6R16
AlOA6R17

3698-0084
3757-0280
1757-0442
1757-0439
1757-0444

9
3
9
4
1

1
1
1
1
1

RESISTOR 2.15K 1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 6.81K +-1% .125W TF TC=O+-100
RESISTOR 12.1K +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R18
AlOA6R19
AlOA6R20
AlOA6R21
AlOA6R22

1698-0084
1757-0280
1698-3445
1698-3445
1757-0280

9
3
2
2
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R23
AlOA6R24
AlOA6R25
AlOA6R26
AlOA6R27

1757-0279
1698-3450
1757-0462
1757-0467
1698-3266

0
3
3
3
5

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
7ESISTOR

3.16K +-1% .125W TF TC=O+-100
42.2K 1% .125W F TC=O+-100
75K +-1% .125W TF TC=O+-100
121K +-1% .125W TF TC=O+-100
2371: 1% .125W TF TC=O+-100

19701
24546
19701
19701
19701

SFR25H
C4-l/8-TO-4222-F
SFR25H
SFR25H
SFR25H

AlOA6R28
AlOA6R29
AlOA6R30
AlOA6R31
AlOA6R32

1698-3460
1757-0438
1698-0084
J698-3154
3757-0438

1
3
3
3
3

1
1
1
1
1

iESISTOR
?ESISTOR
?ESISTOR
.7ESISTOR
RESISTOR

4221: 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R33
AlOA6R34
AlOA6R35
AlOA6R36
AlOAGTPl

3698-0085
3698-3445
3757-0346
1757-0440
1251-0600

0
2
2
7
0

1
1
1
1
1

RESISTOR 2.61K 1% .125W TF TC=O+-100
RESISTOR 348 1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 7.5K 1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ

19701
19701
91637
24546
27264

SFR25H
SFR25H
CMF-55-1, T-l
C4-l/8-TO-7501-F
16-06-0034

AlOA6TP2
AlOA6TP3
AlOA6TP4
AlOA6TP5
AlOAGUl

1251-0600
1251-0600
1251-0600
1251-0600
.826-0026

0
0
0
0
3

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
IC COMPARATOR

27264
27264
27264
27264
27014

16-06-0034
16-06-0034
16-06-0034
16-06-0034
LM3llH

AlOA6U2
AlOA6U3

.826-0459
.B26-0059

6
2

1
1

IC OP AMP 14-DIP-C PKG
IC OP AMP GP TO-99 PKG

27014
27014

LH0042CO
LMEOlAH

8X60-60229 Parts List
Page 2 of 3

CONT
CONT
CONT
CONT
PRCN

PIN 1.14~MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14~MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
TO-99 PKG

*Indicates factory-selected value

SQ
SQ
SQ
SQ
SQ

HP Part Number 85660-60229
AlOA6 PLL 2 Phase Detector
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

AlOA6U4
AlOA6U5
AlOA6U6

1826-0059
1820-0429
1820-1212

2
8
9

1
1
1

IC OP AMP GP TO-99 PKG
IC V RGLTR-FXO-POS 4.8/5.2V TO-39 PKG
IC FF TTL LS J-K NEG-EDGE-TRIG PRESET/CL

27014
27014
01295

LM201AH
LM309H
SN74LS112AN

AlOA6U7
AlOA6U8
AlOA6U9
AlOAGUlO
AlOA6VR2

1820-1425
1820-1194
1820-1194
1826-0448
1902-0041

6
6
6
3
4

1
1
1
1
1

IC SCHMITT-TRIG TTL LS NAND QUAD L-INP
IC CNTR LS
TTL BIN
UP/DOWN
SYNCHRO
POS-E
IC CNTR LS
TTL BIN
UP/DOWN
SYNCHRO
POS-E
O/A lo-BIT 16-PLASTIC CMOS
DIODE-ZNR 5.11V 5% DO-35 PO=.4W

01295
01295
01295
24355
04713

SN74LS132N
SN74LS193N
SN74LS193N
AO7533LN(SEL)

AlOA6VR3
AlOA6VR4

1902-0041
1902-3002

4
3

1
1

DIODE-ZNR 5.11V 5% DO-35 PO=.4W
DIODE-ZNR 2.37V 5% DO-7 PO=.4W TC=-.074%

04713
04713

*Indicates factoy-selected value

85660-60229 Parts List
Page 3 of 3

HP Part Number 85660-60254
AlOA6 PLL 2 Phase Detector
Reference
Designatior 1

HP Part
Number

at

AlOA6

t35660-60254

1

BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLLZ,
PHASE DETECTOR (SERIAL PREFIXES:
2511A-2613A)

2848t

85660-60254

AlOAGCl
AlOA6C2
AlOA6C3
AlOA6C4
AlOA6C5

(1180-0197
c1160-0574
c1160-4832
C1160-4892
C1160-4892

,

1
1
1
1
1

CAPACITOR-FXO 2.2UF+-10% 20VOC TA
CAPACITOR-FXO .022UF +-20% 1OOVOC CER
CAPACITOR-FXO .OlUF +-lo% 1OOVOC CER
CAPACITOR-FXO 1UF +-20% 25VOC CER
CAPACITOR-FXO 1UF +-20% 25VOC CER

56288
2848C
2848C
2848C
28480

1500225X9020A2
0160-0574
0160-4832
0160-4892
0160-4892

AlOA6C6
AlOA6C7
AlOA6C8
AlOA6C9
AlOAGClO

C1160-2199
C1160-5609
C1160-4835
a1160-0573
a1160-2199

,
I

1
1
1
1
1

CAPACITOR-FXO 30PF +-5% 300VOC MICA
CAPACITOR-FXO 1OUF +-lo% 50VOC MET-POLYC
CAPACITOR-FXO .lUF +-lo% SOVOC CER
CAPACITOR-FXO 4700PF +-20% 1OOVOC CER
CAPACITOR-FXO 30PF +-5% 300VOC MICA

28480
28480
28480
28480
28480

0160-2199
0160-5609
0160-4835
0160-0573
0160-2199

AlOAGCll
AlOA6C12
AlOA6C13
AlOA6C14
AlOA6C15

01180-0291
01180-0291
01160-0575
0‘160-0575
0 160-0575

1
1
1
1
1

CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO

56289
56289
28480
28480
28480

1500105X9035A2
1500105X9035A2
0160-0575
0160-0575
0160-0575

AlOA6C16
AlOA6C17
AlOA6C18
AlOA6C19
AlOA6C20

0 160-4835
0 180-0197
0 160-4835
0 180-0291
0 160-4835

i
E
i
?

1
1
1
1
1

CAPACITOR-FXO .lUF +-lo% 50VOC CER
CAPACITOR-FXO 2.2UF+-10% 20VOC TA
CAPACITOR-FXO .lUF +-10x SOVOC CER
CAPACITOR-FXO lUF+-10% 35VOC TA
CAPACITOR-FXO .lUF +-lo% 50VOC CER

28480
56289
28480
56289
28480

0160-4835
1500225X9020A2
0160-4835
1500105X9035A2
0160-4835

AlOA6C21
AlOA6C22
AlOA6C23
AlOA6C24
AlOAGCRl

0 180-0197
0 180-0197
0 160-2437
0 160-2437
1'901-0033

t
P

1
1
1
1
1

CAPACITOR-FXO 2.2UF+-10% 20VOC TA
CAPACITOR-FXO 2.2UF+-10% 20VOC TA
CAPACITOR-FOTHRU 5000PF +80 -20% 200V
CAPACITOR-FOTHRU 5000PF +80 -20% 200V
DIODE-GEN PRP 180V 200MA DO-7

56289
56289
28480
28480
28480

1500225X9020A2
1500225X9020A2
0160-2437
0160-2437
1901-0033

AlOA6CR2
AlOA6CR3
AlOA6CR4
AlOA6CR5
AlOAGLl
AlOA6L2

I!901-0376
I!901-0376
I!901-0033
l!901-0050
9 loo-1651
9 140-0144

5

1
1
1
1
1
1

DIODE-GEN PRP 35V 50MA 00-35
DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 1BOV 200MA DO-7
IIOOE-SWITCHING 80V 200MA 2NS DO-35
INDUCTOR RF-CH-ML0 750UH +-5% .2OX.45LG
INDUCTOR RF-CH-ML0 4.7UH 10% .105OX.26LG

28480
28480
28480
28480
28480
28480

1901-0376
1901-0376
1901-0033
1901-0050
9100-1651
9140-0144

AlOA6L3
AlOA6L4
AlOA6MP2
AlOA6MP3
AlOA6MP4

140-0144
140-0144
190-0009
zoo-0101
580-0002

I

1
1
2
2
2

LNOUCTOR RF-CH-ML0 4.7UH 10% .105OX.26LG
LNOUCTOR RF-CH-ML0 4.7UH 10% .105OX.26LG
JASHER-LK INTL T NO. 8 .168-IN-IO
iCREW-MACH 4-40 .188-IN-LG PAN-HO-POZI
IUT-HEX-OBL-CHAM 8-32-THO .085-IN-THK

28480
28480
28480
00000
28480

9140-0144
9140-0144
2190-0009
ORDER BY DESCRIPTION
2580-0002

AlOA6MP5
AlOA6MP6
AlOA6MP7
AlOA6Ql
AlOA6Q2

8:150-0013
8!5660-20057
81j701-40001
11353-0281
II354-0477

I

1
1
2
1
1

/IRE, 22 AWG 1X22
:VR PC 2 PHSOETC
:XTRACTOR PC
rRANSISTOR PNP 2N2907A SI TO-18 PO=400MW
[RANSISTOR NPN 2N2222A SI TO-18 PO=500MW

92194
28480
28480
04713
04713

298
85660-20057
86701-40001
2N2907A
2N2222A

AlOA6Q3
AlOA6Q4
AlOA6Q5
AlOA6Q6

1t355-0386
lf353-0322
1t354-0477
1’854-0404

I

1
1
1
1

'RANSISTOR
'RANSISTOR
'RANSISTOR
iRANSISTOR

04713
01275
04713
28480

2N4392
2N2946A
2N2222A
1854-0404

/
I
I
:
:
1
1
1

I

1
1
7

5
7
3
?
I

I
I
1
I

;
I
I

I

Description

lUF+-10% 35VOC TA
lUF+-10% 35VOC TA
.047UF +-20% 50VOC CER
.047UF +-20% 50VOC CER
.047UF +-20X 50VOC CER

J-FET 2N4392 N-CHAN O-MODE TO
PNP 2N2946A SI TO-46 PO=400MW
NPN 2N2222A SI TO-18 PO=500MW
NPN SI TO-18 PO=360MW

*Indicates factoryselected value

Mfr
Code

Mfr Part
Number

85660-60254 Parts List
Page 1 of 3

HP Part Number 85660-60254
AlOA6 PLL 2 Phase Detector
Reference
Designatior

HP Part
Number

:
t

M

Description

Mfr
Code

Mfr Part
Number

AlOA6Q7

1853-0281

t

1

TRANSISTOR PNP 2N2907A SI TO-18 PO=400M\I

04713

2N2907A

Al OA6Q8
AlOA6Q9
AlOAGQlO
AlOAGRl
AlOA6R2

1854-0404
1853-0007
1853-0007
0757-0280
0757-0317

I
1
:
;

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW
TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1% .125W TF TC=O+-100

28480
04713
04713
19701
19701

1854-0404
2N3251
2N3251
SFR25H
SFR25H

Al OA6R3
AlOA6R4
Al OA6R5
AlOA6R6
AlOA6R7

0757-0280
0757-0317
0698-0083
0698-3440
0757-0123

:
i
E
i
?

1
1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1X .125W TF TC=O+-100
RESISTOR 1.96K 1% .125W TF TC=O+-100
RESISTOR 196 1% .125W TF TC=O+-100
RESISTOR 34.8K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R8
AlOA6R9
AlOAGRlO
AlOAGRll
AlOA6R12

0698-0082
0757-0442
0698-3260
D757-0290
0757-0420

7
3
3
c
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
tESISTOR
7ESISTOR

464 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
464K 1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R13
AlOA6R14
AlOA6R15
AlOA6R16
AlOA6R17

0698-0084
3757-0280
3757-0442
3757-0439
3757-0444

3
3
3
I
1

1
1
1
1
1

1ESISTOR
7ESISTOR
7ESISTOR
tESISTOR
tESISTOR

2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
6.81K +-1% .125W TF TC=O+-100
12.1K +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R18
AlOA6R19
AlOA6R20
AlOA6R21
AlOA6R22

1698-0084
1757-0280
1698-3445
1698-3445
1757-0280

3
1
,
,

1
1
1
1
1

tESISTOR
tESISTOR
{ESISTOR
[ESISTOR
lESISTOR

2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R23
AlOA6R24
AlOA6R25
AlOA6R26
AlOA6R27

0757-0279
0698-3450
0757-0462
0757-0467
0698-3266

1
1
1
1

1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.16K +-1X .125W TF TC=O+-100
42.2K 1% .125W F TC=O+-100
75K +-1% .125W TF TC=O+-100
121K +-1% .125W TF TC=O+-100
237K 1% .125W TF TC=O+-100

19701
24546
19701
19701
19701

SFR25H
C4-l/8-TO-4222-F
SFR25H
SFR25H
SFR25H

AlOA6R28
AlOA6R29
AlOA6R30
AlOA6R31
AlOA6R32

0698-3460
0757-0438
0698-0084
0698-3154
3757-0438

1
1
1
1
1

RESISTOR
RESISTOR
iESISTOR
?ESISTOR
iESISTOR

422K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R33
AlOA6R34
AlOA6R35
AlOA6R36
AlOAGTPl

3698-0085
3698-3445
3757-0346
3757-0440
1251-0600

1
1
1
1
1

7ESISTOR 2.61K 1% .125W TF TC=O+-100
1ESISTOR 348 1% .125W TF TC=O+-100
tESISTOR 10 +-1% .125W TF TC=O+-100
IESISTOR 7.5K 1% .125W TF TC=O+-100
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
91637
24546
27264

SFR25H
SFR25H
CMF-55-1, T-l
C4-l/8-TO-7501-F
16-06-0034

AlOA6TP2
AlOA6TP3
AlOA6TP4
AlOA6TP5
AlOAGUl

1251-0600
1251-0600
1251-0600
1251-0600
1826-0026

1
1
1
1
1

:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
[C COMPARATOR

27264
27264
27264
27264
27014

16-06-0034
16-06-0034
16-06-0034
16-06-0034
LM3llH

AlOA6U2

1826-0459

1

[C OP AMP 14-DIP-C PKG

27014

LH0042CO

I

CONT
CONT
CONT
CONT
PRCN

PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
PIN 1.14-MM-BSC-SZ
TO-99 PKG

-

8566060254 Parts List
Page2of3

*Indicates factory-selected value

SQ
SQ
SQ
SQ

HP Part Number 85660-60254
AlOA6 PLL 2 Phase Detector
Reference
Designation

HP Part
Number

c
c

Description

3tl
-

Mfr
Code

Mfr Part
Number

AlOA6U3
AlOA6U4
AlOA6U5
AlOA6U6

1826-0059
1826-0059
1820-0429
1820-1212

i
i
t
E

1
1
1
1

IC
IC
IC
IC

OP AMP GP TO-99 PKG
OP AMP GP TO-99 PKG
V RGLTR-FXO-POS 4.8/5.2V TO-39 PKG
FF TTL LS J-K NEG-EDGE-TRIG PRESET/CL

27014
27014
27014
01295

LMEOlAH
LMZOlAH
LM309H
SN74LS112AN

AlOA6U7
AlOA6U8
AlOA6U9
AlOAGUlO
AlOA6VR2

.B20-1425
.820-1194
.820-1194
.826-0448
.902-0041

E
E
E
3
4

1
1
1
1
1

IC SCHMITT-TRIG TTL LS NAND QUAD E-INP
IC CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
IC CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
O/A lo-BIT 16-PLASTIC CMOS
DIODE-ZNR 5.11V 5% DO-35 PO=.4W

01295
01295
01295
24355
04713

SN74LS132N
SN74LS193N
SN74LS193N
AO7533LN(SEL)

AlOA6VR3
AlOA6VR4

902-0041
902-3002

4
3

1
1

DIODE-ZNR 5.11V 5% DO-35 PO=.4W
JIOOE-ZNR 2.37V 5% DO-7 PO=.4W TC=-.074%

04713
04713

-

*Indicates factory-selected value

85660-60254 Parts List
Page 3 of 3

HP Part Number 85660-60276
AlOA6 PLL 2 Phase Detector
HP Pati
Number

at]
-

AlOA6

85660-60276

1

BOARD ASSEMBLY, PLLL PHASE DETECTOR
(SERIAL PREFIX: 2618~)

2848C

85660-60276

AlOAGCl
AlOA6C2
AlOA6C3
AlOA6C4
AlOA6C5

0180-0197
0160-0574
0160-4832
0160-4892
0160-4892

1
1
1
1
1

CAPACITOR-FXO 2.2UF+-10% ZOVOC TA
CAPACITOR-FXO .022UF +-20% 1OOVOC CER
CAPACITOR-FXO .OlUF +-lo% 1OOVOC CER
CAP-FXO 1uF 25 V
CAP-FXO 1uF 25 V

56289
04222
04222
56289
56289

1500225X9020A2-OYS
SR201C223MAAH
SAlOlC103KAAH
2C37Z5U105M025C
2C37Z5U105M025C

AlOA6C6
AlOA6C7
AlOA6C8
AlOA6C9
AlOAGClO

0160-2199
0160-5609
0160-4835
0160-0573
0160-2199

1
1
1
1
1

CAPACITOR-FXO 30PF +-5% 300VOC MICA
CAPACITOR-FXO 1OUF +-lo% 50VOC MET-POLYC
CAPACITOR-FXO .lUF +-lo% SOVOC CER
CAPACITOR-FXO 4700PF +-20% 1OOVOC CER
CAPACITOR-FXO 30PF +-5% 300VOC MICA

09023
84411
04222
04222
09023

CO15EO300J03
HEW-687
SA115C104KAAH
SR201C472MAAH
CO15E0300J03

AlOAGCll
AlOA6C12
AlOA6C14
AlOA6C15
AlOA6C16

0180-0291
0180-0291
0160-0575
0160-0575
0160-4835

1
1
1
1
1

CAPACITOR-FXO lUF+-10% 35VOC TA
CAPACITOR-FXO lUF+-10% 35VOC TA
CAP-FXO 0.047uF 50 V CER
CAP-FXO 0.047uF 50 V CER
CAPACITOR-FXO .lUF +-lo% 50VOC CER

56289
56289
04222
04222
04222

1500105X9035A2-OYS
1500105X9035A2-OYS
SR205C473MAAH
SR205C473MAAH
SA115C104KAAH

AlOA6C17
AlOA6C18
AlOA6C19
AlOA6C20
AlOA6C21

0180-0197
0160-4835
0180-0291
0160-4835
0180-0197

1
1
1
1
1

CAPACITOR-FXO 2.2UF+-10% LOVOC TA
CAPACITOR-FXO .lUF +-lo% 50VOC CER
CAPACITOR-FXO lUF+-10% 35VOC TA
CAPACITOR-FXO .lUF +-lo% 50VOC CER
CAPACITOR-FXO 2.2UF+-10% POVOC TA

56289
04222
56289
04222
56289

1500225X9020A2-OYS
SA115C104KAAH
1500105X9035A2-OYS
SA115C104KAAH
1500225X9020A2-OYS

AlOA6C22
AlOA6C23
AlOA6C24
AlOAGCRl
AlOA6CR2

0180-0197
0160-2437
0160-2437
1901-0033
1901-0376

E
1
1
2
E

1
1
1
1
1

CAPACITOR-FXO 2.2UF+-10% 20VOC TA
CAPACITOR-FOTHRU 5000PF +80 -20% 200V
CAPACITOR-FOTHRU 5000PF +80 -20% 200V
DIODE-GEN PRP 180V 200MA DO-35
DIODE-GEN PRP 35V 50MA DO-35

56289
33095
33095
9N171
9N171

1500225X9020A2-OYS
54-713-033-X5V-5022
54-713-033-X5V-5022
lN645
lN3595

AlOA6CR3
AlOA6CR4
AlOA6CR5
AlOAGLl
AlOA6L2

1901-0376
1901-0033
1901-0050
9100-1651
3140-0144

E
2
3
2
3

1
1
1
1
1

DIODE-GEN PRP 35V 50MA DO-35
DIODE-GEN PRP 180V 200MA DO-35
DIODE-SWITCHING BOV 200MA 2NS DO-35
INDUCTOR RF-CH-ML0 750UH +-5% .20INDUCTOR RF-CH-ML0 4.7UH +-lo% .1050-

9N171
9N171
9N171
99800
99800

lN3595
lN645
lN4150
2500-22
1025-36

AlOA6L3
AlOA6L4
AlOAGMPl
AlOA6MP2
Al OA6MP3

3140-0144
3140-0144

3
3

1
1

99800
99800

1025-36
1025-36

2190-0009
2200-0101

1
3

2
2

INDUCTOR RF-CH-ML0 4.7UH +-10X .1050INDUCTOR RF-CH-ML0 4.7UH +-10X .1050YOT ASSIGNED
dASHER-LK INTL T NO. 8 .168-IN-IO
SCREW-MACH 4-40 .188-IN-LG PAN-HO-POZI

06791
77250

820-BC

AlOA6MP4
AlOA6MP5
AlOA6MP6
AlOA6MP7
AlOAGQl

2580-0002
3151-0013
35660-20057
36701-40001
1853-0281

$
1
1
3
3

2
2
1
2
1

VUT-HEX-OBL-CHAM 8-32-THO .085-IN-THK
JIRE 22AWG 1X22
:OVER PC, PLL2 PHASE DETECTOR
EXTRACTOR, PC
TRANSISTOR PNP 2N2907A SI TO-18 PO=400MW

80120
92194
28480
28480
04713

AlOA6Q2
Al OA6Q3
AlOA6Q4
AlOA6Q5
AlOA6Q6

1854-0477
1855-0386
1853-0322
1854-0477
1854-0404

1
3
3
I
1

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

04713
04713
04713
04713
04713

Reference
Designatior

I

1
I
/
i
‘

Description

NPN 2N2222A SI TO-18 PO=500MW
J-FET 2N4392 N-CHAN O-MODE TO
PNP 2N2946A SI TO-46 PO=400MW
NPN 2N2222A SI TO-18 PO=500MW
NPN SI TO-18 PO=360MW

Mfr
Code

Mfr Part
Number

298
85660-20057
86701-40001
2N2907A
2N2222A
2N4392
2N2222A

-

*Indicates factoryselected value

85660-60276 Parts List
Page 1 of 3

HP Part Number 85660-60276
AlOA6 PLL 2 Phase Detector
Reference
Designatior

HP Part
Number

AlOA6Q7
AlOA6Q8
AlOA6Q9
AlOA6QlO
AlOAGQll

1853-0281
1854-0404
1853-0007
1853-0007
1853-0281

AlOAGRl
AlOA6R2
AlOA6R3
AlOA6R4
AlOA6R5

0757-0280
0757-0317
0757-0280
0757-0317
0698-0083

AlOA6R6
AlOA6R7
AlOA6R8
AlOA6R9
AlOAGRlO

0698-3440
0757-0123
0698-0082
0757-0442
0698-3260

AlOAGRll
AlOA6R12
AlOA6R13
AlOA6R14
AlOA6R15

0757-0290
0757-0420
0698-0084
0757-0280
0757-0442

AlOA6R16
AlOA6R17
AlOA6R18
AlOA6R19
AlOA6R20

C
c

It

Description

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

:
1
:
;
t

1
1
1
1
1

i

PNP
NPN
PNP
PNP
PNP

2N2907A SI TO-18 PD=4OOM'
SI TO-18 PD=360MW
2N3251 SI TO-18 PD=360MW
2N3251 SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400Ml

Mfr
Code

Mfr Part
Number

0471:
0471:
0471:
0471:
0471:

2N3251
2N3251
2N2907A

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1.33K +-1X .125W TF TC=O+-100
RESISTOR 1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196 1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
464 1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100
464K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

6.19K +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

0757-0439
D757-0444
3698-0084
3757-0280
3698-3445

4
1
9
3
2

1
1
1
1
1

7ESISTOR
?ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR

6.81K +-1% .125W TF TC=O+-100
12.1K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R21
AlOA6R22
AlOA6R23
AlOA6R24
AlOA6R25

3698-3445
3757-0280
3757-0279
3757-0442
3757-0462

2
3
0
9
3

1
1
1
1
1

tESISTOR
IESISTOR
IESISTOR
ZESISTOR
ZESISTOR

348 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
3.16K +-I% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
75K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R26
AlOA6R27
AlOA6R28
AlOA6R29
AlOA6R30

1757-0467
1698-3266
1698-3460
1757-0438
1698-0084

8
5
1
3
9

1
1
1
1
1

tESISTOR
tESISTOR
lESISTOR
lESISTOR
lESISTOR

121K +-1X .125W TF TC=O+-100
2371: 1% .125W TF TC=O+-100
422K 1% .125W TF TC=O+-100
5.11K +-I% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA6R31
AlOA6R32
AlOA6R33
AlOA6R34
AlOA6R35

1698-3154
1757-0438
1698-0085
1698-3445
1757-0346

0
3
0
2
2

1
1
1
1
1

lESISTOR
LESISTOR
IESISTOR
LESISTOR
!ESISTOR

4.22K 1% .125W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100
2.61K 1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
91637

SFR25H
SFR25H
SFR25H
SFR25H
CMF-55-1, T-l

AlOA6R36
AlOAGTPl
AlOA6TP2
AlOA6TP3
AlOA6TP4

)757-0274
.251-0600
.251-0600
.251-0600
.251-0600

5
3
3
3
3

1
1
1
1
1

!ESISTOR 1.21K +-1% .125W TF TC=O+-100
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
27264
27264
27264
27264

SFR25H
16-06-0034
16-06-0034
16-06-0034
16-06-0034

AlOA6TP5
AlOAGUl
AlOA6U2

251-0600
826-0026
826-0459

3
3
5

1
1
1

:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
C COMPARATOR PRCN TO-99 PKG
C OP AMP 14-DIP-C PKG

27264
27014
27014

16-06-0034
LM311H
LH0042CD

85660-60276 Parts List
Page 2 of 3

:
7
C
C
e
3
9
3

*Indicates factory-selected value

2N2907A

HP Part Number 85660-60276
AlOA6 PLL 2 Phase Detector

Reference
Designation

HP Part
Number

Description

31
-

Mfr
Code

Mfr Part
Number

AlOA6U3
AlOA6U4

1826-0059
1826-0059

2
2

1
1

IC OP AMP GP TO-99 PKG
IC OP AMP GP TO-99 PKG

27014
27014

LM201AH
LMLOIAH

AlOA6U5
AlOA6U6
AlOA6U7
AlOA6U8
AlOA6U9

1820-0429
1820-1212
1820-1425
1820-1194
1820-1194

8
9
6
6
6

1
1
1
1
1

IC
IC
IC
IC
IC

V RGLTR-FXD-POS 4.8/5.2V TO-39 PKG
FF TTL LS J-K NEG-EDGE-TRIG PRESET/CL
SCHMITT-TRIG TTL LS NAND QUAD 2-INP
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E

27014
01295
01295
01295
01295

LM309H
SN74LS112AN
SN74LS132N
SN74LS193N
SN74LS193N

AlOAGUlO
AlOA6VR2
AlOA6VR3
AlOA6VR4

1826-0448
1902-0041
1902-0041
1902-3002

3
4
4
3

1
1
1
1

D/A lo-BIT 16-PLASTIC CMOS
DIODE-ZNR 5.11V 5% DO-35 PD=.4W
DIODE-ZNR 5.11V 5% DO-35 PD=.4W
DIODE-ZNR 2.37V 5% DO-7 PD=.4W TC=-.074%

24355
04713
04713
04713

AD7533LN(SEL)

-

*Indicates factory-selected value

85660-60276 Parts List
Page 3 of 3

HULZ

fl D E T O U T

c3
u 4

“7 rm
4 @@iQ Q,J; m,&,mig@
“6 1
:I
UE

5

::i@~[

u9

g

I
IL3
I

I;:L
UIO
:
I nLr

Ic8m

+ +
r. 0) ;;c:
+
ull

)onnnnocscocooon~
1
16

Pl

15
30

AlOA6 PLL2 Phase Detector Component Locations, 85660-60130, 85660-60229

HULZ

g D E T O U T

Ic9
m
u 4

0
77

U6

lli r:I
U7

U6

u9

Ic8
c:
LL
n
UIO
::
a
1 0

m

Cl6
Cl8
c20
E

16

l

+
r. m
;;
+
UI

;01+

30

AlOA6 PLL2 Phase Detector Component Locations, 85660-60254

HULZ

$8 D E T O U T

4
Jk

5
jc,

[-I-j[
@$Yj
TP5
+ +
zU”cc
-:,

Cl6clc20* pT--IL2
q
(L3
I
)ooonnnnnnonnnnn~
n
e

1
16

2:

(J!j
0

PI

-

2n

(,,1,]

hq
0;;z++) +-

15
30

AlOA8 PLL2 Phase Detector Component Locations, 85660-60276

AlOA7

AlOA7 Phase Lock Loop 2 (PLL2) Divider, Circuit Description
Reference Divider @
A 10 MHz signal derived from the quartz crystal reference is amplified by Q2 and used to
drive divider U4. The divide by 10 output of U4 drives U16, whose divide by 2 output goes
to the AlOA6 PLL2 Phase Detector. This 500 kHz signal is used as a reference to which
the programmable divide output of the PLL2 Divider is compared. The TTL input on Pl-2
disables the reference divider during sweeps.

Prescaler GJ
The -18 dBm, 75 to 150 MHz input from AlOA5 PLL2 VCO, is amplified by Ql and used to
drive prescaler UlA which is a variable-module divider. It divides by 10 if pin 9, “PSW” is
high; it divides by 11 if pin 9 is low. UlB is an ECL circuit which contains an ECL to TTL
translator. Pin 7 is the TTL output, which drives gate U9C. U9C is used as a buffer to drive
the multiple of loads on its output; the “CLK” line.
The prescaler should be thought of as a ~10 with the ability to “swallow” input pulses. If
the PSW line is low, in effect one input pulse is lost (swallowed) for each output (CL10 pulse
produced.

Latches @
U12, U13, and U14 are latches which store the divider programming number. The number is
clocked into the latches with LCKl and LCK2. U14 also latches in SW1 and SW2, which are
sent to AlOA5 PLL2 VCO and AlOAl PLLl VCO.

Direct Divide @
U8 and U15 are cascaded dividers whose state outputs are sensed by U9B. The CLK line
from the prescaler clocks U8. When the count reaches 25, the output of U9B goes high. This
initiates a divide sequence by J-K flip-flops UlOA and UlOB, which are clocked by CLK. The
Q output of UlOA goes high on a count of 27 and low on 29. This signal is output to the
AlOA6 PLL2 Phase Detector. The Q output of UlOA goes low on a count of 27, resetting U8
and U15. When it returns high on 29, the sequence resumes.
U15 is preset to a count of zero and U8 to a count of 0 to 9 depending on input data. Thus, if
U8 is preset to 0, the circuit divides by 29. If preset to 9, the circuit divides by 20.
Since the prescaler has already divided by 10, the 75 to 150 MHz input is divided by numbers
200, 210, . . . 290 according to the BCD digit programming U8. Since the output is locked
to 500 kHz by the phase lock loop, the VCO is programmed from 100 to 145 MHz in 5 MHz
steps.
AlOA7 1

Synchronizer 0
Other divide numbers are provided through the pulse swallowing technique. The output
frequency is held by the lock loop to 500 kHz. If N input pulses per second are swallowed,
the input frequency must rise by N Hz to keep the output constant. If N input pulses are
swallowed for each output pulse, input frequency must rise by N x 500 kHz.
The pulse swallow synchronizer accepts pulses from the fractional counter and integer counter,
and at the proper time, as determined by the CLK line, drops the PSW line to swallow input
pulses.

Integer Counter @
U7 is a presettable counter which is preset to an externally programmable count by the RST
line. RST pulses come from the direct divide output, and occur at a 500 kHz rate. After
each RST pulse, U7 counts CLK pulses until a count of 9 is reached. A count of 9 causes the
output of U9A to go high. The pulse swallow synchronizer drops the PSW line on CLK pulse
after the RST pulse, and raises it two CLK pulses after U9A goes high. PSW therefore is low
one CLK pulse longer than the count time. If U7 is preset to N, (9-N) + 1 input pulses will
be swallowed for each CLK pulse, forcing the input frequency to rise by (10-N) x 500 kHz.

Fractional Counter @
U5 and U6 are rate multipliers. They provide the function FOUT = FIN x N/100 where N is a
two digit BCD number (8 bits). The least significant digit goes to U5, the other to U6. The
output comes from U5 and triggers a 1.6 ps pulse from one-shot multivibrator Ull.
The input frequency to the rate multipliers is 500 kHz, so FOUT = N x 5 kHz.
The output from Ull goes to U2A. A high input at U2A causes the synchronizer to swallow
one less pulse per RST pulse than it would have other wise. The fractional counter therefore
causes the input frequency to drop by N x 5 kHz, where N ranges from 0 to 99.

2 AlQA7

HP Part Number 85660-60028
AlOA7 PLL 2 Divider

HP Part
Number

c
c

AlOA7

I35660-60028

(

1

BOARD ASSEMBLY, PLL 2 DIVIDER

28480

85660-60028

AlOA7Cl
AlOA7C2
AlOA7C3
AlOA7C4
AlOA7C5

(1160-3877
(1160-3879
(1160-4084
(1160-3877
(1160-4084

t
i
E
c
i

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD O.luF
CAPACITOR-FXD
CAP-FXD O.luF

1OOPF +-20% 200VDC CER
.OlUF +-20% 1OOVDC CER
50 V
1OOPF +-20% EOOVDC CER
50 V

04222
04222
56289
04222
56289

SR202ClOlMAAH
SR201C103MAAH
lC20X7R104M0508
SR202ClOlMAAH
lC20X7R104M050B

AlOA7C6
AlOA7C7
AlOA7C8
AlOA7C9
AlOA7ClO

(1160-4084
(1160-4084
(1160-3879
(1160-4084
t1160-4084

E
E
7
E
E

1
1
1
1
1

CAP-FXD O.luF
CAP-FXD O.luF
CAPACITOR-FXD
CAP-FXD O.luF
CAP-FXD O.luF

50 V
50 V
.OlUF +-20% 1OOVDC CER
50 V
50 V

56289
56289
04222
56289
56289

lC20X7R104M050B
lC20X7R104M050B
SR201C103MAAH
lC20X7R104M050B
lC20X7R104M050B

AlOA7Cll
AlOA7C12
AlOA7C13
AlOA7C14
AlOA7C15

c1160-4084
c1160-4084
c1160-4084
c1160-0570
c1160-4084

a
a
a
9
a

1
1
1
1
1

CAP-FXD O.luF
CAP-FXD O.luF
CAP-FXD O.luF
CAPACITOR-FXD
CAP-FXD O.luF

50 V
50 V
50 V
220PF +-20% 1OOVDC CER
50 V

56289
56289
56289
04222
56289

lC20X7R104M050B
lC20X7R104M050B
lC20X7R104M050B
SR201C221MAAH
lC20X7R104M050B

AlOA7C16
AlOA7C17
AlOA7C18
AlOA7C19
AlOA7CRl

C1160-4084
C1160-4084
C1180-1746
C1180-1746
1.901-0743

a
a
5
5
1

1
1
1
1
1

CAP-FXD O.luF 50 V
CAP-FXD O.luF 50 V
CAPACITOR-FXD 15UF+-10% ZOVDC TA
CAPACITOR-FXD 15UF+-10% LOVDC TA
DIODE-PWR RECT IN4004 400V 1A DO-41

56289
56289
56289
56289
71744

lC20X7R104M050B
lC20X7R104M050B
150D156X9020B2-DYS
150D156X9020B2-DYS
lN4004

AlOA7CR2
AlOA7J2
AlOA7Ll
AlOA7L2
AlOA7L3

1 901-0743
1 250-0544
91100-2250
91100-1788
91100-1618

1
9
9
6
1

1
1
1
1
1

3IODE-PWR RECT lN4004 400V 1A DO-41
ZONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 180NH +-lo% .lOSD-INX
,ORE-FERRITE CHOKE-WIDEBAND IMP:680
INDUCTOR RF-CH-MLD 5.6UH +-lo% .166D-INX

71744
98291
24226
02114
99800

AlOA7L4
AlOA7MPl
AlOA7MP2
AlOA7MP3
AlOA7MP4

91100-1618

1

1

99800

1537-30

2‘190-0124
2‘200-0101
2‘950-0078

4
0
9

1
2
1

INDUCTOR RF-CH-ML0 5.6UH +-lo% .166D-INX
YOT ASSIGNED
-0CK WASHER .195 IO
SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI
YUT-HEX-OBL-CHAM lo-32-THD .067-IN-THK

28480
77250
74163

2190-0124

AlOA7MP5
AlOA7MP6
AlOA7MP7
AlOA7Ql
AlOA7Q2

8~151-0013
a15660-20058
8!6701-40001
1 854-0345
1 854-0019

4
2
9
8
3

1
1
2
1
1

JIRE 22AWG 1X22
:OVER PC, PLL 2 DIVIDER
fXTRACTOR PC
TRANSISTOR NPN 2N5179 SI TO-72 PD=ZOOMW
TRANSISTOR NPN SI TO-18 PD=360MW

92194
28480
28480
04713
04713

298
85660-20058
86701-40001
2N5179

AlOA7Rl
AlOA7R2
AlOA7R3
AlOA7R4
AlOA7R5

0 1757-0276
0 1757-0279
0 1757-0280
0 1757-0395
0 1757-0401

7
0
3
1
0

1
1
1
1
1

1ESISTOR
tESISTOR
{ESISTOR
CESISTOR
ZESISTOR

61.9 +-1% .125W TF TC=O+-100
3.16K +-1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
56.2 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA7R6
AlOA7R7
AlOA7R8
AlOA7R9
AlOA7RlO

0 1757-0280
0 1698-3444
01698-3157
0 ‘757-0280
0 ‘757-0280

3
1
3
3
3

1
1
1
1
1

tESISTOR
IESISTOR
lESISTOR
{ESISTOR
[ESISTOR

1K +-1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA7Rll

0 757-0280

3

1

tESISTOR 1K +-1% .125W TF TC=O+-100

19701

SFR25H

Reference
Designation I

Description

31
-

Mfr Part
Number

Mfr
Code

lN4004
051-049-0000-220
lOM180K
VK200 20/4B
1537-30

500220

-

*Indicates factory-selected value

85660-60028 Parts List
Page 1 of 2

HP Part Number 85660-60028
AlOA7 PLL 2 Divider
Reference
Designation

HP Part C
Number D Qty

AlOA7R12
AlOA7R13
AlOA7R14
AlOA7TPl

0757-0280
0757-0280
0757-0442
1251-0600

3
3
9
0

1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR IK +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

AlOA7TP2
AlOA7TP3
AlOA7TP4
AlOA7TP5
AlOA7Ul

1251-0600
1251-0600
1251-0600
1251-0600
1820-1888

0
0
0
0
5

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
IC PRESCR ECL

AlOA7U2
AlOA7U3
AlOA7U4
AlOA7U5
AlOA7U6

1820-0681
1820-0629
1820-1251
1820-0909
1820-0909

4
0
6
9
9

1
1
1
1
1

AlOA7U7
AlOA7U8
AlOA7U9
AlOA7UlO
AlOA7Ull

1820-1251
1820-1251
1820-0686
1820-0629
1820-0261

6
6
9
0
6

AlOA7U12
AlOA7U13
AlOA7U14
AlOA7U15
AlOA7U16

1820-1196
1820-1196
1820-1196
1820-1251
1820-1251

AlOA7Wl

85660-60087

8566040028 Parts List
Page 2 of 2

Mfr
Code

Description

Mfr Part
Number

19701
19701
19701
27264

SFR25H
SFR25H
SFR25H
16-06-0034

SQ
SQ
SQ
SQ

27264
27264
27264
27264
04713

16-06-0034
16-06-0034
16-06-0034
16-06-0034
MC12013L

IC
IC
IC
IC
IC

GATE TTL S NAND QUAD 2-INP
FF TTL S J-K NEG-EDGE-TRIG PRESET/CLE
CNTR TTL LS DECD ASYNCHRO NEG-EDGE-TR
MULTR TTL
MULTR TTL

01295
01295
01295
01295
01295

SN74SOON
SN74S112N
SN74LS196N
SN74167N
SN74167N

1
1
1
1
1

IC
IC
IC
IC
IC

CNTR TTL LS OECD ASYNCHRO NEG-EDGE-TR
CNTR TTL LS DECD ASYNCHRO NEG-EDGE-TR
GATE TTL S AND TPL 3-INP
FF TTL S J-K NEG-EDGE-TRIG PRESET/CLE
MV TTL MONOSTBL

01295
01295
01295
01295
01295

SN74LS196N
SN74LS196N
SN74SllN
SN74S112N
SN74121N

8
8
8
6
6

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE
FF TTL LS D-TYPE
FF TTL LS D-TYPE
CNTR TTL LS DECD
CNTR TTL LS DECD

01295
01295
01295
01295
01295

SN74LS174N
SN74LS174N
SN74LS174N
SN74LS196N
SN74LS196N

1

1

CABLE ASSEMBLY, WHITE/BLUE
(INCLUDES ~1)

28480

85660-60087

CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN

1.14~MM-BSC-SZ
1.14~MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

SQ

POS-EDGE-TRIG COM CL
PDS-EDGE-TRIG COM CL
POS-EDGE-TRIG COM CL
ASYNCHRO NEG-EDGE-TR
ASYNCHRO NEG-EDGE-TR

*Indicates factory-selected value

Jl
75150 MHz

J2
10 MHz

(
d
me ;
&L

z
3

r-4
3

a,’

r
0
3

*
A
0

tn
;
0
+

+

z -=I
y
0 ;
%
ul
3

AlOA7 PLL2 Divider Component Locations, 85660-60028

AlOA8
AlOA8 Phase Lock Loop 2 (PLL2) Discriminator,
Circuit Description
The AlOA8 PLL2 Discriminator combines the error voltage information from the AlOA6
PLL2 Phase Detector, the attenuated scan information (SCAN DAC IN) from the Al6 Scan
Generator, and the tuning information from the Al2 Front-Panel Interface (via the Instrument
Bus) to produce a tuning current to tune the oscillator in the AlOA5 PLL2 VCO.

Pulse Generator @
AlOA5 PLL2 VCO provides an ECL level .15 to .30 MHz input which is amplified by Q6
and Q7. At the beginning of a cycle, both inputs of gate U7D are low. When Q7 collector
goes high, U7D output goes low, saturating Qll and causing resonator L4, C15, Cl6 to ring
at 5.2 MHz. This damped oscillation appears at Q9 collector, is clipped by &lo, and used to
drive counter U6. U6 is preset to a count of 6. When the count reaches 8, the (8) output of
U6 goes high. This is fed back to the other input of U7D, holding its output low after the
input from Q7 goes low. After 1.6 ps, the count reaches 16, (8) goes low again, U7D output
goes high, Qll is turned off, resulting in the resonance being damped by R17. At the count of
16, U7C and U7B reset the counter to 5. Before the oscillation is fully damped, the counter
gets clocked to 6. U7A prevents a latch-up condition by clearing the counter in the event that
the output of U7D remains low for a long period of time.

-7 V Reference Supply @
U13 biases reference diode VRl at 7.5 mA, and provides a low impedance source at -7.0 V
dza%

Current Source @
The -7 V source, via R6 and Q3A, provides current which develops a stable 7 V drop across
R7 and Q3B. This acts as the reference for a 3.2 mA current source comprised of U4 and Q4.
This current flows to ground through Q5A when the (8) output of U6 is low. If an input pulse
has triggered the pulse generator, the current is switched through Q5B for 1.6 ps. Q5B’s
collector current goes through a low-pass filter to the summing point of the discriminator loop.
The average value of this current is directly proportional to the input frequency, being 1.5 mA
at 300 kHz. The current to frequency ratio is adjustable *l% by the phase lock input on
PI-28.

AiOA8 1

Summing Amplifier @
U3 is a noninverting integrator which responds to the voltage at the loop summing point,
the junction of C22 and R43. The output of U3 is connected through R45 to the output
summing network, whose output tunes the AlOA5 PLL2 VCO. Non-zero voltages at the loop
summing point will therefore cause the VCO frequency to change, until the current from the
discriminator reaches a level which cancels the other input, returning the summing point
voltage to zero. In this way, the VCO frequency is forced to be exactly proportional to the net
current fed to the summing point.

Pretune @J
The pretune circuit tunes the discriminator loop approximately to the desired frequency. The
phase lock loop then applies small corrections to get the frequency exact. A lo-bit binary
word representing the pretune frequency is latched by U9 and U12. The data programs
DAC Ull, whose output goes to UlO. If the input is all zeros, the output of UlO is zero.
The pretune current is then that which flows through R40: -1.5 mA. This tunes the input
frequency to 300 kHz. A binary word representing decimal 1000 will result in +6.84 V at
UlO’s output, adding +0.5 mA to the summing point. The resulting -1.0 mA tunes the loop
to 200 kHz.

Scan Attenuator @
The attenuated scan ramp is fed to the loop summing point via the range resistors selected
by analog switches UlA and UlD. If UlD is closed, a +lO V ramp causes a 0.5 MHz span
(referred to the 15 to 30 MHz VCO output). UlA closed results in a 5 MHz span. UlB is
closed when UlA is, feeding a current to the summing point which compensates for drift and
nonlinearity in UlA.
U2A and U2B direct the scan ramp directly to the VCO. This “forward feed” helps
compensate for the rather slow response of the discriminator loop.
U2C and U2D perform a logic function: U2-10 HI, U2-15 LO for wide scans; U2-10 LO, U2-15
HI for narrow scans, and both HI for scan disabled.

Output Current Source @
Ql and Q2 form a low-noise current summing point for error signals from U3 and forward feed
from the scan and phase lock inputs. The output current goes to the AlOA5 PLL2 VCO.

2 AlOA8

HP Part Number 85660-60176
AlOA8 PLL 2 Discriminator
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

AlOAt?

85660-60176

9

1

BOARD ASSEMBLY, PLL2 DISCRIMINATOR

28480

85660-60176

AlOA8Cl
AlOA8C2
AlOA8C3
AlOA8C4
Al OA8C5

0160-4084
0160-4084
0160-4084
0180-0291
0180-0197

8
8
8
3
8

1
1
1
1
1

CAP-FXD O.luF 50 V
CAP-FXD O.luF 50 V
CAP-FXD O.luF 50 V
CAPACITOR-FXD lUF+-10% 35VDC TA
CAPACITOR-FXD 2.2UF+-10% EOVDC TA

56289
56289
56289
56289
56289

lC20X7R104M050B
lC20X7R104M0508
lC20X7R104M0508
15DD105X9035A2-DYS
150D225X9020A2-DYS

AlOABC6
AlOA8C7
AlOA8C8
AlOA8C9
AlOABClO

0180-0197
0160-4084
0180-0229
0160-3879
0160-2199

8
8
7
7
2

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAP-FXD O.luF 50 V
CAP-FXD 33uF 10 V TA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
CAPACITOR-FXD 30PF +-5x 300VDC MICA

56289
56289
56289
04222
09023

150D225X9020A2-DYS
lC20X7R104M050B
150D336X901082-OYS
SR201C103MAAH
CD15ED300J03

AlOA8Cll
AlOA8C12
AlOA8C13
AlOA8C14
AlDA8C15

0160-4084
0160-0571
0160-4892
0160-4084
0160-4605

8
0
6
8
9

1
1
1
1
1

CAP-FXD O.luF 50 V
CAPACITOR-FXD 470PF +-20x 1OOVDC CER
CAP-FXD 1uF 25 V
CAP-FXD O.luF 50 V
CAP-FXD 36pF 500 V

56289
04222
56289
56289

lC20X7R104M050B
SR201C471MAAH
2C37Z5U105M025C
lC20X7R104M050B
302-000-COGO-3606

AlOA8C16
AlOA8C17
AlOA8C18
AlOA8C19
AlOA8C20

0160-2252
0160-3877
0160-4084
0160-4084
0160-3879

8
5
8
8
7

1
1
1
1
1

CAP-FXD 6.2pF
CAPACITOR-FXD
CAP-FXO O.luF
CAP-FXD O.luF
CAPACITOR-FXD

500 V
1OOPF +-20% 200VDC CER
50 V
50 V
.OlUF +-20% 1OOVDC CER

52763
04222
56289
56289
04222

AlOA8C21
AlOA8C22
AlOA8C23
AlOA8C24
AlOA8C25

0160-4084
0160-3879
0160-0161
0160-4084
0160-3456

8
7
4
8
6

1
1
1
1
1

CAP-FXD O.luF
CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD O.luF
CAPACITOR-FXD

50 V
.OlUF +-20X 1OOVDC CER
.OlUF +-lo% 200VDC POLYE
50 V
1OOOPF +-lo% 1KVDC CER

56289
04222
84411
56289

lC20X7R104M0508
SR201C103MAAH
HEW-238M
lC20X7R104M0508
808-542 X5E 102K

AlOA8C26
AlOA8C27
AlOA8C28
AlOA8C29
AlOA8CRl

0160-2199
0160-3877
0160-4892
0160-2437
1901-0539

2
5
6
1
3

1
1
1
1
1

CAPACITOR-FXD 30PF +-5% 300VDC MICA
CAPACITOR-FXD 1OOPF +-20% 200VDC CER
CAP-FXD 1uF 25 V
CAPACITOR-FDTHRU 5000PF +80 -20% 200V
DIODE-SCHOTTKY SM SIG

09023
04222
56289
33095

CD15ED300JD3
SR202ClOlMAAH
2C37Z5U105M025C
54-713-033-X5V-502Z

AlOA8CR2
AlOA8J2
AlOA8Ll
AlOABL2
AlOA8L3

1901-0539
1250-0544
9140-0144
9140-0144
9140-0144

3
9
0
0
0

1
1
1
1
1

DIODE-SCHOTTKY SM SIG
CONNECTOR-RF SM-SNP M SGL-HOLE-FR 50-OHM
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D-INX

98291
99800
99800
99800

051-049-0000-220
1025-36
1025-36
1025-36

AlOA8L4
AlOA8L5
AlOA8L6
AlOA8L7
AlOABMPl

9140-0392
9100-1629
9100-1666
9140-0144

0
4
9
0

1
1
1
1

INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
INDUCTOR RF-CH-MLD
NOT ASSIGNED

24226
99800
99800
99800

15M222H
1537-60
2500-54
1025-36

AlOA8MP2
AlOA8MP3
AlOA8MP4
AlOA8MP5
AlOA8MP6

0360-0270
0890-0324
1205-0250
2190-0009
2190-0124

0
8
9
4
4

1
1
1
1
1

TERMINAL-SLDR LUG LK-MTG FOR-X10-SCR
TUBING-FLEX .032-ID TFE .012-WALL
THERMAL LINK SGL TO-5/TO-39-CS
WASHER-LK INTL T NO. 8 .168-IN-ID
WASHER-LK INTL T NO. 10 .195-IN-ID

79963
09795
05820
06791
98291

807-196
II-TW,FR-1
2604 TH 5E
820-BC
3002-26

AlOA8MP7

2200-0101

0

5

SCREW-MACH 4-40 .188-IN-LG PAN-HD-POZI

77250

22UH +-3% .166D-INX.3
47UH +-5% .166D-INX.3
3.6MH +-5X .23D-INX.5
4.7UH +-lo% .105D-INX

*Indicates factory-selected value

SR202ClOlMAAH
lC20X7R104M0508
lC20X7R104M050B
SR201C103MAAH

8X60-60176 Parts List
Page 1 of 4

AlOA8 PLL 2 Discriminator
Reference
Designatior 1

HP Part
Number

Description

Mfr
Code

1
1
1
1

SCREW-MACH 4-40 .188-IN-LG UNCT 82 DEG
NUT-HEX-DEL-CHAM 8-32-THD .085-IN-THK
NUT-HEX-DBL-CHAM lo-32-THD .067-IN-THK
WASHER-FL NM NO. 8 .188-IN-ID .375-IN-OL

7725C
8012C
74163
73734

1
1
1
1
1

WASHER-SHLDR NO. 10 .194-IN-ID
PLUG HOLE .187D
WIRE 22AWG 1X22
COVER PC PLLE DISCRIMINATOR
EXTRACTOR PC

0654C
2848G
92194
28480
28480

2636-24827-PH194
6960-0059
298
85660-20059
86701-40001

WASHER-LK INTL T NO. 10 .195-IN-ID
SHIELD
NUT-HEX-DBL-CHAM lo-32-THD .109-IN-THK
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR PNP 2N2907A SI TO-18 PD=400Mh

98291
28480
73734
04713
04713

3002-26
85660-00059

2N2907A

2N3809
2N3251

t
t

AlOA8MP8
AlOA8MP9
AlOA8MPlO
AlOABMPll

2200-0164
2580-0002
2950-0078
3050-0021

AlOA8MP12
AlOABMP13
AlOA8MP14
AlOA8MP15
AlOA8MP16

3050-0907
I6960-0059
I5151-0013
I35660-20059
I36701-40001

AlOA8MP17
AlOABMP18
AlOA8MP19
AlOA8Ql
AlOA8Q2

2190-0124
I35660-00059
,!740-0001
1854-0404
1853-0281

i
C

1
1
1
1
1

AlOA8Q3
AlOA8Q3
Al OA8Q4
AlOA8Q5
AlOA8Q6

1854-1030
1854-0957
11855-0413
11853-0269
I1853-0007

(
t
:
:
i

1
0
1
1
1

DUAL TRANSISTOR X-N D SD3303 78
ALTERNATE PART FOR 1854-1030
TRANSISTOR J-FET P-CHAN D-MODE TO-18 SI
TRANSISTOR-DUAL PNP 2N3809 PD=GOOMW
TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW

17856
04713
04713

AlOA8Q7
AlOA8Q8
Al OA8Q9
AlOA8QlO
AlOA8Qll

11854-0019
I1853-0281
I1854-0247

L
c
C

1 .853-0388
I .853-0034

I
c

1
1
1
1
1

TRANSISTOR NPN
TRANSISTOR PNP
TRANSISTOR NPN
TRANSISTOR-DUAL
TRANSISTOR PNP

04713
04713
04713
04713
04713

AlOABRl
AlOA8R2
AlOA8R3
AlOA8R4
AlOA8R5

t1757-0346
I)757-0199
c1757-0123
C1757-0442
C1698-3132

2
3
3
3
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
7ESISTOR

AlOA8R6
AlOA8R7
AlOA8R8
AlOA8R9
AlOA8RlO

C1699-0078
C1699-0078
C1699-0078
2‘100-1739
01699-0082

3
3
I

1
3

1
1
1
1
1

iESISTOR 2.1K
1ESISTOR 2.1K
7ESISTOR 2.1K
?ESISTOR-TRMR
tESISTOR 215

AlOA8Rll
AlOA8R12
AlOA8R13
AlOA8R14
AlOA8R15

0 1757-0280
0 1757-0280
0 1757-0280
0 1698-3153
0 757-0280

I
I
1
1
1

1
1
1
1
1

IESISTOR
tESISTOR
ZESISTOR
ZESISTOR
{ESISTOR

AlOA8R16
AlOA8R17
AlOA8R18
AlOA8R19
AlOA8R20

0 698-3151
0 757-0280
0 698-3445
0 698-3447
0 757-1094

r
I
,
I
)

1
1
1
1
1

AlOABR21
AlOA8R22
AlOA8R23
AlOA8R24

0 698-3444
0 757-0280
0 698-3152
C1757-1094

I
I

1
1
1
1

85660-60176 Parts List
Page 2 of 4

,

I

c
1

SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400MW
SI TO-39 PD=lW FT=BOOMHZ
PNP TO-78 PD=GOOMW
SI TO-18 PD=360MW

10 +-1X .125W TF TC=O+-100
21.5K +-1% .125W TF TC=O+-100
34.8K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
261 1% .125W TF TC=O+-100

Mfr Part
Number

500220

2N2907A

91637
19701
19701
19701
19701

CMF-55-1, T-l
SFR25H
SFR25H
SFR25H
SFR25H

19701
19701
19701
32997
19701

50232
50232
50232
3005P-DM3-502
50232

1K +-1X .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
3.83K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

tESISTOR
tESISTOR
lESISTOR
lESISTOR
[ESISTOR

2.87K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
348 1% .125W TF TC=O+-100
422 1% .125W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

LESISTOR
LESISTOR
lESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
3.48K 1% .125W TF TC=O+-100
1.47K +-1% .125W TF TC=O+-100

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

+-0.1% .lW
+-0.1% .lW
+-0.1% .lW
5K 10% WW
+-0.1% .lW

TF TC=O+-10
TF TC=O+-10
TF TC=O+-10
SIDE-ADJ 20-TRN
TF TC=O+-10

*Indicates factory-selected value

HP Part Number 85660-60176
AlOA8 PLL 2 Discriminator
Reference
Designation

HP Part
Number

C
c

a!

Description

:

1

RESISTOR-TRMR 20K 10% WU SIDE-ADJ PO-TRN

32991

3005P-DM3-203

E

1
1
1
1
1

RESISTOR 390K +-0.1X .125W TF TC=O+-10
RESISTOR-TRMR 2K 10% WW SIDE-ADJ 20-TRN
RESISTOR 39K +-0.1% .125W TF TC=O+-10
RESISTOR 40.2K 1% .125W TF TC=O+-100
RESISTOR 40.2K 1% .125W TF TC=O+-100

19701
32997
19701
19701
19701

50332
3005P-DM3-202
50332
SFR25H
SFR25H

1
1
1
1
1

?ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR

40.2K 1% .125W TF TC=O+-100
3.83K 1% .125W TF TC=O+-100
6.19K +-0.1% .lW TF TC=O+-10
800 +-0.1% .125W TF TC=O+-25
90.9 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50232
5033R
SFR25H

1
1

1.96K 1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
4.667K +-0.1% .lW TF TC=O+-10

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
50232

Mfr
Code

Mfr Part
Number

AlOA8R25

2100-1972

AlOA8R26
AlOA8R27
AlOA8R28
AlOA8R29
AlOA8R30

0699-0081
2100-2851
0699-0080
0698-3499
0698-3499

AlOABR31
AlOA8R32
AlOA8R33
AlOA8R34
AlOA8R35

0698-3499
0698-3153
0699-0084
D698-6366
3757-0400

9
1
2
9

AlOA8R36
AlOA8R37
AlOA8R38
AlOA8R39
AlOA8R40

3698-0083
3698-0084
1757-0280
3757-0280
1699-0079

8
9
3
3
4

1

1
1

ZESISTOR
1ESISTOR
tESISTOR
tESISTOR
{ESISTOR

AlOA8R41
AlOA8R42
AlOA8R43
AlOA8R44
AlOA8R45

!lOO-1799
1698-8831
1757-0274
1698-0085
1698-3150

2
0
5
0
6

1
1
1
1
1

IESISTOR-TRMR 500 10% WW SIDE-ADJ EO-TRN
lESISTOR 13.4K +-0.1% .125W TF TC=O+-10
LESISTOR 1.21K +-1% .125W TF TC=O+-100
LESISTOR 2.61K 1% .125W TF TC=O+-100
LESISTOR 2.37K 1% .125W TF TC=O+-100

32997
19701
19701
19701
19701

3005P-DM3-501
50332
SFR25H
SFR25H
SFR25H

AlOA8R46
AlOA8R47
AlOA8R48
AlOA8R49
AlOA8R50

1757-0280
1757-0438
1757-0394
1757-0401
1757-0401

3
3
D
3
3

1
1
1
1
1

lESISTOR
!ESISTOR
!ESISTOR
!ESISTOR
!ESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AlOA8TPl
AlOABTP2
AlOA8TP3
AlOA8TP4
AlOA8TP6

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

ZONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL
:ONNECTOR-SGL

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

AlOA8TP7
AlOA8Ul
AlOA8Ul
AlOABU2
AlOA8U2

1251-0600
1826-0811
1826-0582
1826-0811
1826-0582

0
4
6
4
6

1
1
0
1
0

:ONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
\NALOG SWITCH 4 SPST 16 -CERDIP
\LTERNATE PART FOR 1826-0811
\NALOG SWITCH 4 SPST 16 -CERDIP
\LTERNATE PART FOR 1826-0811

27264
06665

16-06-0034
SW-OlFQ

06665

SW-OlFQ

AlOA8U3
AlOA8U3
AlOA8U4
AlOA8U5
AlOA8U6

5180-2315
5180-2314
1820-0223
1820-0429
1820-1194

1
0
0
B
6

1
0
1
1
1

[C 05C Ml OP AMP
\LTERNATE PART FOR
[C OP AMP GP TO-99
!C V RGLTR-FXD-POS
:C CNTR TTL LS BIN

28480

5180-2315

5180-2315
PKG
4.8/5.2V TO-39 PKG
UP/DOWN SYNCHRO POS-E

27014
27014
01295

LM301AH
LM309H
SN74LS193N

AlOA8U7
AlOA8U8
AlOA8U9
AlOA8UlO
AlOA8Ull

.820-1144
.826-0353
820-1196
.826-0059
826-0448

6
3
3
2
3

1
1
1
1
1

:C GATE TTL LS NOR QUAD L-INP
'C V RGLTR-FXD-POS 14.4/15.6\1 TO-39 PKG
C FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
C OP AMP GP TO-99 PKG
l/A lo-BIT 16-PLASTIC CMOS

01295
27014
01295
27014
24355

SN74LS02N
LM78L15ACH
SN74LS174N
LMZOlAH
AD7533LN(SEL)

AlOA8U12

820-1196

3

1

C FF TTL LS D-TYPE POS-EDGE-TRIG COM CL

01295

SN74LS174N

C7
EE
6

1K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

1.14-MM-BSC-SZ
1.14~MM-BSC-SZ
1.14~MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

-

*Indicates factory-selected value

8.5660-60176 Parts List
Page 3 of 4

HP Part Number 85660-60176
AlOA8 PLL 2 Discriminator
-

Reference
Designation

HP Part
Number

w

Description

Mfr
Code

Mfr Part
Number

AlOA8U13
AlOA8VRl
AlOA8Wl

L820-0223
L902-0686
15660-60086

1
1
1

IC OP AMP GP TO-99 PKG
DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%
CABLE ASSEMBLY, WHITE/VIOLET
(INCLUDES 53)

27014
04713
28480

LM301AH
lN825
85660-60086

AlOA8W2

i5660-60071

1

CABLE ASSEMBLY, RED
(INCLUDES Jl)

28480

85660-60071

-

85660-60176 Parts List
Page 4 of 4

*Indicates factory-selected value

5

R27
MHz

R25
.5 MHz

Jl
J2
S C A N VCO T U N E

R41

vco
TUNE

Rg

J3
15-.30 M H z

AlOA8 PLLP Discriminator Component Location, 85660-60176

All
YTO Loop and AllA YTO Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

With the ac line cords and RF Section bottom cover removed, proceed as follows:
1. Disconnect connector @ from AllAl (Coupler/Isolator/Amplifier) 0. Refer to view A.
2. Remove the following cables from All YTO Loop. Refer to view A.
8 (gray) (AllJl, DET OUT) @
5 (green) (AllJ3, 20/30 IN) @
93 (white/orange) (AllJ2, M/N IN) 0
0 (black) (AllJ4, IF IN) @
3. Release YTO Loop from RF Section by removing three screws @ as shown in view A.
4. Partially slide YTO Loop out from RF Section. Reach behind YTO Loop and disconnect
cable @@ from motherboard connector. Note position of cable. Refer to view B.
5. Remove All YTO Loop from RF Section.
6. To replace AllA YTO (2.0 to 6.2 GHz OSCILLATOR), proceed as follows.
a. Disconnect connector @@ from AllA YTO a@. Disconnect cable @@ from YTO
connector @. Refer to view B.
b. To remove YTO, remove two screws @ as shown in view A.
c. When installing the new YTO, reconnect connector a@ before tightening screws 0.
d. Reconnect cable a@ to YTO connector @. Refer to view B.
7. When installing All YTO Loop in RF Section, reconnect cable @@ to motherboard
before completely sliding All into RF Section. Refer to view B.
8. Secure YTO Loop to RF Section with screws @ as shown in view A.
9. Reconnect cables and connectors to YTO Loop as removed in steps 1 and 2.
10. Replace bottom cover and ac line cords.

All

1

REAR

VIEW A

VIEW B

Figure 1. Ail YTO Loop and AllA YTO Replacement

2 All

A23W3
CONNECTS
HERE
\

A l IA2
- INTERCONNECT
w9
/CONNECTS
HERE

a
-49
-@

A l lA2W3

CIA

WI 1

-

CONNECTS
HERE

-

ln

\

A

l

lA2W4

A l lW4

A l IWl

ATTENUATOR/LPF

fC,ARl F

ASSFLARI VI

Figure 2. All YTO Loop Assembly, Parts Identification (1 of 4)

All

3

Q
12

A l IA5
(Ins,ide)

Al IA4
(Inside)

A l lA2
INTERCONNECT

’ Y/

A l 1Ul

Al IA7

A l IWl

A l lA3
YTO-

L

I

1

Figure 2. All YTO Loop Assembly, Parts Identification (2 of 4)

4 All

A l lA2
INTERCONNECT

A l lA2Wl

Al lA3W3

A l 1Al
,-Y *

Figure 2. Al 1 YTO Loop Assembly, Parts Identification (3 of 4)

All

5

Item

HP Part
Number

CD

Description

1

2360-0331

6

SCREW, MACH, 632, .25-IN LG, PAN HD

28480

2

8566C~OOO24

0

DECK, YTO LOOP ASSEMBLY

28480 85660-0002~

3

2200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

28480 85660-2010(

4

85660-20100

5

EXTRACTOR, YTO LOOP ASSEMBLY

28480

2360-0333

5

2360-0333

8

SCREW, MACH, 632, .25-IN LG, FLAT HD

28480

2360-0333

6

0520-0127

6

SCREW, MACH, 2-56, .188-IN LG, PAN HD

28480

0520-0127

7

2190-0890

1

WASHER, LOCK, 2-56 (FOR SCREWS (6) & (9))

28480

2190-0890

8

1400-0970

4

CLIP, COMPONENT (FOR AllA LPF)

28480

1400-0970

9

0520-0129

8

SCREW, MACH, 2-56, .312-IN LG, PAN HD

28480 0520-0129

10

1390-0284

0

CAP SCREW ASSEMBLY

28480

11

8566@20088

8

STUD, YTO LOOP ASSEMBLY

28480 85660-20088

12

86701-20009

5

HOUSING, YTO LOOP ASSEMBLY

28480 86701-2000s

13

2200-0165

6

SCREW, MACH, 4-40, .25-IN LG, FLAT HD

28480

14

8566CLOOO35

3

COVER, HOUSING (AllA YTO c$ DET)

28480 85660-00035

15

85660-00034

2

COVER, HOUSING (AllA SAMPLER)

28480 85660-00034

16

1250-1143

6

NUT, HEX, RF CONNECTOR

28480

1250-1143

17

1250-1142

5

WASHER, LOCK, RF CONNECTOR

28480

1250-1142

Mfr
Code

Figure 2. All YTO Loop Assembly, Parts Identification (4 of 4)

6

All

Mfr Part
Number
2360-0331

1390-0284

2200-0165

Reference
Designatol

HP Part
Number

-

-

CD

3tY

RF Section Assemblies
Description

Mfr
Code a

Mfr Part
Number

-

-

AllAl

50867295

6

1

COUPLER/ISOLATOR/AMPLIFIER

AllA

8566&6012:

6

1

BOARD ASSEMBLY, INTERCONNECT, YTO LOOP
(MUST BE USED WITH AllA 50867314)

2848( I 85660-6012:

AllA

50867314

0

1

YIG-TUNED OSCILLATOR (YTO) (NEW)

2848C 1 50867314

AllA

50866314

8

1

YIG-TUNED OSCILLATOR (YTO)

2848C 1 50866314

AllA

85660-60175

8

1

BOARD ASSEMBLY, YIG-TUNED OSCILLATOR (YTO)
DETECTOR

2848C I 85660-60175

AllA

85660-60195

6

BOARD ASSEMBLY, SAMPLER

28480, 85660-60199

AllA

9135-0187

0

CABLE ASSEMBLY, LOW PASS FILTER, 6.2 GHZ

2848(I 9135-0187

AllCl

0160-3036

8

CAPACITOR-FDTHRU 500 PF +80 -20% 200 V

2848(1 01603036

AllC2

0160-3036

8

CAPACITOR-FDTHRU 500 PF +SO -20% 200 V

2848( 1 01603036

AllC3

0160-4748

1

CAPACITOR-FDTHRU 100 PF 20% 200 V CER

2848f 1 0160-4748

AllC4

0160-3036

8

CAPACITOR-FDTHRU 500 PF +80 -20% 200 V

2848( 1 01603036

AllC5

0160-3036

8

CAPACITOR-FDTHRU 500 PF +80 -20% 200 V

2848C I 01603036

AllC6

0160-4748

1

CAPACITOR-FDTHRU 100 PF 20% 200 V CER

2848C 1 0160-4748

AllC7

0160-3036

8

CAPACITOR-FDTHRU 500 PF +80 -20% 200 V

2848C I 01603036

AllC8

0160-4748

1

CAPACITOR-FDTHRU 100 PF 20% 200 V CER

28480I 0160-4748

AllCS

0160-3036

8

CAPACITOR-FDTHRU 500 PF +80 -20% 200 V

28480I 01603036

AllJl

1250-0691

7

5

CONNECTOR-RF SMB M SGL-HOLEFR 50 OHM

18480I 1250-0691

41152

1250-0691

7

5

CONNECTOR-RF SMB M SGL-HOLEFR 50 OHM

18480/ 1250-0691

41153

1250-0691

7

5

CONNECTOR-RF SMB M SGL-HOLEFR 50 OHM

18480 12504691

41154

1250-0691

7

5

CONNECTOR-RF SMB M SGLHOLEFR 50 OHM

18480 1250-0691

AllJ5

1250-0691

7

5

CONNECTOR-RF SMB M SGLHOLEFR 50 OHM

2848f 1 1250-0691

AllUl

50867292

3
-

3

3

3

1
SAMPLER, 2-6.0 GHZ
-

(CIA)

2848( 1 50867295

2848C 1 50867292

All

7

HP Part Number 85660-60123
Al lA2 YTO Loop Interconnect
Reference
Designation

HP Part C
Number D QtY

AllA

85660-60123

6

1

AllA2Cl
AllA2C2
AllALL
AllA2Rl
Al lA2R2

0180-0374
0160-3879
9100-2262
0757-0280
2100-1775

3
7
3
3
4

AllA2Wl
AllA2W2
AllA2W3
AllA2W4

8120-2801
8120-2803
85660-60108
85660-60109

7
9
7
8

Description

Mfr
Code

Mfr Part
Number

BOARD ASSEMBLY. YTO LOOP INTERCONNECT

28480

85660-60123

1
1
1
1
1

CAPACITOR-FXD lOUF+-10% ZOVDC TA
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER
INDUCTOR RF-CH-MLD 3.9UH +-lo% .105D-INX
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 5K 5% Ww TOP-ADJ l-TRN

56289
04222
24226
19701

1500106X902082-DYS
SR201C103MAAH
lOM391K
SFR25H
CT-lOO-4-5K

1
1
1
1

FLAT
FLAT
WIRE
WIRE

28480
28480
28480
28480

8120-2801
8120-2803
85660-60108
85660-60109

RIBBON ASSY 2B-AWG 14-COND
RIBBON ASSY 28-AWG 20-COND
ASSEMBLY, WHITE/RED
ASSEMBLY, WHITE/BLUE

*Indicates factory-selected value

8566040123 Parts List
Page 1 of 1

R2
GATE BIAS ADJ
w4

c
(c1
0 0 0
o”

-

-

-

Wl

I

-

I
-

l
1
I
L

I

0

1 EI
Cl

w2

+

AllA YTO Loop Interconnect Component Locations, 85660-60123

-m--m---

RF SECTION

N O T E S :
1. R E F E R E N C E DESlCNATORS WlTHlN
THIS ASSEMBLY A R E A B B R E V I A T E D .
F O R C O M P L E T E R E F E R E N C E DES,&
NATION,PREFIX A B B R E V I A T I O N W I T H
ASSEMBLY DESIGNATION.

INTERCONNECT

2 . UNLESS O T H E R W I S E INDICATED:

R I BBON CABLE
T O A23JZ

I
GND ^ 2
19
I
-40”
(COIL-) ^ 8 _
13
COIL+

+5.2v

T O FEEDTHRU
CAPACITORS ON
AIT YTD LOOP
F O R A11A5 S A M P L E R

!6_
15
I

4
17

500

;
GATE B I AS
I GATE BIAS
!s ADJ
~AllA2W4 TO AIlAl
COUPLER/ISOLATOR/
AMPLIFIER
im
I

Al lA2 YTO Loop Interconnect, Interconnect Diagram

Al IA4
Al lA4 YIG-Tuned Oscillator (YTO) Phase Detector,
Circuit Description
The AllA YTO Phase Detector compares the frequency and phase of the AllA Sampler
IF signal to the output of the A10 20/30 Synthesizer Loop. The resultant error signal is
integrated, amplified, and applied to the A21 FM Coil Driver where it is routed to either the
main coil (dc path) or FM coil (ac path) of the AllA YTO. This tunes the YTO frequency
the proper amount in the proper direction to maintain phase lock.

70 MHz LPF @
The output of the AllA Sampler (IF IN) is passed through a 70 MHz LPF to remove any
unwanted frequencies which may have been introduced during the sampling process.

Limiters @ and @ and Divide by Twos @ and @
Each of the two input signals (IF IN and 20/30 IN) are passed through a limiter to
establish ECL signal levels. Each signal is then divided by two before being applied to the
phase/frequency detector. This lowers the frequency at which the detector must operate.

Phase/Frequency Detector 0 and 1.5 MHz LPF @
The two input signals (IF IN and 20/30 IN), after being divided by two, are applied to Phase
Frequency Detector U3. The function of U3 is to output a pulse which is related to the phase
difference of the two input signals. The width of this pulse is directly proportional to the
amount of phase difference. If the IF signal leads the 20/30 signal, a negative pulse appears at
U3 pin 3 (TP3), the width of which is proportional to the amount of phase difference. If the
20/30 signal leads the IF signal, a negative pulse appears at U3 pin 12 (TP2). In each case,
the other output is an ECL high (approximately -0.6 V). If the inputs are in phase, one of
the detector outputs is an ECL high (approximately -0.6 V) with narrow negative spikes and
the other just an ECL high. The detector outputs are averaged in the 1.5 MHz LPF before
being applied to the differential amplifier.

Differential Amplifier GiJ
The detector outputs are applied to Differential Amplifier Q4. The output of this differential
amplifier is directly related to the phase difference of the IF IN and 20/30 IN signals.

AllA 1

Loop Gain Switch (ij
In frequency spans less than 25 kHz (N = l), Loop G ain Switch @ is enabled. The enable
signal HYGH (High = YTO Gain High) is from the Al2 Front-Panel Interface and is high
whenever a frequency span of less than 25 kHz is selected. This high turns on Q2 which
turns on Q3 which causes Ql to saturate. Ql then effectively becomes a short, placing R14
between the emitters of Q4A and Q4B. This lowers the emitter resistance by a factor of four,
increasing the gain by approximately 12 dB. This improves phase noise at narrow frequency
spans (<25 kHz).

Integrator #l @
Integrator #l produces a ramp output proportional to the amplitude and period of the input.
This integrating action is performed by R16, R21, and Cl2. Diodes CR2 and CR3 limit the
upper and lower ramp voltages to one diode drop (approximately 0.6 V). This ramp may be in
either a positive or negative direction depending on the input. When the loop is locked and
the instrument is in zero frequency span, the output is a dc level.

Integrator #2 @
Integrator #2 also produces a ramp output but of greater amplitude due to zener diodes VRl
and CR2. The upper and lower ramp voltages are limited by VRl/C!RG and VR2/CR7 to
approximately 6.8 V. This corresponds to a capture range of about &20 MHz, since YTO
sensitivity is -3 MHz/V. Integrating action is performed by R24, R25, and C16. In zero
frequency span, when the loop is locked, the output is a dc level.

Sample and Hold @I
The purpose of the sample and hold (Ul and associated circuitry) is to sample the ramp
voltage output of the integrators to tune the YTO frequency, then hold this dc value to
prevent the YTO loop from affecting the YTO Sweep.
For frequency spans less than 5 MHz (including ZERO), Ul is held in the sample mode. This
means that the YTO is phase locked during the entire sweep for frequency spans less than 5
MHz.
For frequency spans greater than 5 MHz (fundamental mixing only), phase lock is performed
only at the start of each sweep as follows. Just prior to a sweep, Ul is placed in the sample
mode, the sampled output is applied to YTO to correct its frequency, and phase lock occurs.
Then Ul is placed in the hold mode, which stores the sampled output voltage across Cl. This
voltage keeps the YTO tuned to the correct frequency. The sweep occurs, and the sequence is
repeated.
The mode of operation of Ul is determined by control signal HLEY (High = YTO Lock
enable) from the Al2 Front-Panel Interface. The duration of the sample mode is determined
by HLEY which varies with frequency span selected.

2 AllA

Unlock Detector @
Phase lock is obtained by use of the YTO (FM coil for ac corrections and main coil dc
corrections) which has a frequency tuning range of approximately f20 MHz at 3 MHz/V
sensitivity.
Unlock detector U2 and associated circuitry is used to determine when the error voltage is
too large for the YTO Loop to respond. This detection is performed for both positive and
negative error voltages by U2A and U2B respectively.
If the error voltage (ramp output of Integrator #2) exceeds f6.1 V, control signal HULY
(High = YTO Unlocked) is generated and routed to the Al2 Front-Panel Interface where it
causes a service request to be generated. Coded information corresponding to this request is
placed on the Instrument Bus and is detected by the Al5 Controller which turns on the YTO
UNLOCK annotation on the CRT.

AllA 3

A l lA2
INTERCONNECT
\

(12 P l a c e s )

A l lA2Wl
\

A l lA2W2
\-

Al IA1
CIA
/

/--

x -==g==
x
UT
-

04
Al IA3
YTO
A l IWl
Al IA7

A l lC9

Al lC3

A l lC8

Al ICI

Al IA1
CIA

INTERCONNECT

lA3
0
lW1
IA7

Figure 1. AllA YTO Phase Detector, Parts Identification (1 of 2)

4 AllA

Item

HP Part
Number

CD

Description

Mfr
Code

1

85660-00024

0

DECK, YTO LOOP ASSEMBLY

28480 85660-00024

2

1390-0284

0

CAP SCREW ASSEMBLY

28480

3

0520-0129

8

SCREW, MACH, 2-56, .312-IN LG, PAN HD

28480 0520-0129

4

2190-0890

1

WASHER, LOCK, 2-56 (FOR SCREW (3))

28480 2190-0890

5

8566&20088

8

STUD, YTO LOOP ASSEMBLY

28480 85660-20088

6

8566600035

3

COVER, HOUSING (AllA YTO c$ DET)

28480 8566600035

7

2200-0165

6

SCREW, MACH, 4-40, .25-IN LG, FLAT HD

28480 2200-0165

8

1250-1143

6

NUT, HEX, RF CONNECTOR

28480

9

1250-1142

5

WASHER, LOCK, RF CONNECTOR

28480 1250-1142

10

86701-20009

5

HOUSING, YTO LOOP ASSEMBLY

28480 86701-20009

11

2200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

28480 2200-0103

Mfr Part
Number

1390-0284

1250-1143

Figure 1. AllA YTO Phase Detector, Parts Identification (2 of 2)

AllA 5

HP Part Number 85660-60175
Al lA4 YTO Phase Detector
Reference
Designation

HP Part
Number

Mfr
Code

Description

Xl
-

Mfr Part
Number

AllA

85660-60175

E

1

BOARD ASSEMBLY. YTO PHASE DETECTOR

28480

85660-60175

AllA4Cl
AllA4C2
AllA4C3
AllA4C4
AllA4C5

0160-3787
0180-0116
0180-0197
0160-2307
0160-2307

E
1
E
4
4

1
1
1
1
1

CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXD
CAPACITOR-FXD

1UF +-lo%
6.8lJF+-10%
2.2lJF+-10%
47PF +-5%
47PF +-5x

MET-POLYC
TA
TA
MICA -2O/
MICA -2O/

84411
56289
56289
09023
09023

HEW-249
150D685X903582-DYS
15DD225X9020A2-DYS
CD15ED470JD3
CD15ED470J03

AllA4C6
Al lA4C7
Al lA4C8
Al lA4C9
AllA4Cll

0160-2200
0160-2264
0160-0574
0160-3879
0160-3538

E
2
3

1
1
1
1
1

CAPACITOR-FXO
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

43PF +-5% JOOVDC MICA -201
20PF +-5% 500VDC CER 0+-30
.D22UF +-20% 1OOVDC CER
.OlUF +-20% 1OOVDC CER
75DPF +-5% 1DDVDC MICA 0+7

09023
52763
04222
04222
09023

CD15ED430J03
2RDPLX05020RNPO
SR201C223MAAH
SR201C103MAAH
RDM15F751JlC

AllA4C12
AllA4C15
Al lA4C16
AllA4C17
AllA4C19

0160-0165
0160-4835
0160-2453
0160-4835
0160-4787

8
7
a

1
1
1
1
1

CAPACITOR-FXD .056UF +-lo% ZDOVDC POLYE
CAPACITOR-FXD .lUF +-10x 50VDC CER
CAPACITOR-FXD 0.22uF 80 V PDLYE-FL
CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD 22pF 100 V

84411
04222
09023
04222
04222

HEW-238M
SAllSC104KAAH
WMC08P22
SA115C104KAAH
SA102A220JAAH

AllA4C20
AllA4C21
AllA4C23
Al lA4C25
AllA4C26

0160-3661
0160-0574
0160-3538
0160-0574
0160-3879

5
3
5
3
7

1
1
1
1
1

CAPACITOR-FXD .lUF +-5% 50VDC MET-PDLYC
CAPACITOR-FXD .022UF +-20% 1DOVDC CER
CAPACITOR-FXD 750PF +-5% 1ODVDC MICA 0+7
CAPACITOR-FXD .022UF +-20x IODVDC CER
CAPACITOR-FXD .OlUF +-20% 1OOVDC CER

84411
04222
09023
04222
04222

HEW-249
SR201C223MAAH
RDM15F751JlC
SR201C223MAAH
SR201C103MAAH

AllA4C27
AllA4C28
AllA4CRl
AllA4CR2
Al lA4CR3

0160-0574
0180-0197
1901-0040
1901-0518
1901-0518

3
8
1
8
8

1
1
1
1
1

CAPACITOR-FXD .D22UF +-20% 1OOVDC CER
CAPACITOR-FXD 2.2UF+-10% POVDC TA
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SCHOTTKY SM SIG
DIODE-SCHOTTKY SM SIG

04222
56289
71468

SR2DlC223MAAH
150D225X9020A2-DYS

Al lA4CR4
AllA4CR5
AllA4CR6
AllA4CR7
AllA4Ll

1901-0040
1901-0040
1901-0040
1901-0040
9100-1620

1
1
1
1
5

1
1
1
1
1

DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 5DMA 2NS DO-35
DIODE-SWITCHING 30V 5DMA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
INDUCTOR RF-CH-MLD 15UH +-lo% .166D-INX.

71468
71468
71468
99800

1537-40

Al lA4L2
AllA4L3
AllA4L4
AllA4L5
AllA4L6

9100-1641
9100-1641
9100-0368
9100-2254
9100-2254

0
0
6
3
3

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

+-5%
+-5%
+-lo%
+-10x
+-10x

.166D-INX.
.166D-INX.
.105D-INX
.lOSD-INX
.lD5D-INX

99800
99800
32159
24226
24226

1537-94
1537-94
IA-3303M +-IO%
lOM390K
lOM390K

AllA4L7
AllA4L8
AllA4L9
Al lA4MP2
AllA4Ql

9100-0368
9100-1620
9100-1620
8151-0013
1855-0395

6
5
5
4
0

1
1
1
1
1

INDUCTOR RF-CH-MLD 330NH +-10x
INDUCTOR RF-CH-MLD 15UH +-10%
INDUCTOR RF-CH-MLD 15UH +-lo%
WIRE 22AWG 1X22
TRANSISTOR J-FET N-CHAN D-MODE

.105D-INX
.166D-INX.
.166D-INX.
TO-52 SI

32159
99800
99800
92194
17856

lA-3303M +-lo%
1537-40
1537-40
298
FN2645

AllA4Q2
AllA4Q3
Al lA4Q4
AllA4Rl
Al lA4R2

1854-0404
1853-0451
1854-1030
0698-7212
0698-7212

0
5
0
9
9

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
TRANSISTOR-DUAL NPN TO-78 PD=750MW
RESISTOR 100 +-1% .05W TF TC=O+-100
RESISTOR 100 +-1% .05W TF TC=D+-100

04713
04713
04713
19701
19701

50635
50635

AllA4R3

0698-7219

6

1

RESISTOR 196 +-1% .D5W TF TC=D+-100

19701

50635

7
5

1

7

RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD
RF-CH-MLD

240UH
24DUH
33DNH
39DNH
390NH

50VOC
35VOC
20VDC
30DVDC
3DOVDC

*Indicates factory-selected value

5082-2800
5082-2800

71468

85660-60175 Parts List
Page 1 of 2

HP Part Number 85660-60175
Al lA4 YTO Phase Detector

Reference
Designation

HP Part
Number

Mfr
Code

Description

31
-

Mfr Part
Number

7

1
1
1
1

RESISTOR 196 +-1% .05W TF TC=D+-100
RESISTOR 100 +-1% .D5W TF TC=O+-100
RESISTOR 261 1% .125W TF TC=O+-100
RESISTOR 196 1% .125W TF TC=O+-100

19701
19701
19701
19701

50635
50635
SFR25H
SFR25H

0757-0280
0757-0280
0757-0442
0757-0442
0757-0442

3
3
9
9
9

1
1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1X .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-ID0
RESISTOR 1DK +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R13
AllA4R14
AllA4R15
AllA4R16
AllA4R17

0698-7288
0757-0418
0757-0438
0757-0442
0698-3440

9
9
3
9
7

1
1
1
1
1

RESISTOR 147K +-1X .D5W TF TC=D+-100
RESISTOR 619 +-1% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1X .125W TF TC=O+-100
RESISTOR 196 1% .125W TF TC=D+-100

19701
19701
19701
19701
19701

5023R
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R18
AllA4R19
Al lA4R20
Al lA4R21
AllA4R22

0698-3132
0757-0442
0698-3154
0757-1094
0757-0442

4
9
0
9
9

1
1
1
1
1

RESISTOR 261 1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 4.22K 1% .125W TF TC=O+-100
RESISTOR 1.47K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R24*
AllA4R25
AllA4R27
Al lA4R28
Al lA4R29

0698-0082
0698-3152
0757-0440
0757-0458
0698-3157

7
7
7
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R30
AllA4R31
AllA4R32
Al lA4R33
AllA4R34

0698-3155
0757-0416
0757-0416
0698-4020
0698-0085

1
7
7
1
0

1
1
1
1
1

RESISTOR 4.64K 1% .125W
RESISTOR 511 +-1% .125W
RESISTOR 511 +-1% .125W
RESISTOR 9.531: 1% .125W
RESISTOR 2.61K 1% .125W

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R35
Al lA4R36
AllA4R37
Al lA4R43
AllA4R53

0757-0438
0698-3136
0757-0279
0757-0421
0757-0394

3
8
0
4
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

AllA4R54
AllA4Ul
Al lA4U2
AllA4U3
AllA4U4

0757-0442
1826-0422
5081-8117
1820-1344
1820-0802

9
3
3
8
1

1
1
1
1
1

RESISTOR 10K +-1X .125W TF TC=D+-100
SAMPLE AND HOLD 8 -METAL
SCREENED 1826-0092
PHASE DETECTOR
IC ECL QUAD 2 NOR GATE

19701
27014
28480

SFR25H
LF298H
5081-8117
ICMC12040P
MC10102P

AllA4U5
AllA4U6
AllA4U7
Al lA4U8
Al lA4U9

1826-0783
1820-0817
1810-0204
1820-0817
1826-0783

9
8
6
8
9

1
1
1
1
1

IC DP AMP LOW-NOISE 8-DIP-C PKG
IC FF ECL D-M/S DUAL
NETWORK-RES 8-SIP l.OK OHM X 7
IC FF ECL D-M/S DUAL
IC OP AMP LOW-NOISE 8-DIP-C PKG

18324
04713
11236
04713
18324

NE5534AFE
MC10131P
750-81
MC10131P
NE5534AFE

AllA4VRl
AllA4VR2
AllA4VR4

1902-1260
1902-1260
1902-3082

1
1
9

1
1
1

DIODE-ZNR lN5525C 6.2V 2% DO-7 PD=.4W IR
DIODE-ZNR lN5525C 6.2V 2% DO-7 PD=.4W IR
DIODE-ZNR 4.64V 5% DO-35 PD=.4W

04713
04713
04713

lN5525C
lN5525C

AllA4R4
AllA4R5
AllA4R6
Al lA4R7

0698-7219
0698-7212
0698-3132
0698-3440

E
9
4

AllA4R8
AllA4R9
AllA4RlD
AllA4Rll
AllA4R12

a

464 1% .125W TF TC=D+-100
3.481: 1% .125W TF TC=D+-100
7.5K +-1% .125W TF TC=O+-100
51.1K +-1% .125W TF TC=D+-100
19.6K 1% .125W TF TC=O+-100
TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=D+-100
TC=D+-100

5.11K +-1% .125W TF TC=D+-100
17.8K 1% .125W TF TC=O+-100
3.16K +-1% .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

-

8566040175 Parts List
Page 2 of 2

*Indicates factory-selected value

A ,:“J I
0 DET OUT

A 1%
+2ov

A I:%
HYGH

A ITI:3
HLEY

TO
TO
TO
TO
AllJ3
AllC8 A l l C 2 AllCl A,:“,,
20-30 IN HULY
-5.2v
- l o v
IF IN

Al lA4 YTO Phase Detector Component Locations, 85660-60175

Al lA5
Al IA5 Sampler, Circuit Description
The AllA Sampler mixes the output of the AllA YTO (RF INPUT) with the Nth
harmonic of the output of the A7 M/N Reference Loop (M/N IN). The 20 to 30 MHz
difference signal (IF OUT) is output to the AllA YTO Phase Detector to be compared
with the 20 to 30 MHz (20/30 IN) from the A10 20/30 Synthesizer for the purpose of phase
locking.

Sampler Drive Amplifier @
The output of the A7 M/N Reference Loop (M/N IN) is applied to common-base amplifier
Q3. The output of Q3 is ac coupled to common-emitter amplifier QS. The output of QS is
passed through an impedance matching network which provides maximum drive power to
AllUl Sampler. Adjustments Cl and C2 optimize this impedance match.

Sampler Al 1Ul
AllUl Sampler contains a step recovery diode (SRD) circuit to create harmonics of the M/N
IN signal which are mixed with the low-level (-15 dBm) RF INPUT signal from the AllA
YTO (via the AllAl Coupler/Isolator/Amplifier and AllA Attenuator/6.2 GHz LPF).
When the YTO Loop is phase locked, the mixing product of the Nth harmonic of the M/N IN
signal and the RF INPUT signal is precisely equal to the 20/30 IN signal from the A10 20/30
Synthesizer.

IF Preamplifier @
The IF Preamplifier consists of common-source amplifier Q4, common-emitter amplifier Q2,
and feedback divider R20/R16. 0 Vera11 gain provided is approximately 14 dB.

Buffer Amplifier @ and 70 MHz LPF @
The AllUl Sampler output, after being amplified, is buffered by emitter-follower Q7 and
applied to a 70 MHz low-pass filter. This filtering is done to remove any unwanted mixing
products produced by the mixing action of the sampler.

AllA 1

Gain Adjust @
After being filtered, the IF signal is applied to common-emitter amplifier Q6 which has
adjustable gain. IF Gain adjustment Rl can be adjusted to provide from 5 dB to 20 dB of
gain. This is used to adjust the level of the IF signal to the proper level for comparison to the
20/30 signal in the AllA YTO Phase Detector.

Output Amplifier @
The IF signal is further amplified by output amplifier Q5 and Ql. Gain is approximately
21 dB. This provides the proper level signal to drive the AllA YTO Phase Detector.

2 AllA

06

AllJ5

A l lC4

A l lC5

A l lC7

\

A l lA3
YTO

AllJ2

0

(6 PLACES)

0

(BENEATH
AllUl)

A l IUI
SAMPLER

w
(2 PLACES)

w(11 P L A C E S )

PL A C E S )

Figure 1. AllA Sampler, Parts Identification (1 of 2)

AllA 3

Item

HP Part
Number

CD

Description

1

8566@00024

0

DECK, YTO LOOP ASSEMBLY

28480 85660-0002~

2

2200-0165

6

SCREW, MACH, 4-40, .25-IN LG, FLAT HD

28480

3

8566GOOO34

2

COVER, HOUSING (AllA SAMPLER)

28480 85660~0003~

4

8566&20088

8

STUD, YTO LOOP ASSEMBLY

28480 85660-20086

5

86701-20009

5

HOUSING, YTO LOOP ASSEMBLY

28480 86701-2000:

6

1205-0011

0

HEAT SINK, TO-5/TO-29-CS

28480

1205-0011

7

2200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

28480

2200-0103

B

2200-0111

2

SCREW, MACH, 4-40, .5-IN LG, PAN HD

28480

2200-0111

9

3050-0105

6

WASHER, FLAT, .125-IN ID (FOR SCREW (8))

28480 3050-0105

10

86701-00054

8

SPACER, SAMPLER

28480 86701-00054

Figure 1. AllA Sampler, Parts Identification (2 of 2)

4 AllA

Mfr
Code

Mfr Part
Number

2200-0165

HP Part Number 85660-60199
Al lA5 Sampler
Mfr
Code

Description

Mfr Part
Number

AllA

85660-60199

6

1

BOARD ASSEMBLY, SAMPLER

28480

85660-60199

AllA5Cl
Al lA5C2
AllA5C3
Al lA5C4
AllA5C5

0121-0046
0121-0046
0180-0197
0180-0116
0160-2055

2
2
8
1
9

1
1
1
1
1

CAPACITOR-V TRMR-CER 9-35PF ZOOV PC-MTG
CAPACITOR-V TRMR-CER 9-35PF 200V PC-MTG
CAPACITOR-FXD 2.2lJF+-10% POVDC TA
CAPACITOR-FXD 6.8lJF+-10% 35VDC TA
CAPACITOR-FXD .OlUF +80-20x 1OOVDC CER

52763
52763
56289
56289

304-322-573
304-322-573
150D225X9020A2-DYS
150D685X903582-DYS
805-504 Y5V 1032

Al lA5C6
Al lA5C7
AllA5C8
AllA5C9
AllA5ClO

0160-2150
0160-2055
0160-3878
0180-0197
0160-2264

5
9
6
8
2

1
1
1
1
1

CAPACITOR-FXD 33PF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 1OOOpF 100 V
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 20PF +-5X 500VDC CER

09023

CD15ED330JD3
805-504 Y5V 1032
SR201C102MAAH
150D225X9020A2-DYS
2RDPLX05020RNPO

AllASCll
AllA5C12
AllA5C13
AllA5C14
AllA5C15

0160-3878
0160-2055
0180-0228
0160-4832
0160-4832

6
9
6
4
4

1
1
1
1
1

CAPACITOR-FXD 1OOOpF 100 V
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
CAPACITOR-FXD .OlUF +-10x 1OOVDC CER

56289
04222
04222

SR201C102MAAH
805-504 Y5V 1032
1500226X9015B2-DYS
SAlOlC103KAAH
SAlOlC103KAAH

AllA5C17
AllA5C18
AllA5C19
AllA5C20
AllASC21

0160-4832
0160-4832
0160-4832
0160-0939
0160-4832

4
4
4
4
4

1
1
1
1
1

CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAPACITOR-FXD .OlUF
CAPACITOR-FXD 43OpF
CAPACITOR-FXD .OlUF

CER

04222
04222
04222
09023
04222

SAlOlC103KAAH
SAlOlC103KAAH
SAlOlC103KAAH
CD15FD431JD3
SAlOlC103KAAH

AllA5C22*
AllA5C23
Al lA5C24
AllA5C25
AllA5C26

0140-0196
0160-4832
0140-0193
0140-0193
0160-2308

3
4
0
0
5

1
1
1
1
1

CAPACITOR-FXD 150PF +-5% 300VDC MICA
CAPACITOR-FXD .OlUF +-10x 1OOVDC CER
CAPACITOR-FXD 82PF +-5% 300VDC MICA
CAPACITOR-FXD 82PF +-5% 300VDC MICA
CAPACITOR-FXD 36PF +-5% 300VDC MICA

09023
04222
09023
09023
09023

CD15FD151J03
SAlOlC103KAAH
CD15EDB20JD3
CD15ED820J03
CD15ED360JD3

AllA5C27
AllA5C28
AllA5C29
AllA5C30
AllA5C31

0160-4832
0160-4832
0160-4832
0160-4832
0160-4832

4
4
4
4
4

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SAlOlC103KAAH
SAlOlC103KAAH
SAlOlC103KAAH
SAlOlC103KAAH
SAlDlC103KAAH

AllA5C32
AllA5L2
AllA5L3
Al lA5L4
AllA5L5

0160-4832
9140-0144
9100-1623
9100-2251
9100-2258

4
0
8
0
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +-lo% 1OOVOC CER
INDUCTOR RF-CH-MLD 4.7UH +-lo% .105D
INDUCTOR RF-CH-MLD 27UH +-5x .166D
INDUCTOR RF-CH-MLD 220NH +-lo% .105D
INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D

04222
99800
99800
24226
99800

SAlOlC103KAAH
1025-36
1537-48
lOM220K
1025-22

AllA5L6
AllA5L7
AllA5LlO*
AllASLll
AllA5L12

9100-2258
9100-0346
9100-2261
9100-0368
9100-2249

7
0
2
6
6

1
1
1
1
1

INDUCTOR RF-CH-MLD 1.2UH +-lo% .105D
INDUCTOR RF-CH-MLD 50NH +-20% .105D
INDUCTOR RF-CH-MLD 2.7UH +-lo% .105D
INDUCTOR RF-CH-MLD 330NH +-lo% .105D
INDUCTOR RF-CH-MLD 150NH +-10% .105D

99800
32159
99800
32159
24226

1025-22
lA5004M 20%
1025-30
lA-3303M +-lo%
lOM150K

AllA5L13
AllA5L14
Al lA5MPl
AllA5MP3
AllA5MP5

9100-2250
9100-2249

9
6

1
1

24226
24226

lDM180K
lDM15DK

1205-0011
1251-3172

0
7

1
1

INDUCTOR RF-CH-MLD 180NH +-lo% .105D
INDUCTOR RF-CH-MLD 150NH +-lo% .105D
NOT ASSIGNED
HEAT SINK TO-5/TO-39-CS
CONNECTOR-SGL CONT SKT .03-IN-BSC-SZ RND

98978
00779

TXBF-032-025B
2-331677-9

AllA5MP7

8151-0013

4

1

WIRE 22AWG 1X22

92194

298

.OlUF
.OlUF
.OlUF
.OlUF
.OlUF

+-lo%
+-lo%
+-lo%
300 V
+-lo%

+-lo%
+-lo%
+-lo%
+-lo%
+-lo%

1OOVDC
1OOVDC
1OOVDC
MICA
1OOVDC

1OOVDC
IOOVDC
1OOVDC
1OOVDC
1OOVDC

CER
CER
CER

*Indicates factory-selected vahe

04222
56289
52763
04222

8X60-60199 Parts List
Page 1 of 3

HP Part Number 85660-60199
Al lA5 Sampler
Reference
Designatior 1

HP Part
Number

c
c

Jt

Description

Mfr
Code

Mfr Part
Number
-

AllA5MP8
Al lA5Ql
Al 1A5Q2
AllA5Q3

11200-0173
I 1854-0247
I .854-0345
I.854-0247

AllA5Q4
AllA5Q5
AllA5Q6
AllA5Q7
AllA5Q8

1

‘
c
E
9

1
1
1

INSULATOR-XSTR
TRANSISTOR NPN
TRANSISTOR NPN
TRANSISTOR NPN

DAP-GL
SI TO-39 PD=lW FT=BOOMHZ
2N5179 SI TO-72 PD=200MW
SI TO-39 PD=lW FT=800MHZ

07047
04712
04713
04713

1 855-0235
1 853-0015
1 854-0345
1 854-0345
1 854-0247

7
7
a
a
9

1
1
1
1
1

TRANSISTOR J-FET N-CHAN D-MODE TO-52 SI
TRANSISTOR PNP SI PD=200MW FT=500MHZ
TRANSISTOR NPN 2N5179 SI TO-72 PD=EOOMW
TRANSISTOR NPN 2N5179 SI TO-72 PD=200MW
TRANSISTOR NPN SI TO-39 PD=lW FT=800MHZ

17856
04713
04713
04713
04713

AllA5Rl
AllA5R2
Al lA5R3
AllA5R4
AllA5R5

2 loo-3383
0 1757-0394
0 698-3440
0 698-0085
0 757-0424

4
0
7
0
7

1
1
1
1
1

RESISTOR-TRMR 50 10% TKF TOP-ADJ I-TRN
RESISTOR 51.1 +-1% .125W TF TC=O+-100
RESISTOR 196 1% .125W TF TC=O+-100
RESISTOR 2.61K 1% .125W TF TC=O+-100
RESISTOR l.lK +-1% .125W TF TC=O+-100

32997
19701
19701
19701
19701

3386P-Y46-500
SFR25H
SFR25H
SFR25H
SFR25H

Al lA5R6
AllA5R7
Al lA5R8
AllA5R9
AllA5RlO

0 757-0280
0 757-0278
0 757-0796
0 757-0399
0 698-3457

3
9
6
5
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
1.78K +-1% .125W TF TC=O+-100
82.5 +-1% .5W TF TC=O+-100
82.5 +-1X .125W TF TC=O+-100
316K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
5053R
SFR25H
SFR25H

AllASRll
AllA5R13
AllA5R15
AllA5R16
AllA5R17

0 757-0470
01 698-7216
0 757-0424
0 757-0398
0 757-0424

3
3
7
1
I

1
1
1
1
1

7ESISTOR
7ESISTOR
7ESISTOR
7ESISTOR
IESISTOR

162K +-1% .125W TF TC=O+-100
147 +-1% .05W TF TC=O+-100
1.1K +-1X .125W TF TC=O+-100
75 +-1% .125W TF TC=O+-100
l.lK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
50635
SFR25H
SFR25H
SFR25H

AllA5R18
AllA5R19
AllA5R20
AllA5R21
Al lA5R22"

0'757-0419
0:757-0421
0 8698-7224
0 698-7205
0 698-7195

1
I
3
0
7

1
1
1
1
1

IESISTOR
ZESISTOR
RESISTOR
RESISTOR
RESISTOR

681 +-1X .125W TF TC=O+-100
825 +-1% .125W TF TC=O+-100
316 +-1% .05W TF TC=O+-100
51.1 +-I% .05W TF TC=D+-100
19.6 +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
50635

AllA5R23
AllA5R24
AllA5R25
AllASR26
AllA5R27

0 698-0083
0 698-0084
0 698-0082
0 757-0280
0 757-0394

B
9
7
3
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K 1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
464 1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

Al lA5R28
AllA5R29
Al lA5R30
AllA5R31
AllA5R32

0 698-0082
0 698-7212
0 757-0346
0 757-0420
01 698-3439

7
3
!
3
1

1
1
1
1
1

RESISTOR
PESISTOR
7ESISTOR
7ESISTOR
7ESISTOR

464 1% .125W TF TC=O+-100
100 +-I% .05W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100
178 1% .125W TF TC=D+-100

19701
19701
91637
19701
19701

SFR25H
50635
CMF-55-1. T-l
SFR25H
SFR25H

Al lA5R33
Al lA5R34
AllA5R35
Al lA5R36
AllA5R37

0'757-0346
0 757-0280
01 698-3439
0:757-0394
0: 757-0394

>

1
1
1
1
1

1ESISTDR
IESISTOR
1ESISTOR
{ESISTDR
ZESISTOR

10 +-1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
178 1% .125W TF TC=O+-100
51.1 +-I% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

91637
19701
19701
19701
19701

CMF-55-1. T-l
SFR25H
SFR25H
SFR25H
SFR25H

AllA5R38
Al lA5R39
AllA5R40
AllA5R41

0;757-0180
0; 757-0180
0; 757-0394
01 598-7196

,
>

1
1
1
1

{ESISTOR
tESISTOR
[ESISTOR
!ESISTDR

31.6
31.6
51.1
21.5

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635

8X60-60199 Parts List
Page 2 of 3

3
I
1
1

1
!

+-I%
+-1X
+-1%
+-1%

.125W TF TC=O+-100
.125W TF TC=O+-100
.125W TF TC=O+-100
.05W TF TC=O+-100

*Indicates factory-selected value

A-10001 DAP
2N5179

2N5179
2N5179

HP Part Number 85660-60199
Al lA5 Sampler
Reference
Designation

HP Part
Number

Description

Mfr
Code

AllA5TPl

1360-0124

CONNECTOR-SGL CONT PIN .04-IN-BSC-SZ RNC

97300

Al lA5TP2

3360-0124

CONNECTOR-SGL CONT PIN .04-IN-BSC-SZ RNC

97300

Mfr Part
Number

-

*Indicates factory-selected value

8X60-60199 Parts List
Page 3 of 3

0

0

fL0 0z
I ;:
01 ug +
$2
p-c12 I$” ”\1

A12
Al2 Front-Panel Interface, Circuit Description
Al2 Front-Panel Interface contains the miscellaneous digital functions for interfacing with the
Al5 Controller.

Keyboard Matrix @
The keyboard is organized as a matrix (rows and columns) of normally open SPST switches.
The rows are driven by U2 and U3. U6 functions as a key-down detector. Q2 and associated
circuitry debounce the key switches, and U14B latches the key-down condition. Ul and U4
gate the key columns onto the Data Bus. By selectively enabling the key rows, Al5 Controller
can poll the keyboard.

Oven Cold Sensor @
When U22 senses the oven line is less than +17 V, it tells the Controller that the oven is no
longer cold.

Rotary Pulse Generator (RPG) Control @
UllB enables the RPG, allowing the pulses to be counted. UllA detects the direction of
rotation of the RPG (rotation of the DATA knob on the front panel). U18 and U19 count the
number of RPG pulses since the last RPG RESET. U28 provides a holdoff of about 200 ms,
until service is requested, giving the instrument time to respond to the last request and to
continue to sweep before the next request occurs; that is, to give the operator visual feedback.

Service Request @
This circuit encodes the various requests for service for the Al5 Controller.
U24 encodes the service request. U27 is a change detector (HXRF or LRMT), and U25
latches these changes. U14A detects and latches the falling edge of HSWP.
U13 also provides the reset pulses for clearing the request latches U14A, U14B, U16A, U25A,
and U25B. U16B is cleared by any pending request (that is, it restarts Al5 Controller) by
U24.
Q3 pulls HSWP low whenever a request is pending.
U12 gates the encoded request and also places HXRF or LHBZ on the Data Bus.

Al2

1

M/N Storage @
Each flag can be enabled (interrogated), or all flags can be enabled. U30 and U32 provide the
logic, and U20 stores the state of the enabled flags.

Address Decoder @
U7, UlO, and U33 decode the address lines, enabling the appropriate ICs to gate or store data
for the Data Bus.

Attenuator Correction Rom @
U8 is a PROM (programmable read-only memory) that contains the attenuation errors
(calibration data) of the RF attenuator.

Control Lines @
U9 controls certain mainframe functions, such as turning off the internal reference oscillator
(IISTD).

Options @
U21 gates the Options jumpers onto the Data Bus.

2 A12

KC0
I

KC1

KC2

KC3
I

SPACE

0

0

MHZ
-dml
see

Hz
PV
gsec

KRO

SAVE
0

RECALL
0

HOLD
0

0
0

0
0

0

(

KRl

KR2

KR3

)

0

1

a

SWEEP
TIME
0
P

ZOOM
0

0

4

/

7

C

D

Y
0

0

STOP
FREO

0

AUTO

J

K

CFS ISTEP
ZE
0

MKR/ASTPSIZE

START
FREO

NORMAL

AUTO

G

2

A

b

TRACE A

j

0 0
TRACE B

4

0 0
x
VIDEO
0 0
ENTER
dB/O I”

A
FREQUENCY
SPAN
L-

7

I

ENTER

0

REFERENCE
LEVEL

TRACE A

AZ?!?

t:

0

SIGNAL
TRACK

MAX
HOLD
0

0

P

MARKER

PEAK
SEARCH

MKR-r
REF LYL

CLEARWnTE

MAX
HOLD

VIDEO
BW
0

AUTO

R

a

h

KR

0
0

GH2
+d&r
dB

0

3

0
s
0 0 0
ATTEN

0

KR9

0

B

I

X

KR8

KC7

D-2.5
GHZ
0

2

AUTO

H

KR7

KC6

#

0 0 0 0

KR4

KR6

KC5

9

A

KR5

KC4

c

VIEW
0

A-B

TRACE A

k

0

TRACE B

TRACE B

L I N

0

THRESHOLD

BLANK

5

(zGJ& 0
9

CLEARWHITE

TRACE A

I

VIEW
0
r

d

OFF
0

SHIFT
0

0
B-OL
-8

t

0
CONT

TRACE B

0

0
OFF

THRESHOLD
w

0
LINE

Y

KR

EXT

IOTE:

(2G;1:2)

AND

=@

LOWER LEFT

I LcL I

3WER R I G H T

ARE NOT PART OF THE MATRIX

Figure 1. HP 8566 Keyboard Matrix

Al2 3

Table 1. Mnemonics Listing for RF Section
Mnemonic
ADRO-4
ATN*
BFC ON
DAV*
DIOl-8
EOI*

Active
State
LOW
LOW
LOW

Description
Address Bits 0 through 4
Attention True
Filter Capacitor IN
Data Valid
HP-IB Data Input/Output Bits
End or Identify

LOW
HIGH
HIGH
IIIGH
HIGH
HIGH
HIGH
HIGH

Phase Lock Loop 2 Lock Enable
YTO Lock Enable
Oven Cold
Power ON to IF-Display Section
Power Up
10 MIIz Standard ON
Sweeping

HIGH
HIGH
HIGH
HIGH

Phase Lock Loop 1 or 3 Unlocked
Phase Lock Loop 2 Unlocked
Heterodyne Oscillator Unlocked
M/N Unlocked

EIULR
HULY
HXRF
HYGH

HIGH
HIGH
HIGH
AIGII

REF Unlocked
YTO Unlocked
External Reference
YTO Loop Gain High

[FC*
[OBO-15
KCO-7
KRO-11
LADR
LANR

LOW
HIGII

LB10

LOW
LOW
LOW
LOW

Interface Clear
Instrument Bus Data Bits
Key Columns 0 through 7
Key Rows 0 through 11
Address LED ON
Analog Reset
Aux Out Strobe
RF Section I/O Strobe

LDAS
LIPS
LLED
LMNE

LOW
LOW
LOW
LOW

DAC Strobe
Instrument Preset
LED Strobe
M/N Output Enable

LRMT

LOW

Remove (High=Local)

LROMl-3
LRTL

LOW
LOW

Enable ROM 3-State Outputs
Local Button Pushed

HLE2
HLEY
HOVH
HPON
HPUP
HSTD
HSWP
HULl
HUL2
HULH
HULM

LAOS

4 A12

Table 1. Mnemonics Listing for RF Section (continued)
Mnemonic
LSAS
LSBY
LSRQ
LSTP
LSTS
LTGR
LTIO
LYSP
Ml-5
Nl-6
N DAC*
N RFD*
REN*
RPGl
RPG2
SAT1
SAT2
SRQ*
SW1
SW2

Active
State
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
LOW

Description
Scan Attenuator Strobe
Standby
Service Request
Stop Al5 Controller
Scan Time Strobe
Tracking Generator Request
[F-Display Section I/O Strobe
YTO Span
M/N Loop-M Inputs
M/N Loop-N Inputs

HIGH
HIGH
LOW

LOW

Data Accepted
Ready for Data
Remote Enable
Rotary Pulse
Generator Lines
Scan Integer
Attenuator
Service Request
Switch 1 (AlOA7)
Switch 2 (AlOA7)

J

Al2 5

HP Part Number 85660-60211
Al2 Front Panel Interface
Reference
Designation

HP Part
Number

Mfr Part
Number

Mfr
Code

Description

3Y
-

Al.2

85660-60211

3

1

BOARD ASSEMBLY, FRONT PANEL INTERFACE
(SERIAL PREFIXES: 2410~-2430~)

28480

85660-60211

A12Cl
AlZC2
A12C3
A12C4
A12C5

0180-0197
0180-0197
0180-0197
0160-4835
0180-2683

8
a
8
7
1

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC
CAPACITOR-FXD 2.2UF+-10% 2OVDC
CAPACITOR-FXO 2.2UF+-10% EOVDC
CAPACITOR-FXD .lUF +-lo% 50VDC
CAPACITOR-FXD 4.7UF 35VDC TA

56289
56289
56289
04222
28480

150D225X9020A2
150D225X9020A2
1500225X9020A2
SA115C104KAAH
0180-2683

A12C6
AlZC7
A12C8
A12C9
A12ClO

0180-0373
0160-4832
0160-4574
0160-4574
0160-0571

2
4
1
1
0

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.68UF+-10% 35VDC TA
.OlUF +-lo% 1OOVDC CER
1OOOPF +-lo% 1OOVDC CER
1OOOPF +-lo% 1OOVDC CER
470PF +-20% 1OOVDC CER

56289
04222
04222
04222
04222

150D684X9035A2
SAlOlC103KAAH
SAlOlC102KAAH
SAlOlC102KAAH
SR201C471MAAH

A12Cll
A12CRl
A12CR2
A12CR3
A12CR4

0160-4574
1901-0040
1901-0040
1901-0040
1901-0518

1
1
1
1
8

1
1
1
1
1

CAPACITOR-FXD 1OOOPF +-lo% 1OOVDC CER
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SCHOTTKY SM SIG

04222
71468
71468
71468

SAlOlC102KAAH

A12CR5
A12Ll
A12MP2
A12MP4
A12MP5
A12MP6

1901-0518
08558-80011
1200-0812
1480-0073
4040-0749
4040-0750

8
6
9
6
4
7

1
1
1
2
1
1

DIODE-SCHOTTKY SM SIG
FILTER COIL BLUE
SOCKET-IC 16-CONT DIP DIP-SLDR
PIN-ROLL .062 DIA .25 IN LG
EXTR PC BD BRN
EXTR PC BD RED

28480
28480
72962
28480
28480

A12Ql
A1202
A1293

1854-0404
1854-0404
1854-0404

0
0
0

1
1
1

TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW

04713
04713
04713

A12Rl
A12R2
A12R3
A12R4
AlZR5

0698-7281
0698-7268
0698-7251
0698-7272
0698-7260

2
5
6
1
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

75K +-2% .05W TF TC=O+-100
21.5K +-1% .05W TF TC=O+-100
4.22K +-1% .05W TF TC=O+-100
31.6K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

5023R
50635
50635
50635
50635

A12R6
A12R7
A12R8
A12R9
A12RlO

0698-7260
0698-7268
0757-0442
0757-0442
0757-0442

7
5
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
21.5K +-1% .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1OK +-1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
SFR25H
SFR25H
SFR25H

A12Rll
A12R12
A12R13
A12R14
AlZR15

0757-0442
0757-0442
0698-7243
0698-7243
0698-7243

9
9
6
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1DK +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50633
50635
50635

A12R16
A12R17
A12R18
AlZR19
A12R20

0698-7243
0698-7236
0757-0442
0698-7243
0757-0442

6
7
9
6
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K +-1% .05W TF TC=O+-100
1K +-1% .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
SFR25H
50635
SFR25H

AlZR21

0698-7260

7

1

RESISTOR 10K +-1% .05W TF TC=O+-100

19701

50635

TA
TA
TA
CER

5082-2800
5082-2800
08558-80011
1200-0812
99-012-062-0250
4040-0749
4040-0750

-

*Indicates factory-selected value

85660-60211 Parts List
Page 1 of 3

HP Part Number 85660-60211
Al2 Front Panel Interface
Reference
Designation

HP Part
Number

AlZR22
A12R23
A12R24
A12R25

3698-7260
3698-7243
3698-7260
3698-7243

A12R26
A12R27
A12R28
A12R29
A12R30

C
D 3)
7
1

Description

Mfr
Code

Mfr Part
Number

6
7
6

1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100
1.96K +-I% .05W TF TC=O+-100

19701
19701
19701
19701

50635
50635
50635
50635

1757-0442
1698-0083
1698-3454
1698-7243
1698-0083

9
a
3
6
a

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
215K 1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635
SFR25H

A12R31
A12R32
A12R33
AlZTPl
A12TP2

1757-0442
1698-7236
1698-7217
1251-5177
1251-5177

9
7
4
6
6

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .05W TF TC=O+-100
RESISTOR 162 +-I% .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ

19701
19701
19701

SFR25H
50635
50635
460-2984-02-03-00
460-2984-02-03-00

A12TP3
A12Ul
A12U2
A12U3
A12U4

1251-5177
La20-1491
1820-1196
1820-1196
ia20-1491

6
6
a
a
6

1
1
1
1
1

CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ
IC BFR TTL LS NON-INV HEX l-INP
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC BFR TTL LS NON-INV HEX l-INP

A12U5
A12U6
A12U7
A12U8
A12U9

1810-0206
ia20-1207
ia20-1202

a
2
7

1
1
1

1820-1196

a

A12UlO
A12Ull
A12U12
A12U13
A12U14

01295
01295
01295
01295

460-2984-02-03-00
SN74LS367AN
SN74LS174N
SN74LS174N
SN74LS367AN

11236
01295
01295

750-81
SN74LS30N
SN74LSlON

1

NETWORK-RES &SIP lO.OK OHM X 7
IC GATE TTL LS NAND 8-INP
IC GATE TTL LS NAND TPL 3-INP
P/O A6A2 NOT SEPARATELY REPLACEABLE
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL

01295

SN74LS174N

1820-1216
ia20-1112
La20-1492
1820-1216
1820-1112

1
1
1
1
1

IC
IC
IC
IC
IC

OCOR TTL LS 3-TO-a-LINE 3-INP
FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
BFR TTL LS INV HEX l-INP
OCOR TTL LS 3-TO-a-LINE 3-INP
FF TTL LS O-TYPE POS-EDGE-TRIG PRESET

01295
01295
01295
01295
01295

SN74LS138N
SN74LS74AN
SN74LS368AN
SN74LS138N
SN74LS74AN

A12U15
A12U16
A12U17
A12U18
A12U19

La20-1199
La20-1112
La20-1199
1820-2270
La20-2270

1
1
1
1
1

IC
IC
IC
IC
IC

INV TTL LS HEX l-INP
FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
INV TTL LS HEX l-INP
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E

01295
01295
01295
34335
34335

SN74LS04N
SN74LS74AN
SN74LS04N
AM25LS2569OC
AM25LS2569OC

A12U20
A12U21
A12U22
A12U23
A12U24

1820-1196
1820-1491
1826-0161
La20-1425
1820-1851

1
1
1
1
1

IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC BFR TTL LS NON-INV HEX l-INP
IC OP AMP GP QUA0 14-DIP-P PKG
IC SCHMITT-TRIG TTL LS NAND QUA0 2-INP
ICLS 148 P ENCODER a INPUT - 3 OUTPUT

01295
01295
27014
01295

SN74LS174N
SN74LS367AN
LM324N
SN74LS132N

A12U25
A12U26
A12U27
A12U28
A12U29

1820-1440
1820-1196
~820-1211
1826-0180
1820-1196

1
1
1
1
1

IC
IC
IC
IC
IC

01295
01295
01295
la324
01295

SN74LS279AN
SN74LS174N
SN74LS86AN
NE555N
SN74LS174N

A12U30
A12U31
A12U32
A12U33

.820-1210
.810-0206
.a20-1210
.820-1216

1
1
1
1

IC GATE TTL
NETWORK-RES
IC GATE TTL
IC OCOR TTL

01295
11236
01295
01295

SN74LS51N
750-81
SN74LS51N
SN74LS138N

a
6
7
6
2

LCH TTL LS QUAD
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
GATE TTL LS EXCL-OR QUAD E-INP
TIMER TTL MONO/ASTBL
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
LS AND-OR-INV DUAL 2-INP
&SIP lO.OK OHM X 7
LS AND-OR-INV DUAL E-INP
LS 3-TO-a-LINE 3-INP

-

85660-60211 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60211
Al2 Front Panel interface

*Indicates factoy-selected value

85660-60211 Parts List
Page 3 of 3

HP Part Number 85660-60246
Al2 Front Panel Interface
Reference
Designation

HPPart C
Number D Qty

Mfr
Code

Description

Mfr Part
Number

Al2

85660-60246

4

1

BOARD ASSEMBLY, FRONT PANEL INTERFACE
(SERIAL PREFIXES: 2449A - 2613~)

28480

85660-60246

A12Cl
A12C2
A12C3
A12C4
A12C5

0180-0197
0180-0197
0180-0197
0160-4835
0180-2683

a
a
a
7
1

1
i
1
1
1

CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO

56289
56289
56289
04222
04222

1500225X9020A2-OYS
1500225X9020A2-OYS
1500225X9020A2-OYS
SA115C104KAAH
MO6-035-475-20/9038

A12C6
A12C7
A12C8
A12C9
A12ClO

0180-0373
0160-4832
0160-4574
0160-4574
0160-0571

2
4
1
1
0

1
1
1
1
1

CAPACITOR-FXO .68UF+-10% 35VOC TA
CAPACITOR-FXO .OlUF +-lo% 1OOVOC CER
CAPACITOR-FXO IOOOPF +-lo% 1OOVOC CER
CAPACITOR-FXO 1OOOPF +-10X 1OOVOC CER
CAPACITOR-FXO 470PF +-20% 1OOVOC CER

56289
04222
04222
04222
04222

1500684X9035AZ-OYS
SAlOlC103KAAH
SAlOlC102KAAH
SAlOlC102KAAH
SR201C471MAAH

A12Cll
A12CRl
A12CR2
A12CR3
A12CR4

0160-4574
1901-0040
1901-0040
1901-0040
1901-0518

1
1
1
1
a

1
1
1
1
1

CAPACITOR-FXO 1OOOPF +-lo% 1OOVOC CER
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SCHOTTKY SM SIG

04222
71468
71468
71468

SAlOlC102KAAH

A12CR5
A12Ll
A12MPl
A12MP2
A12MP4

1901-0518
08558-80011

a
6

1
I

28480

5082-2800
08558-80011

1200-0812
1480-0073

9
6

1
1

DIODE-SCHOTTKY SM SIG
INDUCTOR BLUE COIL
NOT ASSIGNED
SOCKET-IC 16-CONT DIP DIP-SLOR
PIN-ROLL .062-IN-OIA .25-IN-LG BE-CU

91506
72962

716-AGlO
99-012-062-0250

A12MP5
A12MP6
A12Ql
A12Q2
A12Q3

4040-0749
4040-0750
1854-0404
1854-0404
1854-0404

4
7
0
0
0

1
1
1
1
1

EXTR-PC BO BRN POLYC .062-IN-BO-THKNS lEXTR-PC BO RED POLYC .062-IN-BO-THKNS lTRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR NPN SI TO-18 PO=360MW

28480
28480
04713
04713
04713

4040-0749
4040-0750

A12Rl
A12R2
A12R3
A12R4
A12R5

0698-7281
0698-7268
0698-7251
0698-7272
0698-7260

2
5
6
1
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

75K +-2% .05W TF TC=O+-100
21.5K +-1% .05W TF TC=O+-100
4.22K +-1% .05W TF TC=O+-100
31.6K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

5023R
50635
50635
50635
50635

A12R6
A12R7
A12R8
A12R9
A12RlO

0698-7260
0698-7268
0757-0442
0757-0442
0757-0442

7
5
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
21.5K +-1% .05W TF TC=O+-100
10K +-I% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50633
50635
SFR25H
SFR25H
SFR25H

A12Rll
A12R12
A12R13
A12R14
A12R15

0757-0442
0757-0442
0698-7243
0698-7243
0698-7243

9
9
6
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
50635

A12R16
A12R17
A12R18
A12R19
A12R20

0698-7243
0698-7236
0757-0442
0698-7243
0757-0442

6
7
9
6
9

1
1
1
1
1

RESISTOR 1.96K +-1X .05W TF TC=O+-100
RESISTOR 1K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 1.96K +-1% .05W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
SFR25H
50635
SFR25H

2.2UF+-10%
2.2UF+-10%
2.2UF+-10%
.lUF +-lo%
4.7UF+-20%

20VOC
20VOC
20VOC
SOVOC
35VOC

TA
TA
TA
CER
TA

*Indicates factoy-selected value

5082-2800

85660-60246 Parts List
Page 1 of 3

HP Part Number 85660-60246

Reference
Designation

HP Part
Number

C

sty
-

D

Al2 Front Panel Interface
Description

Mfr
Code

Mfr Part
Number

A12R21
A12R22
A12R23
A12R24
A12R25

0698-7260
0698-7260
0698-7243
0698-7260
0698-7243

7
7
6
7
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
10K +-I% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
10K +-1% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A12R26
A12R27
A12R28
A12R29
A12R30

9757-0442
3698-0083
3698-3454
0698-7243
0698-0083

9
a
3
6
a

1
1
1
1
1

?ESISTOR
iESISTOR
7ESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
215K 1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635
SFR25H

A12R31
A12R32
A12R33
AlETPl
A12TP2

0757-0442
0698-7236
0698-7217
1251-5177
1251-5177

9
7
4
6
6

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .05W TF TC=O+-100
RESISTOR 162 +-1% .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ

19701
19701
19701

SFR25H
50635
50635
460-2984-02-03-00
460-2984-02-03-00

A12TP3
A12Ul
A12U2
A12U3
A12U4

1251-5177
1820-1491
1820-1196
1820-1196
1820-1491

6
6
a
a
6

1
1
1
1
1

CONNECTOR-SGL CONT PIN .O%l-IN-BSC-SZ
IC BFR TTL LS NON-INV HEX I-INP
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC BFR TTL LS NON-INV HEX l-INP

A12U5
A12U6
A12U7
A12U8
A12U9
A12UlO

1810-0206
1820-1207
1820-1202

a
2
7

1
1
1

1820-1196
1820-1216

a
3

A12Ull
A12U12
A12U13
A12U14
A12U15

01295
01295
01295
01295

460-2984-02-03-00
SN74LS367AN
SN74LS174N
SN74LS174N
SN74LS367AN

11236
01295
01295

750-81
SN74LS30N
SN74LSlON

1
1

NETWORK-RES &SIP lO.OK OHM X 7
IC GATE TTL LS NAND 8-INP
IC GATE TTL LS NAND TPL 3-INP
P/O A6A2 NOT SEPARATELY REPLACEABLE
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC OCOR TTL LS 3-TO-a-LINE 3-INP

01295
01295

SN74LS174N
SN74LS138N

1820-1112
1820-1492
1820-1216
1820-1112
1820-1199

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
BFR TTL LS INV HEX I-INP
OCOR TTL LS 3-TO-a-LINE 3-INP
FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
INV TTL LS HEX l-INP

01295
01295
01295
01295
01295

SN74LS74AN
SN74LS368AN
SN74LS138N
SN74LS74AN
SN74LS04N

A12U16
A12U17
A12U18
A12U19
A12U20

1820-ii12
1820-1199
1820-2270
1820-2270
1820-1196

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
INV TTL LS HEX l-INP
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL

01295
01295
34335
34335
01295

SN74LS74AN
SN74LS04N
AM25LS2569OC
AM25LS2569OC
SN74LS174N

A12U21
A12U22
A12U23
A12U24
A12U25

1820-1491
1826-0161
1820-1425
1820-1851
1820-1440

1
1
1
1
1

IC
IC
IC
IC
IC

BFR TTL LS NON-INV HEX I-INP
OP AMP GP QUAD 14-DIP-P PKG
SCHMITT-TRIG TTL LS NAND QUAD 2-INP
ENCOR TTL LS
LCH TTL LS QUAD

01295
27014
01295
01295
01295

SN74LS367AN
LM324N
SN74LS132N
SN74LS148N
SN74LS279AN

A12U26
A12U27
A12U28
A12U29
A12U30

1820-1196
1820-1211
la26-0180
1820-1196
La20-1210

1
1
1
1
1

IC
IC
IC
[C
IC

FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
GATE TTL LS EXCL-OR QUAD 2-INP
TIMER TTL MONO/ASTBL
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
GATE TTL LS AND-OR-INV DUAL L-INP

01295
01295
la324
01295
01295

SN74LS174N
SN74LS86AN
NE555N
SN74LS174N
SN74LS51N

A12U31
A12U32

1810-0206
1820-1210

1
1

NETWORK-RES a-SIP lO.OK OHM X 7
IC GATE TTL LS AND-OR-INV DUAL 2-INP

11236
01295

750-81
SN74LS51N

6
7
6
2
5

a
7

-

8566040246 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60246
Al2 Front Panel Interface
-

Reference
Designation

HP Part
Number

m

Description

Mfr
Code

Mfr Part
Number

A12U33
A12W2

1820-1216
3757-0346

1
1

IC OCOR TTL LS 3-TO-a-LINE 3-INP
RESISTOR 10 +-I% .125W TF TC=O+-100

*Indicates factory-selected value

01295
91637

SN74LS138N
CMF-55-1, T-l

85660-60246 Parts List
Page 3 of 3

HP Part Number 85660-60290
Al2 Front Panel Interface
Reference
Designation

HP Part C
N u m b e r D Qty

Al2

85660-60290

A12Cl
A12C2
A12C3
A12C4
A12C5

0180-0197
0180-0197
0180-0197
0160-4835
0180-2683

A12C6
A12C7
A12C8
A12C9
A12ClO

4

Mfr
Code

Description

Mfr Part
Number

1

BOARD ASSEMBLY, FRONT PANEL INTERFACE
(SERIAL PREFIX: 2618A)

28480

85660-60290

a
a
a
7
1

I
1
1
1
1

CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO

2.2UF+-10%
2.2UF+-10%
2.2UF+-10%
.lUF +-lo%
4.7UF+-20%

56289
56289
56289
04222
04222

1500225X9020A2-OYS
1500225X9020A2-OYS
1500225X9020A2-OYS
SA115C104KAAH
MO6-035-475-20/9038

0180-0373
0160-4832
0160-4574
0160-4574
0160-0571

2
4
1
1
0

1
1
1
1
1

CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO
CAPACITOR-FXO

.68UF+-10x 35VOC TA
.OlUF +-lo% 1OOVOC CER
1OOOPF +-lo% IOOVOC CER
1OOOPF +-lo% 1OOVOC CER
470PF +-20% IOOVOC CER

56289
04222
04222
04222
04222

1500684X9035A2-OYS
SAlOlC103KAAH
SAlOlC102KAAH
SAlOlC102KAAH
SR201C471MAAH

A12Cll
AlECRl
A12CR2
A12CR3
A12CR4

0160-4574
1901-0040
1901-0040
1901-0040
1901-0518

1
1
1
1
a

1
1
1
1
1

CAPACITOR-FXO IOOOPF +-lo% 1OOVOC CER
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35
DIODE-SCHOTTKY SM SIG

04222
71468
71468
71468

SAlOlC102KAAH

A12Ll
AlZMPl
A12MP2
A12MP4

08558-80011

6

1

28480

08558-80011

1200-0812
1480-0073

9
6

1
1

INDUCTOR BLUE COIL
NOT ASSIGNED
SOCKET-IC 16-CONT DIP DIP-SLOR
PIN-ROLL .062-IN-OIA .25-IN-LG BE-CU

91506
72962

716-AGlO
99-012-062-0250

A12MP5
A12MP6
A12Ql
A12Q2
A1293

4040-0749
4040-0750
1854-0404
1854-0404
1854-0404

4
7
0
0
0

1
1
1
1
1

EXTR-PC BO BRN POLYC .062-IN-BO-THKNS lEXTR-PC BO RED POLYC .062-IN-BO-THKNS lTRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR NPN SI TO-18 PO=360MW

28480
28480
04713
04713
04713

4040-0749
4040-0750

A12Rl
A12R2
A12R3
A12R4
A12R5

0698-7281
0698-7268
0698-7251
0698-7272
0698-7260

2
5
6
1
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

75K +-2X .05W TF TC=O+-100
21.5K +-1X .05W TF TC=O+-100
4.22K +-1% .05W TF TC=O+-100
31.6K +-1% .05W TF TC=O+-100
10K +-1X .05W TF TC=O+-100

19701
19701
19701
19701
19701

5023R
50635
50635
50635
50635

A12R6
A12R7
A12R8
A12R9
A12RlO

0698-7260
0698-7268
0757-0442
0757-0442
0757-0442

7
5
9
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
21.5K +-1% .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
SFR25H
SFR25H
SFR25H

A12Rll
A12R12
A12R13
A12R14
A12R15

0757-0442
0757-0442
0698-7243
0698-7243
0698-7243

9
9
6
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
50635
50635
50635

A12R16
A12R17
A12R18
A12R19
A12R20

0698-7243
0698-7236
0757-0442
0698-7243
0757-0442

6
7
9
6
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.96K +-1% .05W TF TC=O+-100
1K +-1% .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

50635
50635
SFR25H
50635
SFR25H

A12R21

0698-7260

7

1

RESISTOR IOK +-1% .05W TF TC=O+-100

19701

50635

20VOC
20VOC
20VOC
50VOC
35VOC

TA
TA
TA
CER
TA

*Indicates factory-selected value

5082-2800

85660-60290 Parts List
Page 1 of 3

HP Part Number 85660-60290
Al2 Front Panel Interface
-

Reference
Designation

HP Part
Number

Description

m

Mfr
Code

Mfr Part
Number

A12R22
A12R23
A12R24
A12R25

0698-7260
0698-7243
0698-7260
0698-7243

7
6
7
6

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .05W TF TC=O+-100
1.96K +-1X .05W TF TC=O+-100
10K +-I% .05W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100

19701
19701
19701
19701

50635
50635
50635
50635

A12R26
A12R27
A12R28
A12R29
A12R30

0757-0442
0698-0083

9

0698-3454
0698-7243
0698-0083

3
6
E

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

IOK +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
215K 1% .125W TF TC=O+-100
1.96K +-1% .05W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50635
SFR25H

A12R31
A12R32
A12R33
AlETPl
A12TP2

0757-0442
0698-7236

9
7
4
6
6

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1X .05W TF TC=O+-100
RESISTOR 162 +-1X .05W TF TC=O+-100
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ
CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ

19701
19701
19701

SFR25H
50635
50635
460-2984-02-03-00
460-2984-02-03-00

A12TP3
A12Ul
A12U2
A12U3
A12U4

1251-5177
1820-1491
1820-1196
1820-1196
1820-1491

6
6
6

1
1
1
1
1

CONNECTOR-SGL CONT PIN .031-IN-BSC-SZ
IC BFR TTL LS NON-INV HEX l-INP
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC BFR TTL LS NON-INV HEX l-INP

A12U5
A12U6
A12U7
A12U8
A12U9
A12UlO

1810-0206
1820-1207
1820-1202

8
2
7

1
1
1

1820-1196
1820-1216

3
3

A12Ull
A12U12
A12U13
A12U14
A12U15

1820-1112
1820-1492
1820-1216
1820-iii2
1820-1199

3
7
3

A12U16
A12U17
A12U18
A12U19
A12U20

1820-1112
1820-1199
1820-2270
1820-2270
1820-1196

A12U21
A12U22
A12U23
A12U24
A12U25

1820-1491
1826-0161
1820-1425
1820-1851
1820-1440

A12U26
A12U27
A12U28
A12U29
A12U30
A12U31
A12U32
A12U33

0698-7217
1251-5177
1251-5177

a

01295
01295
01295
01295

460-2984-02-03-00
SN74LS367AN
SN74LS174N
SN74LS174N
SN74LS367AN

11236
01295
01295

750-81
SN74LS30N
SN74LSlON

1
1

NETWORK-RES &SIP lO.OK OHM X 7
IC GATE TTL LS NAND 8-INP
IC GATE TTL LS NAND TPL 3-INP
P/O A6A2 NOT SEPARATELY REPLACEABLE
IC FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
IC OCOR TTL LS 3-TO-a-LINE 3-INP

01295
01295

SN74LS174N
SN74LS138N

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
BFR TTL LS INV HEX l-INP
OCOR TTL LS 3-TO-&LINE 3-INP
FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
INV TTL LS HEX l-INP

01295
01295
01295
01295
01295

SN74LS74AN
SN74LS368AN
SN74LS138N
SN74LS74AN
SN74LS04N

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE POS-EDGE-TRIG PRESET
INV TTL LS HEX l-INP
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
CNTR TTL LS BIN UP/DOWN SYNCHRO POS-E
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL

01295
01295

01295

SN74LS74AN
SN74LS04N
AM25LS2569OC
AM25LS2569OC
SN74LS174N

6
7
6
2
5

1
1
1
1
1

IC
IC
IC
IC
IC

BFR TTL LS NON-INV HEX l-INP
OP AMP GP QUAD 14-DIP-P PKG
SCHMITT-TRIG TTL LS NAND QUAD L-INP
ENCOR TTL LS
LCH TTL LS QUAD

01295
27014
01295
01295
01295

SN74LS367AN
LM324N
SN74LS132N
SN74LS148N
SN74LS279AN

1820-1196
1820-1211
1826-0180
1820-1196
ia20-1210

3
3
3
3
7

1
1
1
1
1

IC
IC
IC
IC
IC

FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
GATE TTL LS EXCL-OR QUAD 2-INP
TIMER TTL MONO/ASTBL
FF TTL LS O-TYPE POS-EDGE-TRIG COM CL
GATE TTL LS AND-OR-INV DUAL 2-INP

01295
01295
la324
01295
01295

SN74LS174N
SN74LS86AN
NE555N
SN74LS174N
SN74LS51N

1810-0206
1820-1210
1820-1216

a

1
1
1

NETWORK-RES &SIP 10.OK OHM X 7
IC GATE TTL LS AND-OR-INV DUAL 2-INP
IC OCOR TTL LS 3-TO-a-LINE 3-INP

11236
01295
01295

750-81
SN74LS51N
SN74LS138N

a
a

a
1

7
3

-

85660-60290 Parts List
Page 2 of 3

*Indicates factoy-selected value

34335
34335

HP Part Number 85660-60290
Al2 Front Panel Interface
Reference
Designation
A12W2

HP Part
Number
3757-0346

C

Description

D
2

1

RESISTOR 10 +-1% .125W TF TC=O+-100

*Indicates factory-selected value

Mfr
Code
91637

Mfr Part
Number
CMF-55-l. T-l

85660-60290 Parts List
Page 3 of 3

( P / O A23W7)
J8

XA15Pl

XA12Pl

A23 Motherboard Instrument Bus, Interconnect Diagram

85660-60290

0
TPI

85660-60246

w

TR %I
nion

26

~nnnnnnnnnnnnnnn

[pz- ml

50

1

t
25
F
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ,
P I
P 2

1
16

18
36

19

P3

0
TPI

85660-60211

II Eel

Ml pq

m

15
30

TEA,,,,,

k

m
164

I

-

tIzEL

-

IA2663 r

rxzq 1~211

nononnnnnnnnonnnnnJ

I
19

P2

18
36

l

r

i

pRT pi71

1 nnnnnnnnnnnnnnn

(R18

1
16

P3

15
30

Al2 Front-Panel Interface Component Locations, 85660-60211, 85660-60246, 85660-60290

Al5
Al5 Controller, Circuit Description
The Al5 controller performs the main control functions of the spectrum analyzer. The
board includes a 16-bit microprocessor (the instrument’s main processor), read-only memory
(ROMs), random-access memory (RAMS), and HP-IB circuitry.
The schematic shows how the main processor, memory, HP-IB, and other circuits on the A15
Controller are interconnected via the microprocessor’s 23-bit address bus and the 16-bit data
bus. To control signal flow on these buses, various signals must be derived from the address
bus signals and the microprocessor’s remaining output signals. These control signals are
generated by two programmable-array-logic integrated circuits (PALS) and other discrete
logic (R/W DECODE, ADDRESS DECODER AND DTACK, ADDRESS DECODE, and
LTIO/LBIO blocks). The signals are used by the microprocessor to control data flow and
address decoding on the Al5 Controller and to control signal flow over the Instrument Bus.
The 16-bit, 8 MHz MC68000 microprocessor receives input through the front panel keyboard
or from HP-IB, performs the necessary decoding and calculations, and outputs the proper
control signals to execute a specific spectrum analyzer operation. Typical main processor
tasks include phase-locking the YTO, selecting the correct sweep time and frequency span,
setting the IF-Display Section resolution bandwidth and sensitivity, and displaying the current
control settings on the CRT through the A3 Digital Storage Section. Instructions that tell the
microprocessor how to accomplish these tasks, the firmware, are stored in ROMs located on
the Al5 Controller. In addition, custom commands and programming can be downloaded into
RAM, permitting specialized operation without requiring a dedicated controller.
The microprocessor performs a brief power-on pretest (POP) at instrument turn-on, verifying
operation of critical circuits and lighting front-panel check LEDs I and II. In addition, LEDs
located on the top edge of the Al5 Controller provide information to help identify particular
faulty circuit components in case a failure occurs.
The instrument’s main memory consists of read-only memory (ROM) and random-access
memory (RAM)w h’rc h are located on the Al5 controller. Each 16-bit word in memory is
composed of two 8-bit bytes. The ROM, used to provide permanent storage of the firmware,
is composed of four 32 Kbyte erasable programmable read-only memory (EPROMS). This
provides a total of 64 K-words of ROM. The RAM, used for erasable storage of custom
instructions and programs, is composed of four 8 Kbyte static CMOS memory-integrated
circuits for a total of 16 K-words of RAM. A lithium battery located on the Al5 Controller
provides battery backup power to the CMOS RAM to preserve the contents of memory
when power is removed from the instrument. The typical in-circuit life expectancy of the
non-rechargeable battery is at least three years.
The HP-IB allows the spectrum analyzer to communicate with external devices. It is
implemented using four ICs: a data latch, an HP-IB processor, and two bus transceivers.
The Al5 Controller clock circuit generates an ~-MHZ clock signal for the 16-bit microprocessor
and a synchronous ~-MHZ clock signal for the HP-IB processor. The appropriate clock
A15 1

frequency is derived from division of the output signal of a 14.7456 MHz hybrid crystal clock
oscillator.
The Al5 Controller firmware includes extensive diagnostics which are executed whenever the
instrument is powered up or the INSTRUMENT PRESET key is pressed.
The microprocessor executes a self-test routine and indicates the results via LEDs. A memory
failure, microprocessor failure, or Instrument Bus failure can usually be pinpointed to the
failed component using these indicators.

HP-IB Address Switch
The position of the address switch on the Al5 Controller (A15SWl) determines which HP-IB
address is used by the analyzer when the line power is turned on.
The address switch is preset to 31 (switches Al through A5 pressed up) at the factory. If the
CMOS backup battery has not been discharged, the last HP-IB address used by the analyzer
is active at instrument power-up. If the backup battery is discharged, the analyzer will default
to an HP-IB address of 18 at instrument power-up.
If the address switch is set to any address from 0 to 30, this address will be used as the
read/write address by the analyzer with power on.
Switch A6 is also set in the “up” position (logic 1) at the factory. A6 in this position does a
checksum verification of the two pairs of ROMs on the Al5 Controller as part of the self-test
routine with power.

HP-IB Signal Ground (A25)
The A25 HP-IB Signal Ground assembly provides chassis ground for the HP-IB shield. Pins
12 and 18 through 24 of the HP-IB connector J2 are immediately grounded to the chassis
upon entering the instrument.

Firmware
The firmware for the HP 8566B has been changed several times since its origin. These changes
of firmware have required that U37, U38, U39, and U40 EPROMs be changed. The following
table lists each of the HP 8566B firmware changes, the firmware date (displayed when the HP
8566B is powered on), the HP part numbers for the EPROMs, and the serial number prefixes
of the HP 8566B that the firmware revision was originally manufactured with.

2 A15

Revision Firmware
Revision
Firmware EPROM
EPROM Part
Part Serial
Serial
Code
Date
Numbers
Prefixes
A
13.9.86

85660-80053
85660-80054
85660-80055
85660-80123
85660-80056

2410A
through
2421A

B

17.7.84

85660-80071 2430A
85660-80071
2430A
85660-80072
85660-80072 through
85660-80073 2449A
85660-80073
2449A
85660-80074

c

14.1.85

85660-80080 2503A
85660-80080
2503A
85660-80081 through
85660-80081
85660-80082 2516A
85660-80082
2516A
85660-80083

D

5.5.85

85660-80092 2526A
85660-80092
2526A
85660-80093
85660-80094
85660-80095

E

16.7.85

85660-80104
85660-80104 2526A
2526A
85660-80105 through
85660-80105
85660-80106 2627A
85660-80106
2627A
85660-80107

F

13.9.86

85660-80123 2635A
2635A
85660-80124
85660-80125
85660-80126

G

29.9.86

85660-80148 2635A
85660-80148
2635A
85660-80149
85660-80149 through
85660-80150 2937A
85660-80150
2937A
85660-80151

H

10.10.89 85660-80185
10.10.89
85660-80185 2949A
2949A
and
85660-80186
85660-80187 Above
85660-80187
Above
85660-80188

Al5 3

Al5 Controller, Troubleshooting
Troubleshooting the Al5 Controller is divided into two levels:
Level 1 is Self Test which uses the built-in diagnostics of the spectrum analyzer to isolate
the failure. No external test equipment is required.
Level 2 is Manual Tests which require the use of general troubleshooting equipment such as
a digital voltmeter and oscilloscope. This level is required when the Self Test can’t isolate
the failure.

Level 1 Self Test
The Self Test is run on power-up and after pushing the [INSTRUMENT PRESET) key. Two
front panel LEDs, INSTR CHECK I and II, give an indication of Self Test results (without
removing any covers from the instrument). There are also 15 LEDs on the Al5 Controller
(DSl through DS15) that will help isolate a problem.

Front Panel INSTR CHECK I and II LEDs
The two red INSTR CHECK LEDs are forced on whenever the instrument is turned on or
the (INSTRUMENT PRESET) key is pushed. The main processor then performs a check of itself, a
checksum verification of all ROMs on the Al5 Controller, a partial check of the Instrument
Bus (50-wire bus), and a read/write check of the RAMS and A3A4 Memory in the IF-Display
Section.
If all the checks pass, both INSTR CHECK LEDs are turned off. If the check fails, one or
both INSTR CHECK LEDs remain on.
a. Both INSTR CHECK LEDs on indicates a problem on the Al5 Controller. First remove
the Al5 Controller and make sure that the 50-wire ribbon cable and HP-IB ribbon cable
are pressed all the way onto A15Jl and A15J2 connectors. Reinstall the Al5 Controller. If
both front panel INSTR CHECK LEDs still remain on when the instrument is turned on,
follow procedure under Al5 Controller Self Test.
b. Left LED (INSTR CHECK I) on indicates a failure occurred when checking Digital Storage
Memory (A3A4). First check to ensure that a LINE power cord is connected to the
IF-Display Section. Also check to se that the rear-panel Analyzer Bus Interconnect Cable,
W31, is properly connected. If INSTR CHECK I still remains on when the instrument is
turned on, troubleshoot the A3 Digital Storage in the IF-Display Section.
c. Right LED (INSTR CHECK II) on indicates a failure occurred during the partial check of
the Instrument Bus.

Note

The partial interface check reads the key column lines (KC0 through
KC7) from the Al and A5 front panels. If any front panel key is shorted
or stuck closed, INSTR CHECK II LED should remain on after the Self
Test is completed. This part of the Self Test can easily be verified by
pushing any key, except ILCL), and holding the key in while pushing the
[ INSTRUMENT PRESET ) key. If the I/O interface check routine is working, INSTR
CHECK II LED will stay on.

d. Suspected Digital Failure but no INSTR CHECK LEDs on may indicate a RAM or I/O
bus failure which is not checked in the normal Self Test or “POP” (Power On Preset). If
4 Al5

the two front panel INSTR CHECK LEDs turn on when the LINE switch is set to ON
and within a few seconds turn off (indicating no digital problems), but symptoms (such as
improper CRT display or improper response to particular commands) indicate that the
problem is in the digital area, a “LONG POP” can be performed. LONG POP is very
similar to the normal POP except an additional processor check is performed, all of the
RAM locations in Digital Storage (A3A4 Memory) are checked, and the memory (RAM) on
the Al5 Controller is verified.
Since these more extensive checks require altering information that has been stored in
RAM, LONG POP requires an internal jumper on the Al5 Controller. To perform a LONG
POP:
n

Set the LINE Switch to STANDBY.

n

Place a jumper between ST or STS to T3
q

On Al5 Controller (HP part number 85660-60209) jumper A15TP4 (STS) to A15TPl-7

(TV
c7 On Al5 Controller (HP part number 85660-60245) jumper A15TPl-9 (ST) to
A15TPl-8 (T3).
q
(Refer to Al5 Controller Component Location Diagrams for location of test points).
n

Set the LINE switch to ON.

When LINE switch is then set to ON, the two red INSTR CHECK LEDs are forced on and
the main processor steps through the Self Test routine, expanding the normal POP by the
additional tests mentioned. The expected results for a LONG POP are exactly the same as
for the normal POP of INSTR PRESET as described above under “Front Panel INSTR
CHECK I and II LED?.
Because LONG POP is a “destructive test” (it alters any information that has been stored
in RAM), it should be performed only as a last resort effort in troubleshooting what
appears to be a memory or processor-related problem.

Al5 Controller Self Test
The Al5 Controller Self Test is run on power-up and after pushing the (INSTRUMENT PRESET]
key. Fourteen LEDs (A15DSl through A15DS14) on the Al5 Controller give an indication of
the Self Test results. All 14 LEDs are forced on whenever the instrument is turned on or the
( INSTRUMENT PRESET ) key is pushed. The main processor (A15U26) then performs a check of
itself, a check of the Peripheral Interface and Timer chip, a checksum verification of all the
ROMs on the Al5 Controller, a read/write check of the RAMS on the Al5 Controller, and an
Instrument Bus check that checks the I/O Bus, Address Bus, and Data Bus for stuck lines.
If all the checks pass, the 14 LEDs are turned off serially as each check is completed. If the
checks fail, one or more LEDs remain on. Refer to Table 1, “A15 Controller Self Test Fail
Indicators,” at the end of this troubleshooting section.
Other failure modes to look for are:
a. If the 14 LEDs turn on but are all turned off at the same time (instead of sequentially), the
Peripheral Interface and Timer chip has most likely failed.
b. When an I/O failure is indicated (DS3, DS4, or a combination of these LEDs remain on), it
may become necessary to use an oscilloscope to locate a stuck line.

A15

5

Try replacing U20 and U42 PALS first, then try replacing U39 and U40 ROMs. If I/O
failure still occurs, probe I/O lines with oscilloscope.

Level 2 Manual Tests
If the Self Test doesn’t lead to a failed component, it will be necessary to use a DVM or an
oscilloscope. The following procedure may help locate the failed component:
a. Check all power supply voltages that supply power to the Al5 Controller.
b. Check processor clock by connecting oscilloscope to A15TP2-4 (CK). The clock frequency
should be approximately 7.36 MHz. The amplitude should be approximately +5 V (HIGH)
and 0 V (LOW). Also check for LCLK at pin 7 of A15U27B.
c. Check HP-IB clock at pin 5 of A15U27A. The HP-IB clock frequency should be
approximately 3.68 MHz. The amplitude should be approximately +5 V (HIGH) and 0 V
(LOW).
d. Some intermittent failures may require the use of heat (hair dryer) or cold (freeze mist) to
isolate the failure.

Caution

6 Al5

Care should be exercised to avoid getting components too hot. Excessive heat
may cause permanent damage of good components. Also, avoid spraying freeze
mist directly on PC boards. Failures due to high-resistance paths between
traces on PC boards have been caused by spraying the boards with freeze
mist.

Table l-l. Al5 Controller Self Test Fail Indicators
Al5 LED
On

Affected
Circuitry

DSl

Processor

DS2

Top Box Address

DS3

Probable Failure
Al5U26

1

Use oscilloscope to isolate failure.

Bottom Box Address Use oscilloscope to isolate failure

DS4

I/O, Data Bus

Use oscilloscope to isolate failure.

DS5

RAM

A15U18

DS6

RAM

A15U15

DS7

RAM

A15U17

DSB

RAM

A15U14

DS9*

ROM

A15U19

DSlO*

ROM

A15U16

DSll

ROM

A15U39

DS12

ROM

A15U37

DS13

ROM

A15U40

DS14

ROM

A15U38

DS15t

RAM

Power Supply (VRAM)

k A15U16 and A15U19 are loaded when 128K ROMs (set of 6) are installed.
A15U16 and A15U19 are not loaded when 256K ROMs (set of 4) are used.
. DS15 should normally stay on. If DS15 is not on, suspect the
power supply that supplies VRAM.

Al5 7

HP Part Number 85660-60209
Al5 Controller
Reference
Designation

HP Part C
Number D Qty

Mfr
Code

Description

28480

Mfr Part
Number
85660-60209

Al5

85660-60209

9

1

BOARD ASSEMBLY, CONTROLLER
(SERIAL PREFIXES: 2410A - 2449A)

A15BTl
A15Cl
A15C2
A15C3
A15C4

1420-0331
0160-4554
0160-4554
0160-4554
0160-4554

3
7
7
7
7

1
1
1
1
1

BATTERY 3.6V 1.75A-HR LITHIUM THIONYL
CAPACITOR-FXD .OlUF +-20% SOVDC CER
CAPACITOR-FXD .OlUF +-20% 50VDC CER
CAPACITOR-FXD .OlUF +-20% 50VDC CER
CAPACITOR-FXD .OlUF +-20% 50VDC CER

28480
28480
28480
28480

15-51-04-410-000
0160-4554
0160-4554
0160-4554
0160-4554

A15C5
A15C6
A15C7
A15C8
A15ClO

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

7
7
7
7
7

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.OlUF
.OlUF
.OlUF
.OlUF
.OlUF

+-20% 50VDC
+-20% 50VDC
+-20% 50VDC
+-20% SOVDC
+-20x 50VDC

CER
CER
CER
CER
CER

28480
28480
28480
28480
28480

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

A15Cll
A15C12
A15C13
A15C15
A15C17

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

7
7
7
7
7

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.OlUF
.OlUF
.OlUF
.OlUF
.OlUF

+-20%
+-20%
+-20%
+-20%
+-20%

50VDC
50VDC
50VDC
50VDC
SOVDC

CER
CER
CER
CER
CER

28480
28480
28480
28480
28480

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

A15C18
A15C19
A15C20
A15C22
A15C23

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

7
7
7
7
7

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

.OlUF
.OlUF
.OlUF
.OlUF
.OlUF

+-20%
+-20X
+-20%
+-20x
+-20x

50VDC
50VDC
50VDC
50VDC
50VDC

CER
CER
CER
CER
CER

28480
28480
28480
28480
28480

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

A15C24
A15C25
A15C29
A15C30
A15C31

0160-4574
0160-4535
0160-4832
0180-0500
0180-0197

1
4
4
7
8

1
1
1
1
2

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

1OOOPF +-IO% 1OOVDC CER
1UF +-lo% 50VDC CER
.OlUF +-lo% 1OOVDC CER
47UF +-20% ZOVDC TA
2.2UF +-lo% 20VDC TA

28480
28480
28480
28480
56289

0160-4574
0160-4554
0160-4832
0180-0500
150D225X9020A2

A15C32
A15C33
A15C34
A15C35
A15CRl

0180-0552
0180-0197 ,
0160-4801
0160-4833
1901-0620

9
8
7
5
3

1
1
1
1
1

CAPACITOR-FXD 220UF +-20% 1OVDC TA
CAPACITOR-FXD 2.2UF +-lo% EOVDC TA
CAPACITOR-FXD 1OOPF +-5% 1OOVDC CER
CAPACITOR-FXD .022UF +-lo% IOOVDC CER
DIODE-SWITCHING 60V 400MA DO-35

28480
56289
28480
28480
9N171

0180-0552
150D225X9020A2
0160-4801
0160-4833
NDP250

A15CR2
A15CR3
A15CR4
A15DSl
A15DS2

1901-0050
1901-0518
1901-0620
1990-0958
1990-0958

3
8
3
7
7

1
1
1
1
1

DIODE-SWITCHING 80V 200MA 2NS DO-35
DIODE-SM SIG SCHOTTKY
DIODE-SWITCHING 60V 400MA DO-35
LED-LAMP IF=7MA-MAX BVR=5V
LED-LAMP IF=7MA-MAX BVR=5V

28480
28480
9N171
28480
28480

1901-0050
1901-0518
NDP250
1990-0958
1990-0958

A14DS3
A15DS4
A15DS5
A14DS6
A15DS7

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

7
7
7
7
7

1
1
1
1
1

LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP

IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX

BVR=5V
BVR=5V
BVR=SV
BVR=5V
BVR=5V

28480
28480
28480
28480
28480

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

A14DS8
A15DS9
AlSDSlO
A14DSll
A15DS12

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

7
7
7
7
7

1
1
1
1
1

LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP

IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA+iAX
IF=7MA-MAX

BVR=5V
BVR=5V
8VR=5V
BVR=5V
8VR=5V

28480
28480
28480
28480
28480

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

*Indicates factoy-selected value

8.5660-60209 Parts List
Page 1 of 4

HP Part Number 85660-60209
A15 Controller
Reference
Designation

HP Part
Number

C

D

Jtty
-

Description

A14DS13
A15DS14
A14DS15
A15El
A15Jl

1990-0958
1990-0958
1990-0957
1251-4787
1251-5926

7
7
6
2
3

1
1
1
1
1

LED-LAMP
LED-LAMP
LED-LAMP
SHUNT-DIP
CONNECTOR

A15J2
A15J3
A15J5
A15Ll
A15L2

1251-5905
1200-0607
1251-5619
9140-0864
08558-80011

8
0
1
1
6

1
1
1
1
1

A15MPl
A15MP2
A15MP3
A15MP4
A15MP5

1400-1267
1251-5177
1480-0073
4040-0749
4040-0753

4
6
6
4
0

A15MP6
A15MP7
A15MP8
A15MP9
AlSMPlO

2200-0139
3050-0105
2190-0003
2260-0001

A1591
A15R2
A15R4

IF=7MA-MAX BVR=5V
IF=7MA-MAX BVR=5V
LUM-INT=lMCD IF=7MA-MAX BVR=5V
8-POSITION
50-PIN M POST TYPE

Mfr
Code

Mfr Part
Number

28480
28480
28480
28480
28480

1990-0958
1990-0958
1990-0957
1251-4787
1251-5926

CONNECTOR 24-PIN M POST TYPE
16-PIN IC SOCKET
CONNECTOR 4-PIN M POST TYPE
COIL 120UH 20%
INDUCTOR BLUE COIL

28480
28480
28480
28480
28480

1251-5905
1200-0607
1251-5619
9140-0864
08558-80011

1
2
2
1
1

HOLDER BATTERY .531-.656 DIA
CONNECTOR SINGLE PIN .031 IN
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU
EXTR-PC BD BRN POLYC .062-BD-THKNS
EXTR-PC BD GRN PDLYC .062-BD-THKNS

91833
28480
28480
28480
28480

91
1251-5177
1480-0073
4040-0749
4040-0753

4
6
8
5

1
1
1
1

NOT ASSIGNED
SCREW-MACH 4-40 .25-IN-LG PAN-HD POZI
WASHER-FL MTLC NO. 4 .125-IN-ID
WASHER-LK HLCL ND. 4 .115-IN-ID
NUT-HEX-DBL-CHAM 4-40-THD .094-IN-THK

28480
28480
28480
28480

2200-0139
3050-0105
2190-0003
2260-0001

1853-0281
D698-7272
3698-3157

9
1
3

1
1
1

TRANSISTOR PNP 2N2907A $1 TO-18 PD=4OOMW
RESISTOR 31.6K 1% .05W F TC=O+-100
RESISTOR 19.6K 1% .125W F TC=O+-100

04713
24546
24546

2N2907A
C3-l/8-TO-3162-F
C4-l/8-TO-1962-F

A15R5
A15R6
A15R7
A15R8
A15R9

3698-3152
0698-3260
0757-0280
0757-0465
0757-0442

8
9
3
6
9

1
1
1
1
1

RESISTOR 3.48K 1% .125W F TC=O+-100
RESISTOR 4641: 1% .125W F TC=O+-100
RESISTOR 1K 1% .125W F TC=O+-100
RESISTOR 1OOK 1% .125W F TC=O+-100
RESISTOR 10K 1% .125W F TC=O+-ID0

24546
28480
24546
24546
24546

C4-l/8-TO-3481-F
0698-3260
C4-l/8-TO-1001-F
C4-l/8-TO-1003-F
C4-l/8-TO-1002-F

A15RlO
A15Rll
A15R12
A15R13
A15R14

0698-3260
0757-0442
0698-3260
0698-3440
0757-0401

9
9
9
7
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

464K 1% .125W
10K 1% .125W
4641: 1% .125W
196 1% .125W
100 1% .125W

28480
24546
28480
24546
24546

0698-3260
C4-l/8-TO-1002-F
0698-3260
C4-l/8-TO-196R-F
C4-l/8-TO-101-F

A15R15
A15R16
A15R17
A15R18
A15R19

0757-0421
0698-3151
0757-0428
0757-0280
0698-3155

4
7
1
3
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

825 1% .125W F TC=O+-100
2.87K 1% .125W F TC=O+-100
1.62K 1% .125W F TC=O+-100
1K 1% .125W F TC=O+-100
4.64K 1% .125W F TC=O+-100

A15R20
A15SWl
A15TPl
A15TP2
A15TP3

3698-3152
3101-2197
1251-8096
1251-8616
3360-1682

8
9
4
4
0

1
1
1
1
1

A15TP4
A15Ul
A15U2
A15U3
A15U4

0360-1682
1810-0446
1810-0446
1810-0446
1820-1197

0
8
8
8
9

1
1
1
1
1

F TC=O+-100
F TC=O+-100
F TC=O+-100
F TC=O+-100
F TC=O+-100

24546
24546
24546
!4546
24541

C4-l/8-TO-825R-F
C4-l/8-TO-2871-F
C4-l/8-TO-1621-F
,4-l/8-TO-1001-F
C4-l/8-TO-4641-F

RESISTOR 3.48K 1% .125W F TC=O+-100
SWITCH-RKR DIP-RKR-ASSY 6-1A .05A 30VDC
HEADER ASSY 7PIN
HEADER ASSY 4PIN
TERMINAL-STUD SGL-TUR PRESS-MTG

24541
28480
28480
28480
28480

C4-l/8-TO-3481-F
3101-2197
1251-8096
1251-8616
0360-1682

TERMINAL-STUD SGL-TUR PRESS-MTG
NETWORK-RES 8-SIP 1.5K OHM X 7
NETWORK-RES 8-SIP 1.5K OHM X 7
NETWORK-RES 8-SIP 1.5K OHM X 7
IC GATE TTL LS NAND QUAD 2-INP

28480
11236
11236
11236
01295

0360-1682
750-81-1.5K
750-81-1.5K
750-81-1.5K
SN74LSDON

-

8X60-60209 Parts List
Page 2 of 4

*Indicates facto y-selected value

HP Part Number 85660-60209
Al5 Controller
Reference
Designation

HP Part
Number

Mfr
Code

Mfr Part
Number

31

Description

1
1
1
1
1

IC BFR TTL ALS OR QUAD 2-INP
IC-GENERAL PURPOSE INTERFACE BUS ADAPTER
IC INV TTL LS HEX I-INP
IC DCDR TTL LS 3-TO-8-LINE 3-INP
IC-PARALLEL INTERFACE/TIMER/8MHZ/MC68ODO

28480
28480
01295
01295
28480

1820-3401
1820-2551
SN74LS04N
SN74LS138N
1820-3449

01295
01295
01295
01295
28480

SN74LS373N
SN74LS374N
SN74LS32N
SN74LSllN
1818-3183

28480
28480
28480
28480

1818-3305
1818-3183
1818-3305
1818-3183

A15U5
A15U6
A15U7
A15U8
A15U9

1820-3401
1820-2551
1820-1199
1820-1216
1820-3449

A15UlO
A15Ull
A15U12
A15U13
A15U14

1820-2102
1820-1997
1820-1208
1820-1203
1818-3183

8
7

3
e
2

1
1
1
1
1

IC
IC
IC
IC
IC

A15U14
A15U15
A15U15
A15U17

1818-3305
1818-3183
1818-3305
1818-3183

C
2
C
2

0
1
0
1

4LTERNATE - IC CMOS
IC CMOS 65536 (64K)
ALTERNATE - Ic CMOS
Ic CMOS 65536 (64~)

A15U17
A15U18
A15U18
A15U20

1818-3305
1818-3183
1818-3305
5180-2330

0
2
0
0

0
1
0
1

ALTERNATE-Ic CMOS 65536 (64~) STAT RAM
Ic CMOS 65536 (64~) STAT RAM 150-NS 3-s
ALTERNATE-IC CMOS 65536 (64~) STAT RAM
IC16R4 PAL PRGMD

28480
28480
28480
28480

1818-3305
1818-3183
1818-3305
5180-2330

A15U21
A15U22
A15U23
A15U24
A15U25

1810-0205
1820-2024
1810-0394
1820-1851
1810-0205

7
3
5
2
7

1
1
1
1
1

VETWORK-RES 8-SIP4.7K OHM X 7
IC DRVR TTL LS LINE DRVR OCTL
VETWORK-RES 8-SIP6.8K OHM X 7
IC ENCDR TTL LS
YETWORK-RES 8-SIP4.7K OHM X 7

01121
01295
01121
01295
01121

208A472
SN74LS244N
208A682
SN74LS148N
208A472

A15U26
A15U27
A15U28
A15U29
A15U30

1820-2505
1820-3173
1820-1281
1810-0205
1820-2483

5
5
2
7
8

1
1
1
1
1

IC-MPU; CLK FREQ=8MHZ, INSTRUCTION
IC FF CMDS/74HC J-K NEG-EDGE-TRIG
IC DCDR TTL LS 2-TO-4-LINE DUAL L-INP
VETWORK-RES 8-SIP4.7K OHM X 7
IC RCVR TTL LS BUS OCTL

28480
28480
01295
01121
01295

1820-2505
1820-3173
SN74LS139N
208A472
SN75161N

A15U31
A15U32
A15U33
A15U34
A15U35

1820-3431
1820-2675
1810-0279
1820-1997
1820-1112

8
0
5
7
8

1
1
1
1
1

[C TRANSCEIVER TTL S INSTR-BUS IEEE-488
[C RCVR TTL LS BUS OCTL
IETWORK-RES lo-SIP 4.7K OHM X 9
[C FF TTL LS D-TYPE POS-EDGE-TRIG PRL-IN
IC FF TTL LS D-TYPE POS-EDGE-TRIG

28480
01295
01121
01295
01295

1820-3431
SN74LS646N
210A472
SN74LS374N
SN74LS74AN

A15U36
A15U37
A15U38
A15U39
A15U40

1820-2675
35660-80053
35660-80055
35660-80054
35660-80056

0
3
5
4
6

1
1
1
1
1

[C RCVR TTL LS BUS OCTL
IPROM PRGMD U37
IPROM PRGMD U38
lPRDM PROG U39
iPROM PRGMD U40

01295
28480
28480
28480
28480

SN74LS646N
85660-80053
85660-80055
85660-80054
85660-80056

A15U41
A15U42
A15U43
A15U44
A15U45

L810-0344
35660-80070
1826-0759
1810-0205
L820-3562

5
4
9
7
6

1
1
1
1
1

IETWORK-RES lo-SIP6.8K OHM X 9
[Cl618 PAL PRGMD
[C COMPARATOR GP QUAD 14-DIP-C PKG
IETWORK-RES 8-SIP4.7K OHM X 7
[C BFR TTL ALS INV HEX

01121
28480
04713
01121
28480

210A682
85660-80070
LM339J
208A472
1820-3562

A15U46
A15U47
A15U48
A15W2

1810-0205
1820-1208
1826-0393
~159-0005

7
3
7
D

1
1
1
1

IETWORK-RES 8-SIP4.7K OHM X 7
[C GATE TTL L8 OR QUAD 2-INP
iC V RGLTR-ADJ-PDS 1.2/37V TO-220 PKG
[ESISTOR-ZERO OHMS 22 AWG LEAD DIA

01121
01295
27014
28480

208A472
SN74LS32N
LM317T
8159-0005

LCH TTL LS D-TYPE OCTL
FF TTL LS D-TYPE POS-EDGE-TRIG PRL-IN
GATE TTL LS OR QUAD 2-INP
GATE TTL LS AND TPL 3-INP
CMOS 65536 (64K) STAT RAM 150-NS 3-S
65536 (64K) STAT RAM
STAT RAM 150-N'S 3-S
65536 (64~) STAT RAM
STAT RAM 150-NS 3-s

-

*Indicates factoy-selected value

8X60-60209 Parts List
Page 3 of 4

HP Part Number 85660-60209
Al5 Controller
Reference
Designation
A15Yl

HP Part
Number
.813-0196

3Y
1

Description
XTAL-CLOCK-OSCILLATOR

14.7456-MHZ

-

85660-60209 Parts List
Page 4 of 4

*Indicates factoy-selected value

Mfr
Code
28480

Mfr Part
Number
1813-0196

HP Part Number 85660-60245
Al 5 Controller
Reference
Designation

HP Part C
Number D Qty

Mfr
Code

Description

Al5

85660-60245

3

1

BOARD ASSEMBLY, CONTROLLER
(SERIAL PREFIX: 2503~)

A15BTl
A15Cl
A15C2
A15C3
A15C4

1420-0331
0160-4554
0160-4554
0160-4554
0160-4554

3
7
7
7
7

1
1
1
1
1

BATTERY 3.68V
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

A15C5
A15C6
A15C7
A15C8
A15ClO

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

7
7
7
7
7

1
1
1
1
1

A15Cll
A15C12
A15C13
A15C15
A15C17

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

7
7
7
7
7

A15C18
A15C19
A15C20
A15C22
A15C23

0160-4554
0160-4554
0160-4554
0160-4554
0160-4554

A15C24
A15C25
A15C29
A15C30
A15C31

Mfr Part
Number

28480

85660-60245

1.75A-HR LITHIUM THIONYL
O.OluF 50 VDC +-20x CER
O.OluF 50 VDC +-20% CER
O.OluF 50 VDC +-20% CER
O.OluF 50 VDC +-20% CER

04222
04222
04222
04222

15-51-04-410-000
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

O.OluF
O.OluF
O.OluF
O.OluF
O.OluF

50
50
50
50
50

VDC
VDC
VDC
VDC
VDC

+-20%
+-20%
+-20x
+-20%
+-20%

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

O.OluF
O.OluF
O.OluF
O.OluF
O.OluF

50
50
50
50
50

VDC
VDC
VDC
VDC
VDC

+-20%
+-20%
+-20%
+-20x
+-20%

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SAlOSClOSMAAH

7
7
7
7
7

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

O.OluF
O.OluF
O.OluF
O.OluF
O.OluF

50
50
50
50
50

VDC
VDC
VDC
VDC
VDC

+-20%
+-20%
+-20%
+-20%
+-20%

CER
CER
CER
CER
CER

04222
04222
04222
04222
04222

SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SA105C103MAAH
SAlD5C103MAAH

0160-4574
0160-4535
0160-4801
0160-4832
0160-4808

1
4
7
4
4

1
1
1
1
1

CAPACITOR-FXD 1OOOPF +-IO% 1OOVDC CER
CAPACITOR-FXD 1UF +-10x 50VDC CER
CAPACITOR-FXD 1OOPF +-5% 1OOVDC CER 0+-3
CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
CAPACITOR-FXD 470PF +-5% 1OOVDC CER 0+-3

04222
04222
04222
04222
04222

SAlOlC102KAAH
SR305C105KAAH
SA102AlOlJAAH
SAlOlC103KAAH
SAlOlA471JAAH

A15C32
A15C34
A15CR3
AlSDSl
A15DS2

0180-2207
0160-4801
1901-0518
1990-0958
1990-0958

5
7
8
7
7

1
1
1
1
1

CAPACITOR-FXD lOOUF+-10% 1OVDC TA
CAPACITOR-FXD 1OOPF +-5% 1OOVDC CER 0+-3
DIODE-SCHOTTKY SM SIG
LED-LAMP IF=7MA-MAX BVR=5V
LED-LAMP IF=7MA-MAX BVR=5V

56289
04222
28480
28480
28480

150D107X901DR2-DYS
SA102AlDlJAAH

A15DS3
A15DS4
A15DS5
A15DS6
A15DS7

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

7
7
7
7
7

1
1
1
1
1

LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP

IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX

8VR=5V
BVR=5V
BVR=5V
BVR=SV
BVR=5V

28480
28480
28480
28480
28480

HLMP-1700
HLMP-1700
HLMP-1700
HLMP-1700
HLMP-1700

A15DS8
A15DS9
A15DSlO
A15DSll
A15DS12

1990-0958
1990-0958
1990-0958
1990-0958
1990-0958

7
7
7
7
7

1
1
1
1
1

LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP
LED-LAMP

IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX
IF=7MA-MAX

BVR=5V
BVR=5V
BVR=SV
BVR=5V
BVR=5V

28480
28480
28480
28480
28480

HLMP-1700
HLMP-1700
HLMP-1700
HLMP-1700
HLMP-1700

415DS13
415DS14
415El
41551
41552

1990-0958
1990-0958
1251-4787
1251-5926
1251-5905

7
7
2
3
8

1
1
1
1
1

LED-LAMP IF=7MA-MAX BVR=5V
LED-LAMP IF=7MA-MAX 8VR=5V
SHUNT-DIP 8 POSITION DUAL INLINE PKG
CONN-POST TYPE .lOO-PIN-SPCG 50-CONT
CONN-POST TYPE .lOO-PIN-SPCG 24-CONT

28480
28480
00779
18873
18873

HLMP-1700
HLMP-1700
435704-8
67997-650
67997-624

*Indicates factoy-selected value

HLMP-1700
HLMP-1700

8566060245 Parts List
Page 1 of 3

HP Part Number 85660-60245
A15 Controller

Reference
Designation

HP Part
Number

c
c

Description

a!
-

Mfr
Code

Mfr Part
Number

A15J3
A15J5
A15Ll
Al5MPl
A15MP3

1200-0607
1251-5619
9140-0875
1400-1267
1480-0073

(
I
.!
1
E

1
1
1
1
2

16-PIN IC SOCKET
CONN-POST TYPE .lOO-PIN-SPCG 4-CONT
INDUCTOR 80uH 10%
HOLDER-BAT .531-.656-DIA FOR AA CELLS
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU

00779
18873
28480
91833
72962

641600-l/TUBED 2-641600
68000-604
9140-0875
91
99-012-062-0250

A15MP4
A15MP5
Al 5MP6
A15MPll
Al5Ql

4040-0749
4040-0753
0361-0026
1200-0567
1854-0477

4
c
E
1
7

1
1
1
1
1

EXTR-PC BD BRN POLYC .062-IN-BD-THKNS lEXTR-PC BD GRN POLYC .D62-IN-BD-THKNS lRIVET-SEMITUB DVH .089DIA .125LG
SOCKET-IC 28-CONT DIP DIP-SLDR
TRANSISTOR NPN 2N2222A $1 TO-18 PD=500MW

12014
00779
04713

R-4008-1/8
2-641605-l
2N2222A

A1592
A15R2
A15R3
A15R4
A15R5

1853-0213
0757-0442
0698-3157
0698-3260
0757-0280

7
9
3
9
3

1
1
1
1
1

TRANSISTOR PNP 2N4236 $1 TO-5 PD=lW
RESISTOR 10K +-1% .125W TF TC=O+-100
?ESISTOR 19.6K 1% .125W TF TC=O+-100
?ESISTOR 4641: 1% .125W TF TC=O+-100
iESISTDR 1K +-1% .125W TF TC=O+-100

04713
2M627
2M627
2M627
2M627

2N4236
CRB14 OR
CR814 OR
CRB14 OR
CRB14 OR

CRB25
CRB25
CR825
CRB25

A15R6
A15R7
A15R8
A15R9
A15RlO

0757-0442
D757-0442
3757-0442
3698-3260
3757-0280

9
9
9
9
3

1
1
1
1
1

7ESISTOR
7ESISTOR
1ESISTOR
7ESISTDR
7ESISTOR

10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
464K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

2M627
2M627
2M627
2M627
2M627

CRB14
CRB14
CR814
CRB14
CRB14

OR
OR
OR
OR
OR

CRB25
CR825
CR825
CR825
CRB25

A15Rll
A15R12
A15R13
A15R14
A15R18

3757-0280
3757-0401
3698-3440
3757-0401
1757-0280

3
0
7
0
3

1
1
1
1
1

7ESISTOR
7ESISTOR
IESISTDR
1ESISTOR
?ESISTOR

1K +-1% .125W TF TC=O+-100
100 +-I% .125W TF TC=O+-100
196 1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100

2M627
2M627
2M627
2M627
2M627

CRB14
CRB14
CRB14
CRB14
CRB14

OR
OR
OR
OR
OR

CRB25
CR825
CR825
CRB25
CRB25

A15R19
A15R21
A15SWl
A15TPl
A15TP2

1698-3155
1698-7212
SlOl-2197
1252-0569
1251-8427

1
9
9
2
5

1
1
1
1
1

IESISTOR 4.64K 1% .125W TF TC=O+-100
2ESISTOR 100 +-1% .05W TF TC=O+-100
SWITCH-DIP RKR 6-1A 0.05A 30VDC
:DNN-POST TYPE .150-PIN-SPCG 9-CDNT
:DNN-POST TYPE .150-PIN-SPCG 5-CONT

2M627
19701
81073
00779
00779

CRB14 OR CRB25
50635
76YY2346S
87221-8
87221-4

A15Ul
A15U2
A15U3
A15U4
A15U5

1810-0446
1810-0446
L810-0446
L820-1197
1820-3401

8
8
8
9
2

1
1
1
1
1

IETWORK-RES 8-SIP 1.5K OHM X 7
JETWORK-RES 8-SIP 1.5K OHM X 7
JETWORK-RES 8-SIP 1.5K OHM X 7
[C GATE TTL LS NAND QUAD 2-INP
[C BFR TTL ALS OR QUAD 2-INP

11236
11236
11236
01295
01295

750-81
750-81
750-81
SN74LSOON
SN74ALSlD32AN

A15U6
A15U7
A15U8
A15U9
A15UlO

1820-2548
1820-1199
1820-1216
1820-3449
1820-2102

6
1
3
8
8

1
1
1
1
1

[C-GENERAL PURPOSE INTERFACE BUS ADAPTER
[C INV TTL LS HEX l-INP
[C DCDR TTL LS 3-TO-8-LINE 3-INP
[C-PARALLEL INTERFACE/TIMER/8MHZ/MC68000
[C LCH TTL LS D-TYPE OCTL

01295
01295
01295
04713
01295

TMS9914ANL
SN74LS04N
SN74LS138N
MC68230L8
SN74LS373N

A15Ull
A15U12
A15U13
A15U14
A15U14

1820-1997
1820-1208
1820-1203
~818-3183
.818-3305

1
1
1
1
0

[C FF TTL LS D-TYPE POS-EDGE-TRIG PRL-IN
[C GATE TTL LS OR QUAD 2-INP
IC GATE TTL LS AND TPL 3-INP
IC CMOS 65536 (64K) STAT RAM 150-NS 3-S
ALTERNATE-Ic CMOS 65536 (64~) STAT RAM

01295
01295
01295
SD545
SO562

SN74LS374N
SN74LS32N
SN74LSllN
UPD4364C-15L
TC5565APL-15

A15U15
A15U15
A15U17

.818-3183
.818-3305
.818-3183

1
0
1

:c CMOS 65536 (64~) STAT RAM 150-NS 3-S
ALTERNATE-Ic CMOS 65536 (64~) STAT RAM
.C CMOS 65536 (64K) STAT RAM 150-NS 3-S

so545
SO562
so545

UPD4364C-15L
TC5565APL-15
UPD4364C-15L

-

8566060245 Parts List
Page 2 of 3

*Indicates facto y-selected value

HP Part Number 85660-60245
Al 5 Controller
Reference
Designation
A15U17
A15U18

II
I

HP Part
Number

QtY
I

Description

Mfr Part
Number

1818-3305
1818-3183

0 ALTERNATE-IC CMOS 65536 (64~) STAT RAM
1
Ic CMOS 65536 (64~) STAT RAM 150-NS 3-s

TC5565APL-15
UPD4364C-15L

A15U18
A15U20
A15U21
A15U22
A15U23

1818-3305
5180-2330
1810-0205
1820-2024
1810-0394

0 ALTERNATE-IC CMOS 65536 (64~) STAT RAM
1
IC 16R4 PAL PRGMD
1
NETWORK-RES 8-SIP 4.7K OHM X 7
1
IC DRVR TTL LS LINE DRVR OCTL
1
NETWORK-RES 8-SIP 6.8K OHM X 7

TC5565APL-15
5180-2330
750-81
SN74LS244N
750-81

A15U24
A15U25
A15U26
A15U27
A15U28

1820-1851
1810-0205
1820-3532
1820-3173
1820-1281

1
1
1
1
1

IC ENCDR TTL LS
NETWORK-RES 8-SIP 4.7K OHM X 7
IC-16 BIT MICROPROCESSOR /8 MHZ
IC FF CMOS/74HC J-K NEG-EDGE-TRIG PRESET
IC DCDR TTL LS 2-TO-4-LINE DUAL

SN74LS148N
750-81
MC68000P8
MC74HC112N
SN74LS139AN

A15U29
A15U30
A15U31
A15U32
A15U33

1810-0205
1820-3513
1820-3431
1820-2675
1810-0279

1
1
1
1
1

NETWORK-RES 8-SIP 4.7K OHM X 7
IC-INTERFACE XCVR BCD UP/DOWN INSTRUMENT
IC-INTERFACE XCVR BCD UP/DOWN INSTRUMENT
IC TRANSCEIVER TTL LS BUS OCTL
NETWORK-RES lo-SIP 4.7K OHM X 9

750-81
DS75161AN
DS75160AN
SN74LS646NT
750-101

A15U34
A15U35
A15U36
A15U37
A15U38

1820-1997
1820-1112
1820-2675
85660-80185
85660-80187

1
1
1
1
1

IC FF TTL LS D-TYPE PDS-EDGE-TRIG PRL-IN
IC FF TTL LS D-TYPE PDS-EDGE-TRIG PRESET
IC TRANSCEIVER TTL LS BUS OCTL
EPROM PRGMD
EPROM PRGMD

SN74LS374N
SN74LS74AN
SN74LS646NT
85660-80185
85660-80187

A15U39
A15U40
A15U41
A15U42
A15U43

85660-80186
85660-80188
1810-0344
85660-80070
1826-0759

1
1
1
1
1

EPROM PRGMD
EPROM PRGMD
NETWORK-RES lo-SIP 6.8K OHM X 9
IC1618 PAL PRGMD
IC COMPARATOR GP QUAD 14-DIP-C PKG

85660-80186
85660-80188
750-101
85660-80070
LM339J

A15U44
A15U45
A15U46
A15U47
A15Yl
A15Yl

1810-0205
1820-3562
1810-0205
1820-1208
1813-0196
1813-0129

NETWORK-RES 8-SIP 4.7K OHM X 7
IC BFR TTL ALS INV HEX
NETWORK-RES 8-SIP 4.7K OHM X 7
IC GATE TTL LS OR QUAD 2-INP
CLOCK-OSCILLATOR-CRYSTAL 14.7456-MHZ
CLOCK-OSCILLATOR-XTAL 14.7456-MHZ 0.01%
(ALTERNATE PART FOR 1813-0196)

*Indicates factoy-selected value

750-81
SN74ALS1005N
750-81
SN74LS32N
1813-0196
HS-lOO( 14.7456MHZ)

8566060245 Parts List
Page 3 of 3

( P / O A23W7)
J8

XA15Pl

XA12Pl

A23 Motherboard Instrument Bus, Interconnect Diagram

Al6
Al6 Scan Generator, Circuit Description
The Al6 Scan Generator provides tuning voltage ramps to the IF-Display Section (SCAN
OUT and AUX OUT) and scaled ramps to the AlOA8 PLL2 Discriminator and A19 DAC.
The SCAN OUT ramp to the IF-Display Section is used for the horizontal sweep signal for
the CRT display update, and the AUX OUT ramp is used by the A4Al Video Processor to
maintain video information in proper correlation with the horizontal sweep and frequency
tuning.
The scaled ramp to the AlOA8 PLL2 Discriminator is used to scale the tuning current ramp
(VCO TUNE) used to tune the VCO on the AlOA5 PLL2 VCO.

Scan Time Register @ and Sweep Time DAC @
Scan time information is placed in the scan time registers U26, U27, and U29. This
information comes from the front panel via the Instrument Bus. Processing of this
information is done on the Al2 Front-Panel Interface and Al5 Controller. The information is
clocked into the Scan Time Register by control signal LSTS (Low = Scan Time Strobe). This
control signal becomes active (low) whenever the selected scan time is changed. A positive dc
voltage is developed by U8 corresponding to the programmed sweep time information applied
to the DAC U28. This voltage is between +0.7 V and +7.0 V.

Ramp Generator @
The dc voltage level provided by U8 causes a constant current to flow through the proper
scaling resistor, through Virtual Ground and Q5 to the Ramp Capacitor Cl. The scaling
resistor is selected by the programmed sweep information from the front panel the same as is
the sweep time. This information turns on one of the switch drivers U20A through U20D,
which turns on one and only one of the scaling resistor switches Ql, Q2, Q3, or Q4, to place
the proper scaling resistors in the charging current path for Cl. If the selected sweep time
is slower than 200 seconds, none of the scaling resistors are switched in. For 0.0 to 2.5 GHz
frequency span, the waveform on Ramp Capacitor Cl is a positive going ramp from -5.0 Vdc
to -2.0 Vdc with a 3 ms reset time. Ramp Buffer U3 amplifies and shifts the level of the
ramp so that the SCAN OUT is a 0.0 to +lO.O V dc ramp.

Al6

1

Ramp Control Logic 0, Switch Driver @, Ramp Reset Switch @I,
and Ramp Reset Amplifier @
The sweep ramp is formed by alternately charging and discharging Cl, according to the
following cycle.
Control line HSWP resets the sweep (High = Sweeping). When HSWP goes low (determined
by IF-Display Section), LHOLD (U5C pin 8) goes low, turning on CRl. When CR1 is on,
charging current bypasses ramping capacitor Cl and instead passes to ground via CRl.
Ramping capacitor Cl stops charging.
Ramping capacitor Cl holds its charge until LANR, from Front-Panel Interface Assembly
A12, goes low (Low = Analog Reset). When LANR goes low, LHOLD goes high, turning
CR1 off, removing the current bypass for ramping capacitor Cl. RESET/GO (U5D pin 11)
also goes high when LANR goes low, which turns Q9 off. Q7 and Q6 then turn on, providing
a discharge path for Cl through Ramp Reset Amplifier U2. Test point 3 remains at ground
potential until HSWP again goes high, starting the cycle again.

Frequency Span Register (ij and Span Width DAC @
The Span Width DACs U17 and UlO provide a negative scan ramp to be scaled by the
Integer Number Attenuator. The output of this negative-going ramp is between 0 and -10
V. The amplitude of the ramp is dependent on the span of the instrument. Frequency span
information arrives on the Instrument Bus and is stored in registers Ul and U18. This
information is clocked into Frequency Span registers U16 and U18 whenever control line LSAS
(Low = Scan Attenuator Strobe) goes low.

Integer Number Attenuator @, Band Decoder @, Switch Drivers @I
The Integer Number Attenuator scales the negative ramp at TP5 to the harmonic band being
swept. This division is by l/2 for Band C, l/3 for Band D, and l/4 for Band E. In Band B,
the ramp is not scaled so it remains unchanged.
The division is performed by R48 through R50. If in Band B, only R80 is in the circuit. In
Band C, R81 is added. In Band D, R82 is added. In Band E, R83 is added. These resistors
are switched in by transistors Q15, Q13, and Q14, which are driven by drivers U19A, U19C,
and UlOB respectively. The information necessary to determine when and which resistors to
switch in comes form the Al2 Front-Panel Interface (SAT 1 and SAT 2) and is decided by
Band Decoder P.

Aux Out Register 0, Aux Out Offset DAC 0, and Aux Out Amplifier @I
The AUX OUT signal is a positive-going ramp voltage from the scan generator which is
amplified by U9B. This output is always 0 to +lO V regardless of the selected frequency span.
If more than one harmonic band is swept, there is a small ramp output from the ramp
generator E (TP3) for each band with each ramp resetting to 0 V. To combine these ramps,
Aux Out Offset DAC U22 and U9A provide a voltage to hold the Aux Out Amplifier input at
a dc level at the end of each ramp. The output therefore is a continuous ramp voltage from
0 to +lO V. This voltage is programmed into the DAC U22 by the span information from
the Instrument Bus. This information is stored in Aux Out Register U23 and U21, being
clocked in by control line LAOS (Low = Aux Out Strobe). This control line is from the Al2

2 Al6

Front-Panel Interface and is enabled (pulled low) whenever front-panel key selections indicate
that more than one harmonic board is being swept.

Voltage Reference @
Voltage Reference U7 and associated circuitry provide a stable -7 V dc reference voltage for
both the Sweep Time and Aux Out Offset DACs.

Scan Test Circuit @
The control signal HSWP (High = Sweeping) is normally pulled low indicating the end of a
sweep by the A3Al Trigger in the IF-Display Section. This signal can also be pulled low by
the Scan Test Circuit for the purpose of testing the scan circuitry.
If the scan ramp should exceed +ll V, this overvoltage is detected by UllD which triggers
one-shot multivibrator U6. U6 generates a 50 ms pulse on the HSWP line. When this pulse
goes low, the Al5 Controller “thinks” that the sweep has ended and performs its update
functions. When the pulse goes high again (after 50 ms), the Al5 Controller “thinks” a new
sweep has begun. This enables the sweep circuitry to function without the IF-Display Section,
or when a circuit malfunction exists, thus aiding troubleshooting.

Scan Reset Amplifier @
The Scan Reset Amplifier supplies negative feedback that holds SCAN OUT (Q12 emitter) at
ground potential during retrace.
For Scan Generator (HP part number 85660-60198): Fixed-gain amplifier U13 amplifies
any potential at its noninverting input, pin 3. During retrace, LSAMPLE is low, and
sample-and-hold device U14 tracks the U13 output, charging C20.
This error voltage at C20 is divided by R64, R65, and R66, and is summed with the Span
Width DAC output at U12 pin 2. The amplified and inverted output of U12 cancels the
potential at SCAN OUT that produced the error voltage across C20.
When the sweep commences, HSWP and LSAMPLE are high. The input to U14 is held on
C20 for the duration of the sweep.

Al6 3

RAW GENERATOR

AUX GUT

S”MM I NG
;‘A”, OUT

cFL

INSTRUMENT
BUS
1oEm-1cr313

SCAN TEST
T-SHOT
MULTlVlBRATOR
q

1J-L

J2

l SCAN OUT
J3
3 SCAN OUT

Figure 1. Al6 Scan Generator, Simplified Block Diagram

4 Al6

Reference
Designation

HP Part
Number

Al6

85660-60198

A16Cl
A16C2
A16C3
A16C4
A16C5

0160-5609
0160-2208
0160-4892
0180-0116
0180-0228

A16C6
A16C7
A16C8
A16C9
A16ClO

c
c

a
-

Al 6 Scan Generator
Description

Mfr
Code

Mfr Part
Number

1

BOARD ASSEMBLY, SCAN GENERATOR
(SERIAL PREFIXES: 2410~-2430~)

28480

85660-60198

r

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

84411
09023
56289
56289
56289

HEW-687
CD15FD331JO3
2C37Z5U105M025C
150D685X903582
1500226X901582

0180-0229
0160-4005
0160-4892
0160-4892
0160-4892

7
3
E
E
E

1
1
1
1
1

CAP-FXD 33uF 10 V
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF

TA
+-20%
+-20%
+-20x
+-20%

1OOVDC CER
25VDC CER
25VDC CER
25VDC CER

56289
04222
56289
56289
56289

1500336X9OlOB2
SR401E105MAAH
2C37Z5U105M025C
2C37Z5U105M025C
2C37Z5U105M025C

A16Cll
A16C12
A16C13
A16C14
A16C15

0160-4892
0160-4005
D160-4892
3160-4892
3160-4005

6
3
6
6
3

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

1UF
1UF
1UF
1UF
1UF

+-20%
+-20%
+-20%
+-20%
+-20%

25VDC CER
1OOVDC CER
25VDC CER
25VDC CER
1OOVDC CER

56289
04222
56289
56289
04222

2C37Z5U105M025C
SR401E105MAAH
2C37Z5U105M025C
2C37Z5U105M025C
SR401E105MAAH

A16C16
A16C17
A16C18
A16C19
A16C20

0160-4892
0160-4892
0160-4005
0160-4892
0160-3787

F
t

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

1UF
1UF
1UF
1UF
1UF

+-20%
+-20%
+-20%
+-20%
+-lo%

25VDC CER
25VDC CER
1OOVDC CER
25VDC CER
50VDC MET-POL'I

56289
56289
04222
56289
84411

2C37Z5U105M025C
2C37Z5U105M025C
SR401E105MAAH
2C37Z5U105M025C
HEW-249

A16C21
A16C22
A16C23
A16C25
A16C26

0160-4892
0160-4892
0160-3447
0160-4892
0180-1743

f
f
6

CAPACITOR-FXD
CAPACITOR-FXD
CAP-FXD 47OpF
CAPACITOR-FXD
CAPACITOR-FXD

1UF +-20% 25VDC CER
1UF +-20% 25VDC CER
1 kV
1UF +-20% 25VDC CER
O.lUF+-10% 35VDC TA

56289
56289

E
i

1
1
1
1
1

56289
56289

2C37Z5U105M025C
2C37Z5U105M025C
808(1KV) X5E 471K
2C37Z5U105M025C
1500104X9035A2-DYS

A16C27
A16C28
A16C29
A16C30
A16C31

0160-3448
0160-3448
0160-4005
0160-4005
0160-4005

E
E
3
3
3

1
1
1
1
1

CAP-FXD 1OOOpF 1
CAP-FXD 1OOOpF 1
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF

04222
04222
04222

808-548 X5E 102K
808-548 X5E 102K
SR401E105MAAH
SR401E105MAAH
SR401E105MAAH

A16C32
A16C33
A16C34
A16C35
A16C36

0160-4005
0160-4005
D160-4005
D160-4892
3160-4005

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

04222
04222
04222
56289
04222

SR401E105MAAH
SR401E105MAAH
SR401E105MAAH
2C37Z5U105M025C
SR401E105MAAH

A16C37
A16C38
A16C39
A16C40
A16CRl

3160-4892
3160-4892
3160-4835
3160-4832
1901-0539

6
6
7
4
3

1
1
1
1
1

CAPACITOR-FXD 1UF +-20% 25VDC CER
CAPACITOR-FXD 1UF +-20% 25VDC CER
CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
DIODE-SCHDTTKY SM SIG

56289
56289
04222
04222
28480

2C37Z54105M025C
2C37Z5U105M025C
SA115C104KAAH
SAlOlC103KAAH
1901-0539

A16CR2
A16CR3
A16CR4
A16CR5
A16CR6

1901-0539
1901-0539
1901-0539
1901-0376
1901-0040

3
3
3
6
1

1
1
1
1
1

DIODE-SCHOTTKY SM SIG
DIODE-SCHDTTKY SM SIG
DIODE-SCHOTTKY SM SIG
DIODE-GEN PRP 35V 50MA DO-35
DIODE-SWITCHING 30V 50MA 2NS DO-35

28480
28480
28480
9N171
71468

1901-0539
1901-0539
1901-0539
lN3595

1OUF +-lo% 50VDC MET-PO1
330PF +-5% SOOVDC MICA C
1IJF +-20x 25VDC CER
6.8UF+-10% 35VDC TA
22UF+-10% 15VDC TA

1UF
1UF
1UF
1UF
1UF

kV
kV
+-20% 1OOVDC CER
+-20% 1OOVDC CER
+-20% 1OOVDC CER
+-20%
+-20%
+-20%
+-20%
+-20%

1OOVDC CER
1OOVDC CER
1OOVDC CER
25VDC CER
1OOVDC CER

-

*Indicates factory-selected value

8566060198 Parts List
Page 1 of 4

HP Part Number 85660-60198
Al6 Scan Generator
Reference
Designation

HP Part
Number

A16Jl
A16J2
A16J3
A16J4
A16MP3

1250-0543
1250-0543
1250-0543
1250-0543
1251-2194

a
a
a
a

A16MP4
A16MP6
A16MP7
A16MP9
AlGMPlO

Mfr
Code

Description

BY
-

1

1
1
1
1
2

CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP
CONNECTOR-SGL CONT

1480-0073
4040-0749
4040-0754
2200-0143
2190-0003

1
4
1
C
a

2
1
1
2
2

A16MPll
Al6Ql
A1602
A16Q3
A1694

0380-1194
1855-0020
1855-0020
1855-0020
1855-0020

1
a
a
a
a

A1605
Al6Q6
A1697
Al6Q8
A1699

1855-0082
1855-0082
1855-0082
1854-0404
1853-0281

A16QlO
Al6Qll
A16Q12
A16Q13
A16914

M PC 50-OHM
M PC 50-OHM
M PC 50-OHM
M PC 50-OHM
SKT .OEl-IN-BSC-SZ

Mfr Part
Number

98291
98291
98291
98291
00779

51-053-0349-BE8
51-053-0349-BE8
51-053-0349-BE8
51-053-0349-BE8
3-331272-O

PIN-ROLL .062-IN-DIA .25-IN-LG
EXTR PC BD BRN
EXTR PC BD BLU
SCREW-MACH 4-40 .375-IN-LG PAN-HD POZI
WASHER LOCK, HLCL NO.4 .115-IN-ID

72962
28480
28480
77250
80120

99-012-062-0250
4040-0749
4040-0754

2
1
1
1
1

STANDOFF-RND .594-IN-LG
TRANSISTOR J-FET N-CHAN
TRANSISTOR J-FET N-CHAN
TRANSISTOR J-FET N-CHAN
TRANSISTOR J-FET N-CHAN

00000
04713
04713
04713
04713

ORDER BY DESCRIPTION
SFE793
SFE793
SFE793
SFE793

2
2
2
C
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET P-CHAN D-MODE SI
J-FET P-CHAN D-MODE SI
J-FET P-CHAN D-MODE SI
NPN SI TO-18 PD=360MW
PNP 2N2907A SI TO-18 PD=400MW

04713
04713
04713
04713
04713

2N2907A

1854-0557
1854-0557
1854-0637
1853-0322
1853-0322

4
4
1
9
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN
NPN
NPN
PNP
PNP

TO-18 PD=300MW
TO-18 PD=300MW
TO-5 PD=800MW
TO-46 PD=400MW
TO-46 PD=400MW

01295
01295
04713
04713
04713

A16915
A16Rl
A16R2
A16R4
A16R5

1853-0322
3757-0464
3683-2265
3757-0465
3757-0470

9
5
1
6
3

1
1
1
1
1

TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
RESISTOR 90.9K +-1X .125W TF TC=O+-100
RESISTOR 22M 5% .25W CC TC=-900/+1200
RESISTOR 1OOK +-1% .125W TF TC=O+-100
RESISTOR 162K +-1X .125W TF TC=O+-100

04713
19701
01121
19701
19701

SFR25H
CB2265
SFR25H
SFR25H

A16R6
A16R7
A16R8
A16R9
A16RlO

3698-8827
3698-3450
3698-3459
3698-3153
3698-3161

4
9
8
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1M +-1% .125W TF TC=O+-100
42.2K 1% .125W TF TC=O+-100
383K 1% .125W TF TC=O+-100
3.83K 1% .125W TF TC=O+-100
38.3K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16Rll
A16R12
A16R13
A16R18
A16R19

3698-3446
3698-3153
3757-0416
1757-0442
1757-0438

3
9
7
9
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

383 1% .125W TF TC=O+-100
3.83K 1% .125W TF TC=O+-100
511 +-1% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R20
A16R21
A16R22
A16R23
A16R24

3757-0280
3757-0442
1757-0199
1757-0459
3698-3136

3
9
3
8
8

1
1
1
1
1

RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 10K +-I% .125W TF TC=O+-100
RESISTOR 21.5K +-1% .125W TF TC=O+-100
RESISTOR 56.2K +-1% .125W TF TC=O+-100
RESISTOR 17.8K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R25
A16R27
A16R28

1757-0289
1698-0084
1698-3161

2
9
9

1
1
1

RESISTOR 13.3K +-1% .125W TF TC=O+-100
RESISTOR 2.15K 1% .125W TF TC=O+-100
RESISTOR 38.3K 1% .125W TF TC=O+-100

19701
19701
19701

SFR25H
SFR25H
SFR25H

2N2432A
2N2432A
2N2219A
2N2946A
2N2946A

4-40THD
D-MODE TO-18
D-MODE TO-18
D-MODE TO-18
D-MODE TO-18

SI
SI
SI
SI
SI

-

85660-60198 Parts List
Page 2 of 4

*Indicates factory-selected value

SI
SI
SI
SI

2N2432A
2N2432A
2N2219A

HP Part Number 85660-60198
Al 6 Scan Generator
Reference
Designation

w
-

HP Part
Number

Mfr Part
Number

Mfr
Code

Description

A16R30
A16R31

0698-3160
0757-0289

a
2

1
1

RESISTOR 31.6K 1% .125W TF TC=O+-100
RESISTOR 13.3K +-1% .125W TF TC=O+-100

19701
19701

SFR25H
SFR25H

A16R32
A16R33
A16R34
A16R35
A16R38

0757-1094
0757-0439
0757-0442
0698-3154
0698-3157

9

4
9
0
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.47K +-1% .125W TF TC=O+-100
6.81K +-1X .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R39
A16R40
A16R41
A16R44
A16R45

0698-3158
0757-0442
0698-3153
0699-0307
0757-0442

4
9
9
1
9

1
1
1
1
1

RESISTOR 23.7K 1% .125W TF TC=O+-100
RESISTOR IOK +-1% .125W TF TC=O+-100
RESISTOR 3.83K 1% .125W TF TC=O+-100
RESISTOR 36.75K +-0.1X .lW TF TC=O+-10
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50232
SFR25H

A16R46"
A16R48
A16R49
A16R50
A16R53

0699-0380
0757-0442
0757-0442
0757-0442
0698-3136

0
9
9
9
8

1
1
1
1
1

RESISTOR 73.8741K
RESISTOR 10K +-1X
RESISTOR 10K +-1%
RESISTOR 10K +-1%
RESISTOR 17.8K 1%

28480
19701
19701
19701
19701

0699-0380
SFR25H
SFR25H
SFR25H
SFR25H

Al 6R54
A16R55
A16R56
A16R57
A16R58

0757-0440
0757-0459
0757-0442
0698-3443
0757-0280

7
8
9
r
:

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R59
A16R60
A16R61
A16R62
A16R63

0757-0280
0757-0280
0757-0440
2100-1760
0757-0440

:
?
I
7
7

1
1

RESISTOR 1K +-1%
RESISTOR 1K +-1%
RESISTOR 7.5K 1%
RESISTOR-TRMR 5K
RESISTOR 7.5K 1%

TF TC=O+-100
TF TC=O+-100
F TC=O+-100
SIDE-ADJ l-TRN
F TC=O+-100

19701
19701
24546
28480
24546

SFR25H
SFR25H
C4-l/8-TO-7501-F
2100-1760
C4-l/8-TO-7501-F

A16R64
A16R65
A16R66
A16R67
A16R68

0757-0199
0757-0416
0698-8827
2100-1760
2100-1759

3
7
4
7
4

1
1

RESISTOR 21.5K 1% .125W F TC=O+-100
RESISTOR 511K 1% .125W F TC=O+-100
RESISTOR 1M 1% .125W F TC=O+-100
RESISTOR-TRMR 5K 5% kW SIDE-ADJ l-TRN
RESISTOR-TRMR 2K 5% WW SIDE-ADJ l-TRN

24546
24546
24546

C4-l/8-TO-7501-F
C4-l/8-TO-511R-F
0698-8827
CT-106-4-5K
CT-106-4-2K

A16R70
A16R71
A16R72
A16R73
A16R80

0698-3158
2100-1759
2100-1759
0698-3136
0699-0308

4
4
4
8
2

1
1
1
1
1

RESISTOR 23.7K 1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 5% WW SIDE-ADJ l-TRN
RESISTOR-TRMR 2K 5% WW SIDE-ADJ l-TRN
RESISTOR 17.8K 1% .125W TF TC=O+-100
RESISTOR 24.97K +-0.025% .lW TF TC=O+-5

19701

19701
19701

SFR25H
CT-106-4-2K
CT-106-4-2K
SFR25H
50232

A16R81
A16R82
A16R83
A16R84
A16R86

0699-0308
0699-0308
0699-0308
0757-0440
0757-0346

2
2
2
7
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

24.97K +-0.025% .lW TF TC=O+-5
24.97K +-0.025% .lW TF TC=O+-5
24.97K +-0.025% .lW TF TC=O+-5
7.5K +-1% .125W TF TC=O+-100
10 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
91637

50232
50232
50232
SFR25H
CMF-55-1, T-l

A16R90
A16R91
A16R92
A16R93
A16R94

0698-3136
0757-0199
0757-0442
0698-0084
0698-3162

8
3
9
9
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

17.8K 1% .125W TF TC=O+-100
21.5K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
46.4K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

2

.025%
.125W
.125W
.125W
.125W

.lW
TF
TF
TF
TF

F TC=O+-5
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

7.5K +-1% .125W TF TC=O+-100
56.2K +-1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100
287 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
.125W
.125W
.125W
5% WW
.125W

-

*Indicates facto y-selected value

85660-60198 Parts List
Page 3 of 4

HP Part Number 85660-60198
Al6 Scan Generator
Reference
Designation

HP Part
Number

C

D

Mfr
Code

Mfr Part
Number

3Y
-

Description

1
1
1
1
1

RESISTOR 10K +-1X .125W TF TC=D+-100
RESISTOR l.lK +-1% .125W TF TC=O+-100
RESISTOR 162 +-1% .125W TF TC=O+-100
RESISTOR 1.78K +-1X .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
19701
19701
27264

SFR25H
SFR25H
SFR25H
SFR25H
16-06-0034

A16R95
A16R96
A16R97
A16R98
A16TPl

0757-0442
0757-0424
0757-0405
0757-0278
1251-0600

A16TP2
A16TP3
A16TP4
A16TP5
A16TP6

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A16TP7
A16TP8
A16TP9
A16Ul
A16U2

1251-0600
1251-0600
1251-0600
1826-0601
1826-0471

0
0
0
0
2

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC OP AMP PRCN TO-99 PKG
IC OP AMP LOW-DRIFT TO-99 PKG

SQ
SQ
SQ

27264
27264
27264
06665
06665

16-06-0034
16-06-0034
16-06-0034
OP-16FJ
DP-07CJ SELECTED

A16U3
A16U4
A16U5
A16U6
A16U7

1826-0601
1826-0306
1820-1425
1826-0180
1826-1058

0
2
6
0
3

1
1
1
1
1

IC
IC
IC
IC
IC

OP AMP PRCN TO-99 PKG
COMPARATOR GP QUAD 14-DIP-C PKG
SCHMITT-TRIG TTL LS NAND QUAD 2-INP
TIMER TTL MOND/ASTBL
DP AMP GP 8-TO-99 PKG

06665
27014
01295
18324
06665

DP-16FJ
LM339AJ
SN74LS132N
NE555N
DP-02CJ

A16U8
A16U9
A16UlO
A16Ull
A16U12

1826-1058
1826-0092
1826-0229
1826-0161
1826-0229

3
3
8
7
8

1
1
1
1
1

[C
(C
[C
IC
IC

OP
OP
OP
OP
OP

GP 8-TO-99 PKG
GP DUAL TO-99 PKG
LOW-DRIFT TO-99 PKG
GP QUAD 14-DIP-P PKG
LOW-DRIFT TO-99 PKG

06665
04713
06665
27014
06665

OP-02CJ

A16U13
A16U14
A16U15
A16U16
A16U17

1826-0471
1826-0840
1810-0206
1820-1196
1826-0684

2
9
8
8
9

1
1
1
1

IC OP AMP LOW-DRIFT TO -99 PKG
SAMPLE AND HOLD 14 -CERDIP
NETWORK-RES 8-SIP lO.OK OHM X 7
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
D/A 12-BIT 18-CBRZ/SDR CMOS

28480
34371
11236
01295
24355

1826-0471
HAl-2425-5
750-81
SN74LS174N
AD7541BD(SEL)

A16U18
A16U19
A16U20
A16U21
A16U22

1820-1196
1826-0161
1826-0306
1820-1196
1826-0541

8
7
2
8
7

1
1
1
1
1

IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
IC DP AMP GP QUAD 14-DIP-P PKG
IC COMPARATOR GP QUAD 14-DIP-C PKG
IC FF TTL LS D-TYPE POS-EDGE-TRIG CDM CL
D/A lo-BIT 16-PLASTIC CMOS

01295
27014
27014
01295
24355

SN74LS174N
LM324N
LM339AJ
SN74LS174N
AD7520JN(SEL)

A16U22
A16U23
A16U24
A16U25
A16U26

1826-0448
1820-1196
1820-1197
1820-1197
1820-1195

3
8
9
9
7

0
1
1
1
1

ALTERNATE FOR 1826-0541
IC FF TTL LS D-TYPE PDS-EDGE-TRIG CDM CL
IC GATE TTL LS NAND QUAD 2-INP
IC GATE TTL LS NAND QUAD 2-INP
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL

24355
01295
01295
01295
01295

AD7533LN(SEL)
SN74LS174N
SN74LSOON
SN74LSOON
SN74LS175N

A16U27
A16U28
A16U28
A16U29
A16VRl

1820-1196
1826-0541
1826-0448
1820-1196
1902-3203

8
7
3
8
6

1
0
1
1

IC FF TTL LS D-TYPE POS-EDGE-TRIG CDM CL
IC CDNV lo-B-D/A 16-DIP-P PKG
ALTERNATE FOR 1826-0541
IC FF TTL LS D-TYPE POS-EDGE-TRIG CDM CL
DIODE-ZNR 14.7V 5% DO-35 PD=.4W

01295
28480
24355
01295
04713

SN74LS174N
1826-0541
AD7533LN(SEL)
SN74LS174N

A16VR2
A16VR3
A16Wl

1902-3203
1902-0625
1460-1489

6
0
8

1
1
1

)IODE-ZNR 14.7V 5% DO-35 PD=.4W
3IODE-ZNR lN829 6.2V 5% DO-35 PD=.25W TC
dIREFORM BE CU AG

04713
04713
17450

AMP
AMP
AMP
AMP
AMP

CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

-

85660-60198 Parts List
Page 4 of 4

*Indicates factory-selected value

OP-05CJ
LM324N
OP-05CJ

lN829

HP Part Number 85660-60247
Al 6 Scan Generator
Reference
Designation

HP Part C
Number D sty
-

Description

Mfr
Code

Mfr Part
Number

Al6

85660-60247 5

1

BOARD ASSEMBLY SCAN GENERATOR
(SERIAL PREFIX: 2449A)

28480

85660-60247

A16Cl
A16C2
A16C3
A16C4
A16C5

0160-5609
0160-2208
0160-4892
0180-0116
0180-0228

5
4
6
1
6

1
1
1
1
1

CAPACITOR-FXD 1OUF +-lo%
CAPACITOR-FXD 330PF +-5%
CAP-FXD 1uF 25 V
CAPACITOR-FXD 6.8UF+-10%
CAPACITOR-FXD 22UF+-10%

84411
09023
56289
56289
56289

HEW-687
CD15FD331J03
2C37Z5U105M025C
150D685X9035B2-DYS
150D226X901582-OYS

A16C6
A16C7
A16C8
A16C9
A16ClO

0180-0229
0160-4005
0160-4892
0160-4892
0160-4892

7
3
6
6
6

1
1
1
1
1

CAP-FXD 33uF 10 V TA
CAPACITOR-FXD 1UF +-20x 1OOVDC CER
CAP-FXD 1uF 25 V
CAP-FXD 1uF 25 V
CAP-FXD IuF 25 V

56289
04222
56289
56289
56289

15DD336X9010B2-DYS
SR401E105MAAH
2C37Z5U105M025C
2C37Z5U105M025C
2C37Z5U105M025C

A16Cll
A16C12
A16C13
A16C14
A16C15

0160-4892
0160-4005
0160-4892
0160-4892
0160-4005

6
3
6
6
3

1
1
1
1
1

CAP-FXD 1uF 25
CAPACITOR-FXD
CAP-FXD 1uF 25
CAP-FXD IuF 25
CAPACITOR-FXD

56289
04222
56289
56289
04222

2C37Z5U105M025C
SR401E105MAAH
2C37Z5U105M025C
2C37Z5U105M025C
SR401E105MAAH

A16C16
A16C17
A16C18
A16C19
A16C20

0160-4892
0160-4892
0160-4005
0160-4892
0160-3787

6
6
3
6
6

1
1
1
1
1

CAP-FXD 1uF 25 V
CAP-FXD 1uF 25 V
CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 1uF 25 V
CAPACITOR-FXD 1UF +-lo% SOVDC MET-POLYC

56289
56289
04222
56289
84411

2C37Z5U105M025C
2C37Z5U105M025C
SR401E105MAAH
2C37Z5U105M025C
HEW-249

A16C21
A16C22
A16C23
A16C25
A16C26

0160-4892
0160-4892
0160-3447
0160-4892
0180-1743

6
6
5
6
2

1
1
1
1
1

CAP-FXD IuF 25 V
CAP-FXD 1uF 25 V
CAP-FXD 47OpF 1 kV
CAP-FXD 1uF 25 V
CAPACITOR-FXD .lUF+-10% 35VDC TA

56289
56289
56289
56289

2C37Z5U105M025C
2C37Z5U105M025C
808(1KV) X5E 471K
2C37Z5U105M025C
150D104X9035A2-DYS

A16C27
A16C28
A16C29
A16C30
A16C31

0160-3448
0160-3448
0160-4005
0160-4005
0160-4005

6
6
3
3
3

1
1
1
1
1

CAP-FXD 1OOOpF 1 kV
CAP-FXD 1OOOpF 1 kV
CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAPACITOR-FXD 1UF ~-20% 1OOVDC CER
CAPACITOR-FXD 1UF +-20% 1OOVDC CER

04222
04222
04222

808-548 X5E 102K
808-548 X5E 102K
SR401E105MAAH
SR401E105MAAH
SR4013105MAAH

A16C32
A16C33
A16C34
A16C35
A16C36

0160-4005
0160-4005
0160-4005
0160-4892
0160-4005

3
3
3
6
3

1
1
1
1
1

CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF
CAPACITOR-FXD 1UF
CAP-FXD 1uF 25 V
CAPACITOR-FXD 1UF

04222
04222
04222
56289
04222

SR401E105MAAH
SR401E105MAAH
SR401E105MAAH
2C37Z5UlOSM025C
SR401E105MAAH

A16C37
A16C38
A16C39
A16C40
A16C41

0160-4005
0160-4892
0160-4835
0160-4832
0160-4803

3
6
7
4
9

1
1
1
1
1

CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 1uF 25 V
CAPACITOR-FXD .lUF +-lo% 50VDC CER
CAPACITOR-FXD .OlUF +-lo% 1OOVOC CER
CAP-FXD 68pF 100 V

04222
56289
04222
04222
04222

SR401E105MAAH
2C37Z5U105M025C
SA115C104KAAH
SAlOlC103KAAH
SA102A680JAAH

A16CRl
A16CR2
A16CR3
A16CR4
A16CR5

1901-0539
1901-0539
1901-0539
1901-0539
1901-0376

3
3
3
3
6

1
1
1
1
1

DIODE-SCHOTTKY
DIODE-SCHOTTKY
DIODE-SCHOTTKY
DIODE-SCHDTTKY
DIODE-GEN PRP

28480
28480
28480
28480
9N171

1901-0539
1901-0539
1901-0539
1901-0539
IN3595

50VDC MET-POLYC
300VDC MICA 0+7
35VDC TA
15VDC TA

V
1UF +-20x IOOVDC CER
V
V
1UF +-20x 1OOVDC CER

SM
SM
SM
SM
35V

+-20% IOOVDC CER
+-20% 1OOVDC CER
+-20% 1DDVDC CER
+-20% 1OOVDC CER

SIG
SIG
SIG
SIG
50MA DO-35

-

*Indicates factoy-selected value

85660-60247 Parts List
Page 1 of 4

HP Part Number 85660-60247
A16 Scan Generator
Reference
Designation

HP Part
Number

C

D

3Y
-

Mfr
Code

Description

Al 6CR6
A16Jl
A16J2
A16J3
A16J4

1901-0040
1250-0543
1250-0543
1250-0543
1250-0543

1
8
8
8
8

1
1
1
1
1

DIODE-SWITCHING 30V
CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP
CONNECTOR-RF SM-SNP

A16MP3
A16MP4
A16MP6
A16MP7

1251-2194
1480-0073
4040-0749
4040-0754

1
6
4
1

2
2
1
1

A16MP9
AlGMPlO
AlGMPll
A16Ql
A16Q2

2200-0143
2190-0003
0380-1194
1855-0020
1855-0020

0
8
1
8
8

A1693
A16Q4
A16Q5
Al6Q6
A16Q7

1855-0020
1855-0020
1855-0082
1855-0082
1855-0082

A16Q8
A16Q9
Al6QlO
A16Qll
A16Q12

50MA
M PC
M PC
M PC
M PC

71468
98291
98291
98291
98291

51-053-0349-BE8
51-053-0349-BE8
51-053-0349-BE8
51-053-0349-BE8

CONNECTOR-SGL CONT SKT .021-IN-BSC-SZ
PIN-ROLL .062-IN-DIA .25-IN-LG BE-CU
EXTR-PC BD BRN PDLYC .062-IN-BD-THKNS lEXTR-PC BD BLU POLYC .062-IN-BD-THKNS l-

00779
72962

3-331272-O
99-012-062-0250

2
2
2
1
1

SCREW-MACH 4-40 .375-IN-LG PAN-HD-POZI
WASHER-LK HLCL NO. 4 .115-IN-ID
STANDOFF-RND .594-IN-LG 4-40-THD
TRANSISTOR J-FET N-CHAN D-MODE TO-18 SI
TRANSISTOR J-FET N-CHAN D-MODE TO-18 SI

77250
80120
04729
04713
04713

P-535-M17-F16-440
SFE793
SFE793

8
8
2
2
2

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

J-FET
J-FET
J-FET
J-FET
J-FET

04713
04713
04713
04713
04713

1854-0404
1853-0281
1853-0322
1853-0322
1854-0637

0
9
9
9
1

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN
PNP
PNP
PNP
NPN

SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400MW
2N2946A SI TO-46 PD=400MW
2N2946A SI TO-46 PD=400MW
2N2219A SI TO-5 PD=800MW

04713
04713
04713
04713
04713

A16Q13
A16Q14
A16915
A16Rl
A16R2

1853-0322
1853-0322
1853-0322
3757-0464
3683-2265

9
9
9
5
1

1
1
1
1
1

TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
7ESISTDR 90.9K +-1% .125W TF TC=O+-100
?ESISTOR 22M 5% .25W CC TC=-900/+1200

04713
04713
04713
19701
01121

SFR25H
CB2265

A16R4
A16R5
A16R6
A16R7
A16R8

3757-0465
0757-0470
0698-8827
0698-3450
0698-3459

6
3
4
9
8

1
1
1
1
1

m1ESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1OOK +-1% .125W TF TC=O+-100
162K +-1% .125W TF TC=O+-100
1M +-1X .125W TF TC=O+-100
42.2K 1% .125W TF TC=O+-100
383K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R9
A16RlO
A16Rll
A16R12
A16R13

0698-3153
0698-3161
0698-3446
0698-3153
0757-0416

9
9
3
9
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

3.83K 1% .125W TF TC=O+-100
38.3K 1% .125W TF TC=O+-100
383 1% .125W TF TC=O+-100
3.83K 1% .125W TF TC=O+-100
511 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R18
A16R19
A16R20
A16R21
A16R22

0757-0442
0757-0438
0757-0280
D757-0442
0757-0199

9
3
3
9
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
iESISTOR

10K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
1K +-I% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
21.5K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R23
A16R24
A16R25
A16R27

3757-0459
3698-3136
1757-0289
1698-0084

8
8
2
9

1
1
1
1

?ESISTOR
{ESISTOR
{ESISTOR
ZESISTOR

56.2K
17.8K
13.3K
2.15K

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H

N-CHAN
N-CHAN
P-CHAN
P-CHAN
P-CHAN

2NS DO-35
50-OHM
50-OHM
50-OHM
50-OHM

Mfr Part
Number

D-MODE
D-MODE
D-MODE
D-MODE
D-MODE

TO-18 SI
TO-18 SI
SI
SI
SI

+-1% .125W TF TC=O+-100
1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
1% .125W TF TC=O+-100

-

8X60-60247 Parts List
Page 2 of 4

*Indicates factory-selected value

SFE793
SFE793

2N2907A

2N2219A

HP Part Number 85660-60247
Al6 Scan Generator

Reference
Designation

HP Part
Number

C

D

3Y
-

Mfr
Code

Description

Mfr Part
Number

A16R28

0698-3161

9

1

RESISTOR 38.3K 1% .125W TF TC=O+-100

19701

SFR25H

A16R30
A16R31
A16R32
A16R33
A16R34

0698-3160
0757-0289
0757-1094
0757-0439
0757-0442

8
2
9
4
9

1
1
1
1
1

RESISTOR 31.6K 1% .125W TF TC=O+-100
RESISTOR 13.3K +-1% .125W TF TC=O+-100
RESISTOR 1.47K +-1% .125W TF TC=O+-100
RESISTOR 6.81K +-1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R35
A16R38
A16R39
A16R40
A16R41

0698-3154
0698-3157
0698-3158
0757-0442
0698-3153

0
3
4
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R44
A16R45
A16R46*

0699-0307
0757-0442
0699-0380

1
9
0

1
1
1

RESISTOR 36.751: +-0.1% .lW TF TC=O+-10
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 73.8741K .025% .lW F TC=O+-5

19701
19701
2848

50232
SFR25H
0699-0380

A16R48
A16R49

0757-0442
0757-0442

9
9

1
1

RESISTOR 10K +-I% .125W TF TC=O+-100
RESISTOR IOK +-1% .125W TF TC=O+-100

19701
19701

SFR25H
SFR25H

A16R50
A16R53
A16R54
A16R55
A16R56

0757-0442
0698-3136
0757-0440
0757-0459
0757-0442

9
8
7
8
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10K +-1% .125W TF TC=O+-100
17.8K 1% .125W TF TC=O+-100
7.5K +-1% .125W TF TC=O+-100
56.2K +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A16R57
A16R58
A16R59
A16R60
A16R62

0698-3443
0757-0280
0757-0280
0757-0280
2100-1762

0
3
3
3
9

1
1
1
1
1

RESISTDR 287 1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1X .125W TF TC=O+-100
RESISTOR-TRMR 20K 5% WW SIDE-ADJ I-TRN

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
CT-106-4-20K

A16R64
A16R65
A16R66
A16R67
A16R68

0757-0442
0757-0280
0698-3158
2100-1760
2100-1759

9
3
4
7
4

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 23.7K 1% .125W TF TC=O+-100
RESISTOR-TRMR 5K 5% WW SIDE-ADJ l-TRN
RESISTOR-TRMR 2K 5% WW SIDE-ADJ I-TRN

19701
19701
19701

SFR25H
SFR25H
SFR25H
CT-106-4-5K
CT-106-4-2K

A16R70
A16R71
A16R72
A16R73
A16R80

0698-3158
2100-1759
2100-1759
0698-3136
0699-0308

4
4
4
8
2

1
1
1
1
1

RESISTOR 23.7K 1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 5% WW SIDE-ADJ I-TRN
RESISTOR-TRMR 2K 5% WW SIDE-ADJ l-TRN
RESISTOR 17.8K 1% .125W TF TC=O+-100
RESISTOR 24.97K +-0.025% .lW TF TC=O+-5

19701

19701
19701

SFR25H
CT-106-4-2K
CT-106-4-2K
SFR25H
50232

A16R81
A16R82
A16R83
A16R84
A16R86

0699-0308
0699-0308
0699-0308
0757-0440
0757-0346

2
2
2
7
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

24.97K +-0.025% .lW TF TC=O+-5
24.97K +-0.025% .lW TF TC=O+-5
24.97K +-0.025% .lW TF TC=O+-5
7.5K +-1X .125W TF TC=O+-100
10 +-1X .125W TF TC=O+-100

19701
19701
19701
19701
91637

50232
50232
50232
SFR25H
CMF-55-1, T-l

A16R90
A16R91
A16R92
Al 6R93
A16R94

0698-3136
0757-0199
D757-0442
3698-0084
3698-3162

8
3
9
9
0

1
1
1
1
1

RESISTOR
?ESISTDR
XESISTDR
XESISTOR
7ESISTOR

17.8K 1% .125W TF TC=O+-100
21.5K +-I% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
46.41: 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

4.22K 1%
19.6K 1%
23.7K 1%
10K +-1%
3.83K 1%

.125W
.125W
.125W
.125W
.125W

TF
TF
TF
TF
TF

TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100
TC=O+-100

-

*Indicates factory-selected value

85660-60247 Parts List
Page 3 of 4

HP Part Number 85660-60247
Al 6 Scan Generator
Reference
Designation

HP Part
Number

sty
-

Description

Mfr
Code

Mfr Part
Number

A16R95
A16R96
A16R97
A16R98
A16TPl

3757-0442
0757-0424
3757-0405
5757-3439
1251-0600

9
7
4
9
0

1
1
1
1
1

RESISTOR 10K +-1X .125W TF TC=O+-100
RESISTOR l.lK +-1% .125W TF TC=O+-100
RESISTOR 162 +-1% .125W TF TC=O+-100
RESISTOR 178K +-1% .125W TF TC=O+-100
CONNECTOR-SGL CDNT PIN 1.14-MM-BSC-SZ SQ

19701
19701
19701
19701
27264

SFR25H
SFR25H
SFR25H
SFR25H
16-06-0034

A16TP2
A16TP3
A16TP4
A16TP5
A16TP6

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A16TP7
A16TP8
A16TP9
A16Ul
A16U2

1251-0600
1251-0600
1251-0600
1826-0601
1826-0471

0
0
0
0
2

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC OP AMP PRCN TO-99 PKG
IC OP AMP LOW-DRIFT TO-99 PKG

SQ
SQ
SQ

27264
27264
27264
06665
06665

16-06-0034
16-06-0034
16-06-0034
OP-16FJ
DP-07CJ SELECTED

A16U3
A16U4
A16U5
A16U6
A16U7

1826-0601
1826-0306
1820-1425
1826-0180
1826-1058

0
2
6
0
3

1
1
1
1
1

IC
IC
IC
IC
IC

OP AMP PRCN TO-99 PKG
COMPARATOR GP QUAD 14-DIP-C PKG
SCHMITT-TRIG TTL LS NAND QUAD L-INP
TIMER TTL MONO/ASTBL
OP AMP GP 8-TO-99 PKG

06665
27014
01295
18324
06665

OP-16FJ
LM339AJ
SN74LS132N
NE555N
DP-02CJ

A16U8
A16U9
A16UlO
A16Ull
A16U12

1826-1058
1826-0092
1826-0229
1826-0161
1826-0229

3
3
8
7
8

1
1
1
1
1

IC
IC
IC
IC
IC

OP
OP
OP
OP
OP

GP 8-TD-99 PKG
GP DUAL TO-99 PKG
LOW-DRIFT TO-99 PKG
GP QUAD 14-DIP-P PKG
LOW-DRIFT TO-99 PKG

06665
04713
06665
27014
06665

OP-OECJ
OP-05CJ
LM324N
OP-OSCJ

Al6U14
A16U15
A16U16
A16U17
A16U18

1826-0840
1810-0206
1820-1196
1826-0684
1820-1196

9
8
8
9
8

1
1
1
1
1

SAMPLE AND HOLD 14 -CEROIP
NETWORK-RES 8-SIP lO.OK OHM X 7
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
D/A 12-BIT 18-CBRZ/SDR CMOS
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL

34371
11236
01295
24355
01295

HAl-2425-5
750-81
SN74LS174N
AD75418D(SEL)
SN74LS174N

A16U19
A16U20
A16U21
A16U22
A16U22

1826-0161
1826-0306
1820-1196
1826-0541
1826-0448

7
2
8
7
3

1
1
1
1
1

IC OP AMP GP QUAD 14-DIP-P PKG
IC COMPARATOR GP QUAD 14-DIP-C PKG
IC FF TTL LS D-TYPE POS-EDGE-TRIG COM CL
D/A lo-BIT 16-PLASTIC CMOS
ALTERNATE FOR 1826-0541

27014
27014
01295
24355
24355

LM324N
LM339AJ
SN74LS174N
AD7520JN(SEL)
AD7520LN(SEL)

A16U23
A16U24
A16U25
A16U26
A16U27

1820-1196
1820-1197
1820-1197
1820-1195
1820-1196

8
9
9
7
8

1
1
1
1
1

IC
IC
IC
IC
IC

POS-EDGE-TRIG COM CL
QUAD E-INP
QUAD 2-INP
POS-EDGE-TRIG COM CL
POS-EDGE-TRIG COM CL

01295
01295
01295
01295
01295

SN74LS174N
SN74LSOON
SN74LSOON
SN74LS175N
SN74LS174N

A16U28
A16U28
A16U29
A16VRl
A16VR2

1826-0541
1826-0448
1820-1196
1902-3203
1902-3203

7
3
8
6
6

1
1
1
1
1

D/A lo-BIT 16-PLASTIC CMOS
ALTERNATE FOR 1826-0541
IC FF TTL LS D-TYPE POS-EDGE-TRIG CDM CL
DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR 14.7V 5% DO-35 PD=.4W

24355
24355
01295
04713
04713

AD7520JN(SEL)
AD7533LN(SEL)
SN74LS174N

A16VR3
A16Wl

1902-0625
1460-1489

0
8

1
1

DIODE-ZNR lN829 6.2V 5% DO-35 PD=.25W TC
WIREFORM BE CU AG

04713
17450

lN829

AMP
AMP
AMP
AMP
AMP

CONT
CDNT
CONT
CONT
CDNT

PIN
PIN
PIN
PIN
PIN

FF TTL LS D-TYPE
GATE TTL LS NAND
GATE TTL LS NAND
FF TTL LS D-TYPE
FF TTL LS D-TYPE

-

8566060247 Parts List
Page 4 of 4

*Indicates factory-selected value

R F

S E C T I O N

-------------------------,,
Al6 SCAN GENERATOR
85660-60198 (1 OF 2)
( S E R I A L P R E F I X E S : 2410~-2430~)

I
I
I
I
I

4

I

I
I
4LlRP

AIW-2

NC

4OR1

AISPZ-20

NC

I
I
I

CAPAClTANCE IS IN l.ICROFARAOS(~F)

I N D U C T A N C E IS I N YICROHENRIES(,,H)

4

-5.m

,082
OS3

A15P2-6
AlSP2-24

a
E

OR4

A15P2-7

E

AIWZ-25

E

086

A 15P2-8

E

007

A15P2-26

E

,095

AIW-16.34
AlW-16.34

NC

5

- 1 0 ”

R

20

-10”

AIW-13.31
Al*Pl-I3.3I

3. U N L E S S O T H E R W I S E INDICATED:
S I G N A L S E N T E R A T L E F T SIDE O R
T O P AN0 E X I T A T RIGHT S I D E O R
B O T T O M O F FVNCTION B L O C K S .

R

4

6

SAT,

Ala=-5

P

19 - 5 . 2 ”

2

1
7

2

SAT2
LSTS

2

LSAS

8 LAOS
2

3

LANR

NC

AIF-20

P

A 12P3-6

B

AIZPJ-21

I

AlZP3-7

F

AIZPS-22

C

5.

MNEMONlC

TABLE.

MNEMONIC

DESCRIPTION

088

AIWZ-9

B

OS9

AISPZ-27

B

08 1p

AISPZ-10

B

LSTS

LOW-SCAN TlME S T R O B E

OB, 1

A15P2-28

E

LAOS

LOW-AUX OUT S T R O B E

0812

A15P2-11

I3

Hsw

HIGH=SWEEPING

SAT 1

:gg” INTEGER ATTENUATOR

SAT2

SCAN INTEGER ATTENUATOR
MSB

LANR

LCW=ANALCGRESET

9

“SW

0813

AlSP2-29

E

0814

AISPZ-I2

NC

1 2

0815

A15P2-JO

NC

2

IC

7

A 1 W-8

C

-40”

AIW-11.29

R

-40”

Al*Pl-I1.29

R

13

NC

28

NC

LSAS

LOW SC N ATTENUATOR
STROBEA

6 . A C C E P T A B L E VALVES F O R R46. A R E :
VALUE
1
PART NUMBER
74.2%

0699-0311 ( C O - 7 )

73.874K

0699-0380 (CO=O,

THE FOLLOWING COMPONENTS ARE NOT USED:

NO

NC

,NO

NC

I
I
I

“ 1 5 P I N CONFlG”RATION:

UIC. “ 4 0
“IIB. “110
"15R5. "15R6.
"190
“24A. “ 2 4 0

I
I
I
I
I
I
I
I
I
I
I
I

"15R7

8 . czs H A S B E E N C H A N C E D FROM 1p)F ( H P P A R T
NUMBER 0180-0291) T O O.l!.lF ( H P P A R T
N U M B E R 0180-1743) T O S U P P R E S S YOLTAGE
S P I K E S O N T H E A”X O U T S I G N A L .

I
I
I
I
I
I
I
I
I

Al6
--------------------------J
Al6 Scan Generator, Schematic Diagram

R F

S E C T I O N

- Al6 SCAN GENERATOR
85660-60247 (1 OF 2)
(SERIAL PREFIX: 2449A)

----P--P

-

-

-

P

-

-

P

-

-

-

-

-

-

-

-

-

;
I

I
I
I
1
SIGNAL

P
1

FUNCTION
BLOCK

TO/FROM

c;No

19

L .BIO

AISW-19

2

/ \ob?p

A 1 SW-2

NC

2‘0

/ ,DR,

A15P2-20

NC

3

!\DRZ

AlW2-3

NC

21
-

P IORO

A15P2-21

NC

4

8DR4

NC

A15P2-4

NC

2t
2 hLOT “SE0
5
I OW

AISW-22

NC

h15P2-5

B

23
6

A15P2-23

B

24
7

I 081

UNLESS OTHERWISE INDICATED!
R E S I S T A N C E I S I N O H M S (fl)
C A P A C I T A N C E I S I N MICROFARACS(,,F )
INOUCTANCE IS I
N
MICROHENRIES(~H
‘)

A15PZ-6

I 083

AlW-24

B

A15P2-7

B

2i
5
I 005
/
086

3 I
2 6 I 087
2 I OBB
27 10 8 9
1 0 I 091p
2 8 I 0011
1 1 I 0812
2’9
TI 0013
-

A,W2-25

6

AlW2-8

B

Am--26

B

A15P2-9

B

A15P2-27

B

I

5

I

M N E M O N I C TABLE:
MNEMONIC

DESCRIPTION

LSAS

0 S C A N ATTENU ATOR
G&

LSTS

1 LOWG3.N T I M E S T R O B E

A15P2-10

B

A15P2-28

B

LOW=A”X O U T S T R O B E

A15P2-11

B

HIw=SwEEPING

A15P2-29

B

I’ 0014

A15P2-12

SCAN INTEGER ATTENUATOR
LSB

NC

3, ,

I’0015

A15P2-30

NC

1. 3

N' c

3I

NI

11 1

NI:
NI

1 2

3: !t
1: 5

NC

3. J

N(

16

NC
NC

5
Ii
3!
1E
Jf

+!
+:
G,
c,

I

I

I
I

“ 1 5 P I N CONFlG”RAT,ON.
UlS(10K)

B

I 084

I
I
I

UNLESS OTHERWISE INDICATED.
S I G N A L S E N T E R A T L E F T SIDE O R
T O P AND E X I T A T R I G H T SIDE O R
B O T T O M O F FVNCTICN B L O C K S .

3&i

I 082

I
I
I

R E F E R E N C E OESlGNATORS WITHIN
THIS ASSEMBLY ARE ABBREVIATED.
F O R C O M P L E T E R E F E R E N C E DES,&
NATION,PREFIX ABBREYIATION WlTH
ASSEMBLY DESIGNATION.

NC

ib i,1”’
~~Pl-ll.Zli

R

I

I
I
I
I

/

I
I
I

I

T H E F O L L O W I N G C O M P O N E N T S A R E N O T USED’
“4C. U40
“11B. “110
“15R5. U15R6.
“190
U24A. “240

I
I
I

“I%7

8 . C26 H A S B E E N C H A N G E 0 FROM l,,F ( H P P A R T
N U M B E R 0180-0291) T O O.l!,F ( H P P A R T
NUMBER 0180-1743) T O SVPPRESS V O L T A G E
SPlKES O N T H E A”X OUT SIGNAL.

I
I
I
I
I
I
I
I
I

A161
Al6 Scan Generator, Schematic Diagram

Al7
Al7 Positive Regulator, Circuit Description
Al? Positive Regulator provides +20 V, +12 V, and +5.2 V regulated voltages to the
instrument. It also provides for thermal shutdown at temperatures above 85°C or if the fan
fails, controls power to the oscillator in the A22 10 MHz Frequency Standard and ensures
power-up and power-down operation that will not invalidate data in Al5 Controller. The
relationship of Al7 to A8 Rectifier, A23 Motherboard, and Al8 Negative Regulator is shown
on the A8 Rectifier schematic.

Front-Panel Shutdown @
When the front-panel LINE switch is in STANDBY, the LSBY line is grounded, fan relay Kl
on the A23 Motherboard is energized turning the fan off, and the STANDBY LED is turned
on.
Pin 9 of U3C is also at ground when LSBY is grounded so the output of U3C is at i-10 V,
turning on Qll through R41. Qll sinks all of the current supplied by the compound current
source Ql and Q2, which turns off the i-20 V supply series-pass transistor A23Q3, located on
the A23 Motherboard. All other supplies are referenced to the output of the $20 V Regulator,
so they are also disabled. (The +22 V supply is an exception. It is always on as long as the
instrument has ac power from the line.)
When the front-panel LINE switch is switched to the ON position, the LSBY line is no longer
grounded, the fan relay Kl is no longer energized, and the fan turns on. LSBY rises to about
+22 V through the fan relay coil. This causes the output of U3C to go low, turning off Qll.
The current source of Ql and Q2 can now supply current to A23Q3 on the A23 Motherboard,
and the -j-20 V supply will turn on.

Thermal Shutdown @
U3D senses the voltage across thermistor RTl. The resistance of RTl is nominally 1000 ohms
at 25°C and drops to 107 ohms at 85°C. When the resistance drops, the output of U3D rises,
turning on the thermal shutdown LED DS3 and also Q12, which disables the current source in
the +20 V supply, shutting the supply off. CR5 and R52 provide hysteresis so the instrument
will not turn on again until the temperature drops to 55°C.

Al7

1

+20 V Regulator @
The +20 V supply has as its reference a 6.2 V zener diode VR2 biased from the output of
the j-20 V supply, @ on the schematic. The +20 V output is divided down by R9, R50, and
RlO to 6.2 V. This voltage is compared with the t6.2 V reference voltage by amplifier Ul.
This amplifier sinks current from the current source Ql so that the voltage at the base of the
series-pass transistor A23Q23 ( on A23 Motherboard) is such that the output of the supply is
at +20 V.
A simple form of foldback current limiting is provided by the current sensing resistor R3, R4,
R5, CR4, and Q3. 0 vervoltage protection is provided by the +20 V crowbar @ consisting of
VR3 and CRl. DS2 is an LED which indicates the presence of an output voltage. Fuse F2
provides further protection for the supply.

+20 V Switched Supply @
The +20 V switched supply provides power to the oscillator circuits of the A22 10 MHz
Frequency Standard. If the Reference Disable line HSTD is low, QlO is off, and Q9 is off, so
no power is supplied to the internal 10 MHz oscillator. When HSTD goes high, both Q9 and
QlO turn on, and i-20 V is supplied to the internal 10 MHz oscillator.

+12 V Regulator @
The i-12 V supply is a 12 V floating regulator with its reference terminal biased at 11 V by
R24 and VR8. This supply is enabled by the presence of the -5.2 V supply, which causes QS
to turn off, allowing the zener diode VR8 to be biased by the current flowing from the output
of the supply through R24. LED DS4 provides a visible indication of an output voltage.
Overvoltage protection is provided by the -l-12 V crowbar 0. The regulator itself is internally
protected, but further protection is provided by CR3 and Fl.

+5.2 V Regulator @
The operation of this supply is similar to that of the +20 V supply. Its reference is from the
voltage divider R36 and R49 from the i-20 V supply. This voltage is compared with the
divided down output voltage by U2, which drives the Darlington-connected transistors Q6
and Q4 and the series-pass transistor A23Q4 on the A23 Motherboard. Foldback current
limit is provided by R27-29, R31, R32, and Q5. The output crowbar @ provides overvoltage
protection. Further protection is provided by F3.

Power Up/Down Detector @
A power-up indication HPUP is provided to allow the instrument to turn on and off in an
orderly manner. The HPUP line goes high when all of the following conditions are met:
1. The rectified dc voltage of the +5.2 V Unreg supply is above 8.6 V (provides an indication
that the Line Voltage is present).
2. The t5.2 V output is higher than t4.9 V.
3. The front-panel shutdown and thermal shutdown circuits allow the instrument to be turned
on.
If both the front-panel shutdown and thermal shutdown transistors Qll and Q12 are
off, CR11 is reverse biased. If the output of the i-5.2 V supply is greater than i-4.9 V,
2 Al7

the output of U3A is high, and CR12 is reverse biased. If the dc input voltage to the
+5.2 V supply is greater than +8.6 V, then the voltage at pin 5 of U3B is greater than
+6.2 V, and the output of U3B is high. This turns on transistors Q13 and Q7, pulling
the collector of Q7 to about +5 V. This provides the HPUP signal.
If any of the above conditions are not met, HPUP remains low. R59 and Cl4 provide an
additional time delay at turn-on to allow the supplies to settle down.

RF Section Internal Fuse Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

3
Warning

9

Remove ac line cord from both instruments before proceeding with this
procedure.

1. Position instrument upside-down as show in view A.
2. Remove feet @ from rear of RF Section by removing screws @ show in view A.
3. Remove bottom cover by loosening screw @ and pulling cover toward rear of instrument.
4. Location of fuses is shown in view B.

L

Fl

+22V
7

1A

Fl +12V I
A
F2 +ZOV 3 A
F 3
t5.2V 6A
,

RE& I ER
\

Fl

-5.2V

2.5A

F2 - 4 0 V 1.5A
F 3 - l O V 5 A

w-

Al7
POS REG
I

Al8
NEG REG
/

VIEW B

VIEW A

Figure 1. Internal Fuse Placement
Al7 3

HP Part Number 85660-60174
Al7 Positive Regulator
Reference
Designation

HP Part
Number

Description

Mfr
Code

Mfr Part
Number

Al7

95660-60174

7

1

BOARD ASSEMBLY, POSITIVE REGULATOR
(SERIAL PREFIXES: 2410A - 2532A)

28480

85660-60174

A17Cl
A17C2
A17C3
A17C4
A17C5

3180-2205
3180-0116
3180-1746
3160-2199
3180-0228

3
1
5
2
6

1
1
1
1
1

CAPACITOR-FXD .33UF+-10%
CAPACITOR-FXD 6.8UF+-10%
CAPACITOR-FXD 15UF+-10%
CAPACITOR-FXD 30PF +-5%
CAPACITOR-FXD 22UF+-10%

56289
56289
56289
28480
56289

150D334X9035A2-DYS
150D685X9035B2-DYS
1500156X9020B2-DYS
0160-2199
150D226X9015B2-DYS

A17C6
A17C7
A17CB
A17C9
A17ClO

3180-0116
3160-0573
3160-4256
3160-4256
3160-2199

1
2
6
6
2

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

56289
28480
16546
16546
28480

150D685X9035B2-DYS
0160-0573
CW30 B 473M
CW30 B 473M
0160-2199

A17Cll
A17C12
A17C13
A17C14
A17C15

3180-0197
3180-0228
3160-4892
3180-0197
3180-0197

8
6
6
8
8

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAP-FXD 1uF 25 V
CAPACITOR-FXD 2.2UF+-10% 20VDC TA
CAPACITOR-FXD 2.2UF+-10% 20VDC TA

56289
56289
56289
56289
56289

1500225X9020A2-DYS
150D226X9015B2-OYS
2C37Z5U105M025C
150D225X9020A2-DYS
150D225X9020A2-DYS

A17C16
A17CRl
A17CR2
A17CR3
A17CR4

0160-4832
1884-0018
1884-0046
1901-0743
1901-0033

4
5
9
1
2

1
1
1
1
1

CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
THYRISTOR-SCR 2N4186 VRRM=EOO
THYRISTOR-SCR VRRM=50
DIODE-PWR RECT lN4004 400V 1A DO-41
DIODE-GEN PRP 180V 200MA DO-35

04222
04713
71744
9N171

SAlOlC103KAAH
2N4186
C23OF
lN4004
lN645

A17CR5
A17CR6
Al7CR7
A17CRll
A17CR12

1901-0033
1901-0033
1884-0018
1901-0033
1901-0033

2
2
5
2
2

1
1
1
1
1

DIODE-GEN PRP 180V 200MA DO-35
DIODE-GEN PRP 180V 200MA DO-35
THYRISTOR-SCR 2N4186 VRRM=200
DIODE-GEN PRP 180V 200MA DO-35
DIODE-GEN PRP 180V 200MA DO-35

9N171
9N171
04713
9N171
9N171

lN645
lN645
2N4186
lN645
lN645

A17DSl
A17DS2
A17DS3
A17DS4
A17Fl

1990-0487
1990-0487
1990-0404
1990-0487
2110-0001

7
7
8
7
8

1
1
1
1
1

LED-LAMP LUM-INT=2MCD BVR=SV
LED-LAMP LUM-INT=2MCD BVR=5V
LED-LAMP LUM-INT=SOOUCD IF=50MA-MAX
LED-LAMP LUM-INT=2MCD BVR=SV
FUSE IA 250V NTD FE UL

28480
28480
28480
28480
75915

HLMP-1401
HLMP-1401
HLMP-1000
HLMP-1401
312 001

A17F2
A17F3
A17MPl
A17MP3
A17MP4

2110-0003
2110-0056

0
3

1
1

75915
75915

312 003
312 006

3520-0128
2110-0269

7
0

2
6

FUSE 3A 250V NTD FE UL
FUSE 6A 250V NTD FE UL
NOT ASSIGNED
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
FUSEHOLDER-CLIP TYPE .25D-FUSE

77250
28480

2110-0269

A17MP5
A17MP6
A17MP7
A17MP8
A17MP9

?190-0014
!190-0027
!950-0051
5000-9043
5040-6843

1
6
8
6
2

2
1
1
1
1

WASHER-LK INTL T NO. 2 .089-IN-ID
WASHER-LK INTL T l/4 IN .256-IN-ID
NUT-HEX-DBL-CHAM l/4-28-THD .094-IN-THK
EXTRACTOR PIN
PC BOARD EXTRACTOR

78189
78189
73743
28480
28480

A17MPlO
A17MPll
A17MP12
A1791
A17Q2
A17Q3

3151-0013
36701-20036
1200-0081
1853-0012
1853-0451
1854-0404

4
8
4
4
5
0

1
1
10
1
1
1

WIRE 22AWG 1X22
DIODE MOUNTING BLOCK
INSULATOR-FLG-BSHG NYLON
TRANSISTOR PNP 2N2904A SI TO-39 PD=GOOMW
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PO=360MW

92194
28480
26365
04713
04713
04713

35VOC TA
35VDC TA
2OVDC TA
300VDC MICA
15VDC TA

6.8UF+-10% 35VDC TA
4700PF +-20% 1OOVDC CER
.047UF +-20% 200VDC CER
.047UF +-20% 2OOVDC CER
30PF +-5% 300VDC MICA

1902-00-00-2580
1914-00
5000-9043
5040-6843
298
86701-20036
974 307
2N2904A

-

*Indicates factory-selected value

85660-60174 Parts List
Page 1 of 4

HP Part Number 85660-60174
Al7 Positive Regulator

Reference
Designation

HP Part
Number

Xl
-

Description

Mfr
Code

Mfr Par!
Number

A17Q4
A17Q5
A17Q6
A17Q7
A17Q8

1854-0441
1854-0404
1854-0404
1853-0281
1854-0404

1
1
1
1
1

TRANSISTOR

NPN

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

NPN
NPN
PNP
NPN

SI m=5.aw FT=aooKtiz
SI TO-18 PD=360MW
SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400MW
SI TO-18 PD=360MW

28480
04713
04713
04713
04713

A17Q9
A17QlO
A17Qll
A17Q12
A17Q13

1853-0281
1854-0404
1854-0404
1854-0404
1854-0477

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

PNP
NPN
NPN
NPN
NPN

2N2907A SI TO-18 PD=400MW
SI TO-18 PD=360MW
SI TO-18 PD=360MW
SI TO-18 PD=360MW
2N2222A SI TO-18 PD=500Mk

04713
04713
04713
04713
04713

2N2907A

A17Rl
A17R2
A17R3
A17R4
A17R5

0757-0443
0757-0401
0811-1659
0757-041s
0757-0443

t
(
E
C
C

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

11K
100
.27
681
11K

+-1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-5% 2W PWI TC=O+-800
1% .125W F TC=O+-100
+-1X .125W TF TC=O+-100

19701
19701
11502
24546
19701

SFR25H
SFR25H
SPH
C4-l/8-TO-619R-F
SFR25H

A17R6
A17R7
A17R8
A17RS
A17RlO

0757-0394
0698-3150
D698-3442
3698-8465
3698-6835

C
E
9
6
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

51.1 +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
237 1% .125W TF TC=O+-100
7.15K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
5033R
5033R

A17Rll
A17R12
A17R13
A17R14
A17R15

3757-0280
1757-0278
1683-0275
1698-3444
3757-0346

3
9
9
1
?

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
1.78K +-1% .125W TF TC=O+-100
2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
19701
2M627
19701
91637

SFR25H
SFR25H
R-25J
SFR25H
CMF-55-1. T-l

A17R16
A17R17
A17R18
A17RlS
A17R20

0757-0278
0698-3162
0757-0442
0757-0438
0698-0083

c

?
E

1
1
1
1
1

RESISTOR 1.78K +-I% .125W TF TC=O+-100
RESISTOR 46.4K 1% .125W TF TC=O+-100
RESISTOR 10K +-1X .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 1.96K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R21
A17R22
A17R23
A17R24
A17R25

0757-0465
0757-0443
D757-0438
3757-039s
3757-0280

6
c
3
5
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1OOK +-1% .125W TF TC=O+-100
11K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
82.5 +-I% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R26
Al7R27
A17R28
A17R29
A17R30

3757-0401
1811-1661
1811-1661
1811-1661
1757-041s

0
2
2
2
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

100
.39
.39
.39
681

19701
11502
11502
11502
19701

SFR25H
SPH
SPH
SPH
SFR25H

A17R31
A17R32
A17R33
A17R34
Al7R35

1757-0420
1698-3154
0757-0280
0698-8466
0698-6835

3
0
:
7
C

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

750 +-1% .125W TF TC=O+-100
4.22K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
942 +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
50338
5033R

A17R36
A17R37

3698-6835
3683-0275

0
9

1
1

RESISTOR 3.16K +-0.5x .125W TF TC=O+-50
RESISTOR 2.7 5% .25W CF TC=O-400

19701
2M627

5033R
R-25J

t
c

+-1%
+-5%
+-5%
+-5%
+-1%

.125W TF TC=O+-100
2W PWI TC=O+-800
2W PWI TC=O+-800
2W PWI TC=O+-800
.125W TF TC=O+-100

-

85660-60174 Parts List
Page 2 of 4

*Indicates facto y-selected value

1845-0441

2N2907A

2N2222A

HP Part Number 85660-60174
Al7 Positive Regulator
Reference
Designation

HP Part C
Number D Qty

Mfr
Code

Description

Mfr Part
Number

1
0
2

1
1
1

RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 100 +-1X .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100

19701
19701
91637

SFR25H
SFR25H
CMF-55-1, T-l

0698-3150
0757-0418
0698-3156
0757-0459
0698-3150

6
9
2
a
6

1
1
1
i
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R46
A17R47
A17R48
A17R49
A17R50

0698-3150
0757-0442
0698-3444
0698-8464
2100-3095

6
9
1
5
5

1
1
1
1
1

RESISTOR 2.37K 1% .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 12.6K +-0.5X .125W TF TC=O+-50
RESISTOR-TRMR 200 10% TKF SIDE-ADJ 17-TR

19701
19701
19701
19701
73138

SFR25H
SFR25H
SFR25H
5033R
89PR200

A17R51
A17R52
A17R53
A17R54

0757-0280
0698-0084
0698-4405
0757-0280

3
9
36

A17R55

0757-0401

0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
2.15K 1% .125W TF TC=O+-100
107 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
91637
19701
19701

SFR25H
SFR25H
CMF-55-1, T-l
SFR25H
SFR25H

A17R56
A17R57
A17R58
A17R59
A17R60

0698-3157
0757-0438
0698-3634
0757-045s
0757-0438

3
3
1
a
3

1
i
1
I
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19.6K 1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
470 5% 2W MO TC=O+-200
56.21: +-1% .125W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100

19701
19701
11502
19701
19701

SFR25H
SFR25H
GS-3
SFR25H
SFR25H

A17R62
A17R63

0757-0346
0698-3444

21

A17R64
A17R65

0757-0280
0757-045s

3
a

1
1
i
i

RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 1K +-I% .125W TF TC=O+-100
RESISTOR 56.2K +-1X .125W TF TC=O+-100

91637
19701
19701
19701

CMF-55-1, T-l
SFR25H
SFR25H
SFR25H

A17R66
A17R67
Al7R68
A17R69
A17RTl

0757-0438
0757-0280
0757-0416
0698-3155
0'337-0126

3
3
7
1

1
1
1
1
1

RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 511 +-1% .125W TF TC=O+-100
RESISTOR 4.64K 1% .125W TF TC=O+-100
THERMISTOR DISC lK-OHM TC=-4.4%/C-DEG

19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
STD-0163

A17TPl
A17TP2
A17TP3
A17TP4
A17TP5

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A17TP6
A17TP7
A17TP8
A17TPS
A17Ul
A17U2

1251-0600
1251-0600
1251-0600
1251-0600
1820-0223
1820-0223

0
0
0
0
0
0

1
1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
IC OP AMP GP TO-99 PKG
IC OP AMP GP TO-99 PKG

SQ
SQ
SQ
SQ

27264
27264
27264
27264
27014
27014

16-06-0034
16-06-0034
16-06-0034
16-06-0034
LM301AH
LM301AH

A17U3
A17VRl
A17VR2
A17VR3
A17VR4

1826-0161
1902-3171
1902-0686
1902-3252
1902-0049

7
7
3
5
2

1
1
1
1
1

IC OP AMP GP QUAD 14-DIP-P PKG
DIODE-ZNR 11V 5% DO-35 PD=.4W TC=+.062%
DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%
DIODE-ZNR 22.6V 2% DO-35 PD=.4W
DIODE-ZNR 6.19V 5% DO-35 PD=.4W

27014
04713
04713
04713
04713

LM324N

A17R38
A17R39
A17R40

0698-3444
0757-0401
0757-0346

A17R41
A17R42
A17R43
A17R44
A17R45

6

2.37K 1% .125W TF TC=O+-100
619 +-1% .125W TF TC=O+-100
14.7K 1% .125W TF TC=O+-100
56.2K +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100

*Indicates factory-selected value

lN825

85660-60174 Parts List
Page 3 of 4

HP Part Number 85660-60174
Al7 Positive Regulator
Reference
Designation
A17VR5
A17VR7
A17VR8
A17VR9

HP Part
Number
1902-0686
1902-3203
1902-3172
1902-0049

sty
1
1
1
1

Description

DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%
DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR 11V 2% DO-35 PD=.IW TC=+.062%
DIODE-ZNR 6.19V 5% DO-35 PD=.4W

-

85660-60174 Parts List
Page 4 of 4

*Indicates facto y-selected value

Mfr Part
Number

Mfr
Code
04713
04713
04713
04713

lN825

HP Part Number 85660-60275
Al7 Positive Regulator
Reference
Designation

HP Part
Number

;)t

Description

Mfr
Code

Mfr Part
Number

Al7

t35660-60275

9

1

BOARD ASSEMBLY, POSITIVE REGULATOR
(SERIAL PREFIXES: 2607A-2729A)

28480

85660-60275

A17Cl
A17C2
A17C3
A17C4
A17C5

()iao-2205
(Ilao-0116
(1180-1746
(1160-5271
(nao-0228

3
1
5
7
6

1
1
1
1
1

CAPACITOR-FXO .33UF+-10%
CAPACITOR-FXD 6.8UF+-10%
CAPACITOR-FXD 15UF+-10%
CAPACITOR-FXD 30PF +-5%
CAPACITOR-FXD 22UF+-10%

35VDC TA
35VDC TA
ZOVDC TA
1OOVDC CER 0+-30
15VDC TA

56289
56289
56289
04222
56289

150D334X9035A2-DYS
150D685X9035B2-DYS
150D156X9020B2-DYS
SA102A300JAAH
1500226X901562-DYS

A17C6
A17C7
A17C8
A17C9
A17ClO

(1180-0116
(1160-4831
(1160-4834
(1160-4834
(1160-5271

1
3
6
6
7

1
1
1
1
1

CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD

6.8UF+-10% 35VDC TA
4700PF +-lo% 1OOVDC CER
.047UF +-lo% 1OOVDC CER
.047UF +-lo% 1OOVDC CER
30PF +-5% 1OOVDC CER 0+-30

56289
04222
04222
04222
04222

150D685X9035B2-DYS
SAlOlC472KAAH
SA301C473KAAH
SA301C473KAAH
SA102A300JAAH

A17Cll
A17C12
A17C13
A17C14
A17C15

(uao-0197
()iao-0228
(1160-4892
(Ilao-0197
(1180-0197

a
6
6
a
a

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% LOVDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAP-FXD 1uF 25 V
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FXD 2.2UF+-10% 20VDC TA

56289
56289
56289
56289
56289

150D225X9020A2-DYS
150D226X901582-OYS
2C37Z5U105M025C
150D225X9020A2-DYS
150D225X9020A2-DYS

A17C16
A17CRl
A17CR2
A17CR3
A17CR4

(1160-4832
1.aa4-0018
1.884-0046
I.901-0743
1.SOl-0033

4
5
9
1
2

1
1
1
1
1

CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
THYRISTOR-SCR 2N4186 VRRM=200
THYRISTOR-SCR VRRM=50
DIODE-PWR RECT IN4004 400V 1A DO-41
DIODE-GEN PRP iaov 200MA Do-35

04222
04713
71744
9N171

SAlOlC103KAAH
2N4186
C23OF
lN4004
IN645

A17CR5
A17CR6
A17CR7
A17CRll
A17CR12

1.901-0033
1.901-0033
1.884-0018
1.901-0033
I.901-0033

2
2
5
2
2

1
1
1
1
1

DIODE-GEN

PRP laov 200MA Do-35
DIODE-GEN PRP laov 200MA Do-35
THYRISTOR-SCR 2N4186 VRRM=200
DIODE-GEN PRP iaov 200M~ 00-35
DIODE-GEN PRP iaov 200MA Do-35

SN171
9N171
04713
SN171
9N171

lN645
lN645
2N4186
lN645
lN645

A17DSl
A17DS2
A17DS3
A17DS4
A17Fl

1990-0487
1 .990-0487
1.sso-0404
1.990-0487
i1110-0001

7
7
a
7
a

1
1
1
1
1

LED-LAMP LUM-INT=EMCD BVR=5V
LED-LAMP LUM-INT=LMCD BVR=5V
LED-LAMP LUM-INT=500UCD IF=50MA-MAX
LED-LAMP LUM-INT=2MCD BVR=5V
FUSE 1A 250V NT0 FE UL

28480
28480
28480
28480
75915

HLMP-1401
HLMP-1401
HLMP-1000
HLMP-1401
312 001

A17F2
A17F3
A17MPl
A17MP3
A17MP4

i‘110-0003
iZllO-0056

0
3

1
1

75915
75915

312 003
312 006

()520-0128
i1110-0726

7
4

2
6

FUSE 3A 250V NTD FE UL
FUSE 6A 250V NTD FE UL
NOT ASSIGNED
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
FUSEHOLDER-CLP-TYP.25D-FUSE

77250
13060

1115-0597T

A17MP5
A17MP6
A17MP7
A17MPB
A17MPS

i!190-0014
i1190-0027
i1950-0051
r: iOOO-9043
riO40-6843

1
6
8
6
2

2
1
1
1
1

WASHER-LK INTL T NO. 2 .089-IN-ID
WASHER-LK INTL T l/4 IN .256-IN-ID
NUT-HEX-DBL-CHAM l/4-28-THD .094-IN-THK
EXTRACTOR PIN
PC BOARD EXTRACTOR

78189
78189
73743
28480
28480

5000-9043
5040-6843

A17MPlO
A17MPll
A17MP12
A17MP13
A17MP14

E1151-0013
E%6701-20036
1 .200-0081
1 .205-0565
()3ao-0175

4
a
4
9
6

1
1
1
1
1

WIRE 22AWG 1X22
DIODE MOUNTING BLOCK
INSULATOR-FLG-BSHG NYLON
HEAT SINK SGL PLSTC-PWR-CS
STANDOFF-HEX .375-IN-LG 6-32-THD

92194
28480
26365
13103
83330

298
86701-20036
974 307
6079B-SE-6
2321

*Indicates factory-selected value

i902-00-00-2580
1914-00

85660-60275 Parts List
Page 1 of 4

HP Part Number 85660-60275
Al7 Positive Regulator

Reference
Designation

HP Part
Number

c
c

31
-

Description

Mfr
Code

Mfr Part
Number

A17MP15
A17Ql
A17Q2
A17Q3
A17Q4

2190-0018
1853-0012
1853-0451
1854-0404
1854-0456

1
1
1
1
1

WASHER-LK HLCL
TRANSISTOR PNP
TRANSISTOR PNP
TRANSISTOR NPN
TRANSISTOR NPN

NO. 6 .141-IN-ID
2N2904A SI TO-39 PD=GOOMk
2N3799 SI TO-18 PD=360MW
SI TO-18 PD=360MW
SI PD=65W FT=3MHZ

73734
04713
04713
04713
01295

A17Q5
A17Q6
A17Q7
A17Q8
A17QS

1854-0404
1854-0404
1853-0281
1854-0404
1853-0281

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

SI TO-18 PD=360MW
SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400Mb
SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400M!+

04713
04713
04713
04713
04713

2N2907A

A17QlO
A17Qll
A17Q12
A17Q13
A17Rl

1854-0404
1854-0404
1854-0404
1854-0477
0757-0443

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500Mh
RESISTOR 11K +-1% .125W TF TC=O+-100

04713
04713
04713
04713
19701

2N2222A
SFR25H

A17R2
A17R3
A17R4
A17R5
A17R6

0757-0401
0811-1659
0757-041s
0757-0443
0757-0394

(
t
(
(
(

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
11502
19701
19701
19701

SFR25H
SPH
SFR25H
SFR25H
SFR25H

A17R7
A17R8
A17RS
A17RlO
A17Rll

0698-3150
0698-3442
0698-8465
0698-6835
0757-0280

c
z
f
(
:

1
1
1
1
1

RESISTOR 2.37K 1% .125W TF TC=O+-100
RESISTOR 237 1% .125W TF TC=O+-100
RESISTOR 7.15K +-0.5x .125W TF TC=O+-50
RESISTOR 3.16K +-0.5% .125W TF TC=O+-50
RESISTOR IK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
5033R
5033R
SFR25H

A17R12
A17R13
A17R14
A17R15
A17R16

0757-0278
0683-0275
0698-3444
0757-0346
0757-0278

I
c

1
1
1
1
1

RESISTOR 1.78K +-I% .125W TF TC=O+-100
RESISTOR 2.7 5% .25W CF TC=O-400
RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
RESISTOR 1.78K +-1% .125W TF TC=O+-100

19701
2M627
19701
91637
19701

SFR25H
R-25J
SFR25H
CMF-55-1, T-l
SFR25H

A17R17
A17R18
A17RlS
A17R20
A17R21

0698-3162
0757-0442
0757-0438
0698-0083
0757-0465

(
c

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

46.4K 1% .125W TF TC=O+-100
10K +-1X .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R22
A17R23
A17R24
A17R25
A17R26

0757-0443
0757-0438
0757-039s
0757-0280
0757-0401

(

:
(

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

11K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
82.5 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R27
A17R28
A17R29
A17R30
A17R31

1811-1661
)811-1661
1811-1661
1757-0419
1757-0420

2
2
2
0
3

1
1
1
1
1

tESISTOR
tESISTOR
{ESISTOR
tESISTOR
{ESISTOR

.39 +-5% 2W PWI TC=O+-800
.39 +-5% 2W PWI TC=O+-800
.39 +-5x 2W PWI TC=O+-800
681 +-1% .125W TF TC=O+-100
750 +-1% .125W TF TC=O+-100

11502
11502
11502
19701
19701

SPH
SPH
SPH
SFR25H
SFR25H

A17R32
A17R33
A17R34

1698-3154
1757-0280
16984466

0
3
7

1
1
1

tESISTOR 4.22K 1% .125W TF TC=O+-100
tESISTOR IK +-1X .125W TF TC=O+-100
CESISTOR 942 +-0.5% .125W TF TC=O+-50

19701
19701
19701

SFR25H
SFR25H
5033R

1
2
c

:
I
t

c

NPN
NPN
PNP
NPN
PNP

100 +-1% .125W TF TC=O+-100
.27 +-5% 2W PWI TC=O+-800
681 +-1% .125W TF TC=O+-100
11K +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

-

85660-60275 Parts List
Page 2 of 4

*Indicates factory-selected value

2N2904A

TIP41A

2N2907A

HP Part Number 85660-60275
Al7 Positive Regulator
Reference
Designatior

HP Part
Number

C

Mfr
Code

Description

D a;ltl
-

Mfr Part
Number

A17R35
A17R36

0698-6835
0698-6835

0
0

1

1

RESISTOR 3.16K +-0.5% .125W TF TC=O+-50
RESISTOR 3.16K +-0.5% .125W TF TC=O+-50

19701
19701

5033R
5033R

A17R37
A17R38
A17R39
A17R40
A17R41

0683-0275
0698-3444
0757-0401
0757-0346
0698-3150

9
1
0
2
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
100 +-1X .125W TF TC=O+-100
10 +-1X .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100

2M627
19701
19701
91637
19701

R-25J
SFR25H
SFR25H
CMF-55-1, T-l
SFR25H

A17R42
A17R43
A17R44
A17R45
A17R46

0757-0418
0698-3156
0757-0459
0698-3150
0698-3150

9
2
8
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

619 +-1% .125W TF TC=O+-100
14.7K 1% .125W TF TC=O+-100
56.2K +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R47
A17R48
A17R49
A17R50
A17R51

0757-0442
0698-3444
0698-8464
2100-3095
0757-0280

9
1
5
5
3

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 12.6K +-0.5% .125W TF TC=O+-50
RESISTOR-TRMR 200 10% TKF SIDE-ADJ 17-TR
RESISTOR 1K +-1% .125W TF TC=O+-100

19701
19701
19701
73138
19701

SFR25H
SFR25H
5033R
89PR200
SFR25H

A17R52
A17R53
A17R54
A17R55
A17R56

0698-0084
0698-4405
0757-0280
0757-0401
0698-3157

9
6
3
0
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.15K 1% .125W TF TC=O+-100
107 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
100 +-1X .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100

19701
91637
19701
19701
19701

SFR25H
CMF-55-1. T-l
SFR25H
SFR25H
SFR25H

A17R57
A17R58
A17R59
A17R60
A17R62

0757-0438
0698-3634
0757-0459
0757-0438
0757-0346

3
1
8
3
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-1% .125W TF TC=O+-100
470 5% 2W MO TC=O+-200
56.2K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
11502
19701
19701
91637

SFR25H
GS-3
SFR25H
SFR25H
CMF-55-1, T-l

A17R63
A17R64
A17R65
A17R66
A17R67

0698-3444
0757-0280
0757-0459
0757-0438
0757-0280

1
3
8
3
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
1K +-1X .125W TF TC=O+-100
56.2K +-1X .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R68
A17R69
A17RTl
A17TPl
A17TP2

0757-0416
0698-3155
0837-0126
1251-0600
1251-0600

7
1
6
0
0

1
1
1
1
1

RESISTOR 511 +-1X .125W TF TC=O+-100
?ESISTOR 4.64K 1% .125W TF TC=O+-100
THERMISTOR DISC lK-OHM TC=-4.4%/C-DEG
CONNECTOR-SGL CDNT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
27264
27264

SFR25H
SFR25H
STD-0163
16-06-0034
16-06-0034

A17TP3
A17TP4
A17TP5
A17TP6
A17TP7

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL
"ONNECTOR-SGL
CONNECTOR-SGL
CONNECTOR-SGL
EONNECTOR-SGL

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A17TP8
A17TP9
A17Ul
A17U2
A17U3

1251-0600
1251-0600
1820-0223
1820-0223
1826-0161

0
0
0
0
7

1
1
1
1
1

:ONNECTOR-SGL
:ONNECTOR-SGL
IC OP AMP GP
IC OP AMP GP
IC OP AMP GP

CONT PIN 1.14-MM-BSC-SZ SQ
CONT PIN 1.14-MM-BSC-SZ SQ
TO-99 PKG
TO-99 PKG
QUAD 14-DIP-P PKG

27264
27264
27014
27014
27014

16-06-0034
16-06-0034
LM301AH
LM301AH
LM324N

CONT
CONT
CONT
CONT
CONT

PIN
PIN
PIN
PIN
PIN

1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ
1.14-MM-BSC-SZ

-

*Indicates factory-selected value

85660-60275 Parts List
Page 3 of 4

HP Part Number 85660-60275
Al7 Positive Regulator
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

A17VRl
A17VR2
A17VR3
A17VR4
A17VR5

1902-3171
1902-0686
1902-3252
1902-0049
1902-0686

7
3
5
2
3

1
1
1
1
1

DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR

11V 5% DO-35 PD=.4W TC=+.062%
6.2V 2% DO-7 PD=.4W TC=+.002%
22.6V 2% DO-35 PD=.4W
6.19V 5% DO-35 PD=.4W
6.2V 2% DO-7 PD=.4W TC=+.002%

04713
04713
04713
04713
04713

A17VR7
A17VR8
A17VR9

1902-3203
1902-3172
1902-0049

6
8
2

1
1
1

DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR 11V 2% DO-35 PD=.4W TC=+.062%
DIODE-ZNR 6.19V 5% DO-35 PD=.4W

04713
04713
04713

85660-60275 Parts List
Page 4 of 4

*Indicates factory-selected value

Mfr Part
Number
lN825

lN825

HP Part Number 85660-60323
Al7 Positive Regulator
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

Al7

85660-60323

8

1

BOARD ASSEMBLY, POSITIVE REGULATOR
(SERIAL PREFIX: 2747~)

A17Cl
A17C2
A17C3

0180-2205
0180-0116
0180-1746

3
51

A17C4
A17C5

0160-5271
0180-0228

7
6

1
1
1
1
1

CAPACITOR-FXD .33UF+-10% 35VDC TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 15UF+-10% EOVDC TA
CAPACITOR-FXD 30PF +-5% 1OOVDC CER 0+-30
CAPACITOR-FXD 22UF+-10% 15VDC TA

56289
56289
56289
04222
56289

1500334X9035A2-DYS
150D685X9035B2-DYS
150D156X9020B2-DYS
SA102A300JAAH
150D226X9015B2-DYS

A17C6
A17C7

0180-0116
0160-4831

A17C8
A17C9
A17ClO

0160-4834
0160-4834
0160-5271

1
3
6
67

1
1
1
1
1

CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 4700PF +-lo% 1OOVOC CER
CAPACITOR-FXD .047UF +-lo% 1OOVDC CER
CAPACITOR-FXD .047UF +-lo% 1OOVDC CER
CAPACITOR-FXD 30PF +-5% 1OOVDC CER 0+-30

56289
04222
04222
04222
04222

150D685X9035B2-DYS
SAlOlC472KAAH
SA301C473KAAH
SA301C473KAAH
SA102A300JAAH

A17Cll
A17C12
A17C13
A17C14
A17C15

0180-0197
0180-0228
0160-4892
0180-0197
0180-0197

8
66

1
1
1
1
1

CAPACITOR-FXD 2.2UF+-10% EOVDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAP-FXD 1uF 25 V
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FXD 2.2UF+-10% EOVDC TA

56289
56289
56289
56289
56289

1500225X9020A2-DYS
150D226X901582-DYS
2C37Z5U105M025C
150D225X9020A2-DYS
150D225X9020A2-DYS

A17C16
A17CRl
A17CR2
A17CR3
A17CR4

0160-4832
1884-0018
1884-0046
1901-0743
1901-0033

4
5
9
1
2

1
1
1
1
1

CAPACITOR-FXO .OlUF +-10X 1OOVDC CER
THYRISTOR-SCR 2N4186 VRRM=200
THYRISTOR-SCR VRRM=50
DIODE-PWR RECT lN4004 400V 1A DO-41
DIODE-GEN PRP 18OV 200MA DO-35

04222
04713
71744
9N171

SAlOlC103KAAH
2N4186
C23OF
IN4004
lN645

A17CR5
A17CR6
A17CR7
A17CRll
A17CR12

1901-0033
1901-0033
1884-0018
1901-0033
1901-0033

2
2
5
2
2

1
1
1
1
1

DIODE-GEN PRP
DIODE-GEN PRP
THYRISTOR-SCR
DIODE-GEN PRP
DIODE-GEN PRP

9N171
9N171
04713
9N171
9N171

lN645
IN645
2N4186
lN645
IN645

A17DSl
A17DS2
A17DS3

1990-0487
1990-0404

7
8

A17DS4
A17Fl

1990-0487
2110-0001

87

1
1
1
1
1

LED-LAMP LUM-INT=2MCD BVR=5V
LED-LAMP LUM-INT=EMCD 8VR=5V
LED-LAMP LUM-INT=500UCD IF=50MA-MAX
LED-LAMP LUM-INT=EMCD BVR=5V
FUSE 1A 250V NTD FE UL

28480
28480
28480
28480
75915

HLMP-1401
HLMP-1401
HLMP-1000
HLMP-1401
312 001

A17F2
A17F3
A17MPl
A17MP3
A17MP4

2110-0003
2110-0056

0
3

1
1

75915
75915

312 003
312 006

0520-0128
2110-0726

7
4

2
6

FUSE 3A 250V NTD FE UL
FUSE 6A 250V NTD FE UL
NOT ASSIGNED
SCREW-MACH 2-56 .25-IN-LG PAN-HD-POZI
FUSEHDLDER-CLP-TYP.25D-FUSE

77250
13060

1115-0597T

A17MP5
A17MP6

2190-0014
2190-0027

A17MP7
A17MP8
A17MP9

2950-0051
5000-9043
5040-6843

1
6
8
6
2

2
1
1
1
1

WASHER-LK INTL T NO. 2 .089-IN-ID
WASHER-LK INTL T l/4 IN .256-IN-ID
NUT-HEX-DBL-CHAM l/4-28-THD .094-IN-THK
EXTRACTOR PIN
PC BOARD EXTRACTOR

78189
78189
73743
28480
28480

5000-9043
5040-6843

A17MPlO
A17MPll
A17MP12

8151-0013
86701-20036
1200-0081
1205-0565
0380-0175

4
48
9

1
1
10
1
1

WIRE 22AWG 1X22
DIODE MOUNTING BLOCK
INSULATOR-FLG-BSHG NYLON
HEAT SINK SGL PLSTC-PWR-CS
STANDOFF-HEX .375-IN-LG 6-32-THD

92194
28480
26365
13103
83330

298
86701-20036
974 307
6079B-SE-6
2321

A17MP13
A17MP14

88

6

180V 200MA DO-35
180V 200MA DO-35
214186 VRRM=200
180V 200MA DO-35
180V 200MA DO-35

*Indicates factoy-selected value

28480

85660-60323

1902-00-00-2580
1914-00

85660-60323 Parts List
Page 1 of 4

HP Part Number 85660-60323

Reference
Designation

HP Part
Number

C

D

Al7 Positive Regulator

a
-

Description

Mfr
Code

Mfr Part
Number

A17MP15
A17Ql
A1792
A17Q3
A17Q4

2190-0018
1853-0012
1853-0451
1854-0404
1854-0456

5
4
5
0
2

1
1
1
1
1

WASHER-LK HLCL
TRANSISTOR PNP
TRANSISTOR PNP
TRANSISTOR NPN
TRANSISTOR NPN

NO. 6 .141-IN-ID
2N2904A SI TO-39 PD=GOOMW
2N3799 SI TO-18 PO=360MW
SI TO-18 PD=360MW
SI PD=65W FT=3MHZ

73734
04713
04713
04713
01295

A17Q5
A17Q6
Al7Q7
A1798
A17Q9

1854-0404
1854-0404
1853-0281
1854-0404
1853-0281

0
0
9
0
9

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

SI TO-18 PD=360MW
SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400MW
SI TO-18 PD=360MW
2N2907A SI TO-18 PD=400MW

04713
04713
04713
04713
04713

A17QlO
A17Qll
A17Q12
A17913
A17Rl

1854-0404
1854-0404
1854-0404
1854-0477
0757-0443

0
0
0
7
0

1
1
1
1
1

TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW
RESISTOR 11K +-1% .125W TF TC=O+-100

04713
04713
04713
04713
19701

2N2222A
SFR25H

A17R2
A17R3
A17R4
A17R5
A17R6

0757-0401
0811-1659
0757-0419
0757-0443
0757-0394

0
8
0
0
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

100 +-I% .125W TF TC=O+-100
.27 +-5% 2W PWI TC=O+-800
681 +-1X .125W TF TC=O+-100
11K +-1% .125W TF TC=O+-100
51.1 +-1% .125W TF TC=O+-100

19701
11502
19701
19701
19701

SFR25H
SPH
SFR25H
SFR25H
SFR25H

A17R7
Al7R8
A17R9
A17RlO
A17Rll

0698-3150
0698-3442
0698-8465
0698-6835
0757-0280

6
9
6
0
3

1
.l
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.37K 1% .125W TF TC=O+-100
237 1% .125W TF TC=O+-100
7.15K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
1K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
5033R
5033R
SFR25H

A17R12
A17R13
A17R14
A17R15
A17R16

0757-0278
0683-0275
0698-3444
0757-0346
0757-0278

9
9
1
2
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1.78K +-1% .125W TF TC=O+-100
2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
10 +-I% .125W TF TC=O+-100
1.78K +-I% .125W TF TC=O+-100

19701
2M627
19701
91637
19701

SFR25H
R-25J
SFR25H
CMF-55-l. T-l
SFR25H

A17R17
A17R18
A17R19
A17R20
A17R21

0698-3162
0757-0442
0757-0438
0698-0083
0757-0465

0
9
3
8
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

46.41: 1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
5.11K +-1X .125W TF TC=O+-100
1.96K 1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

Al7R22
A17R23
A17R24
A17R25
A17R26

0757-0443
0757-0438
0757-0399
0757-0280
0757-0401

0
3
5
3
0

1
1
1
1
1

?ESISTOR
XESISTOR
RESISTOR
RESISTOR
RESISTOR

11K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
82.5 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R27
A17R28
A17R29
A17R30
A17R31

0811-1661
0811-1661
0811-1661
0757-0419
0757-0420

2
2
2
0
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

.39
.39
.39
681
750

11502
11502
11502
19701
19701

SPH
SPH
SPH
SFR25H
SFR25H

A17R32
A17R33
A17R34

0698-3154
0757-0280
0698-8466

0
3
7

1
1
1

RESISTOR 4.22K 1% .125W TF TC=O+-100
RESISTOR 1K +-1X .125W TF TC=O+-100
RESISTOR 942 +-0.5% .125W TF TC=O+-50

19701
19701
19701

SFR25H
SFR25H
5033R

NPN
NPN
PNP
NPN
PNP

+-5%
+-5%
+-5%
+-I%
+-1%

2W PWI TC=O+-800
2W PWI TC=O+-800
2W PWI TC=O+-800
.125W TF TC=O+-100
.125W TF TC=O+-100

-

8566060323 Parts List
Page 2 of 4

*Indicates factory-selected value

2N2904A

TIP4lA

2N2907A
2N2907A

HP Part Number 85660-60323
Al7 Positive Regulator
Reference
Designation

HP Part C
Number D Qty

Mfr
Code

Description

Mfr Part
Number

A17R35
A17R36

0698-6835
0698-6835

0
0

1
1

RESISTOR 3.16K +-0.5% .125W TF TC=O+-50
RESISTOR 3.16K +-0.5% .125W TF TC=O+-50

19701
19701

5033R
5033R

A17R37
A17R38
A17R39
A17R40
A17R41

0683-0275
0698-3444
0757-0401
0757-0346
0698-3150

9
1
0
62

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100

2M627
19701
19701
91637
19701

R-25J
SFR25H
SFR25H
CMF-55-1, T-l
SFR25H

A17R42
A17R43
Al7R44
A17R45
A17R46

0757-0418
0698-3156
0757-0459
0698-3150
0698-3150

9
2
8
6
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

619 +-1% .125W TF TC=O+-100
14.7K 1% .125W TF TC=O+-100
56.2K +-1X .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
2.371: 1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R47
A17R48
A17R49
A17R50
A17R51

0757-0442
0698-3444
0698-8464
2100-3095
0757-0280

9
1
5
5
3

1
1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 12.6K +-0.5x .125W TF TC=O+-50
RESISTOR-TRMR 200 10% TKF SIDE-ADJ 17-TR
RESISTOR 1K +-1% .125W TF TC=O+-100

19701
19701
19701
73138
19701

SFR25H
SFR25H
5033R
89PR200
SFR25H

A17R52
A17R53
Al7R54

0698-0084
0698-4405
0757-0280

9
63

A17R55
A17R56

0757-0401
0698-3157

0
3

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.15K 1% .125W TF TC=O+-100
107 +-1X .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100

19701
91637
19701
19701
19701

SFR25H
CMF-55-l. T-l
SFR25H
SFR25H
SFR25H

A17R57
A17R58
A17R59
A17R60
A17R62

0757-0438
0698-3634
0757-0459
0757-0438
0757-0346

3
1
8
3
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-I% .125W TF TC=O+-100
470 5% 2W MO TC=O+-200
56.2K +-1% .125W TF TC=O+-100
5.11K +-1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100

19701
11502
19701
19701
91637

SFR25H
GS-3
SFR25H
SFR25H
CMF-55-l. T-l

A17R63
A17R64
A17R65
A17R66
A17R67

0698-3444
0757-0280
0757-0459
0757-0438
0757-0280

1
3
8
3
3

1
1
1
1
1

RESISTOR 316 1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 56.2K +-1% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 1K +-1X .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A17R68
A17R69
A17RTl
A17TPl
A17TP2

0757-0416
0698-3155
0837-0126
1251-0600
1251-0600

7
1
6
0
0

1
1
1
1
1

RESISTOR 511 +-1% .125W TF TC=O+-100
RESISTOR 4.64K 1% .125W TF TC=O+-100
THERMISTOR DISC lK-OHM TC=-4.4%/C-DEG
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
27264
27264

SFR25H
SFR25H
STD-0163
16-06-0034
16-06-0034

A17TP3
A17TP4
A17TP5
A17TP6
A17TP7

1251-0600
1251-0600
1251-0600
1251-0600
1251-0600

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
27264

16-06-0034
16-06-0034
16-06-0034
16-06-0034
16-06-0034

A17TP8
A17TP9
A17Ul
A17U2
A17U3

1251-0600
1251-0600
1820-0223
1820-0223
1826-0161

0
0
0
0
7

1
1
1
1
1

CONNECTOR-SGL
CONNECTOR-SGL
IC OP AMP GP
IC OP AMP GP
IC OP AMP GP

SQ
SQ

27264
27264
27014
27014
27014

16-06-0034
16-06-0034
LM301AH
LM301AH
LM324N

CONT PIN 1.14-MM-BSC-SZ
CONT PIN 1.14-MM-BSC-SZ
TO-99 PKG
TO-99 PKG
QUAD 14-DIP-P PKG

*Indicates factoy-selected value

8566060323 Parts List
Page 3 of 4

HP Part Number 85660-60323
Al7 Positive Regulator
Reference
Designation

HP Part
Number

C
c

3

Description

Mfr
Code

A17VRl
A17VR2
A17VR3
A17VR4
A17VR5

1902-3171
1902-0686
1902-3252
1902-0049
1902-0686

j
:
t
i
:

1
1
1
1
1

DIODE-ZNR 11V 5% DO-35 PD=.4W TC=+.062%
DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%
DIODE-ZNR 22.6V 2% DO-35 PD=.4W
DIODE-ZNR 6.19V 5% DO-35 PD=.4W
DIODE-ZNR 6.2V 2% DO-7 PD=.4W TC=+.002%

0471:
0471:
0471:
0471:
0471:

Al7VR7
A17VR8
A17VR9

1902-3203
1902-3172
1902-0049

E
E
i

1
1
1

DIODE-ZNR 14.7V 5% DO-35 PD=.4W
DIODE-ZNR 11V 2% DO-35 PD=.4W TC=+.062%
DIODE-ZNR 6.19V 5% DO-35 PD=.4W

0471;
04712
04712

-

85660-60323 Parts List
Page 4 of 4

*Indicates factoy-selected value

Mfr Part
Number
lN825

lN825

8750
OS3
+2ov
THERMAL
OS4
A D J U S T S H U T D O W N f12V
I
I
,

P I

23

Y---4

44

H P P / N 1251-5177
H P P / N 0160-4832
H P P / N 0757-0442

Al7 Positive Regulator Component Locations, 85660-60174

;
d
”zc,a*n!T
+ 5
P

+ +a
2 t: ;
I7
Cl5 +
R64
R65
F3

Em:4
Pm
:q
Q

27Z+a
:zg
In <

R50
ADJUST

OS3
THERMAL
SHUT DOWN

DS4
+12”

CB
” u?NW
p$;
oaz;:

F.3 (6A)
iFTGi$$
pqp4
~~oocouc~oc~nr~uu~ou:o~~~
1
23

PI

22
44

Al7 Positive Regulator Component Locations, 85660-60323

Al8
Al8 Negative Regulator, Circuit Description
Al8 Negative Regulator provides -5.2 V, -10 V, and -40 V regulated voltages to the
instrument. All three supplies derive their reference from the +20 V supply on the Al7
Positive Regulator. The relationship of Al8 to A8 Rectifier, Al7 Positive Regulator, and A23
Motherboard is shown on the A8 schematic.

-10 V Regulator @
The -10 V supply is referenced to the +20 V supply by a resistor divider consisting of R5,
R6, and R7 connected between the two supplies. The voltage at the junction of R5 and R6 is
nominally 0 V. Any error is amplified by U2 to drive the series-pass transistor A23Ql. The
entire unregulated portion of the supply, including the rectifier diodes and filter capacitor, is
floating; thus the collector of A23Ql is typically i-15 V. Current-sensing resistors Rl and R23
are connected between the emitter of A23Ql and ground. These resistors, along with R2, R3,
CRl, and Ql, form a current foldback protection network.
Overvoltage protection is provided by the -10 V crowbar BJ consisting of VR2 and CR26.
Further protection is provided by fuse F3. LED DS2 indicates the presence of an output
voltage.

-5.2 V Regulator @
The -5.2 V supply is also referenced to the +20 V supply by a resistor divider consisting of
R37, R38, and R39 connected between the two supplies. This supply is a double-regulated
supply, as its input is in the regulated output from the -10 V supply. Error amplifier Ul
drives the pass transistor Q2 via Q3. R32 and R33 are dropping resistors, so the power
dissipation in Q2 is not excessive. R34, R12, R32, and Q4 provide current foldback protection.
Further protection is provided by Fl. Overvoltage protection is provided by the -5.2 V
crowbar @I consisting of VR4 and CR27. LED DS3 indicates the presence of an output
voltage.

-40 V Regulator
The -40 V supply is referenced to the +2OV supply by the voltage divider consisting of R24,
R25, and R26, designed so that the input to the error amplifier U3 is at 0 V. The output
of the error amplifier drives the Darlington connection of Q5 and the series-pass transistor
A23Q2. The input to the supply is floating, so the collector of A23Q2 is typically at +lO V.
Foldback current protection is provided by R17, R18, R19, and Q6. Further current protection
is provided by the -40 V crowbar @ consisting of VR3 and CR25. The presence of an output
voltage is indicated by LED DSl.

A18 1

RF Section Internal Fuse Replacement
Note

For location of hardware and cables referred to in this procedure, see Figure 1.

Warning

Remove ac line cord from both instruments before proceeding with this
procedure.

1. Position instrument upside-down as shown in view A.
2. Remove feet @ from rear of RF Section by removing screws @ shown in view A.
3. Remove bottom cover by loosening screw @ and pulling cover toward rear of instrument.
4. Location of fuses is shown in view B.

\

Fl

+22V
*

Fl +12V 1A
F 2 +2OV 3 A
F 3
t5.2V 6A

1A
,

RE& I ER

Figure 1. Internal Fuse Replacement

2 A18

2.5A

F2 - 4 0 V 1.5A
F 3 - l O V 5 A

-

-

Al7
POS REG

VIEW B

VIEW A

Fl -5.2V

Al8
NEG REG

HP Part Number 85660-60137
A18 Negative Regulator
Reference
Designation

Description

HP Part c
Number
D QtY

Mfr
Code

Mfr Part
Number

Al8

85660-60137

2

1

BOARD ASSEMBLY, NEGATIVE REGULATOR
(SERIAL PREFIXES: 2410~-2618~)

28480

85660-60137

A18Cl
A18C2
A18C3
A18C4
A18C5

0160-2199
0180-0228
0180-1746
0160-2199
0180-0228

2
6
5
2
6

3
1
1
1

CAPACITOR-FXO 30PF +-5%
CAPACITOR-FXD 22UF+-10%
CAPACITOR-FXD 15UF+-10%
CAPACITOR-FXD 30PF +-5%
CAPACITOR-FXD 22UF+-10%

28480
56289
56289
28480
56289

0160-2199
1500226X901582
150D156X9020B2
0160-2199
1500226X9015B2

A18C6
A18C7
A18C8
A18C9
A18ClO

0160-2199
0180-0228
0180-1731
0160-4256
0180-1746

2
6
8
6
5

1
1
1
3
1

CAPACITOR-FXD 30PF +-5% 300VDC MICA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 4.7UF+-10% 50VDC TA
CAPACITOR-FXD .047UF +-20% 200VDC CER
CAPACITOR-FXD 15UF+-10% ZOVDC TA

28480
56289
56289
16546
56289

0160-2199
150D226X9015B2
1500475X905082
CW30 8 473M
150D156X9020B2

A18Cll
A18C12
A18C13
A18C14
A18C15

0160-4892
0160-4256
0160-4892
0160-4892
0160-4256

6
6
6
6
6

1

CAP-FXD 1uF 25 V
CAPACITOR-FXD .047UF +-20% 200VDC CER
CAP-FXO 1uF 25 V
CAP-FXD 1uF 25 V
CAPACITOR-FXD .047UF +-20% ZOOVDC CER

56289
16546
56289
56289
16546

2C37Z5U105M025C
CW30 B 473M
2C37Z5U105M025C
2C37Z5U105M025C
CW30 B 473M

A18C16
A18CRl
A18CR2
A18CR3
A18CR4

0180-0100
1901-0033
1901-0033
1901-0033
1901-0033

3
2
2
2
2

1
1
1
1
1

CAPACITOR-FXD
DIODE-GEN PRP
DIODE-GEN PRP
DIODE-GEN PRP
DIODE-GEN PRP

56289
9N171
9N171
9N171
9N171

150D475X903582
lN645
lN645
lN645
lN645

A18CR5
A18CR6
A18CR7
A18CR8
A18CR9

1901-0033
1901-0033
1901-0033
1901-0662
1901-0662

2
2
2
3
3

1
1
1
1
1

DIODE-GEN
DIODE-GEN
DIODE-GEN
DIODE-PWR
DIODE-PWR

9N171
9N171
9N171
04713
04713

lN645
lN645
lN645
MR751
MR751

A18CR12

1901-0662

3

1

DIODE-PWR RECT 1OOV 6A

04713

MR751

A18CR15
A18CR25
A18CR26

1901-0743
1884-0018
1884-0018

1
5
5

1
1
1

DIODE-PWR RECT lN4004 400V 1A DO-41
THYRISTOR-SCR 2N4186 VRRM=200
THYRISTOR-SCR 2N4186 VRRM=EOO

71744
04713
04713

lN4004
2N4186
2N4186

A18CR27
A18DSl
A18DS2
A18DS3
A18Fl

1884-0018
1990-0487
1990-0487
1990-0487
2110-0083

5
7
7
7
6

1
1
1
1
1

THYRISTOR-SCR 2N4186 VRRM=200
LED-LAMP LUM-INT=2MCD BVR=5V
LED-LAMP LUM-INT=2MCD BVR=5V
LED-LAMP LUM-INT=ZMCD BVR=5V
FUSE 2.5A 250V NTD FE UL

04713
28480
28480
28480
75915

2N4186
HLMP-1401
HLMP-1401
HLMP-1401
312 02.5

A18F2
A18F3
A18MP3
A18MP4
A18MP5
A18Ql
A1802
A18Q3

2110-0043
2110-0010
2110-0269
5000-9043
5040-6843
1854-0404
1854-0441
1853-0001

8
9
0
6
2
0
5
1

1
1
6
1
1
1
1
1

FUSE 1.5A 250V NTD FE UL
FUSE (INCH) 5~ 250~ NTD FE UL
FUSEHOLDER-CLIP TYPE.Z5D-FUSE
EXTRACTOR PIN
EXTRACTOR
TRANSISTOR NPN SI TO-18 PD=360MW
TRANSISTOR NPN SI PD=5.8W FT=800KHZ
TRANSISTOR PNP SI TO-39 PD=GOOMW

75915
75915
28480
28480
28480
04713
28480
27014

312 01.5
312 005
2100-0269
5000-9043
5040-6843

A18Q4
A18Q5

1853-0007
1854-0271

7
9

1
1

TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW
TRANSISTOR NPN SI TO-39 PO=lW FT=150MHZ

04713
04713

2N3251

1
1

4.7UF+-10%
180V 200MA
180V 200MA
180V 200MA
180V 200MA

PRP 180V
PRP 180V
PRP 180V
RECT 1OOV
RECT 1OOV

300VDC MICA
15VDC TA
20VDC TA
300VDC MICA
15VDC TA

35VDC TA
DO-35
DO-35
DO-35
DO-35

200MA DO-35
200MA DO-35
200MA DO-35
6A
6A

*Indicates factory-selected value

1854-0441

85660-60137 Parts List
Page 1 of 3

HP Part Number 85660-60137
A18 Negative Regulator
Reference
Designation

HP Part
Number

c

D

JtY
-

Description

Mfr
Code

Mfr Part
Number

A18Q6
A18Rl
A18R2

1854-0404
0811-1552
0757-0421

0
0
4

1
1
1

TRANSISTOR NPN SI TO-18 PO=360MW
RESISTOR .56 +-5% 2W PWI TC=O+-800
RESISTOR 825 +-1% .125W TF TC=O+-100

04713
11502
19701

SPH
SFR25H

A18R3
A18R4
A18R5
A18R6
A18R7

0757-0438
0757-0280
0698-6835
0698-6835
0698-6835

3
3
0
0
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50

19701
19701
19701
19701
19701

SFR25H
SFR25H
5033R
5033R
5033R

A18R8
A18R9
AlaRlO
A18Rll
A18R12

0683-0275
0698-3444
0757-0346
0757-0280
0757-0428

9
1
2
3
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
10 +-I% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100

2M627
19701
91637
19701
19701

R-25J
SFR25H
CMF-55-1, T-l
SFR25H
SFR25H

A18R13
A18R14
A18R15
A18R16
A18R17

0698-3447
0698-3444
0757-0346
0698-3444
0811-1665

4
1
2
1
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

422 1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
.82 +-5% 2W PWI TC=O+-800

19701
19701
91637
19701
11502

SFR25H
SFR25H
CMF-55-1. T-l
SFR25H
SPH

A18R18
A18R19
A18R20
A18R21
A18R22

0757-0280
0698-3449
0757-0280
0757-0442
0757-0442

3
6
3
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
28.7K 1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

A18R23
A18R24
A18R25
A18R26
A18R27

0811-1552
0698-8464
0698-6835
0698-6835
D683-0275

0
5
0
0
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

.56 +-5% 2W PWI TC=O+-800
12.6K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
2.7 5% .25W CF TC=O-400

11502
19701
19701
19701
2M627

SPH
5033R
5033R
5033R
R-25J

AlBR28
A18R29
A18R30
A18R31
A18R32

il698-3444
3757-0346
3698-3150
3698-3150
3812-0066

1
2
6
6
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
.33 +-5% 2W PWI TC=O+-800

19701
91637
19701
19701
11502

SFR25H
CMF-55-1, T-l
SFR25H
SFR25H
SPH

A18R33
A18R34
A18R35
A18R36
A18R37

3812-0066
3812-0066
3757-0280
3757-0441
3698-6835

1
1
3
a
0

1
1
1
1
1

RESISTOR .33 +-5% 2W PWI TC=O+-800
RESISTOR .33 +-5% 2W PWI TC=O+-800
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 8.25K +-1% .125W TF TC=O+-100
RESISTOR 3.16K +-0.5% .125W TF TC=O+-50

11502
11502
19701
19701
19701

SPH
SPH
SFR25H
SFR25H
5033R

A18R38
A18R39
A18R40
A18R43
A18R44

3698-7050
3698-6853
3683-0275
3757-0401
3757-0401

3
2
9
0
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
2M627
19701
19701

5033R
5033R
R-25J
SFR25H
SFR25H

A18R45
A18R46
A18R47
A18TPl
A18TP2

3698-3435
3757-0280
1757-0401
1251-0600
1251-0600

0
3
0
0
0

1
1
1
1
1

RESISTOR 38.3 1% ,125~ TF Tc=o+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 100 +-1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
19701
27264
27264

SFR25H
SFR25H
SFR25H
16-06-0034
16-06-0034

4.48K +-0.5% .125W TF TC=O+-50
7.68K +-0.5% .125W TF TC=O+-50
2.7 5% .25W CF TC=O-400
100 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

-

85660-60137 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60137
Al8 Negative Regulator
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

AlETP3
AlETP4
A18TP5
AlEUl
AlEU2

1251-0600
1251-0600
1251-0600
1820-0223
1820-0223

0
0
0
0
0

1
1
1
1
I

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
IC OP AMP GP TO-99 PKG
IC OP AMP GP TO-99 PKG

27264
27264
27264
27014
27014

16-06-0034
16-06-0034
16-06-0034
LM301AH
LM301AH

AlEU3
A18VRl
AlEVR2
A18VR3
A18VR4

1820-0223
1902-0025
1902-3171
1902-3330
1902-0049

0

i
1
1
1
1

IC OP AMP
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR

27014
04713
04713
04713
04713

LM301AH

4
7
0
2

GP TO-99 PKG
IOV 5% DO-35 PO=.4W TC=+.06%
11V 5% DO-35 PO=.4W TC=+.062%
44.2V 2% DO-35 PO=.4W
6.19V 5% DO-35 PO=.4W

*Indicates factory-selected value

85660-60137 Parts List
Page 3 of 3

HP Part Number 85660-60289
A18 Negative Regulator
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

A18

85660-60289

5

1

AlECl
A18C2
AlEC3
A18C4
A18C5

0160-5271
0180-0228
0180-1746
0160-5271
0180-0228

7
6
5
7
6

1
1
1
1
1

BOARD ASSEMBLY NEGATIVE
(SERIAL PREFIX: 2627~)
CAPACITOR-FXO 30PF +-5%
CAPACITOR-FXO 22UF+-10x
CAPACITOR-FXO 15UF+-10%
CAPACITOR-FXO 30PF +-5%
CAPACITOR-FXO 22UF+-10%

1OOVOC CER 0+-30
15VOC TA
LOVOC TA
1OOVOC CER 0+-30
15VOC TA

28480
04222
56289
56289
04222
56289

85660-60289
SA102A300JAAH
1500226X901582-OYS
1500156X9020B2-OYS
SA102A300JAAH
1500226X901582-OYS

AlEC6
A18C7
Alaca
AlEC9
A18ClO

0160-5271
0180-0228
0180-1731
0160-4834
0180-1746

7
6
a
6
5

1
I
1
1
1

CAPACITOR-FXO 30PF +-5% IOOVOC CER 0+-30
CAPACITOR-FXO 22UF+-10% 15VOC TA
CAPACITOR-FXO 4.7UF+-10% 50VOC TA
CAPACITOR-FXO .047UF +-lo% 1OOVOC CER
CAPACITOR-FXO 15UF+-10% ZOVOC TA

04222
56289
56289
04222
56289

SA102A300JAAH
1500226X9015B2-OYS
1500475x905082-0Ys
SA301C473KAAH
1500156X9020B2-OYS

AlECll
AlEC12
A18C13
AlEC14
AlEC15

0160-4892
0160-4834
0160-4892
0160-4892
0160-4834

6
6
6
6
6

1
1
1
1
1

CAPACITOR-FXO 1uF 25 V
CAPACITOR-FXO .047UF +-lo% 1OOVOC CER
CAPACITOR-FXO 1uF 25 V
CAPACITOR-FXO IuF 25 V
CAPACITOR-FXO .047UF +-lo% 1OOVOC CER

56289
04222
56289
56289
04222

2C37Z5U105M025C
SA301C473KAAH
2C37Z5U105M025C
2C37Z5U105M025C
SA301C473KAAH

AlEC16
A18CR1
AlECR2
AlECR3
AlBCR4

0180-1731
1901-0033
1901-0033
1901-0033
1901-0033

a
2
2
2
2

1
1
1
1
1

CAPACITOR-FXO
DIODE-GEN PRP
DIODE-GEN PRP
DIODE-GEN PRP
DIODE-GEN PRP

56289
9N171
9N171
9N171
9N171

1500475X9050B2-OYS
lN645
lN645
lN645
lN645

AlECR5
AlECR6
AlECR7
AlaCRE
AlECR9

1901-0033
1901-0033
1901-0033
1901-0662
1901-0662

2
2
2
3
3

1
1
1
1
1

DIODE-GEN PRP 18OV 200MA DO-35
DIODE-GEN PRP 18OV 200MA DO-35
DIODE-GEN PRP laov 200MA DO-35
DIODE-PWR RECT 1OOV 6A
DIODE-PWR RECT 1OOV 6A

9N171
9N171
9N171
04713
04713

lN645
lN645
lN645
MR751
MR751

A18CR12
AlECR15
AlECR25
A18CR26
A18CR27

1901-0662
1901-0743
1884-0018
1884-0018
iaa4-0018

3
1
5
5
5

1
1
1
I
1

DIODE-PWR RECT 1OOV 6A
DIODE-PWR RECT lN4004 400V 1A DO-41
THYRISTOR-SCR 2N4186 VRRM=LOO
THYRISTOR-SCR 2N4186 VRRM=POO
THYRISTOR-SCR 2N4186 VRRM=200

04713
71744
04713
04713
04713

MR751
lN4004
2N4186
2N4186
2N4186

A18OSl
AlEOS2
AlEOS3
AlBFl
A18F2

1990-0487
1990-0487
1990-0487
2110-0083
2110-0043

7
7
7
6
8

1
1
1
1
1

LEO-LAMP LUM-INT=2MCO
LEO-LAMP LUM-INT=2MCO
LEO-LAMP LUM-INT=ZMCO
FUSE 2.5A 250V NT0 FE
FUSE 1.5A 250V NT0 FE

28480
28480
28480
75915
75915

HLMP-1401
HLMP-1401
HLMP-1401
312 02.5
312 01.5

AlEF3
Ali3MPl
AlEMP3
AlEMP4
AlEMP5

2110-0010

9

1

75915

312 005

2110-0726
5000-9043
5040-6843

4
6
2

6
1
1

FUSE (INCH)
5A 250V NT0 FE UL
NOT ASSIGNED
FUSEHOLDER-CLP-TYP.250-FUSE
EXTRACTOR PIN
PC BOARD EXTRACTOR

13060
28480
28480

1115-0597T
5000-9043
5040-6843

AlEMP6
A18MP7
AlEQl
AlEQ2
A1893

1205-0638
1200-0081
1854-0404
1854-0072
1853-0001

7
4

HEAT SINK SGL TO-66-CS
INSULATOR-FLG-BSHG NYLON
TRANSISTOR NPN SI TO-18 PO=360MW
TRANSISTOR NPN 2N3054 SI TO-66 PO=25W
TRANSISTOR PNP SI TO-39 PO=GOOMW

13103
26365
04713
04713
27014

-6017B-SE-3
974 307

1

1
12
I
1
1

A18Q4

1853-0007

7

1

TRANSISTOR PNP 2N3251 SI TO-18 PO=360MW

04713

0
a

4.7UF+-10%
18OV 200MA
laov 200~~
18OV 200MA
18OV 200MA

REGULATOR

50VOC TA
DO-35
00-35
DO-35
DO-35

BVR=5V
BVR=SV
BVR=5V
UL
UL

*Indicates factory-selected value

2N3054

2N3251

85660-60289 Parts List
Page 1 of 3

HP Part Number 85660-60289
Al8 Negative Regulator
Reference
Designation

HP Part
Number

AlEQ5
AlEQ6
AlaRI
AlER2

1854-0271
1854-0404
0811-1552
0757-0421

AlER3
AlER4
AlER5
AlER6
AlER7

0757-0438
0757-0280
0698-6835
0698-6835
0698-6835

AlaRa
A18R9
AlaRlO
A18Rll
AlER12

s

D

1
1
1
1

TRANSISTOR NPN SI
TRANSISTOR NPN SI
RESISTOR .56 +-5%
RESISTOR 825 +-1%

3
3
0
0
0

1
1
1
1
1

0683-0275
0698-3444
0757-0346
0757-0280
0757-0428

9
1
2
3
1

A18R13
AlER14
AlER15
AlER16
AlER17

0698-3447
0698-3444
0757-0346
0698-3444
0811-1665

A18R18
AlER19
A18R20
AlER21
AlER22

0757-0280
0698-3449
0757-0280
0757-0442
0757-0442

A18R23
A18R24
AlER25
A18R26
AlER27

0811-1552
0698-8464
0698-6835
0698-6835
0683-0275

AlER28
AlER29
AlER30
A18R31
A18R32

0698-3444
0757-0346
0698-3150
0698-3150
0812-0066

A18R33
AlER34
AlER35
A18R36
AlER37

0812-0066
0812-0066
0757-0280
0757-0441
D698-6835

AlER38
AlER39
A18R40
A18R43
AlER44
AlER45
A18R46
A18R47
AlETPl

Mfr Part
Number

Mfr
Code

Description

JtY
-

TO-39 PO=lW FT=lSOMHZ
TO-18 PO=360MW
2W PWI TC=O+-800
.125W TF TC=O+-100

04713
04713
11502
19701

SPH
SFR25H

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

5.11K +-1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50

19701
19701
19701
19701
19701

SFR25H
SFR25H
5033R
5033R
5033R

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

2.7 5% .25W CF TC=O-400
316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
1K +-1% .125W TF TC=O+-100
1.62K +-1% .125W TF TC=O+-100

2M627
19701
91637
19701
19701

R-25J
SFR25H
CMF-55-1, T-l
SFR25H
SFR25H

4
1
2
1
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

422 1% .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
10 +-1X .125W TF TC=O+-100
316 1% .125W TF TC=O+-100
.82 +-5% 2W PWI TC=O+-800

19701
19701
91637
19701
11502

SFR25H
SFR25H
CMF-55-1, T-l
SFR25H
SPH

3
6
3
9
9

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

1K +-1% .125W TF TC=O+-100
28.7K 1% .125W TF TC=O+-100
IK +-1% .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
IOK +-1% .125W TF TC=O+-100

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

.56 +-5% 2W PWI TC=O+-800
12.6K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
3.16K +-0.5% .125W TF TC=O+-50
2.7 5% .25W CF TC=O-400

11502
19701
19701
19701
2M627

SPH
5033R
5033R
5033R
R-25J

1
2
6
6
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

316 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
2.37K 1% .125W TF TC=O+-100
.33 ~-5% 2W PWI TC=O+-800

19701
91637
19701
19701
11502

SFR25H
CMF-55-1, T-l
SFR25H
SFR25H
SPH

1
1
3
a
0

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

.33 +-5% 2W PWI TC=O+-800
.33 +-5% 2W PWI TC=O+-800
1K +-1% .125W TF TC=O+-100
8.25K +-1% .125W TF TC=O+-100
3.16K +-0.5% .125W TF TC=O+-50

11502
11502
19701
19701
19701

SPH
SPH
SFR25H
SFR25H
50338

3698-7050
3698-6853
3683-0275
3757-0401
3757-0401

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

4.48K +-0.5% .125W TF TC=O+-50
7.68K +-0.5% .125W TF TC=O+-50
2.7 5% .25W CF TC=O-400
100 +-1% .125W TF TC=O+-100
100 +-1% .125W TF TC=O+-100

19701
19701
2M627
19701
19701

5033R
5033R
R-25J
SFR25H
SFR25H

3698-3435
3757-0280
3757-0401
1251-0600

1
1
1
1

RESISTOR 38.3 1% .125w TF ~c=o+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 100 +-1X .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

19701
19701
19701
27264

SFR25H
SFR25H
SFR25H
16-06-0034

-

8X60-60289 Parts List
Page 2 of 3

*Indicates factory-selected value

SQ

HP Part Number 85660-60289

Reference
Designation

HP Part
Number

C

D

at]
-

Al8 Negative Regulator
Mfr
Code

Description

Mfr Part
Number

A18TP2

1251-0600

0

1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

SQ

27264

16-06-0034

AlETP3
AlETP4
A18TP5
A18Ul
AlEU2

1251-0600
1251-0600
L251-0600
1820-0223
1820-0223

0
0
0
0
0

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
IC OP AMP GP TO-99 PKG
IC OP AMP GP TO-99 PKG

27264
27264
27264
27014
27014

16-06-0034
16-06-0034
16-06-0034
LM301AH
LM301AH

AlEU3
AlEVRl
A18VR2
AlEVR3
AlEVR4

1820-0223
.902-0025
.902-3171
.902-3330
.902-0049

0
4
7
0
2

1
1
1
1
1

IC OP AMP GP TO-99 PKG
DIODE-ZNR 1OV 5% DO-35 PO=.4W TC=+.06%
DIODE-ZNR 11V 5% DO-35 PO=.4W TC=+.062%
DIODE-ZNR 44.2V 2% DO-35 PO=.4W
DIODE-ZNR 6.19V 5% DO-35 PO=.4W

27014
04713
04713
04713
04713

LM301AH

-

*Indicates factory-selected value

85660450289 Parts List
Page 3 of 3

u
rR30

“,i: (g
R23
R
I
I
,-*a
II

L *_I
‘d’

I

L--FL
-1

pi
I

-+---LJ

L----zEl ’

nyrj

~~~
RS9
R38
H

R37
CR7
0
O2
0
s:
R46
LL
c9
0
+ B
z
U,
-~~
n
:_:I

,’

-eY
IR17I
r--q
CR5
(J @Eg
R22
Ia.4
RI9
I

RICR42
RI3
FEZ+i_;yfTg,
Cl7
u2
04

CR26 P
R5
0
R8
I Vf+l I
R6
RJ
RI5
&r_t-3 (5A)
‘:l:;r,
I[CR61 ( CR27 )
R28
‘-a
g
L
\ - ‘LYg
r---rT
I

u

1
19

-

PI

18
36

Al8 Negative Regulator Component Locations, 85660-60137

DS3
-5.2V
/

Ul t
30
m
m
m
j
R43
c,,
r?
CR12
II
m
m

,

Al8 Negative Regulator Component Locations, 85660-60289

A19
A19 Digital-to-Analog Converter (DAC), Circuit Description
The A19 DAC provides the tuning voltage to the A20 YTO Main Coil Driver used to coarse
tune the YTO Start Frequency and set the proper amount of sweep. This occurs at the
beginning of each sweep and at the beginning of each harmonic band within a sweep.

YTO Pretune Register @ and Pretune DAC @
Frequency information is loaded into pretune registers U5 and U6 from the Instrument Bus.
This is coded information from the Instrument Bus. This information is clocked into the
registers by LDAS (Low = DAC Strobe). The Pretune DAC, in conjunction with U2, provides
an output of 0.0 to i-12.6 V dc in approximately 3 mV increments. The exact voltage is
dependent on the coded information input. This voltage is applied to Summing Amplifier U4
through R3.

Frequency Span Register and Switch Driver @I and Span Scaling @
Coded span information from the Al2 Front-Panel Interface is loaded into register U7 from
the Instrument Bus and clocked out to switch drivers U8 and U9 by LSAS (Low = Scan
Attenuator Strobe). These switch drivers turn on (close) switches Q2 through Q6 according to
the coded information input. The SCAN DAC IN signal (attenuated sweep ramp) from the
Al6 Scan Generator is then applied to the proper scaling resistors R26 through R30, R38, and
R58, to provide the sweep for the YTO. This output current is applied to Summing Amplifier
u4.

Summing Amplifier @
The fixed dc current from the Pretune DAC, corresponding to the desired YTO Start
Frequency, and the ramp current from the Scaling Resistors, corresponding to the desired
Frequency Span, are summed at the input of U4. U4 amplifies this combined signal and
applies it to both the YTO and YTX at a sensitivity of -3 V/GHz to coarse tune the
analyzer to the selected Start Frequency and Frequency Span.

Negative Voltage Reference @ and Positive Voltage Reference @
U3 and associated circuitry 0 provide a nominal -12.6 V reference for U3, the pretune DAC
in function block 0. UlO and associated circuitry $J provide a nominal +lO V reference for
summing amplifier U4 in function block 0.

A19 1

HP Part Number 85660-60212
A19 DAC
Reference
Designation

HP Part
Number

C
D %Y
-

Mfr
Code

Description

Mfr Part
Number

28480

85660-60212

04222
56289

SR401E105MAAH
199D1123
805-504 Y5V 1032
SR401E105MAAH
805-504 Y5V 1032

A19

85660-60212

4

1

A19Cl
A19C2
A19C4
A19C5
A19C6

0160-4005
0180-0630
0160-2055
0160-4005
0160-2055

3
4
9
3
9

1
1
1
1
1

BOARD ASSEMBLY. DIGITAL-TO-ANALOG
CONVERTER (DAC)
CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 4.7uF 50 V TA
CAPACITOR-FXD .OlUF +80-20% IOOVDC CER
CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER

A19C7
A19ClO
A19Cll
A19C12
A19C13

0160-2055
0160-2055
0180-0116
0160-4005
0180-0229

9
9
1
3
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAPACITOR-FXD .OlUF +80-20X 1OOVDC CER
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 33uF 10 V TA

56289
04222
56289

805-504 Y5V 1032
805-504 Y5V 1032
150D685X903582-DYS
SR401E105MAAH
150D336X901082-DYS

A19C14
A19C15
A19C16
A19C17
A19C18

0160-2055
0180-0183
0160-4005
0180-0228
0160-4745

9
2
3
6
8

1
1
1
1
1

CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER
CAP-FXD 1OuF 50 V AL-ELCTLT
CAPACITOR-FXD 1UF +-20x 1OOVDC CER
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAP-FXD 0.33uF 100 V POLYP-FL

56289
04222
56289
84411

805-504 Y5V 1032
30D106G050CB2-DSM
SR401E105MAAH
150D226X901582-DYS
HEW-446

A19C19
A19C20
A19C21
A19C22
A19C23

0160-4005
0180-0630
0180-0630
0160-4745
0160-2055

3
4
4
8
9

1
1
1
1
1

CAPACITOR-FXD 1UF +-20% 1OOVDC CER
CAP-FXD 4.7uF 50 V TA
CAP-FXD 4.7uF 50 V TA
CAP-FXD 0.33uF 100 V POLYP-FL
CAPACITOR-FXD .OlUF +80-20% 1OOVDC CER

04222
56289
56289
84411

SR401E105MAAH
199111123
199D1123
HEW-446
805-504 Y5V 1032

A19C24
A19CRl
A19CR2
A19CR3
A19El

0160-4005
1901-0179
1901-0539
1901-0050
0340-0060

3
7
3
3
4

1
1
1
1
1

CAPACITOR-FXD 1UF +-20% 1OOVDC CER
DIODE-SWITCHING 15V 50MA 750PS DO-7
DIODE-SCHOTTKY SM SIG
DIODE-SWITCHING 8OV 200MA 2NS DO-35
TERMINAL-STUD SPCL-FDTHRU PRESS-MTG

04222
27014

SR401E105MAAH
FD777

9N171
98291

lN4150
011-6809-00-0-209

A19MPl
A19MP4
A19MP5
A19MP6
A19Ql

5000-9043
5040-6843
0890-0644
1853-0281

6
2
5
9

1
1
1
1

NOT ASSIGNED
PIN
EXTRACTOR, PC
SLEEVING-FLEX .102-ID NEMA-3 .018-WALL
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW

28480
28480
79074
04713

5000-9043
5040-6843
VARFIL B-A-l
2N2907A

A1992
A19Q3
A1994
A1995
A1996

1853-0322
1853-0322
1853-0322
1853-0322
1853-0322

9
9
9
9
9

1
1
1
1
1

TRANSISTOR PNP 2N2946A
TRANSISTOR PNP 2N2946A
TRANSISTOR PNP 2N2946A
TRANSISTOR PNP 2N2946A
TRANSISTOR PNP 2N2946A

PD=400MW
PD=4OOMW
PD=400MW
PD=4OOMW
PD=400MW

04713
04713
04713
04713
04713

A19Q7
A19Q8
A19Rl
A19R2
A19R3

1853-0322
1853-0322
0698-8590
0757-0280
0699-0306

9
9
8
3
0

1
1
1
1
1

TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
TRANSISTOR PNP 2N2946A SI TO-46 PD=400MW
RESISTOR 853 +-1% .125W TF TC=O+-100
RESISTOR 1K +-1% .125W TF TC=O+-100
RESISTOR 6K +-0.025% .lW TF TC=O+-5

04713
04713
19701
19701
19701

SFR25H
SFR25H
50232

A19R4
A19R5
A19R6
A19R7
A19R8

0698-0024
0699-0306
0699-0642
0699-0306
0757-0346

7
0
7
0
2

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
91637

5053R
50232
5023ZAlOKOOB
50232
CMF-55-1, T-l

A19R9

2100-4020

8

1

RESISTOR-TRMR 2K 10% TF SIDE-ADJ 26-TRN

18612

1280-2K-10%

SI
SI
SI
SI
SI

TO-46
TO-46
TO-46
TO-46
TO-46

2.61K 1% .5W TF TC=O+-100
6K +-0.025% .lW TF TC=O+-5
10K +-0.1% .lW TF TC=O+-5
6K +-0.025% .lW TF TC=O+-5
10 +-1X .125W TF TC=O+-100

04222

-

*Indicates factoyselected value

85660-60212 Parts List
Page 1 of 3

HP Part Number 85660-60212
A19 DAC
Reference
Designation

HP Part
Number

C
0

Description

Jtty
-

Mfr Part
Number

Mfr
Code

A19RlO
A19Rll
A19R12
A19R13

0757-0346
0698-6348
0757-0439
0757-0346

i
c
4
2

1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .125W TF TC=O+-100
3K +-0.1% .125W TF TC=O+-25
6.81K +-1% .125W TF TC=O+-100
10 +-I% .125W TF TC=O+-100

91637
19701
19701
91637

CMF-55-1, T-l
5033R
SFR25H
CMF-55-1, T-l

A19R14
A19R15
A19R16
A19R17
A19R18

0757-0346
0699-0156
D757-0346
3757-0400
3757-0422

2
6
2
9
5

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

10 +-1% .125W TF TC=O+-100
6.19K +-0.1% .lW TF TC=O+-5
10 +-1% .125W TF TC=O+-100
90.9 +-1X .125W TF TC=O+-100
909 +-1% .125W TF TC=O+-100

91637
19701
91637
19701
19701

CMF-55-1, T-l
50232
CMF-55-1, T-l
SFR25H
SFR25H

A19R19
A19R20
A19R21
A19R22
A19R23

2100-1762
3757-0159
3757-0442
0757-0442
0757-0442

9
5
P
(
(

1
1
1
1
1

RESISTOR-TRMR 20K 5% WW
RESISTOR 1K +-1% .5W TF
RESISTOR 10K +-1% .125W
RESISTOR 10K +-1% .125W
RESISTOR IOK +-1% .125W

19701
19701
19701
19701

CT-106-4-20K
5053R
SFR25H
SFR25H
SFR25H

A19R24
A19R25
A19R26
A19R27
A19R28

0757-0442
0757-0442
0699-0302
0699-0304
0699-0309

(
(
t
t
:

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
SFR25H
50232
50232
50232

A19R29
A19R30
A19R31
A19R32
A19R33

0699-0643
0683-4755
0699-0643
2100-3163
0757-0443

E
E
E
E
c

1
1
1
1
1

RESISTOR 400K +-0.02% .125W TF TC=O+-5
RESISTOR 4.7M 5% .25W CC TC=-900/+1100
RESISTOR 400K +-0.02% .125W TF TC=O+-5
RESISTOR-TRMR 1M 20% TKF SIDE-ADJ 17-TRN
RESISTOR 11K +-1% .125W TF TC=O+-100

A19R34
A19R35
A19R36
A19R37
A19R38

0757-0416
0757-0442
0757-0440
0757-0443
0757-0465

7
9
7
C
6

1
1
1
1
1

RESISTOR 511 +-I% .125W
RESISTOR 10K +-1% .125W
RESISTOR 7.5K +-1X .125W
RESISTOR 11K +-1% .125W
RESISTOR 1OOK +-1% .125W

A19R39
A19R40
A19R41
A19R42
A19R43

3757-0438
3757-0442
?lOO-3154
3757-0442
!lOO-3061

3
9
7
9
5

1
1
1
1
1

A19R44
A19R45
A19R46
A19R47
A19R48

0698-3260
0757-0276
0698-8572
0757-0438
0757-0346

E
;
f
:
i

A19R49
A19R50
A19R51
A19R52
A19R53

0699-0642
2100-4020
0698-6348
0699-0156
0757-0438

A19R54
A19R55
A19R56
A19R57

D757-0442
3757-0438
2100-3154
3757-0442

SIDE-ADJ I-TRN
TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

10K +-1X .125W TF TC=O+-100
10K +-1% .125W TF TC=O+-100
800 +-0.025% .lW TF TC=O+-5
8K +-0.025% .lW TF TC=O+-5
80K +-0.025% .lW TF TC=O+-5

73138
19701

PR1/8
CB4755
PRY8
89PRlM
SFR25H

19701
19701
19701
19701
19701

SFR25H
SFR25H
SFR25H
SFR25H
SFR25H

RESISTOR 5.11K +-1X .125W TF TC=O+-100
RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 1K 10% TKF SIDE-ADJ 17-TRN
RESISTOR 1DK +-I% .125W TF TC=O+-100
RESISTOR-TRMR 500K 10% TKF SIDE-ADJ 17-T

19701
19701
73138
19701
73138

SFR25H
SFR25H
89PRlK
SFR25H
89PR500K

1
1
1
1
1

RESISTOR 464K 1% .125W TF TC=O+-100
RESISTOR 61.9 +-1% .125W TF TC=O+-100
RESISTOR 508.7 +-0.1% .125W TF TC=O+-25
RESISTOR 5.11K +-I% .125W TF TC=O+-100
RESISTOR 10 +-I% .125W TF TC=O+-100

19701
19701
19701
19701
91637

SFR25H
SFR25H
5033R
SFR25H
CMF-55-1, T-l

i
E
c
E
3

1
1
1
1
1

RESISTOR 10K +-0.1% .lW TF TC=O+-5
RESISTOR-TRMR 2K 10% TF SIDE-ADJ 26-TRN
RESISTOR 3K +-0.1% .125W TF TC=O+-25
RESISTOR 6.19K +-0.1X .lW TF TC=O+-5
RESISTOR 5.11K +-1% .125W TF TC=O+-100

19701
18612
19701
19701
19701

5023ZAlOKOOB
1280-2K-10%
5033R
50232
SFR25H

9
3
7
9

1
1
1
1

RESISTOR 10K +-1% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 1K 10% TKF SIDE-ADJ 17-TRN
RESISTOR 10K +-1% .125W TF TC=O+-100

19701
19701
73138
19701

SFR25H
SFR25H
89PRlK
SFR25H

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100

-

85660-60212 Parts List
Page 2 of 3

*Indicates factory-selected value

01121

HP Part Number 85660-60212
A19 DAC

Reference
Designation

HP Part C
Number D Qty

Mfr Part
Number

Mfr
Code

Description

A19R58

0757-0465

6

1

RESISTOR 1OOK +-1% .125W TF TC=O+-100

19701

SFR25H

A19R59
A19R60
A19R61
A19R62
A19TPl

0757-0346
0757-0346
0757-0346
0757-0346
1251-0600

22
2
2
0

1
1
1
1
1

RESISTOR 10 +-1X .125W
RESISTOR 10 +-1X .125W
RESISTOR 10 +-1X .125W
RESISTOR 10 +-1% .125W
CONNECTOR-SGL CONT PIN

91637
91637
91637
91637
27264

CMF-55-1. T-l
CMF-55-1, T-l
CMF-55-1, T-l
CMF-55-1, T-l
16-06-0034

A19TP2
A19TP3
A19TP4
A19TP5
A19Ul
A19Ul

1251-0600
1251-0600
1251-0600
1251-0600
1826-1190
1826-1169

0
0
0
0
4
7

1
1
1
1
1
0

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
D/A 12-l/2-BIT 18-CERDIP CMOS
ALTERNATE FOR 1826-1190

SQ
SQ
SQ
SQ

27264
27264
27264
27264
28480
24355

16-06-0034
16-06-0034
16-06-0034
16-06-0034
1826-1190
AD7541ABQ

A19U2
A19U3
A19U3
A19U4
A19U4
A19U5
A19U6
A19U7
A19U8

1826-0471
5180-2315
5180-2314
5180-2315
5180-2314
1820-1196
1820-1196
1820-1196
1826-0161

2
1
0
1
0
8
8
8
7

1
1
0
1
0
1
1
1
1

IC OP AMP
IC OP AMP
ALTERNATE
IC OP AMP
ALTERNATE
IC FF TTL
IC FF TTL
IC FF TTL
IC OP AMP

LOW-DRIFT TO-99 PKG
LOW-DRIFT TO-99 PKG
FOR 5180-2315
LOW-DRIFT TO-99 PKG
FOR 5180-2315
LS D-TYPE POS-EDGE-TRIG COM CL
LS D-TYPE POS-EDGE-TRIG COM CL
LS D-TYPE POS-EDGE-TRIG COM CL
GP QUAD 14-DIP-P PKG

06665
28480
28480
28480
28480
01295
01295
01295
27014

OP-07CJ SELECTED
5180-2315
5180-2314
5180-2315
5180-2314
SN74LS174N
SN74LS174N
SN74LS174N
LM324N

A19U9
A19UlO
A19UlO
AlSVRl
A19VR2
A19VR3

1826-0161
5180-2315
5180-2314
1902-0625
1902-0625
1902-3203

7
1
0
0
0
6

1
1
0
1
1
1

IC OP AMP
IC OP AMP
ALTERNATE
DIODE-ZNR
DIODE-ZNR
DIODE-ZNR

GP QUAD 14-DIP-P PKG
LOW-DRIFT TO-99 PKG
FOR 5180-2315
lN829 6.2V 5% DO-35 PD=.25W TC
lN829 6.2V 5% DO-35 PD=.25W TC
14.7V 5% DO-35 PD=.4W

27014
28480
28480
04713
04713
04713

LM324N
5180-2315
5180-2314
lN829
lN829

TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
TF TC=O+-100
1.14~MM-BSC-SZ

*Indicates factory-selected value

SQ

8X60-60212 Parts List
Page 3 of3

R43
R32
2 5 G H Z 2 . 5 GHL
SPAN
SPAN

pm-0+
o-,..” -0:, yI u+- =: w
m
Elan0N r0+-. ;oc‘I)0- IR36
a:
R60RSZR 59 0 :0 orcr
0
H
1
19

PI

18
36

A19 Digital-to-Analog Converter Component Locations, 85660-60212

A20
A20 Main Coil Driver, Circuit Description
The A20 Main Coil Driver produces a tuning current proportional to the tuning voltage input
from the A19 DAC and applies it to the AllA YTO. Th’is provides coarse tuning of the
YTO frequency and sweep. Fine tuning is performed by summing a current proportional to
the low-frequency error voltage from the AllA YTO Phase Detector (via the A21 FM Coil
Driver) with the tuning current from the A19 DAC. Additional fine tuning is done by the A21
FM Coil Driver using the current proportional to the high-frequency error voltage component.

Input Amplifier @
Transistors QS through Ql2 form a discrete noninverting operational amplifier whose output
is proportional to the tuning voltage input (YTO TUNE 1). This output is applied to Coil
Driver Ql, Q4, and Q5 which supply the YTO Main Coil current. For frequency spans greater
than 5 MHz, LYSP (1ow = YTO span) turns on (closes) switch Q2 allowing a current flow
through R19. This is done to improve sweep linearity for wide spans (>5 MHz).

Phase Lock Amplifier @
Phase Lock Amplifier UlB provides a current proportional to the low-frequency error voltage
input (YTO TUNE 2). Th’is error voltage input is from the AllA YTO Phase Detector and
is indicative of the YTO frequency error. The current output of the Phase Lock Amplifier is
summed with the current output controlled by the Input Amplifier in the Coil Driver.

Coil Driver @
Transistors Ql, Q4, and Q5 provide drive current to the main coil of the AllA YTO to set
the frequency and amount of sweep of the YTO. YTO main coil sensitivity is approximately
25 mA/GHz. The Coil Driver output is between approximately 50 and 150 mA.

Shaping Network @J
Compensation network U2 provides linearity shaping of the current output of the Coil Driver.
The components of the network are factory selected to match the YTO. Resistors R24, Rl6,
and R25 sense the current output of the Coil Driver. R25 is used to fine tune the YTO to
6.15 GHz.

Offset Reference 6~
The Offset Reference composed of UlA and associated circuitry provides a fixed voltage to
Phase Lock Amplifier UlB. This voltage provides the current necessary to fine tune the YTO
to 2.3 GHz.

A20 1

HP Part Number 85660-60206
A20 Main Coil Driver
Reference
Designation

I

HP Part
Number

A20

85660-60206

AZOCl
AZOC2
A20C3
A20C4
A20C5

C
D QtY

Mfr
Code

Description

Mfr Part
Number

6

1

BOARD ASSEMBLY, MAIN COIL DRIVER

28480

85660-60206

0160-4832
0180-1731
0180-0116
0160-0574
0180-0116

~ 4
8
1
3
1

1
1
1
1
1

CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
CAPACITOR-FXD 4.7UF+-10% 5OVDC TA
CAPACITOR-FXD 6.8UF+-10% 35VDC TA
CAPACITOR-FXD .022UF +-20% IOOVDC CER
CAPACITOR-FXD 6.8UF+-10% 35VDC TA

04222
56289
56289
04222
56289

SAlOlC103KAAH
150D475X9050B2-DYS
1500685X9035B2-DYS
SR201C223MAAH
15OD685X9035B2-DYS

A20C6
A20C7
A20C8
A20C9
A20ClO

0160-4832
0180-2139
0160-4832
0180-0291
0180-0229

4
2
4
3
7

1
1
1
1
1

CAPACITOR-FXD .OlUF +-IO% 1OOVDC CER
CAP-FXD 1OuF 60 V WT-SLG-TA-ELCTLT
CAPACITOR-FXD .OlUF +-lo% 1OOVDC CER
CAPACITOR-FXD lUF+-10% 35VDC TA
CAP-FXD 33uF 10 V TA

04222
56289
04222
56289
56289

SAlOlC103KAAH
109D106X0060C2-DYP
SAlOlC103KAAH
150D105X9035A2-DYS
1500336X9010B2-DYS

A20Cll
A20C12
A20C13
A20C14
A20C15

0160-4832
0160-4832
0180-0197
0180-0228
0180-1746

4
4

.8

6
5

1
1
1
1
1

CAPACITOR-FXD .OlUF +-10x 1OOVDC CER
CAPACITOR-FXD .OlUF +-lo% 1OOVOC CER
CAPACITOR-FXD 2.2UF+-10% ZOVDC TA
CAPACITOR-FXD 22UF+-10% 15VDC TA
CAPACITOR-FXD 15UF+-10% ZOVDC TA

04222
04222
56289
56289
56289

SAlOlC103KAAH
SAlOlC103KAAH
150D225X9020A2-DYS
150D226X9015B2-DYS
150D156X9020B2-DYS

A20C16
A20C17
A20C18
A20C19
A20C20

0160-4832
0160-4442
0160-4832
0160-3877
0160-3878

4
2
4
5
6

1
1
1
1
1

CAPACITOR-FXD .OlUF +-lo%
CAPACITOR-FXD .15UF +-20%
CAPACITOR-FXD .OlUF +-10X
CAPACITOR-FXD IOOPF +-20%
CAP-FXD 1OOOpF 100 V

04222
04222
04222
04222
04222

SAlOlC103KAAH
SR301C154MAAH
SAlOlC103KAAH
SR202ClOlMAAH
SR201C102MAAH

AEOCRl
A20CR2
A20CR3
A20CR5
A20CR6

1901-0033
1901-0040
1901-0040
1901-0033
1901-0033

2
1
1
2
2

1
1
1
1
1

DIODE-GEN PRP 180V
DIODE-SWITCHING 30V
DIODE-SWITCHING 30V
DIODE-GEN PRP 1BOV
DIODE-GEN PRP 180V

9N171
71468
71468
9N171
9N171

lN645

IN645
lN645

A20CR7
AEOMPl
A20MP3
A20MP4
A20MP5

1901-0033

2

1

9N171

lN645

1205-0085
2190-0003
2200-0107

8
8
6

1
2
2

DIODE-GEN PRP 180V 200MA DO-35
NOT ASSIGNED
HEAT SINK TO-66-CS
WASHER-LK HLCL NO. 4 .115-IN-ID
SCREW-MACH 4-40 .375-IN-LG PAN-HD-POZI

13103
80120
77250

61668 BASE ONLY

A20MP6
A20MP7
A20MP8
A20MP9
A20MPlO

6040-0454
2260-0001
8151-0013
5000-9043
5040-6843

0
5
4
6
2

1
2
1
1
1

HEAT SINK COMPOUND SYNTH/REFRC
NUT-HEX-DBL-CHAM 4-40-THD .094-IN-THK
WIRE 22AWG 1X22
EXTRACTOR PIN
PC BOARD EXTRACTOR

92895
80120
92194
28480
28480

52022IJ

AEOMPll
A20MP12
A20MP13
A20MP14
A20MP15

1200-0539
3050-0010
2360-0119
2420-0003
2190-0018

7
2
8
7
5

1
1
2
2
2

SOCKET-IC 18-CONT DIP DIP-SLDR
WASHER-FL MTLC NO. 6 .147-IN-ID
SCREW-MACH 6-32 .438-IN-LG PAN-HD-POZI
NUT-HEX-DBL-CHAM 6-32-THD .094-IN-THK
WASHER-LK HLCL NO. 6 .141-IN-ID

09922
76210
93907
80120
73734

A2091
A2002
A2004
A2095
A2006

1854-0237
1855-0413
1854-0232
1853-0038
1854-0404

1
1
1
1
1

TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR

PD=EOW FT=lOMHZ
D-MODE TO-18 SI
PD=lW FT=15MHZ
PD=lW FT=lOOMHZ
PD=360MW

04713
17856
04713
04713
04713

A2097

1853-0007

1

TRANSISTOR PNP 2N3251 SI TO-18 PD=360MW

04713

200MA
SOMA
50MA
200MA
200MA

NPN SI TO-66
J-FET P-CHAN
NPN SI TO-39
PNP SI TO-39
NPN SI TO-18

1OOVDC
1OOVDC
1OOVDC
EOOVDC

CER
CER
CER
CER

DO-35
2NS DO-35
2NS DO-35
DO-35
DO-35

*Indicates factory-selected value

298
5000-9043
5040-6843
DILB18P-308T
65

2N3251

85660450206 Parts List
Page 1 of 3

HP Part Number 85660-60206
A20 Main Coil Driver

Reference
Designation

HP Par-l
Number

Ml
-

A2098
A.2009
A2099

1854-0022
1854-1030
1854-0221

A20910
A20Qll

1853-0007
1853-0451

7
5

1
1

TRANSISTOR NPN
TRANSISTOR-DUAL
TRANSISTOR-DUAL
(ALTERNATE FOR
TRANSISTOR PNP
TRANSISTOR PNP

A20Q12
A20Q13
A20R5
A20R6
A20R7

1853-0012
1853-0451
0757-0440
0757-0440
D698-0083

4
5
7
7
a

1
1
1
1
1

A20R8
A20R9
A20RlO
A20Rll
A20R12

0698-3440
0757-0346
D757-0465
3698-3157
3757-0442

7
2
6
3
9

A20R13
A20R14
A20R15
A20R16
A20R17

3698-3440
3757-0401
3757-0421
3811-3440
3698-3440

A20R18
A20R19
A20R22
A20R23
A20R24

1
1
0

Mfr Part
Number

Mfr
Code

Description
SI TO-39 PO=700MW
NPN TO-78 PD=750MW
NPN
1854-1030)
2N3251 SI TO-18 PD=360MW
2N3799 SI TO-18 PD=360MW

28480
04713
28480

1854-0022

04713
04713

2N3251

TRANSISTOR PNP 2N2904A SI TO-39 PD=GOOMW
TRANSISTOR PNP 2N3799 SI TO-18 PD=360MW
RESISTOR 7.5K +-1% .125W TF TC=O+-100
RESISTOR 7.5K +-1% .125W TF TC=O+-100
RESISTOR 1.96K 1% .125W TF TC=O+-100

04713
04713
19701
19701
19701

2N2904A

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196 1% .125W TF TC=O+-100
10 +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
19.6K 1% .125W TF TC=O+-100
10K +-I% .125W TF TC=O+-100

19701
91637
19701
19701
19701

SFR25H
CMF-55-1, T-l
SFR25H
SFR25H
SFR25H

7
0
4
9
7

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

196
100
825
125
196

19701
19701
19701
01686
19701

SFR25H
SFR25H
SFR25H
ALN-25
SFR25H

3757-0458
3757-0465
3757-0290
3757-0346
3811-2936

7
6
5
2
6

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

51.1K +-1% .125W TF TC=O+-100
1OOK +-1% .125W TF TC=O+-100
6.19K +-1% .125W TF TC=O+-100
10 +-1X .125W TF TC=O+-100
15 +-0.1X .5W PN TC=O+-5

19701
19701
19701
91637
01686

SFR25H
SFR25H
SFR25H
CMF-55-1, T-l
R348

A20R25
A20R26
A20R27
A20R28
A20R29

!lOO-4020
1757-0438
3757-0438
1757-0467
1757-0346

8
3
3
8
2

1
1
1
1
1

RESISTOR-TRMR 2K 10% TF SIDE-ADJ 26-TRN
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 5.11K +-1% .125W TF TC=O+-100
RESISTOR 121K +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100

18612
19701
19701
19701
91637

1280-2K-10%
SFR25H
SFR25H
SFR25H
CMF-55-1, T-l

A20R30
A20R31
A20R32
A20R33
A20R34

1698-8025
1757-0402
1757-0458
1757-0428
!lOO-4020

4
1
7
1
8

1
1
1
1
1

RESISTOR 1.91K +-0.25% .125W TF TC=O+-50
RESISTOR 110 +-1% .125W TF TC=O+-100
RESISTOR 51.1K +-1X .125W TF TC=O+-100
RESISTOR 1.62K +-1% .125W TF TC=O+-100
RESISTOR-TRMR 2K 10% TF SIDE-ADJ 26-TRN

19701
19701
19701
19701
18612

5033R
SFR25H
SFR25H
SFR25H
1280-2K-10%

A20R35
A20R36
A20R37
A20R38
A20R39

1698-3153
1698-3447
1757-0458
1698-5673
1698-3155

9
4
7
2
1

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
91637
19701

SFR25H
SFR25H
SFR25H
CMF-55-1, T-9
SFR25H

A20R40
A20R41
A20R42
A20TPl
A20TP2

1698-8420
1757-0401
1757-0346
1251-0600
1251-0600

3
0
2
0
0

1
1
1
1
1

RESISTOR 4.221: +-1% .125W TF TC=O+-25
RESISTOR 100 +-1% .125W TF TC=O+-100
RESISTOR 10 +-1% .125W TF TC=O+-100
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ SQ

19701
19701
91637
27264
27264

50331
SFR25H
CMF-55-l. T-l
16-06-0034
16-06-0034

A20TP3
A20TP4

1251-0600
1251-0600

0
0

1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

27264
27264

16-06-0034
16-06-0034

1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-1% .125W TF TC=O+-100
+-1% 25W PWN TC=O+-2
1% .125W TF TC=O+-100

3.83K 1% .125W TF TC=O+-100
422 1% .125W TF TC=O+-100
51.1K +-1% .125W TF TC=O+-100
3.9K +-1% .125W TF TC=O+-25
4.64K 1% .125W TF TC=O+-100

-

85660-60206 Parts List
Page 2 of 3

*Indicates factory-selected value

SQ
SQ

1854-0221

SFR25H
SFR25H
SFR25H

HP Part Number 85660-60206
A20 Main Coil Driver

Reference
Designation

HP Part
Number

31
-

Mfr
Code

Description

Mfr Part
Number

A20TP5
A20TP6
A20Ul

L251-0600
1251-0600
5081-8117

1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
SCREEN 1826-0092 IC OPAMP

SC
SC

27264
27264
28480

16-06-0034
16-06-0034
5081-8117

A2OVRl
A20VR2

1902-0680
1902-3404

1
1

DIODE-ZNR lN827 6.2V 5% DO-7 PD=.4W TC=+
DIODE-ZNR 82.5V 5% DO-7 PD=.4W TC=+.082%

04713
04713

lN827

*Indicates factory-selected value

85660-60206 Parts List
Page 3 of 3

0 D E T

COIL

R25
6 . 1 5 GHZ
I

SR

0

LK

GND

R34
2 . 3 G H Z

MPl
\

L---J
ON.
Ol(LLLclFrncl‘cRnQfe”- @,
w
z+ 0sn :
I + mi d’
IIElI
g’: T: em
;\I $ +r
zf$k
I~~_1 + ft2 @4qua;
?It
o7
L
T
uii E : pg~g@&
Q!
,drilDrrccoo~or,
1
16

Pl

A20 Main Coil Driver Component Locations, 85660-60206

A21
A21 FM Coil Driver, Circuit Description
The A21 FM Coil Driver performs two functions.
1. Separates the low-frequency component from the error voltage input (DET IN) and directs
it to the A20 Main Coil Driver.
2. Provides drive current to the FM Coil of the YTO proportional to the high-frequency
component of the error voltage input (DET IN).

Phase Detector Buffer @
This buffer drives both the low-frequency (
Is
s
EN

7
B
s
Y2
ccn
is
z.
z
zE
“Z0”
ff
s3

a
c.
c)
0
-.
fE
i;
3

i
I
I
’

A 2 2 1OMHz F R E Q U E N C Y S T A N D A R D A S S E M B L Y
5 0 6 2 - 1 9 1 6 ( S E R I A L P R E F I X : 2728~)
I
I A22Al 1 OMHi -F~U:iCYfiiD~ -RiG?O:i
5 0 6 2 - 1 9 0 9 ( S E R I A L NUMBERS:2728A04255I 2747A05706)
; 5 0 6 2 - 4 8 3 7 ( S E R I A L NUMBERS:2747A05707
, AND ABOVE)
-^.
Ln I

i

A22Wl

I

I

I

I

Ul

J3

+,2v

+2ov SW, TCHED +
F R O M AZ3 33-1

1
‘;-C!-

3

1

I

1

I
I

7 NOTES:
REFERENCE DESIGNATORS WITHIN
THIS ASSEMBLY ARE ABBREVIATED.
F O R C O M P L E T E R E F E R E N C E DESIGNATIDN.PREFIX A B B R E V I A T I O N W I T H
ASSEMBLY DESIGNATION.

I
I

2. UNLESS OTHERWISE INDICATED:
R E S I S T A N C E I S I N O H M S 60)
C A P A C I T A N C E iS I N MICR F A R A D S
I N D U C T A N C E I S IN MICROHENRiES

I
, 3. UNLESS OTHERWISE INDICATED:
SIGNALS ENTER AT LEFT SIDE AND EXIT AT
R I G H T SIDE O F F U N C T I O N B L O C K S .

I

I
I

4 . A22Al P A R T N U M B E R C H A N G E D FROM 50621909 T O
50624837 WHEN ADDITIONAL
F I L T E R I N G W A S A D D E D T O R E D U C E SPURS.
O N 50624837, S E R I E S I N D U C T O R , L,.
A N D B Y P A S S C A P A C I T O R S . CJ A N D C4
W E R E A D D E D T O T H E +22” S U P P L Y Llk

I

II’
I
’
GND
F R O M AZ3 J3-2 +-

I

I

“+-r---i
7-1I
’
I
I
’
.

il I

GND
F R O M A 2 3 J J - 4 +HOVC
F R O M A 2 3 J3-3 +-

j! +lTr!Tl
IOMHZ
d

i

I
i

I
I

!

GND
F R O M A23 J J - 5 +

A22
A22 10 MHz FREQUENCY STANDARD

REGULATOR. SCHEMATIC DIAGRAM

HP Part Number 85660-60041
A23 Motherboard
Reference
Designation

H P Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

A23

85660-60041

7

1

BOARD ASSEMBLY, MOTHERBOARD
(SERIAL PREFIX: 2410A-2950A)

28480

85660-60041

A23Cl

0180-0452

8

1

28480

0180-0452

A23C2

0180-0454

0

1

28480

0180-0454

A23C3

0180-0453

9

1

28480

0180-0453

A23C4

0180-2798

9

1

28480

0180-2798

A23C5

0160-3879

7

1

CAPACITOR-FXD .031F +75-10x 25VDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD 4200UF +75-10% 75VDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD 8700UF +75-10% 40VDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD .03F +lOO-10% ZOVDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD .OlUF +-20X 1OOVDC CER

04222

SR201C103MAAH

A23C6
A23C7

0160-0127
0170-0073

2
8

1
1

A23CRl
A23CR2
A23DSl

1901-0743
1901-0050
1990-0517

1
3
4

A2352
A2353
A23Kl
A23Ll
A23L2

04222
28480

SR835E105MAAH

1
1
1

CAP-FXD 1uF 50 V
CAPACITOR-FXD 1UF 600V
(400HZ OPTION ONLY)
DIODE-PWR RECT lN4004 400V 1A DO-41
DIODE-SWITCHING 80V 200MA 2NS DO-35
LED-LAMP LUM-INT=3MCD IF=20MA-MAX BVR=SV

71744
9N171
28480

lN4004
lN4150
5082-4655

1251-5799
8
1252-2689
1
0490-0618
5
85660-80007 7
85660-80007 7

1
1
1
1
1

CONN-POST TYPE .lOO-PIN-SPCG 20-CONT
CONN-HEADER, VERTICAL, 6-PIN
RELAY 2C 24VDC-COIL 5A 115VAC
INDUCTOR P/S FILTER
INDUCTOR P/S FILTER

76381
28480
77342
28480
28480

3428-2303
1252-2689
R40-E0161-1
85660-80007
85660-80007

A23L3
A23L4
A23L5
A23L6
A23L7

85660-80007
85660-80007
85660-80007
85660-80007
85660-80007

7
7
7
7
7

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

FILTER
FILTER
FILTER
FILTER
FILTER

28480
28480
28480
28480
28480

85660-80007
85660-80007
85660-80007
85660-80007
85660-80007

A23L8
A23MPl
A23MP2
A23MP3
A23MP4

85660-80007

7

1

INDUCTOR P/S FILTER
NOT ASSIGNED
4
SPACER-RVT-ON .5-IN-LG .152-IN-ID
11 THREADED INSERT-STDF 4-40 .156-IN-LG
2
SCREW SM440 .312
(MUST BE ORDERED SEPARATELY)

28480

85660-80007

00866
46384
28480

KFE-440-5-ET
2200-0105

A23MP5
A23MP6

0590-0519
7
85660-00026 2

46384
28480

KF2-440-ET
85660-00026

A23MP7

1520-0205

A23MP8
A23MP9

0380-0076
0590-1491
2200-0105

6
6
4

P/S
P/S
P/S
P/S
P/S

28480

1520-0205

85660-20093 5
0890-0324
8

14 THREADED INSERT-NUT 4-40 .062-IN-LG STL
1
SHOCK-MOUNT, BOTTOM
(MUST BE ORDERED SEPARATELY)
SHOCK-MOUNT. .31HG
2
(MUST BE ORDERED SEPARATELY)
2
STANDOFF-YTO CASTING SUPPORT
TUBING-FLEX .032-ID TFE .012-WALL
1

28480
09795

85660-20093
II-TW,FR-1

A23MPlO
A23MPll

0890-0324
0460-0778

1
1

09795
28480

II-TW,FR-1
0460-0778

A23MP12

85660-00027

3

1

28480

85660-00027

A23MP13

85660-20061

7

1

28480

85660-20061

A23MP14

0340-0923

28480

0340-0923

2

8
5

8

TUBING-FLEX .032-ID TFE .012-WALL
TAPE PC, 6.85IN
(MUST BE ORDERED SEPARATELY)
HEAT SINK INSULATOR
(MUST BE ORDERED SEPARATELY)
TRANSISTOR HEAT SINK
(MUST BE ORDERED SEPARATELY)

10 INSULATOR, SPACER, .188L .115ID
(MUST BE ORDERED SEPARATELY)

*Indicates factory-selected value

8566040041 Parts List
Page 1 of 3

HP Part Number 85660-60041
A23 Motherboard

Reference
Designation

HP Part
Number

C
D

31
-

Mfr
Code

Description

A23MP15

2200-0111

2

1c

SCREW SM440 .500 PNPD
(MUST BE ORDERED SEPARATELY)
INSULATOR, TRANSISTOR TO-3ADH
(MUST BE ORDERED SEPARATELY)
SCREW SM1032 .312 PNPD
(MUST BE ORDERED SEPARATELY)

A23MP16

0340-1114

1

5

A23MP17

2680-0129

8

8

A23Pl
A23P2
A23P3
A23P4
A23P7

1251-0600
1251-0600
1251-0600
1251-0600
0360-1788

0
0
0
0
7

1
1
1
1
1

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CDNT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN .045-IN-BSC-SZ

A23P8
A23P9

0360-1788
0360-1788

7
7

1
1

A2391

1854-0618

8

1

A23Q2

1854-0294

0

1

A23Q3

1854-0618

8

1

A2394

1854-0679

1

1

A23Rl
A23R2

0757-0421
0687-3321

4
0

A23R3
A23R4
A23R5
A23R6
A23R7

0683-7515
0686-7525
0683-2225
0698-0084
0698-7229

A23R8
A23R9
A23RlO
A23Rll
A23R12

Mfr Part
Number

28480

2200-0111

28480

0340-1114

28480

2680-0129

SQ
SQ
SQ
SQ
SQ

27264
27264
27264
27264
04574

16-06-0034
16-06-0034
16-06-0034
16-06-0034

CONNECTOR-SGL CDNT PIN .045-IN-BSC-SZ SQ
CONNECTOR, SINGLE MALE SQ.045
(400HZ OPTION ONLY)
TRANSISTOR NPN SI DARL TO-3 PD=15OW
(MUST BE ORDERED SEPARATELY)

04574
28480
04713

MJ3000

28480

1854-0294

04713

MJ3000

28480

1854-0679

1
1

TRANSISTOR NPN SI TO-3 PD=llSW FT=500KHZ
(MUST BE ORDERED SEPARATELY)
TRANSISTOR NPN SI DARL TO-3 PD=150W
(MUST BE ORDERED SEPARATELY)
TRANSISTOR NPN 2N5885 SI TO-8 PO=EOOW
(MUST BE ORDERED SEPARATELY)
RESISTOR 825 +-1% .125W TF TC=O+-100
RESISTOR 3.3K 10% .5W CC TC=0+647

19701
01121

SFR25H
EB3321

4
2
3
9
8

1
1
1
1
1

RESISTOR 750 5% .25W CF TC=O-400
RESISTOR 7.5K 5% .5W CC TC=0+647
RESISTOR 2.2K 5% .25W CF TC=O-400
RESISTOR 2.15K 1% .125W TF TC=O+-100
RESISTOR 511 +-1X .05W TF TC=O+-100

2M627
01121
2M627
19701
19701

R-25J
EB7525
R-25J
SFR25H
50635

0698-7229
0698-7229
0698-7229
3698-7229
3698-7229

8
8
8
8
8

1
1
1
1
1

?ESISTOR
7ESISTDR
iESISTDR
1ESISTOR
7ESISTDR

19701
19701
19701
19701
19701

50635
50635
50635
50635
50635

A23R13
A23Ul

3698-7229
1826-0423

8
8

1
1

19701
27014

50635
LM317K

A23Wl

35660-60070

2

1

28480

85660-60070

A23W2

35660-60068

8

1

28480

85660-60068

A23W3

35660-60069

9

1

7ESISTOR 511 +-1% .05W TF TC=O+-100
IC REGULATOR TO-3
(MUST BE ORDERED SEPARATELY)
:ABLE ASSEMBLY, COAX 3 (A19 TO A26)
(MUST BE ORDERED SEPARATELY)
:ABLE ASSEMBLY, COAX 84 (A19 TO A6A12)
(MUST BE ORDERED SEPARATELY)
:ABLE ASSEMBLY, COAX 8 (A21 TO AllJl)
(MUST BE ORDERED SEPARATELY)

28480

85660-60069

A23W4

35660-60124

7

1

28480

85660-60124

A23W5

3120-2800

6

1

28480

8120-2800

A23W6

3120-2804

0

1

28480

8120-2804

A23W7

3120-2802

8

1

28480

8120-2802

511
511
511
511
511

+-1%
+-I%
+-1%
+-1%
+-1%

.05W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100

:ABLE ASSEMBLY, COAX 7 (A21 TO AllA3)
(MUST BE ORDERED SEPARATELY)
16-PIN CABLE ASSEMBLY
[MUST BE ORDERED SEPARATELY)
!6-PIN CABLE ASSEMBLY
[MUST BE ORDERED SEPARATELY)
SO-PIN CABLE ASSEMBLY

-

8.5660-60041 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60041
A23 Motherboard
*‘- raft
- - ’ C
nr
Number D

Reference
1 Designation
A23XA8

t

I

Qt
C

1251-2026

8

1251-2035
1251-2026
1251-2035
1251-2035
1251-2035

9 ~
8
9
9
9

A23XAl OA6
A23XAlOA7
A23XAlOA8
A23XA12Pl
A23XA12P2

1251-2035
1251-2026
1251-2026
1251-7312
1251-2026

A23XA12P3
A23XA15Pl
A23XA15P2
A23XA15P3
A23XA16Pl

A23XAlOAl
A23XAlOA2
A23XAlOA3
A23XAl OA4
A23XAlOA5

I 1
1
1
1
1
1

I

I
Description

Y
I

--. I
Mfr
Code

(MUST BE ORDERED SEPARATELY)
CONNECTOR-PC EDGE 18-CONT/ROW 2-ROWS

Mfr Part
Number
SCM18D/7-1HP

26742

CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC

EDGE
EDGE
EDGE
EDGE
EDGE

15-CONT/ROW
18-CDNT/ROW
15-CONT/ROW
15-CDNT/ROW
15-CDNT/ROW

2-ROWS
2-ROWS
2-ROWS
2-ROWS
2-ROWS

9
8
8
5
8

CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC

EDGE
EDGE
EDGE
EDGE
EDGE

15-CDNT/ROW
18-CDNT/RDW
18-CONT/RDW
25-CDNT/ROW
18-CDNT/RDW

E-ROWS
L-ROWS
2-ROWS
2-ROWS
2-ROWS

26742

1251-2035
1251-7312
1251-2026
1251-2035
1251-2026

9
5
8
9
8

CONNECTOR-PC EDGE 15-CONT/ROW
CONNECTOR-PC EDGE 25-CDNT/ROW
CONNECTOR-PC EDGE 18-CONT/ROW
CONNECTOR-PC EDGE 15-CONT/RDW
CONNECTOR-PC EDGE 18-CONT/ROW

2-ROWS
2-ROWS
2-ROWS
2-ROWS
2-ROWS

26742
00779

A23XA16P2
A23XA17
A23XA18
A23XA19
A23XA20

1251-2035
1251-1365
1251-2026
1251-2026
1251-2035

9
6
8
8
9

CONNECTOR-PC EDGE 15-CONT/RDW
CONNECTOR-PC EDGE 22-CONT/ROW
CONNECTOR-PC EDGE 18-CDNT/ROW
CONNECTOR-PC EDGE 18-CONT/ROW
CONNECTOR-PC EDGE 15-CONT/ROW

2-ROWS
2-ROWS
2-ROWS
2-ROWS
E-ROWS

26742
26742

26742

220-624-03
220-626-03
SCM18D/7-1HP
SCM18D/7-1HP
220-624-03

A23XA21

1251-2035

9

CONNECTOR-PC EDGE 15-CONT/ROW 2-ROWS

26742

220-624-03

*Indicates factory-selected value

26742
26742
26742

00779

26742

220-624-03
SCM18D/7-1HP
220-624-03
220-624-03
220-624-03
220-624-03
SCM18D/7-IHP
SCM18D/7-1HP
l-530843-6
SCM18D/7-IHP
220-624-03
l-530843-6
SCM18D/7-1HP
220-624-03
SCM18D/7-1HP

8566040041 Parts List
Page 3 of 3

I
I

HP Part Number 85660-60368
A23 Motherboard
Reference
Designation

HP Part C
Number D Qty

Description

Mfr
Code

Mfr Part
Number

A23

85660-60368

1

1

BOARD ASSEMBLY, MOTHERBOARD
(SERIAL PREFIX: 3001~)

28480

85660-60368

A23Cl
A23C2

0180-0452
0180-0454

8
0

1
1

28480
28480

0180-0452
0180-0454

A23C3

0180-0453

9

1

CAPACITOR-FXD .031F +75-10% 25VDC AL
CAPACITOR-FXD 4200UF +75-10% 75VDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD 8700UF +75-10% 40VDC AL
(MUST BE ORDERED SEPARATELY)

28480

0180-0453

A23C4

0180-2798

9

1

28480

0180-2798

A23C5

0160-3879

7

1

CAPACITOR-FXD .03F +lOO-10% 20VDC AL
(MUST BE ORDERED SEPARATELY)
CAPACITOR-FXD .OlUF +-20x 1OOVDC CER

04222

SR201C103MAAH

A23C6
A23C7

0160-0127
0170-0073

2
8

1
1

04222
28480

SR835E105MAAH
0170-0073

A23CRl
A23CR2
A23DSl

1901-0743
1901-0050
1990-0517

1
3
4

1
1
1

CAPACITOR-FXD 1uF 50 V
CAPACITOR-FXD 1UF 600V
(400HZ OPTION ONLY)
DIODE-PWR RECT lN4004 400V 1A DO-41
DIODE-SWITCHING 80V 200MA 2NS DO-35
LED-LAMP LUM-INT=3MCD IF=20MA-MAX BVR=SV

71744
9N171
28480

lN4004
lN4150
5082-4655

A2352
A2353
A23Kl
A23Ll
A23L2

1251-5799
1252-2689
0490-1647
85660-80007
85660-80007

8
1
2
7
7

1
1
1
1
1

CONN-POST TYPE .lOO-PIN-SPCG 20-CONT
CONN-HEADER. VERTICAL, 6-PIN
RELAY 2C 24VDC-COIL 5A 115VAC
INDUCTOR P/S FILTER
INDUCTOR P/S FILTER

76381
28480
77342
28480
28480

3428-2303
1252-2689
R40-E0161-1
85660-80007
85660-80007

A23L3
A23L4
A23L5
A23L6
A23L7

85660-80007
85660-80007
85660-80007
85660-80007
85660-80007

7
7
7
7
7

1
1
1
1
1

INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR
INDUCTOR

28480
28480
28480
28480
28480

85660-80007
85660-80007
85660-80007
85660-80007
85660-80007

A23L8
A23MPl
A23MP2
A23MP3
A23MP4

85660-80007

7

1

28480

85660-80007

0380-0076
0590-1491
2200-0105

6
6
4

4
11
2

INDUCTOR P/S FILTER
NOT ASSIGNED
SPACER-RVT-ON .5-IN-LG .152-IN-ID
THREADED INSERT-STDF 4-40 .156-IN-LG
SCREW SM440 .312
(MUST BE ORDERED SEPARATELY)

00866
46384
28480

KFE-440-5-ET
2200-0105

A23MP5
A23MP6

0590-0519
85660-00026

7
2

14
1

46384
28480

KF2-440-ET
85660-00026

A23MP7

1520-0205

2

2

28480

1520-0205

A23MP8

85660-20093

5

2

THREADED INSERT-NUT 4-40 .062-IN-LG STL
SHOCK-MOUNT, BOTTOM
(MUST BE ORDERED SEPARATELY)
SHOCK-MOUNT, .31HG
(MUST BE ORDERED SEPARATELY)
STANDOFF-YTD CASTING SUPPORT

28480

85660-20093

A23MP9
A23MPlO
A23MPll

0890-0324
0890-0324
0460-0778

8
8
5

1
1
1

09795
09795
28480

II-TW.FR-1
II-TW,FR-1
0460-0778

A23MP12

85660-00027

3

1

TUBING-FLEX .032-ID TFE .OlL-WALL
TUBING-FLEX .032-ID TFE .012-WALL
TAPE PC, 6.85IN
(MUST BE ORDERED SEPARATELY)
HEAT SINK INSULATOR
(MUST BE ORDERED SEPARATELY)

28480

85660-00027

A23MP13

85660-20061

7

1

28480

85660-20061

A23MP14

0340-0923

8

10

28480

0340-0923

P/S
P/S
P/S
P/S
P/S

FILTER
FILTER
FILTER
FILTER
FILTER

TRANSISTOR HEAT SINK
(MUST BE ORDERED SEPARATELY)
INSULATOR, SPACER, .188L .115ID
(MUST BE ORDERED SEPARATELY)

*Indicates factory-selected value

85660-60368 Parts List
Page 1 of 3

HP Part Number 85660-60368
A23 Motherboard
Reference
Designation

HP Part
Number

2
0 mY
-

A23MP15

2200-0111

2

A23MP16

0340-1114

1

A23MP17

2680-0129

8

A23Pl
A23P2

1251-0600
1251-0600

0
0

A23P3
A23P4
A23P7
A23P8
A23P9

1251-0600
1251-0600
3360-1788
3360-1788
3360-1788

0
0
7
7
7

A23Ql

1854-0618

8

1

A2342

1854-0294

0

1

A23Q3

1854-0618

8

1

A2394

1854-0679

1

1

A23Rl
A23R2
A23R3
A23R4
A23R5

3757-0421
1687-3321
3683-7515
3686-7525
3683-2225

4
0
4
2
3

A23R6
A23R7
A23R8
A23R9
A23RlO

1698-0084
1698-7229
3698-7229
1698-7229
1698-7229

A23Rll
A23R12
A23R13
A23Ul

10

Mfr
Code

Description

Mfr Part
Number

SCREW SM440 .500 PNPD
(MUST BE ORDERED SEPARATELY)

28480

2200-0111

INSULATOR, TRANSISTOR TO-3ADH
(MUST BE ORDERED SEPARATELY)
SCREW SM1032 .312 PNPD
(MUST BE ORDERED SEPARATELY)
CONNECTOR-SGL CDNT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ

28480

0340-1114

28480

2680-0129

SQ
SQ

27264
27264

16-06-0034
16-06-0034

SQ
SQ
SQ
SQ

27264
27264
04574
04574

16-06-0034
16-06-0034

TRANSISTOR NPN SI DARL TO-3 PD=15OW
(MUST BE ORDERED SEPARATELY)
TRANSISTOR NPN SI TO-3 PD=115W FT=SOOKHZ
(MUST BE ORDERED SEPARATELY)

04713

MJ3000

28480

1854-0294

TRANSISTOR NPN SI DARL TO-3 PD=lSOW
(MUST BE ORDERED SEPARATELY)
TRANSISTOR NPN 2N5885 SI TO-8 PD=2OOW
(MUST BE ORDERED SEPARATELY)

04713

MJ3000

28480

1854-0679

1
1
1
1
1

RESISTOR 825 +-1% .125W TF TC=O+-100
RESISTOR 3.3K 10% .5W CC TC=0+647
RESISTOR 750 5% .25W CF TC=O-400
RESISTOR 7.5K 5% .5W CC TC=0+647
RESISTOR 2.2K 5% .25W CF TC=O-400

19701
01121
2M627
01121
2M627

SFR25H
EB3321
R-25J
EB7525
R-25J

9
8
8
8
8

1
1
1
1
1

RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR

19701
19701
19701
19701
19701

SFR25H
50635
50635
50635
50635

1698-7229
1698-7229
3698-7229
1826-0423

8
8
8
8

1
1
1
1

19701
19701
19701
27014

50635
50635
50635
LM317K

A23Wl

35660-60070

2

1

RESISTOR 511 +-1% .05W TF TC=O+-100
RESISTOR 511 +-1X .05W TF TC=O+-100
RESISTOR 511 +-1X .05W TF TC=O+-100
IC REGULATOR TO-3
(MUST BE ORDERED SEPARATELY)
CABLE ASSEMBLY, COAX 3 (A19 TO A26)
(MUST BE ORDERED SEPARATELY)

28480

85660-60070

A23W2

35660-60068

8

1

28480

85660-60068

A23W3

35660-60069

9

1

CABLE
(MUST
CABLE
(MUST

28480

85660-60069

A23W4

35660-60124

7

1

28480

85660-60124

A23W5

3120-2800

6

1

28480

8120-2800

CONNECTOR-SGL CONT PIN 1.14-MM-BSC-SZ
CONNECTOR-SGL CONT PIN 1.14~MM-BSC-SZ
CONNECTOR-SGL CONT PIN .045-IN-BSC-SZ
CONNECTOR-SGL CONT PIN .045-IN-BSC-SZ
CONNECTOR, SINGLE MALE SQ.045
(400HZ OPTION ONLY)

2.15K 1%
511 +-1%
511 +-1%
511 +-1%
511 +-1%

.125W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100
.05W TF TC=O+-100

ASSEMBLY, COAX 84 (A19 TO A6A12)
BE ORDERED SEPARATELY)
ASSEMBLY, COAX 8 (A21 TO AllJl)
BE ORDERED SEPARATELY)

CABLE ASSEMBLY, COAX 7 (A21 TO AllA3)
(MUST BE ORDERED SEPARATELY)
16-PIN CABLE ASSEMBLY
(MUST BE ORDERED SEPARATELY)

-

8566040368 Parts List
Page 2 of 3

*Indicates factory-selected value

HP Part Number 85660-60368
A23 Motherboard

Reference
Designation

HP Part
Number

C
D

at)
-

Mfr
Code

Description

A23W6

3120-2804

0

1

26-PIN CABLE ASSEMBLY
(MUST BE ORDERED SEPARATELY)
50-PIN CABLE ASSEMBLY
(MUST BE ORDERED SEPARATELY)

A23W7

3120-2802

8

1

A23XA8
A23XAlOAl
A23XAlDA2
A23XAlOA3
A23XAlOA4

1251-2026
L251-2035
1251-2026
1251-2035
1251-2035

8
9
8
9
9

1
1
1
1
1

CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC

EDGE
EDGE
EDGE
EDGE
EDGE

18-CONT/ROW 2-ROWS
15-CONT/ROW 2-ROWS
18-CONT/RDW L-ROWS
15-CONT/ROW E-ROWS
15-CONT/RDW 2-ROWS

A23XAlOA5
A23XAl OA6
A23XAlOA7
A23XAl OA8
A23XA12Pl

1251-2035
1251-2035
1251-2026
1251-2026
1251-7312

9
9
8
8
5

1
1
1
1
1

CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC
CONNECTOR-PC

EDGE
EDGE
EDGE
EDGE
EDGE

15-CONT/ROW
15-CONT/ROW
18-CDNT/ROW
18-CDNT/ROW
25-CDNT/ROW

L-ROWS
2-ROWS
2-ROWS
2-ROWS
2-ROWS

A23XA12P2
A23XA12P3
A23XA15Pl
A23XA15P2
A23XA15P3

1251-2026
1251-2035
1251-7312
1251-2026
1251-2035

8
9
5
8
9

1
1
1
1
1

CONNECTOR-PC EDGE 18-CDNT/ROW
CONNECTOR-PC EDGE 15-CONT/ROW
CONNECTOR-PC EDGE 25-CONT/ROW
CONNECTOR-PC EDGE 18-CONT/ROW
CONNECTOR-PC EDGE 15-CONT/ROW

2-ROWS
E-ROWS
2-ROWS
2-ROWS
2-ROWS

A23XA16Pl
A23XA16P2
A23XAl7
A23XA18
A23XA19

.251-2026
.251-2035
.251-1365
.251-2026
.251-2026

8
9
6
8
8

1
1
1
1
1

CONNECTOR-PC EDGE 18-CDNT/ROW
CONNECTOR-PC EDGE 15-CDNT/ROW
CONNECTOR-PC EDGE 22-CONT/RDW
CONNECTOR-PC EDGE 18-CDNT/ROW
CONNECTOR-PC EDGE 18-CDNT/RDW

2-ROWS
2-ROWS
L-ROWS
L-ROWS
2-ROWS

A23XA20
A23XA21

.251-2035
.251-2035

9
9

1
1

CONNECTOR-PC EDGE 15-CONT/ROW 2-ROWS
CONNECTOR-PC EDGE 15-CONT/ROW 2-ROWS

Mfr Part
Number

28480

8120-2804

28480

8120-2802

26742
26742
26742
26742
26742

00779

26742
00779
26742

26742
26742

26742
26742

SCM180/7-1HP
220-624-03
SCM18D/7-1HP
220-624-03
220-624-03
220-624-03
220-624-03
SCM18D/7-1HP
SCM18D/7-1HP
l-530843-6
SCM18D/7-IHP
220-624-03
l-530843-6
SCM18D/7-1HP
220-624-03
SCM18D/7-1HP
220-624-03
220-626-03
SCM18D/7-1HP
SCM18D/7-IHP
220-624-03
220-624-03

-

*Indicates factory-selected value

8566040368 Parts List
Page 3 of 3

c-

I

1

1 J1

I(A23~6)

I
-

I
-

XAl8

I

[J31

(AllA2W2)

FRONT

1

XAlOA3

1

1

XA10A4

1

1

XA10A5

j

1

XAIOAG

1

)

XAlOA7

1

1

XAIOAB

]

* LOADED FOR OPTION 400

(A22Wl)

J 4 (A:+3:;
J’S (A23W3)
1

25

00J7 (A23W4)
XA21
1
REAR

r-Js-7

[

1

XA15P3

1

1

XA15P2

1

XAl6P2

1

1

XAl6Pl

1

XAlZP3

)

1

XAlZP2

]

L

@23w72_

(

XAlZPl

(400Hz ) O N L Y

L7 I N D I C A T E S C O M P O N E N T O N R E V E R S E S I D E

A23 Motherboard Component Locations, 85660-60041

J

I

1

1 Jl i(A23W6)
I
-

1
-

r-lI
XA7A5P 1

I

’

m

m

XA17

FRONT

1

XA10A3

]

(

XA10A4

1

[

XAlOA5

1

1

XAlOA6

1

1

XAlOA7

1

1

XAlOAB

]

* LOADED FOR OPTION 400

I

I

I

(A22Wl)

m

REAR

r-j7-7

1

XA15P3

j

1

XA15P2

1

L

XA16PZ

1

1

XAIGPI

1

[

XA12P3

]

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XA12P2

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1

XAlZPl

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(400Hz) O N L Y

-7 I N D I C A T E S C O M P O N E N T O N R E V E R S E S I D E

A23 Motherboard Component Locations, 85660-60368

I

( P / O A23W7)
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A23 Motherboard Instrument BUS, Interconnect Diagram

General Parts Listing
Introduction
This chapter contains information on ordering replacement parts and assemblies. The parts
lists document all assembly versions up to the time that the manual is printed.
Table 1 lists reference designations, abbreviations, and value multipliers used in the parts lists.
Table 2 lists the names and addresses that correspond to the manufacturer code numbers in
the parts lists.
Table 3 lists the various types of AC power cables that are available, their description, and
part numbers.
Table 4 lists all major assemblies, part numbers, and descriptions of the assemblies.
Table 5 lists cables, part numbers, and descriptions of the cables .
Table 6 lists miscellaneous parts, part numbers, and descriptions of the parts.
Figures 1 through 9 illustrate the locations of instrument assemblies and hardware with the
part numbers listed.

General Parts List Format
The following information is listed for each part:
1. The Hewlett-Packard part number.
2. The part number check digit (CD).
3. The total quantity (Qty) in the assembly. (This number is stated once and only at the first
mention of the part.)
4. The description of the part.
5. A five-digit code indicating a typical manufacturer of the part.
6. The manufacturer part number.

Ordering Information
To order a part listed in the general parts table, quote the HP part number, include the check
digit, and indicate the quantity required. Address and mail the order to the Hewlett-Packard
Sales and Service Office nearest you. The check digit ensures accurate and timely processing
of your order.
To order a part that is not listed in the general parts table, include the function and
description of the part, and the number of parts required. Address and mail the order to the
Hewlett-Packard Sales and Service Office nearest you.

General Parts Listing 1

Direct Mail-Order System
Within the USA, Hewlett-Packard can supply parts through a direct mail-order system.
Advantages of using the system are as follows:
1. Direct ordering and shipment from the Hewlett-Packard Parts Center in Mountain View,
California.
2. No maximum or minimum quantity requirement on any mail order. (There is a
minimum-order quantity imposed on orders made through the Hewlett-Packard Sales and
Service Offices when the orders require billing and invoicing.)
3. Prepaid transportation. (There is a handling charge added to each order.)
4. No invoices.
A check or money order must accompany direct-mail orders. Mail-order forms and specific
ordering information are available from Hewlett-Packard Sales and Service Offices.

Direct Phone-Order System
A phone-order system is available within the USA for regular and hotline replacement parts
service. Hewlett-Packard has provided a toll-free phone number, and accepts Mastercard or
Visa for orders.
Regular Orders
The toll-free phone number is (800) 227-8164. It is available 6 am to 5 pm (Pacific time),
Monday through Friday. Regular orders require a four-day delivery time.
Hotline Orders
The hotline service for ordering emergency parts is available 24 hours a day, 365 days a
year. There is an additional charge on hotline orders to cover the cost of freight and special
handling.
The toll-free hotline phone number is (800) 227-8164, available 6 am to 5 pm (Pacific time),
Monday through Friday. The phone number for after-hours, weekends, and holidays is (415)
968-2347. Hotline orders are normally delivered the following business day.

2 General Parts Listing

Table 1. Reference Designations, Abbreviations, and Multipliers (1 of 4)
A
AT
B
BT
C
CP
CR

Assembly
Attenuator, Isolator,
Limiter, Termination
Fan, Motor
Battery
Capacitor
Coupler
Diode, Diode
Thyristor, Step
Recovery Diode,
Varactor

DC
DL

Directional Coupler
Delay Line

DS

Annunciator, Lamp,
Light Emitting
Diode (LED),

E

Thermistor
Switch
Transformer
Terminal Board
Thermocouple
Test Point
Integrated Circuit,
Microcircuit
Electron Tube
Breakdown Diode

K
L

Jack
Relay
Coil, Inductor

TP
U

M
MP

Meter
Miscellaneous

V

P

Q

VR

Mechanical Part

(Zener),

Electrical Connector
(Movable Portion), W

Voltage Regulator
Cable, Wire, Jumper

Plug
Silicon Controlled
Rectifier (SCR),

Socket
Crystal Unit
(Piezoelectric,

X
Y

Transistor,

Quartz)

(Visible)

Triode Thyristor Z

Tuned Cavity,

Miscellaneous Electrical Part R

Resistor

Tuned Circuit

ABBREVIATIONS
Basic
Button
C

CNDCT Conducting,
Conductive,
Conductivity,
Conductor

BSC
BTN

Capacitance,
Capacitor,
Center Tapped,

CONT Contact,
Continuous,
Control,
Controller

(formerly

Cermet, Cold,

CONV Converter

USASI-ASA)

Compression

CPRSN Co mpression

Across Flats, Acrylic,
Air (Dry Method),

Ampere
Adjust, Adjustment
4DJ
4NSI American National
Standards Institute

4SSY Assembly
4WG American Wire Gage
B
BCD

RT
S
T
TB
TC

Signaling Device

A
A

REFERENCE DESIGNATIONS
F
Fuse
Filter
FL
HY
Circulator
J
Electrical Connector
(Stationary Portion),

Binary Coded

Decimal
BD
Board, Bundle
BE-CU Beryllium Copper
Type of Connector
BNC
Bearing, Boring
BRG
Brass
BRS

C

Carbon Composition CUP-PT
Plastic
c w
Cadmium, Card,
CD
Cord
CER Ceramic
CHAM Chamfer
CIIAR Character,
Characteristic,
D
Charcoal
CCP

CMOS Complementary
Metal Oxide
Semiconductor

DA

Cup Point
Clockwise,
Continuous Wave

D
Deep, Depletion,
Depth, Diameter,
Direct Current
Da.rlington

General Parts Listing 3

Table 1. Reference Designations, Abbreviations, and Multipliers (2 of 4)
DAP-GL Diallyl Phthalate
Glass
Double
DBL
DCDR

Decoder

Degree
DEG
D-HOLE D-Shaped Hole
Diameter
DIA
Dual In-Line Package
DIP
DIP-SLDR Dip Solder
D-MODE Depletion Mode
Package Type
DO
Designation
DP
DPST
DPDT
DWL

ABBREVIATIONS
FT
Current Gain
Bandwidth Product
(Transition

Deep, Depth, Diametric Pitch, Dip
Double Pole Three
Throw
Double Pole Double
Throw
Dowel1
E

E-R

E-Ring

EXT

Extended, Extension:
External, Extinguish

1
JFET

K

Frequency), Feet,
Foot
FXD Fixed
G
GEN General, Generator
GND Ground
General Purpose,
GP

K

Kelvin, Key,
Kilo, Potassium
KNRLD Knurled
KVDC Kilovolts
Direct Current

L

Group
LED
H
H
Henry, High
HDW Hardware
I I E X IIexadecimal,
Hexagon,

LG
LIN
LK
LKG
LUM

Hexagonal
HLCL Helical
HP
Hewlett-Packard

M
M

Collector Current,
Integrated Circuit
Identification,
Inside Diameter

MA
MACH
MAX
MC

Male, Maximum,
Mega, Mil, Milli,
Mode
Milliampere
Machined
Maximum
Molded Carbon

Forward Current,
Intermediate

MET

Composition
Metal, Metallized

I
[C

FC

FDTHRU

Fahrenheit, Farad,
Female, Film
(Resistor), Fixed,

1D

Flange, Frequency
Carbon Film/

1F

Composition, Edge
of Cutoff Frequency,
Face

Frequency
[N
Inch
[NCL I n c l u d i n g
Integral, Intensity,
[NT
Internal

Feedthrough
Female
Fillister Head
Flash, Flat, Fluid

FEM
FIL-HD
FL
?LAT-PT F l a t P o i n t
Front
?R
Frequency
?REQ

4 General Parts Listing

Light Emitting
Diode
Length, Long
Linear, Linearity
Link, Lock
Leakage, Locking
Luminous

Company, High Pass

F
F

Junction Field
Effect Transistor

J
I-FET Junction Field
Effect Transistor

MHZ
Megahertz
MINTR Miniature
MIT
Miter
MLD
MM

Mold, Molded
Magnetized Material,
Millimeter
MOM
Momentary
MTG
Mounting
MTLC Metallic
Milliwatt
MW

Table 1. Reference Designations, Abbreviations, and Multipliers (3 of 4)

N

N

ABBREVIATIONS
PLSTC Plastic
PNL
Panel

Nano, None

PNP

N-CHAN N-Channel

SMA

Subminiature,
A Type (Threadec

SMB

Subminiature,

Positive Negative
Positive (Transistor

Connector)

NH

Nanohenry

POLYC Polycarbonate

B Type (Slip-on

NM

Nanometer,

POLYE Polyester

Connector)

NO

Nonmetallic
Normally Open,

POT
POZI

Potentiometer
Pozidriv Recess

Number

PREC

Precision

NOM
NPN
NS
NUM
NYL

Nominal
PRP
Negative Positive
PSTN
Negative (Transistor) PT

Part, Point,

Nanosecond,
Non-Shorting, Nose

Pulse Time
Pulse Width

PW

Purple, Purpose
Piston

Numeric
Nylon (Polyamide)

3

P
PA

Picoampere, Power
Amplifier
PAN-HD Pan Head
Parallel, Parity
PAR
Lead (Metal),
PB
PC
PCB

Pushbutton
Printed Circuit
Printed Circuit
Board

P-CHAN P-Channel
PD
Pad, Power
Dissipation
PF
PKG

Picofarad, Power
Factor
Package

SPCG
SPDT

Spacing
Single Pole
Double Throw

SPST

Single Pole
Single Throw
Square
Stainless Steel

SST

Q
Figure of Merit

Submi niature,
C-Type (Threaded
Connector)

SQ

0
Over-All
OA
Outside Diameter
OD
OP AMP Operational
Amplifier
Optical, Option,
OPT
Optional

SMC

Steel
STL
SUBMIN Subminiature
Size
sz

R

R

T

REF

Range, Red,
Resistance, Resistor
Right, Ring
Reference

RES

Resistance, Resistor

Thickness, Time,

RF
XGD
IND
IR
2VT

Radio Frequency
Rigid
Round
Rear
Rivet, Riveted

TC

Timed, Tooth,
Typical
Ambient
Temperature,
Tantalum
Temperature

THD
THK
TO

Coeffi cient
Thread, Threaded
Thick
Package Type

TPG
I’R-HD

Designation
Tapping
Truss Head

I’RMR
TRN
I’RSN

Trimmer
Turn, Turns
Torsion

T

TA

S
;AWR

Surface Acoustic
Wave Resonator

;EG
;GL
;I

Segment
Single
Silicon,
Square Inch
Slide, Slow
Slot. Slotted

;L
;LT

Teeth,
Temperatu re,

General Parts Listing 5

Table 1. Reference Designations, Abbreviations, and Multipliers (4 of 4)
ABBREVIATIONS
U
Microcandela
Microfarad
Microhenry
Microliter,

UCD
UF
UH
UL

Y

VAR
Variable
VDC Volts-Direct Current

Underwriters’
Laboratories, Inc.
UNHDND Unhardened

Y I G Yttrium-IronGarnet
w
Watt, Wattage,
White, Wide, Width
W/SW With Switch

Z

W

w w

ZNR Zener

Wire Wound

V
X

V

Variable, Violet,
Volt, Voltage

VAC

X

By (Used with

Vacuum, Volts-

Dimensions),

Alternating Current

Reactance

Abbreviation

Prefix

T
G
M
k
da
d

tera

C

6 General Parts Listing

gig a
mega
kilo
deka
deci
centi

MULTI ‘LIERS
Multble Abbreviation
10’2
log
lo6
lo3
lo2
10-r
10-Z

m
P
n
P

f
a

Prefix

Multiple

milli
micro
nano
pica
femto
atto

10-s
lo+
10-s
10-12
10-15
10-l”

Table 2. Manufacturers Code List
Mfr
Code

Manufacturer Name

Address

Countr: V

ZIP
Code

0003!

NEC ELECTRONICS INC

MTN VIEW, CA

us

9404:

0004t

UNITRODE CORP

LEXINGTON, MA

us

0217:

0007:

ARIZONA COIL INC

NOGALES, AZ

us

85621

0027:

STILLWATER MFG CO

EAST FREEDOM, MA

us

0271;

0027t

MCCOY ELECTRONICS CO

HOLLY SPRINGS, PA

us

1706:

0035(

EXAR INTEGRATED SYSTEMS INC

SUNNYVALE, CA

us

94086

0046C

NORELCO NORTH AMER PHILIPS LTG CORF

LOS ANGELES, CA

us

90021

0049:

UNITED CHEMI-CON INC

COMPTON, CA

us

9022c

0074t

ROHM CORP

IRVINE, CA

us

92712

3077s

NICHICON (AMERICA) CORP

SCHAUMBERG, IL

us

150195

3083C

KYOCERA INTERNATIONAL INC

SAN DIEGO, CA

us

30901 UNION CARBIDE CORP

DANBURY, CT

us

I16810

11064 SCHAAL BROS INC

BERTHOUD, CO

us

I30513

11074 HOLSWORTHY ELECTRONICS LTD

HOLSWORTHY

EG

11128 RES-NET CORP

WHIPPANY, NJ

us

11131 WESTERN THERMISTOR CORP

3CEANSIDE, CA

us

c32054

11136 ELCO INDUSTRIES INC

ROCKFORD, IL

us

f$1125

11172 R C D COMPONENTS INC

3EDFORD, NH

us

(13102

11185 MAGNET WIRE CORP

VEW YORK, NY

us

I.0013

)1230

\TEW BEDFORD, MA

us

C)2741

11250 GTE SYLVANIA ELEK COMPONENTS GROUP

UlrALTHAM, MA

us

c)2154

11339

3ETTIG ENGRG & MFG CO INC

jPRING MILLS, PA

us

1-6875

0138C

AMP INC

HARRISBURG, PA

us

17111

3140s

CROVEN CRYSTALS

WHITBY

CN

31415 NEL FREQUENCY CONTROLS INC

BURLINGTON, WI

us

1,lN :
,53105

11452 SANGAMO WESTON INC

NORCROSS, GA

us

30071

11461 GOE ENGINEERING CO INC

ONTARIO, CA

us

!31761

31468 STETTNER & CO

LAUF

GM

1l-858

11478 BOYD CORP

PLEASANTON, CA

us

!34566

11542 HP DIV 01 SAN JOSE COMPONENTS

SAN JOSE, CA

us

s35131

11590 PLESSEY SEMICONDUCTORS

SANTA ANA, CA

us

!32705

11607 ALLEN-BRADLEY CO INC

EL PASO, TX

us

779935

11688 MURATA CORPORATION OF AMERICA

MARIETTA, GA

us

I30067

TRW INC SEMICONDUCTOR DIV

LAWNDALE, CA

us

I)0260

11691

AEROVOX CORP

(17981

11698 TEXAS INSTRUMENTS INC

3ALLAS, TX

us

i‘5265

11708 JUBULATION

SANTA CRUZ, CA

us

E$5060

11736 ALLIED ELECTRONICS CORP

?HICAGO, IL

us

ciO612

)1760

MATSUO ELECTRONICS OF AMERICA

RJNTINGTON BEACH, CA

us

EbO245

)1795

SYNERTEK

SANTA CLARA, CA

us

sb5051

11850

4ROMAT CORP

tiOUNTAINSIDE, NJ

us

C)7092

U854

ICL ELECTRONICS INC

JORTHBROOK, IL

us

ELOO62

11869

‘ULSE ENGINEERING INC

;AN DIEGO, CA

us

s12111

11876

IP DIV 02 SCD IC’S

SANTA CLARA, CA

us

s15050

11885

3AMILTON STANDARD CONTROLS INC

NINDWOR LOCKS, CT

us

C 16096

11886

=OILCRAFT INC

:ARY, IL

us

6 ioo13

11887

“ERROXCUBE CORP

SAUGERTIES, NY

us

1 2477

General Parts Listing 7

Table 2. Manufacturers Code List (continued)
Mfr
Code

Manufacturer Name

Address

Zountr

ZIP
Cod

0189E 5 HI-G CO INC

HARTFORD, CT

us

0611

0191e i BUNKER RAM0 CORP AMPHENOL CONN DI’

BROADVILLE, IL

us

6015.

01921 RCA CORP

NEW YORK, NY

us

1011

0192: I NYLOGRIP PRODUCTS

WALTHAM, MA

us

0215.

019241 ITW FASTEX

DES PLAINES, IL

us

60011
92662

0193S I ELPAC INC COMPONENTS DIV

IRVINE, CA

us

01943 HP DIV 04 SPD CABLES 64

PALO ALTO, CA

us

9430‘

01953

PALO ALTO, CA

us

9430.

01973 I GE CO SEMICONDUCTOR PROD DEPT

AUBURN, NY

us

1320:

01991

TRANSITRON ELECTRONIC CORP

WAKEFIELD, MA

us

0188(

01992

KDI PYROFILM CORP

HP DIV 04 SPD MOLDING 91

WHIPPANY, NJ

us

0798:

01993 1MARKEL CORP

NORRISTOWN, PA

us

194oz

02010

GREAT NECK, NY

us

11021

02030 1NATIONAL WIRE & CABLE CO INC

AVX CORP

LOS ANGELES, CA

us

90031

02037 1MOTOROLA INC

ROSELLE, IL

us

60191

02038 1UNICORP

ORANGE, NJ

us

0705(

02062 1HP DIV 05 MSD
02086 7WESTINGHOUSE ELEC CORP SEMICON DEP’I

SAN JOSE, CA

us

94301

YOUNGWOOD, PA

us

15695

GRAND JUNCTION, CO

us

81501

02123 I3G & G INC

WELLESLEY, MA

us

02181

32139 IMEPCO/ELECTRA INC

\?ORRISTOWN, NJ

us

0796c

32145 IiAYCHEM CORP

MENLO PARK, CA

us

94025

32160 I‘ANDUIT CORP

TINLEY PARK, IL

us

6047i

12170 1\MATOM ELEK HARDWARE DIV OF MITE

VEW ROCHELLE, NY

us

36515

02091

1ULTRONIX INC

VOGALES, AZ

us

95621

12180 I‘RECISION MONOLITHICS INC

SANTA CLARA, CA

us

35054

12191 (:ORNING COMPONENTS INC

:ORNING, NY

us

14830

12194 ItOBINSON NUGENT INC

\IEW ALBANY, IN

us

17150

12210 DdILTON ROSS CO

:OUTHHAMPTON, PA

us

18966

12215 E
-

Descriptiou

Mfr
Code

Mfr Part
Number

1

PHASE LOCK ASSEMBLY (INCLUDES A6A9Al (PART
OF A6A9 PHASE LOCK ASSEMBLY. MAY NOT BE
ORDERED SEPARATELY.)

28480

35660-6022

2

1

BOARD ASSEMBLY, PHASE LOCK (SERIAL NUMBER
PREFIXES: 241oA-2503A) (PART OF A6A9 PHASE
LOCK ASSEMBLY. MAY NOT BE ORDERED
SEPARATELY.)

28480

35660-6020

85660-60324

7

1

BOARD ASSEMBLY, MISCELLANEOUS BIAS/RELAY
DRIVER (SERIAL NUMBER PREFIXES: 2747A AND
ABOVE)

28480

35660-6032

A6AlO

8566CL6018C

5

1

BOARD ASSEMBLY, MISCELLANEOUS BIAS/RELAY
DRIVER (SERIAL NUMBER PREFIXES: 2410A-2729A)

28480

35660-60181

A6All

85660-60238

4

1

BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL
NUMBER PREFIXES: 2613A AND ABOVE)

28480

35660-6023s

A6All

8566G60126

9

1

BOARD ASSEMBLY, SLOPE GENERATOR (SERIAL
NUMBER PREFIXES: 2410A-2611 A)

28480

35660-60121

46A12

65660-60366

9

1

BOARD ASSEMBLY, YIG-TUNED h4IXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 2936A AND
ABOVE)

28480

35660-60361

A6A12

65660-60235

1

1

BOARD ASSEMBLY, YIG-TUNED MIXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 2503A-2928A)

28480

35660-6023

46A12

55660-60013

3

1

BOARD ASSEMBLY, YIG-TUNED MIXER (YTX)
DRIVER (SERIAL NUMBER PREFIXES: 241oA-2449A)

28480

35660-6001:

46A13

6566~60014

4

1

BOARD ASSEMBLY, RF MODULE MOTIIERBOARD

28480

35660-6001.

46Al4

50867261

6

1

LIMITER, O-2.5 GHZ

28480

5086-7261

A6A15

9135-0067

5

1

BANDPASS FILTER, 3.6 GHZ, SMA CONNECTORS

28480

)135X067

A6A16

D955-0487

2

1

LOW PASS FILTER, 1.0 GHZ (SERIAL NUMBER
PREFIXES: 2950A AND ABOVE)

28480

1955-0487

A6A16

50867299

0

1

LOW PASS FILTER, 1.5 GHZ (SERIAL NUMBER
PREFIXES: 2410A-2949A)

28480

50867299

A6A17

0955-0117

5

1

BANDPASS FILTER, 300 MHZ

28480

1955-0117

A6A18

9135-0108

5

1

LOW PASS FILTER, 26 GHZ

28480

3135-0108

A7Al

B5660-60015

5

1

BOARD ASSEMBLY, REFERENCE PIIASE DETECTOR

28480

%5660-6001.

47A2

8566Ch60135

0

1

BOARD ASSEMBLY, 100 MHZ
VOLTAGECONTROLLED CRYSTAL OSCILLATOR
(VCXO)

28480

$5660-6013,

A7A3

B5660-60136

1

1

BOARD ASSEMBLY, M/N PIIASE DETECTOR

28480

%5660-60131

47A4

85660-60267

9

1

ASSEMBLY, M/N OUTPUT (INCLUDES A7A4Al M/N
VCO ASSEMBLY AND A7A4A2 M/N OUTPUT BOARD
ASSEMBLY)(SERIAL NUMBER PREFIXES: 2611A AND
ABOVE)

28480

$5660-6026

47A4

6566CL60113

4

1

28480

35660-6011:

-

-

ASSEMBLY, M/N OUTPUT (INCLUDES A7A4Al M/N
VCO ASSEMBLY AND A7A4A2 M/N OUTPUT BOARD
iSSEMBLY)(SERIAL NUMBER PREFIXES:
!410A-2607A)

-

General Parts Listing 19

HP Part
Number

3
-

as
-

A7A4A1

85660-60091 6

2

1

A7A4A2

85660-60261 6

8

A7A4A2

85660-6023! 9

A7A4A2

-

RF Section Assemblies (continued)
Mfr
Codf

Mfr Pari t
Number

M/N VCO ASSEMBLY (INCLUDES A7A4AlAl
OSCILLATOR ASSEMBLY AND A7A4AlA2 BOARD
ASSEMBLY)

2848C

35660-6005 I6

1

BOARD ASSEMBLY, M/N OUTPUT (SERIAL NUMBER
PREFIXES: 2611A AND ABOVE)

2848C

35660-6026 i6

5

1

BOARD ASSEMBLY, M/N OUTPUT (SERIAL NUMBER
PREFIXES: 2503A-2607A)

2848C

35660-6023 19

85660-6019: 2

9

1

BOARD ASSEMBLY, M/N OUTPUT (SERIAL NUMBER
PREFIXES: 2410A-2449A)

A7A5

85660-6026! 5

2

1

BOARD ASSEMBLY, M/N REFERENCE
MOTHERBOARD (SERIAL NUMBER PREFIXES: 2611A
AND ABOVE)

28480

35660-6026 85

47A5

55660-6002t

1

1

BOARD ASSEMBLY, M/N REFERENCE
MOTHERBOARD (SERIAL NUMBER PREFIXES:
2410A-2607A)

28480

$5660-6002 0

48

35660-60196

1

BOARD ASSEMBLY, RECTIFIER

18480

15660-6019 6

49

3960-0443

1

LINE MODULEFILTERED

18480

)960-0443

410Al

35660-60131 1

1

BOARD ASSEMBLY, PHASE LOCK LOOP 1 (PLLl)
VOLTAGE-CONTROLLED OSCILLATOR (VCO )

38480

~56606913 1

AlOA2

35660-6002:

5

1

BOARD ASSEMBLY, PHASE LOCK LOOP 1 (PLLl)
DIVIDER

!8480

15660-6002 3

llOA3

35660-6002~ 4

6

1

BOARD ASSEMBLY, PHASE LOCK LOOP 1 (PLLl) IF

!8480

15660-6002 4

ilOA4

35660-6002: i

7

1

BOARD ASSEMBLY, PHASE LOCK LOOP 3 (PLL3) UP
ZONVERTER

!8480

15660-6002 5

110A5

35660-60162 I

9

1

30ARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
VOLTAGE-CONTROLLED OSCILLATOR (VCO)

!8480

15660-6016 8

klOA6

35660-6027fj

0

1

30ARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
‘HASE DETECTOR (SERIAL NUMBER PREFIXES:
1618A AND ABOVE)

!8480

;5660-602786

ilOA6

35660-60254

4

1

30ARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
‘HASE DETECTOR (SERIAL NUMBER PREFIXES:
1511A-2613A)

!8480

~5660-6025,4

ilOA6

35660-6022C

3

1

30ARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
‘HASE DETECTOR (SERIAL NUMBER PREFIXES:
1416A-2504A)

18480

,5660-6022’9

ilOA6

35660-6013C

5

1

30ARD ASSEMBLY, PHASE LOCK LOOP 2 (PLLI)
PHASE DETECTOR (SERIAL NUMBER PREFIXES:
2410A)

18480

5660-60131 D

b10A7

65660-6002;

0

1

BOARD ASSEMBLY, PHASE LOCK LOOP 2 (PLL2)
DIVIDER

28480

35660-6002 8

410A8

85660-60171

9

1

BOARD ASSEMBLY, PHASE (PLL2) DISCRIMINATOR
LOCK LOOP 2

28480

35660-6017 ‘6

411Al

50867295

28480

iO867295

Reference
Designatol

6
-

20 General Parts Listing

Description

1
COUPLER/ISOLATOR/AMPLIFIER
-

(CIA)

Reference
Designato

HP Part
Number

- x Qt:
- -

RF Section Assemblies (continued)
Description

Mfr
Codt

Mfr Part
Number
85660-6012:

AllA

8566@6012<

6

1

BOARD ASSEMBLY, INTERCONNECT, YTO LOOP

2848C

AllA

85660-6021:

5

1

YIG-TUNED OSCILLATOR (YTO) WITH A20U8
COMPENSATION PACKAGE

2848C 85660-6021:

AllA

6566CL6021‘

6

1

REBUILT YIG-TUNED OSCILLATOR (YTO) WITH
A20U8 COMPENSATION PACKAGE

28480 85660-60214

411A3

50867314

0

1

YIG-TUNED OSCILLATOR(YT0) UNCOMPENSATED
(UNCOMPENSATED YTO IS NOT AVAILABLE FOR
FIELD REPLACEMENT.ORDER 8566&60214 OR
3566960213.)

28480

5086-7314

4llA4

35660-6017:

8

1

BOARD ASSEMBLY, YIG-TUNED OSCILLATOR (YTO)
DETECTOR

28480

55660-60175

LllA5

3566&6019%

1

BOARD ASSEMBLY, SAMPLER

28480

35660-60199

illA

3135-0187

1

:ABLE ASSEMBLY, LOW PASS FILTER, 6.2 GHZ

28480

3135-0187

i12

35660-6029C

1

30ARD ASSEMBLY, FRONT PANEL INTERFACE
SERIAL NUMBER PREFIXES: 2618A AND ABOVE)

L12

35660-60246

4

1

30ARD ASSEMBLY, FRONT PANEL INTERFACE
(SERIAL NUMBER PREFIXES: 2449A-2613A)

28480

35660-60246

A12

6566G6021

3

1

BOARD ASSEMBLY, FRONT PANEL INTERFACE
(SERIAL NUMBER PREFIXES: 2410A-2430A)

28480 85660-60211

415

85660-6024!

3

1

BOARD ASSEMBLY, CONTROLLER (SERIAL
NUMBER PREFIXES: 2503A AND ABOVE)

28480 85660-60245

415

S5660-6020s

9

1

BOARD ASSEMBLY, CONTROLLER (SERIAL
NUMBER PREFIXES: 2410A-2449A)

28480

85660-60209

416

35660-6024:

5

1

BOARD ASSEMBLY, SCAN GENERATOR (SERIAL
‘JUMBER PREFIXES: 2449A AND ABOVE)

28480

55660-60247

\16

35660-6019f

5

1

BOARD ASSEMBLY, SCAN GENERATOR (SERIAL
VUMBER PREFIXES: 2410A-2430A)

28480

35660-60198

117

35660-6032:

8

1

HOARD ASSEMBLY, POSITIVE REGULATOR (SERIAL
VUMBER PREFIXES: 2747A AND ABOVE)

28480

35660-60323

117

%566@6027:

9

1

30ARD ASSEMBLY, POSITIVE REGULATOR (SERIAL
VUMBER PREFIXES: 2607A-2729A)

28480

35660-60275

i17

15660-60174

7

1

30ARD ASSEMBLY, POSITIVE REGULATOR (SERIAL
‘JUMBER PREFIXES: 2410A-2532A)

28480

35660-60174

i18

3566S6028S

5

1

30ARD ASSEMBLY, NEGATIVE REGULATOR
SERIAL NUMBER PREFIXES: 2627A AND ABOVE)

28480

35660-60289

L18

!5660-60137

2

1

30ARD ASSEMBLY, NEGATIVE REGULATOR
SERIAL NUMBER PREFIXES: 2410A-2618A)

28480

$5660-60137

L19

15660-60212

4

1

30ARD ASSEMBLY, DIGITAL-TO-ANALOG
:ONVERTER (DAC)

28480

$5660-60212

L20

1566CL60206

6

1

30ARD ASSEMBLY, MAIN COIL DRIVER

L21

15660-60040

6
-

1
-

30ARD ASSEMBLY, FM COIL DRIVER

$5660-60206
28480

!5660-60040

General Parts Listing 21

-

RF Section Assemblies (continued)

-

20
-

A22

5062-1916

6

1

10 MHZ FREQUENCY STANDARD ASSEMBLY
(SERIAL NUMBER PREFIXES: 2728A AND ABOVE)

2848C

5062-1916

A22

85660-60046

2

1

10 MHZ FREQUENCY STANDARD (SERIAL NUMBER
PREFIXES: 2410A-2637A) (OBSOLETE. ORDER HP
PART NUMBER 5062-1916 FOR REPLACEMENT.)

2848C

85660-60046

A23

85660-60368

1

1

BOARD ASSEMBLY, MOTHERBOARD (SERIAL
NUMBER PREFIXES: 3001A AND ABOVE)

2848C 85660X.0368

A23

65660-60041

7

1

BOARD ASSEMBLY, MOTHERBOARD SERIAL
NUMBER PREFIXES: 2410A-2950A)

28480 85660-60041

424

55660-60358

9

1

FAN ASSEMBLY

28480

85660-60358

424

55660-60049

5

1

FAN ASSEMBLY (OBSOLETE. ORDER HP PART
NUMBER 8566060358 FOR REPLACEMENT.)

28480

8566040049

424

S5660-60359

0

1

FAN ASSEMBLY (400 HZ OPTION ONLY)

28480

8566040359

424

35660-60116

7

1

FAN ASSEMBLY (400 HZ OPTION) (OBSOLETE.
ORDER HP PART NUMBER 85660-66359 FOR
REPLACEMENT.)

28480

85660-60116

425

35660-60225

9
-

28480

85660-60225

Reference
Designatol

HP Part
Number

x

22 General Parts Listing

Description

1
REAR SUPPORT ASSEMBLY
-

Mfr
Codt

Mfr Part
Number

RF Section Cables

HP Part
Number

CI
-

Qt:
-

Wl

85660-6006t

6

1

CABLE ASSEMBLY, COAX 81, A6A3 LAST CONV TO
REAR PANEL JlPl

2848f 1 85660-6006f

w2

8566@6007:

5

1

CABLE ASSEMBLY, COAX 85, A7A2 100 MHZ VCXO
TO A6A9 PHASE LOCK

2848( I 85660-6007:

w3

95661X6006:

3

1

CABLE ASSEMBLY, COAX 82, A6A12 YTX DRIVER
TO REAR PANEL J4 (SWEEP + TUNE)

2848( I 85660-6006:

w4

5566G6007t

8

1

CABLE ASSEMBLY, COAX 9, A7Al REFERENCE
PHASE DETECTOR TO AlOA7 PLL2 DIVIDER

2848(I iB5660-6007t

w5

55660-6007:

9

1

CABLE ASSEMBLY, COAX 86, A7Al REFERENCE
PHASE DETECTOR TO AlOA2 PLLl DIVIDER

2848(1 I85660-6007:

b'6

135660-60072

0

1

CABLE ASSEMBLY, COAX 80, REAR PANEL J2 (FREQ
REFERENCE EXT) TO A7Al REFERENCE PHASE
DETECTOR

2848( ) 195660-60072

135660-6007:

7

1

CABLE ASSEMBLY, COAX 8, A7A2 100 MHZ VCXO TO 2848C ) 135660-6007:
AlOA4 PLL3 UP CONVERTER

N8

135660-6007:

4

1

CABLE ASSEMBLY, COAX 93, A7A4 M/N OUTPUT
TO AllA SAMPLER

2848C 1

135660-6007:

N9

135660-60074

6

1

CABLE ASSEMBLY, COAX 5, AlOAl PLLl VCO TO
AllA PHASE DETECTOR

2848C I

135660-60074

Reference e
Designata w

IV10

Description

Mfr
Codq e

Mfr Part
Number

NOT ASSIGNED

Nil

35660-20277

7

1

CABLE ASSEMBLY, AllAl DIRECTIONAL COUPLER
TO AT2 (SERIAL NUMBER PREFIXES: - 2532A AND
ABOVE)

2848C I

135660-20275

Nil

1S5660-20067

3

1

CABLE ASSEMBLY, AllAl DIRECTIONAL COUPLER
TO A6W6 (SERIAL NUMBER - PREFIXES:
2410A-2532A)

2848C I

1~5660-20067

N12

~5660-60062

2

1

CABLE ASSEMBLY, COAX 87, A22 10 MHZ
FREQUENCYREFERENCETOREARPANELJ3
(FREQ REFERENCE INT)

28480I

f

v13

t5660-60065

5

1

CABLE ASSEMBLY, COAX 4, Al6 SCAN GENERATOR
TO REAR PANEL J1P3

28480I

t$5660-60065

Y14

15660-60064

4

1

CABLE ASSEMBLY, COAX 1, Al6 SCAN GENERATOR
TO REAR PANEL J1P4

184801

615660-60064

Y15

E15660-60117

8

1

CABLE ASSEMBLY, REAR PANEL 52 REFERENCE
[NT) TO REAR PANEL 53 (FREQ REFERENCE EXT)

18480

655660-60117

Y16

EI566660067

7

1

CABLE ASSEMBLY, COAX 6, A7Al REFERENCE
PHASE DETECTOR TO REAR PANEL J5 (10 MHZ
OUT)

18480E 15660-60067

i6Wl

e15660-20073

7

1

CABLE ASSEMBLY, COAX A6J3 RF INPUT TO A6A2
RF ATTENUATOR (O-22 GHZ)

38480

I15660-20073

~6W2

8i566CL20074

2

1

CIABLE ASSEMBLY, COAX A6A2 RF ATTENUATOR
TO A6Al RF SWITCH (O-22 GHZ)

!8480

815660-20074

~6W3

8;566@20075

3

1

CABLE ASSEMBLY, COAX A6Al RF SWITCH TO
46A8 YTX (2-22GHZ)

!8480

8i5660-20075

,6W4

8,5660-20079

7

1

!8480

815660-20079

-

-

:ABLE ASSEMBLY, COAX A6A14 LIMITER TO A6A6
LST CONVERTER (O-2.5 GHZ)

General Parts Listing 23

RF Section Cables (continued)

HP Part
Number

z’r
-

a:
-

A6W5

85660-20071

4

1

CABLE ASSEMBLY, COAX A6A8 YTX TO/FROM
A6A5 ACLU

28481 0 85660-2007s

A6W6

85660-2007'

5

1

CABLE ASSEMBLY, COAX AT2 3DB ATTENUATOR
TO A6A5 ACLU (YTO LOOP OUT)

28481 0 85660-2007

A6W7

85660-2008:

2

1

CABLE ASSEMBLY, COAX A6A5 ACLU TO A6A6 1ST
CONVERTER (3.6 - 6.1 GHZ)

28481 3 85660-2008'

9

1

CABLE ASSEMBLY, COAX A6A5 ACLU TO A6J2
(FRONT PANEL) (1ST LO OUTPUT)

2848f 3

Referencr
Designato

A6W8

Description

Mfr
Cod e

Mfr Part
Number

A6WlO

B5660-2008.

1

1

CABLE ASSEMBLY, COAX A6A15 3.6GHz BPF TO
A6A4 SECOND CONVERTER (3621.4 MHZ)

2848t 1 85660-2008

46Wll

95660-6005!

3

1

CABLE ASSEMBLY, COAX 5 A6A4 SECOND
CONVERTER TO A6A9 PHASE LOCK (3.3 GHZ)

2848( I 85660-60051

46W12

!?5660-6009:

3

1

CABLE ASSEMBLY, COAX 4 A6A9 PHASE LOCK TO
A6A4 SECOND CONVERTER (TUNE VOLTAGE)

1848( 1 85660-6009'

46W13

35660-2010:

8

1

CABLE ASSEMBLY, COAX A6A5 ACLU TO A6J4
[FRONT PANEL) (IF OUTPUT)

1848( I 85660-2010:

46W14

35660-2011:

9

1

CABLE ASSEMBLY, COAX A6A16 LPF TO A6A4
SECOND CONVERTER (321.4 MHZ)

1848( I ;65660-2011:

\6W15

35660-6005;

5

1

CABLE ASSEMBLY, COAX 1 A6A4 SECOND
CONVERTER TO A6A3 LAST CONVERTER (321.4
MHZ)

!848( 1 i55660-6005;

i6W16

35660-6005E

6

1

:ABLE ASSEMBLY, COAX 0 A6A9 PHASE LOCK TO
46Jl (FRONT PANEL) (CAL OUTPUT)

!848C I I35660-6005~

16W17

35660-6005t

4

1

:ABLE ASSEMBLY, COAX 2 A6A9 PHASE LOCK TO
46A17 300 MHZ BPF (300 MHZ)

!848C ) 135660-6005~

i6W18

35660-60054

2

1

?ABLE ASSEMBLY, COAX 2 A6A17 300 MHZ BPF TO
46A3 LAST CONVERTER (300 MHZ)

!848C I 135660-60054

i6W19

3120-2847

1

1

>ABLE ASSEMBLY, 14 WIRERIBBON A6A13 RF
bfOTHERBOARD TO A6A7 YTX CURRENT DRIVER

1848C I 13120-2847

L6W20

L250-1397

2

1

YDAPTER-COAX A6Al RF SWITCH TO A6A14
JIMITER (O-2.5 GHZ)

1848C I 11250-1397

L6W21

35660-6006C

0

1

:ABLE ASSEMBLY, A6Al/A6A4/A6AS/A6Rl
SARNESS TO A6A13 RF MOTHERBOARD

1848C I 135660~6006c

L6W22

L5660-20101

6

1

:ABLE ASSEMBLY, COAX A6J4 (FRONT PANEL) (IF
IUTPUT) TO A6J5 (FRONT PANEL) (IF INPUT)
FRONT PANEL JUMPER)

18480 I 135660-20101

i6W23

15660-20102

7

1

:ABLE ASSEMBLY, COAX A6J5 (FRONT PANEL) (IF
NPUT) TO A6A16 LPF (321.4 MHZ)

8480 I 135660-20102

~6A2Wl

iO62-0701

5

1

TABLE ASSEMBLY, 14 WIRE RIBBON A6A13 RF
JOTHERBOARD TO A6A2 RF ATTENUATOR

8480 / criO62-0701

L6A8Wl

1061-1053

0

1

:ABLE ASSEMBLY, HARNESS A6A7 YTX CURRENT
IRIVER TO A6A8 YTX

8480

~7AlWl

;5660-60084

8

1

8480 8i5660-60084

-

-

:ABLE ASSEMBLY, COAX 83 A7A2 100 MHZ VCXO
r0 A7Al REFERENCE PHASE DETECTOR

24 General Parts Listing

ciO61-1053

Reference
Designator

HP Part
Number

x
-

3:
-

RF Section Cables (continued)
Description

Mfr
Code

Mfr Part
Number

A7A2Wl

8566CL6008

6

1

CABLE ASSEMBLY, COAX 96 A7A2 lo0 MHZ VCXO
TO A7A3 M/N PHASE DETECTOR (400 MHZ)

2848C

85660-6008:

A7A3Wl

8566&6008.

7

1

CABLE ASSEMBLY, COAX 92 A7A4A2 M/N OUTPUT
TO A7A3 M/N PHASE DETECTOR (355-395 MHZ)

2848C

85660-6008:

A7A3W2

85660-6008.

9

1

CABLE ASSEMBLY, COAX 89 A7Al REFERENCE
PHASE DETECTOR TO A7A3 M/N PHASE
DETECTOR (20 MHZ)

2848C

85660- 6008

8566CL60111

9

1

CABLE ASSEMBLY, COAX 9 A7A4AlA2 M/N VCO TO
A7A4A2 M/N OUTPUT (355-395 MHZ)

28480 85660-60118

A7A4A2Wl

5566CL6010:

2

1

CABLE ASSEMBLY, 3 WIRE HARNESS, A7A4A2 M/N
OUTPUT TO A7A4AlA2 M/N VCO

28480

85660-60103

AlOAlWl

35660-6008:

3

1

CABLE ASSEMBLY, COAX 1 AlOA5 PLL2 VCO TO
AlOAl PLLl VCO (15-30 MHZ)

28480

55660-60089

AlOA2Wl

35660-6009(

6

1

CABLE ASSEMBLY, COAX 3 AlOA3 PLLl IF TO AlOA2
PLLl DIVIDER (36-139.7 MHZ)

28480

35660-60090

410A3Wl

35660-6009:

8

1

CABLE ASSEMBLY, COAX 6 AlOA4 PLL3 UP
CONVERTER TO AlOA3 PLLl IF (160.15-166 MHZ)

28480

35660-60092

410A3W2

35660-60091

7

1

:ABLE ASSEMBLY, COAX 4 AlOAl PLLl VCO TO
410A3 PLL3 IF (199-300 MHZ)

28480

35660-60091

410A4Wl

3566CL6009:

9

1

>ABLE ASSEMBLY, COAX 7 AlOA5 PLL2 VCO TO
410A4 PLL3 UP CONVERTER (0.15-6 MHZ)

28480

35660-60093

210ASWl

35660-60088

2

1

?ABLE ASSEMBLY, COAX 83 AlOA8 PLL2
IISCRIMINATOR TO AlOA5 PLL2 VCO (VCO TUNE)

28480

35660-60088

ilOA7Wl

$5660-60087

1

1

:ABLE ASSEMBLY, COAX 96 AlOA5 PLL2 VCO TO
ilOA7 PLL2 DIVIDER (75-150 MHZ)

28480

35660-60087

ilOA8Wl

15660-60086

0

1

:ABLE ASSEMBLY, COAX 97 AlOA5 PLL2 VCO TO
tlOA8 PLL2 DISCRIMINATOR (0.x-0.3 MHZ)

28480

S5660-60086

ilOA8W2

1566@60071

3

1

:ABLE ASSEMBLY, COAX 2 Al6 SCAN GENERATOR
l’0 AlOA8 PLL2 DISCRIMINATOR (SCAN OUT)

18480

)5660-60071

lllW1

1566G20086

6

1

:ABLE ASSEMBLY, COAX AllA YTO TO AllAl CIA
2.3-6.1 GHZ)

18480

15660-20086

AllW4

35660-60081

5

1

CABLE ASSEMBLY, COAX 0 AllJ5 TO AllJ4 (YTO IF
OUT) (15-30 MHZ)

28480

35660-60081

411A2Wl

3120-2801

7

1

CABLE ASSEMBLY, 14 WIRERIBBON AllA
[NTERCONNECT TO AllA YTO

28480

3120-2801

411A2W2

3120-2803

9

1

:ABLE ASSEMBLY, 20 WIRE-RIBBON AllA
[NTERCONNECT TO/FROM A23J2

28480

3120-2803

911A2W3

35660-6OlOE

7

1

:ABLE ASSEMBLY, BIAS 92 AllA INTERCONNECT
TO AllAl CIA (+5.2V PIN)

28480

35660-60108

211A2W4

15660-6010:

8

1

>ABLE ASSEMBLY, BIAS 96 AllA INTERCONNECT
TO AllAl CIA (CIA GATE BIAS PIN)

28480

35660-60109

i12Wl-4

)757-0346

2

1

28480

1757-0346

-

-

tESISTOR 10 OHM 1% (JUMPERS FOR 85660A/B
:OMPATIBILITY)

General Parts Listing 25

RF Section Cables (continued)
Reference
Designator

HP Part
Number

CD Qty

Description

I

I I
Mfr
Code

Mfr Part
Number

A16Wl

1460-1489

8

1

WIREFORM (JUMPER FOR SCAN OUT)

28480

1460-1489

A22Wl

5062-1922

4

1

CABLE ASSEMBLY, HARNESS A23 MOTHERBOARD
TO A22AllO MHZ FREQUENCY STANDARD

28480

5062-1922

A23Wl

85660-60070

2

1

CABLE ASSEMBLY, COAX 3 Al6 SCAN GENERATOR
TO A23 MOTHERBOARD FOR A19 DAC (SCAN OUT)

28480 85660-60070

A23W2

85660-60068

8

1

CABLE ASSEMBLY, COAX 84 A23 MOTHERBOARD
(FROM A19 DAC) TO A6A12 YTX DRIVER (YTX
TUNE)

28480 85660-60068

A23W3

85660-60069

9

CABLE ASSEMBLY, COAX 8 AllJl YTO LOOP TO
A23 MOTHERBOARD FOR A21 FM COIL DRIVER
(PHASE DET OUT)

28480

A23W4

85660-60124

7

CABLE ASSEMBLY, COAX 7 A21 FM COIL DRIVER
TO AllA YTO (FM COIL INPUT)

28480 85660-60124

A23W5

8120-2800

6

CABLE ASSEMBLY, 16 WIRERIBBON
MOTHERBOARD TO A5Al KEYBOARD A23

28480 8120-2800

A23W6

8120-2804

0

CABLE ASSEMBLY, 26 WIRERIBBON A23
MOTHERBOARD TO A6A13 RF MOTHERBOARD

28480 8120-2804

A23W7

8120-2802

8

A25Wl

5061-5481

6

28480
CABLE ASSEMBLY, 24 WIRE-RIBBON A15
CONTROLLER TO A25 REAR PANEL 57 (HP-IB REAR
PANEL OUTPUT)

5061-5481

A25W2

5062-1920

2

CABLE ASSEMBLY, 50 WIRERIBBON A15
CONTROLLER TO A25 REAR PANEL J6
(INSTRUMENT BUS REAR PANEL OUTPUT)

28480

5062-1920

26 General Parts Listing

CABLE ASSEMBLY, 50 WIRE-RIBBON A23
MOTHERBOARD TO A5Al KEYBOARD/AGAlS RF
MOTHERBOARD

85660-60069

28480 8120-2802

RF Section Miscellaneous Parts
nescrintion
TERMINATION-COAX
OUTPUT)

Mfr

“F” Pn.4

SMA (TERMINATES 1ST LO

ATTENUATOR, 3DB (SERIAL NUMBER PREFIXES:
2532A AND ABOVE)
FAN (SEE A24)
FILTER CAPACITOR (SEE A23Cl)
FILTER CAPACITOR (SEE A23C2)
FILTER CAPACITOR (SEE A23C3)
FILTER CAPACITOR (SEE A23C4)
FUSE 4A 250V FAST-BLO 1.25X.25 UL IEC (FOR
100/120 VOLT OPERATION)
FUSE 2A 250V SLO-BLO 1.25X.25 UL (FOR 220/240
VOLT OPERATION)
LINE MODULE (SEE A9)
CONNECTOR S-PIN (IF/SWEEP)
PART OF W6
PART OF W12
PART OF W3
PART OF W16
PART OF A25W2
PART OF A25Wl
FAN RELAY (SEE A23Kl)
SWITCH-SL DPDT-NS MINTR .5A 125VAC/DC (FREQ
REFERENCE INT/EXT)
TRANSFORMER, POWER, AC LINE
TRANSFORMER, POWER, AC LINE (OBSOLETE)
ORDER HP PART NUMBER 9100-4068 FOR
REPLACEMENT.)
INFORMATION CARD, ENGLISH (MANUAL
OPERATION)
INFORMATION CARD, ENGLISH (REMOTE
OPERATION)

General Parts Listing 27

This page intentionally left blank.

28 General Parts Listing

Item
1

HP Part
Number

CD

Description

Mfr
Code

Mfr Part
Number

85660-20356

3

FRAME, FRONT, RF SECTION *

28480 85660-20356

85660-20084

4

FRAME, FRONT, RF SECTION **

28480 85660-20084

5021-8699

0

BEZEL, FRONT *

28480 5021-8699

8568620125

8

BEZEL, FRONT **

28480 85680-20125

8566&00113

8

PANEL, DRESS, UPPER FRONT, RF SECTION

28480 85660-00113

4

5041-8801

8

FOOT, BOTTOM

28480 5041-8801

5

8566@00112

7

PANEL, FRONT DRESS, LOWER, RF SECTION

28480 58660-00112

6

0370-3069

2

KNOB, ROUND, RPG, DATA CONTROL

28480 0370-3069

7

5062-3989

7

FRONT HANDLES (INCLUDES TRIM), PAIR *

28480 5062-3989

5061-0089

0

FRONT HANDLES (INCLUDES TRIM), PAIR **

28480 5061-0689

2
3

* Serial Numbers 2516A03432 and above.
** Serial Numbers 2410AOOlOl to 2503A03431.

Figure 1. Instrument Parts Identification, Front View

General Parts Listing 29

PLACES)

‘ED)

30 General Parts Listing

Iten
1

2

s

HP Part
Number

CI

Description

Mfr
Code

Mfr Part
Number

5021-8540

0

LOCK FOOT, LOWER RIGHT

28480 5021-8540

0515-1244

9

SCREW, METRIC 3.5 X 12 PAN HD *

28480 0515-1244

2360-0121

2

SCREW, 632, .500-IN-LG PAN HD **

28480

0515-1232

5

SCREW, METRIC 3.5 X 8 PAN HD

28480 0515-1232

2360-0119

8

SCREW, 6-32, .438-IN LG, PAN HD

28480 2360-0119

5041-8821

2

FOOT, REAR

28480 5041-8821

5041-8801

8

FOOT, BOTTOM

28480 5041-8801

2360-0121

55660-60225

9

SUPPORT, PC BOARD, REAR

28480 85660-60225

3566CkOO118

3

AIR FILTER, GRILL

28480 85660-00118

2190-0007

2

WASHER LOCK, .141 ID X 6

2848C

2360-0197

2

SCREW, 632 .375-IN-LG PAN HD

2848C 2360-0197

0515-1245

0

SCREW, COVER MOUNTING, 632, .460-IN LG *

28480 0515-1245

2190-0007

2360-0196

1

SCREW, COVER MOUNTING, 6-32, .460-IN LG **

28480

3

0510-0952

4

RETAINER RING FOR SCREW (8)

28480 0510-0952

LO

5062-3747

5

COVER, 18-IN (FOR BOTTOM WITH FEET) *

28480 5062-3747

5060-9847

4

COVER, 18-IN (FOR BOTTOM WITH FEET) **

28480 5060-9847

2360-0196

11

1251-2942

7

SCREW, 4-40 (INCLUDES NUT AND WASHER)

28480 1251-2942

12

2360-0115

4

SCREW, MACH, 6-32, .312-W LG, PAN HD

28480 2360-0115

13

55660-00011

7

PANEL, REAR, RF SECTION

28480 85660-00011

L4

5566@20061

7

HEAT SINK, TRANSISTOR

28480 85660-20061

15

5021-8538

6

LOCK FOOT, LOWER LEFT

28480 5021-8538

1515-1244

9

SCREW, METRIC 3.5 X 12 PAN HD *

28480 0515-1244

2360-0121

2

SCREW, 632, .500-IN-LG PAN HD **

28480 2360-0121

35660-00114

9

FAN, HOUSING GRILL (SERIAL NUMBERS:
2747AO5729 AND ABOVE)

28480 85660-00114

d5660-60357

8

FAN HOUSING REPLACEMENT KIT (SERIAL
NUMBERS: 2410AOOlOl-2747A05728)

28480 85660-60357

6

17

85660-00045

9

AIR FILTER

28480 85660-00049

18

9135-0392

9

LINE MODULE WINDOW

28480 9135-0392

19

5021-3292

9

STANDOFF, BUS CABLE

28480 5021-3292

10

5001-8748

8

LOCKING PLATE (INSIDE REAR SUPPORT)

28480 5001-8748

11

0 STANDOFF, HP-IB CABLE
1251-7002
’ Serial Numbers 2516A03432 and above.
‘* Serial Numbers 2410AOOlOl to 2503A03431.

28480 1251-7002

Figure 2. RF Section Parts Identification

General Parts Listing 31

Item
1

HP Part
Number
5041-8821

Description

CD
2

Mfr
Code

FOOT, REAR

28480

Mfr Part
Number
5041-8821

0515-1132

4

SCREW,METRIC,5.0XlO,FLAT

HD *

28480 0515-1132

2680-0172

1

SCREW, 10-32, .375 IN LG, FLAT HD **

28480 2680-0172

3

5062-3735

1

COVER, 18-W (TOP AND BOTTOM W/O FEET) *

28480 5062-3735

5060-9835

0

COVER, 18-IN (TOP AND BOTTOM W/O FEET) **

28480 5060-9835

4

5062-3704

4

STRAP HANDLE ASSEMBLY, 18-IN

28480 5062-3704

5

5062-3837

4

COVER, 18-W, SIDE, PERFORATED *

28480 5062-3837

5060-9937

3

COVER, 18-IN, SIDE, PERFORATED **

28480 5060-9937

5041-8819

8

COVER, STRAP HANDLE, FRONT *

28480 5041-8819

5040-7219

8

COVER, STRAP HANDLE, FRONT **

28480 5040-7219

7

5062-3989

7

TRIM STRIP, (PART OF FRONT HANDLES KIT)

28480 5062-3989

8

85660-20355

2

FRAME, FRONT, RF SECTION *

28480 85660-20355

8566G20084

4

FRAME, FRONT, RF SECTION **

28480 85660-20084

9

5041-8801

8

FOOT, BOTTOM

28480 5041-8801

10

5062-3747

5

COVER, 18-IN (FOR BOTTOM WITH FEET) *

28480

5060-9847

4

COVER, 18-IN (FOR BOTTOM WITH FEET) **

28480 5060-9847

5041-8820

1

COVER, STRAP HANDLE, REAR *

28480 5041-8820

2

6

11

5062-3747

5040-7220

1

COVER, STRAP HANDLE, REAR **

28480

12

5002-0659

6

HOUSING, SIDE, FAN

28480 5002-0659

5040-7220

13

5021-8540

2

LOCK FOOT, LOWER RIGHT

28480 5021-8540

14

2200-0770

9

SCREW, MACH, 4-40, .188-IN LG, 100 DEG FH

28480 2200-0770

* Serial Numbers 2516AO3432 and above.
** SerialNumbers 2410AOOlOlto 2503A03431.

Figure 4. RF Section Parts Identification, Left Side View

General Parts Listing 33

2
5
(8 PLACES)

(2

PLACES) @ Q

?

7 (2 PLACES)
D

( 2

1 w---/@ ( 2
;uI

PLACiS)

P L A C E S )

(2 PLACES) w

-%i

(2

PLACES)

(6 PLACES)
(2 PLACES) wm

(2 PLACES)
(37 PLACES)

( 2

(2 PLACES)
PEES)

Figure 5. RF Section Parts Identification, Bottom View (1 of 3)

34 General Parts Listing

Item

HP Part
Number

CD

1

2360-0115

4

SCREW, MACH, 632, .312-W LG, PAN HD

28480 2360-0115

2

8566G20233

5

FRAME, REAR, RF SECTION *

28480 85660-2023

8566C20085

5

FRAME, REAR, RF SECTION **

28480 85660-2008

3

85660-00075

1

COVER, PLASTIC, REGULATOR

28480 85660-0007

4

86701-00028

6

SPRING, FLAT (FOR COVER (3))

28480 86701-0002,

5

8566&00115

0

FAN HOUSING BOTTOM (SERIAL NUMBERS:
2747AO5729 AND ABOVE)

28480 85660-0011.

Description

Mfr
Code

8566@60357 8 FAN HOUSING REPLACEMENT KIT (SERIAL
NUMBERS: 2410AOOOOl-2747A05728)

Mfr Part
Number

28480 85660-6035'

6

86701-20005

1

GUIDE, PC BOARD, REGULATOR

28480 86701-2000:

7

0515-1331

5

SCREW, METRIC 4 X 6 SPCL FLAT HD *

28480 0515-1331

2510-0195

9

SCREW, 8-32, .375-IN-LG, 100 DEG, FLAT HD **

28480 2510-0195

3

85660-00074

0

COVER, CONTROLLER

28480 85660-0007.

3

5021-5837

2

STRUT, CORNER, 18-IN *

28480 5021-5837

85660-20099

1

STRUT, CORNER, 18IN **

28480 85660-2009:

LO

86701-20006

2

GUIDE, PC BOARD, REGULATOR

28480 86701-2OOOf

11

2360-0331

6

SCREW, MACH, 632, .25-IN LG, PAN HD

28480 2360-0331

12

2200-0103

2

SCREW, MACH, 4-40, .35-IN LG, PAN HD

28480 2200-0103

13

8566CL20100

5

EXTRACTOR, PC BOARD

28480 85660-2OlOC

14

2360-0111

0

SCREW, MACH, 632, .188-W LG, PAN HD

28480 2360-0111

15

85660-00025

1

MOUNT, SUPPORT BRACKET ISOLATION (FOR A22)

28480 85660-0002:

16

8566@00002

4

DIVIDER, PROCESSOR

28480 85660-0000:

17

8566CLOOO26

2

SHOCK MOUNT SUPPORT BRACKET, BOTTOM
(FOR A22)

28480 85660-0002t

L8

2200-0103

2

SCREW, MACH, 4-40, .25-IN LG, PAN HD

28480 2200-0103

19

2360-0333

8

SCREW, MACH, 632, .25-IN LG, 100 DEG FH

28480

2360-0333

!O

1520-0205

2

SHOCK MOUNT (FOR A22)

28480

1520-0205

!l

0515-0917

1

SCREW, METRIC 3.5 X 10 PAN HD

28480 0515-0917

!2

2200-0105

4

SCREW, MACH, 4-40, .312-IN LG, 82 DEG FH

28480 2200-0105

!3

0515-1331

5

SCREW, METRIC 4 X 6 SPCL FLAT HD *

28480 0515-1331

2510-0192

6

SCREW, 8-32, .25-IN-LG, 100 DEG, FLAT HD **

28480 2510-0192

!4

2360-0116

5

SCREW, MACH, 632, .312-W LG, 82 DEG FH

28480 2360-0116

!5

85660-20355

2

FRAME, FRONT, RF SECTION *

28480 85660-20355

8566CL20084

2

FRAME, FRONT, RF SECTION **

28480 85660-20084

’ Serial Numbers 2516A03432 and above.
‘* Serial Numbers 2410AOOlOl to 2503A03431.

Figure 5. RF Section Parts Identification, Bottom View (2 of 3)

General Parts Listing 35

Iten

HP Part
Number

:I:

Description

Mfr
Code

MD Part
Number

26

2360-0117

6

SCREW, MACH, 632, .375-IN LG, PAN HD

28480

27

3050-1260

6

WASHER, FLAT, NO. 6, .149-IN (FOR SCREW (26))

28480 3050-1260

2360-0117

28

8566CLOOOO

3

DIVIDER, CENTER

28480 85660-0000:

29

2360-0116

5

SCREW, MACH, 632, .312-IN LG, 82 DEG FH

28480 2360-0116

30

1400-0053

4

CLAMP, CABLE, NYLON, .172-IN DIA, .375-IN WIDE

28480

31

D520-0137

3

SCREW, MACH, 2-56, .75-IN LG, PAN HD

28480 0520-0137

32

2190-0890

1

WASHER, LOCK, HLCL, NO .2 (FOR SCREW (31))

28480 2190-0890

33

2200-0145

2

SCREW, MACH, 4-40, .438-IN LG, PAN HD

28480 2200-0145

34

2190-0003

8

WASHER, LOCK, HLCL, NO. 4 (FOR SCREW (33))

28480 2190-0003

35

3050-0105

6

WASHER, FLAT, NO. 4 (FOR SCREW (33))

28480 3050-0105

36

3566CLOOO21

7

COVER, MICROCIRCUIT MOUNT

28480 85660-00021

37

3566CLOOOl:

9

MAIN BRACKET, RF MODULE

28480 85660-0001:

38

2200-0105

4

SCREW, MACH, 4-48 .312-IN-LG PAN HD

28480

39

35660-0007:

9

COVER, PC BOARD, RF MODULE

28480 85660~00072

10

140~0009

9

GROMMET, ROUND, .125IN ID, .25-IN OD

18480 0400-0009

11

35660-00091

1

CHASSIS, RF MODULE *

18480 85660-00091

~5660-00005

9

CHASSIS, RF MODULE **

18480 85660-00007

12

1400-0219

3

GROMMET, ROUND, .5-IN ID, .093-IN WIDE

18480 0400-0219

13

!200-0105

4

SCREW, MACH, 4-40, .312-IN LG, PAN HD

38480 2200-0105

14

55660-601OC

9

SCREW, MACH, 4-40, .312-IN LG, PAN HD (INCLUDES
WASHER)

18480 85660-60100

L5

1566620232

STRUT, CORNER, 18-IN *

!8480

iO20-8837

STRUT, CORNER, 18-IN **

,848O 5020-8837

1400-0053

2200-0105

95660-20232

46

2360-0197

SCREW, MACH, 632, .375-IN LG, PAN HD

28480 2360-0197

47

2190-0096

WASHER, LOCK, HLCL, NO. 6 (FOR SCREW (46))

28480 2190-0006

48

3050-0227

WASHER, FLAT, NO. 6 (FOR SCREW (46))

28480 3050-0227

49

2420-0002

NUT, HEX, 632 THREAD (FOR SCREW (46))

28480 2420-0002

50

35660-0001:

SUPPORT, PC BOARD, RECTIFIER

28480 85660-0001:

51

36701-OOOlf

SUPPORT, CAPACITOR

28480 86701-0001~

52

35660-0011~

FAN, HOUSING GRILL (SERIAL NUMBERS:
2747A05729 AND ABOVE)

28480 85660-00114

FAN HOUSING REPLACEMENT KIT (SERIAL
NUMBERS: 2410AOOC91-2747A05728)

28480 85660-60357

3566Cb6035;

8

35660-00004 6
PROCESSOR PIVOT BRACKET
* Serial Numbers 2516A03432 and above.
53

18480 85660-00004

Figure 5. RF Section Parts Identification, Bottom View (3 of 3)

36 General Parts Listing

This page intentionally left blank

General Parts Listing 37

( 2

PI

A23J8
( 1 1 P L A C E S ) @,
“ill,@ ( 4 P L A C E S )

!!&yj-j;im ( 6 P L A C E S )
24
0’

(2 PL

(8 PLACES (4 PLACES)
(2 PLACES)

Figure 6. RF Section Parts Identification, Top View (1 of 2)

38 General Parts Listing

Item

HP Part
Number

CD

Description
4
METRIC

Mfr
Code

6 X FLAT
SPCL HD *

Mfr Part
Number

0515-1331

5

SCREW,

2510-0195

9

SCREW,

8-32

2

2680-0129

8

SCREW,

MACH,10-21,
.312-IN PAN
LG,

3

2190-0011

8

28480 2190-0011

28480 3050-0105

1

.375-IN-LG,

28480 0515-1331

100 FLAT
DEG
HD **

28480 2510-0195
28480

HD

2680-0129

4

2200-0155

4

WASHER, LOCK, INTERNAL TOOTH (FOR SCREW
(2))
1.0 PAN HD
SCREW,
MACH.440 IN LG

5

3050-0105

6

WASHER, FLAT NO. 4 (FOR SCREW (4))

6

2360-0197

2

SCREW,

7

2190-0006

1

WASHER,

s

3050-0227

3

WASHER, FLAT, NO. 6 (FOR SCREW (6)

28480 3050-0227

3

2420-0002

6

NUT,

28480 2420-0002

MACH,632,.375-IN PAN
LG
LOCK,

HEX,

632

HLCL, 6 NO.

28480 2200-0155
28480 2360-0197

HD
(FOR
(6))
SCREW

28480 2190-0006

THREAD SCREW
(FOR (6))

8566@20231

3

STRUT, CORNER, 18-1N *

28480 85660-2023

8566@20098

0

STRUT, CORNER, 18-1N **

28480 85660-20091

11

2360-0115

4

SCREW,

28480

12

2200-0105

4

SCREW, MACH, 4-40, .312-IN LG, PAN HD

28480 2200-0015

13

2360-0017

5

SCREW, MACH, 6-32, .375-W LG, PAN HD

28480 2360-0017

14

0515-1331

5

SCREW, METRIC 4 X 6 SPCL FLAT HD *

28480 0515-1331

2510-0192

6

SCREW, 8-32, .25-IN-LG 100 DEG FLAT HD **

28480 2510-0192

0515-0907

9

SCREW, METRIC 3.0 X 8 FLAT HD *

28480 0515-0907

2360-0116

5

SCREW, 6-32 .312-IN-LG, 82 DEG FLAT HD **

28480 2360-0116

16

8566C-00019

3

MOUNT, ATTENUATOR

28480 85660-0001

17

5020-0137

3

SCREW, MACH, 2-56, .75-IN LG, PAN HD

28480 5020-0137

18

2190-0680

7

WASHER, LOCK, HLCL, NO. 2 (FOR SCREW (17))

28480 2190-0680

19

8566&20072

0

MOUNT, MICROCIRCUIT

28480 85660-2007

20

2360-0119

8

SCREW, MACH, 632, .438-IN LG, PAN HD

28480

21

8566GOOO33

1

INSULATOR, PC BOARD, PLASTIC

28480 85660-0003:

22

1600-0367

7

METAL LOCK LINK, STAINLESS STEEL

28480

23

0515-0887

4

SCREW, METRIC 3.5 X 6 PAN HD *

28480 0515-0887

2360-0330

5

SCREW, 632, .188-IN-LG, PAN HD **

28480 2360-0330

5021-5837

2

STRUT, CORNER, 18-IN *

28480 5021-5837

5020-8837

6

STRUT, CORNER, 18-1N **

28480 5020-8837

2200-0139

4

SCREW, 4-40 .25 IN-LG PAN HD

28480

16

2360-0115

4

SCREW, MACH, 632, .312-IN LG, PAN HD

28480 2360-0115

17

8566CkOO116

1

FAN HOUSING TOP (SERIAL NUMBERS: 2747A05729
AND ABOVE)

28480 85660-OOllt

8566&60357

8

FAN HOUSING REPLACEMENT KIT (SERIAL
NUMBERS: 2410A00001-2747A05728)

28480 85660-6035:

!8

2360-0268

8

LUG, TERMINAL, GROUND

28480 2360-0268

19

1400-0907

7

CLAMP, WIRE

05683 3/16HFR

!O

2190-0003

8

WASHER, LOCK, HLCL, NO. 4 (FOR SCREW (4))

28480 2190-0003

LO

15

24
25

MACH. 632.312IN-LG PAN HD

2360-0115

2360-0119
1600-0367

2200-0139

' SerialNumbers 2516A03432 andabove.
‘* Serial Numbers 2410AOOlOl to 2503A03431.

Figure 6. RF Section Parts Identification, Top View (2 of 2)

General Parts Listing 39

Item HP Part CD
Number

Description

Mfr Mfr Par
Code Number

1

5041-0706

6

KEY, Czj

28480 5041-07Of

2

5041-0712

4

KEY, k-j

28480 5041-0711

3

5041-0938

6

KEY, CPEAK SEARCH)

28480

4

5041-0716

8

KEY, @

28480 5041-0716

5

5041-0692

9

KEY, loFF)

28480 5041-0692

6

5041-0717

9

KEY, m

28480 5041-0717

7

5041-0698

5

KEY, (j-1

28480 5041-0698

8

0370-3069

2

KNOB, ROUND, RPG, DATA CONTROL

28480 0370-3069

9

5041-0725

9

KEY, [jj

28480 5041-0725

10

5041-0673

6

KEY, [CENTER FREQUENCY)

28480 5041-0673

11

5041-0674

7

KEY, @RE$UENCy SPAN]

28480 5041-0674

12

5041-0751

1

KEY, @

28480 5041-0751

13

5041-0748

6

KEY, @

28480 5041-0748

14

5041-0752

2

KEY, @

28480 5041-0752

15

5041-0749

7

KEY, @

28480 5041-0749

16

5041-0753

3

KEY, @

28480 5041-0753

17

5041-0727

1

KEY, [GHz +dBm dB]

28480 5041-0727

5041-0931

Figure 7. RF Section Parts Identification, Front Panel, Front View (1 of 2)

40 General Parts Listing

Item

HP Part
Number

CD

Description

18

5041-0750

0

KEY,@

28480

19

5041-0728

2

KEY, MHz -dBm set

28480 5041-0728

20

5041-0729

3

KEY, kHz mV msec

28480 5041-0729

21

5041-0828

3

KEY, @

28480 5041-0828

22

5041-0730

6

KEY, [Hz]

28480 5041-0730

23

5041-0757

7

KEY, (BACK SPACE_)

28480 5041-0757

14

5041-0827

2

KEY, @

28480 5041-0827

25

5041-0755

5

KEY, 0

28480 5041-0755

26

5041-0826

1

KEY,@

28480 5041-0826

27

5041-0754

4

KEY,@

28480 5041-0754

28

5041-0669

0

KEY, (STOP FREQ)

28480 5041-0669

29

5041-0675

8

KEY, (REFERENCELEVEL)

28480 5041-0675

30

5041-0668

9

KEY,[sTARTFREQJ

28480

31

5041-0756

6

KEY,@0

28480 5041-0756

32

85660-00112

7

PANEL,DRESS,LOWERFRONT

28480 85660-00112

33

5041-0937

5

KEY,@IGNALTRAcK_)

28480 5041-0937

34

5041-0917

i

KEY, [PRESELPEAKJ

28480 5041-0917

35

5041-0715

7

KEY,[MKR-+REF LVL_)

28480 5041-0715

36

5041-0714

6

KEY, MKR/A+

28480 5041-0714

37

5041-0724

8

KEY,[w)

28480 5041-0724

38

5041-0711

3

KEY, &F STEP SIZE_)

28480 5041-0711

39

5041-0723

7

KEY, (O-2.5)

28480

40

5041-0710

2

KEY, cm-

28480 5041-0710

41

5041-0775

9

KEY, Cm)

28480 5041-0775

42

5041-0709

9

KEY,@wmP TIME_)

28480 5041-0709

43

5041-0095

6

KEY,-

28480 5041-0095

44

5041-0726

0

KEY,(LCL)

28480 5041-0726

15

5041-0708

8

KEY, C-1

28480 5041-0708

16

5041-0707

7

KEY, cm-

28480 5041-0707

17

0624-0264

2

SCREW,4-40,.312-IN-LG FLAT HD

28480 0624-0264

18

8568GOOOll

9

PANEL,SUB,UPPERFRONT,RFSECTION

28480 85680-00011

85660-00113

8

PANEL,DRESS,UPPER FRONT (COVERS (48))

28480 85660-00113

STPSIZE

Mfr
Code

Mfr Part
Number
5041-0750

5041-0668

5041-0723

Figure 7. RF Section Parts Identification, Front Panel, Front View (2 of 2)

General Parts Listing 41

A5Al
KEYBOARD

(14 PLACES)

01

A5A2
(RPG)

ASAlP

A5AlJl

A5DS 1
STANDBY)

(3 PLACES)

Description

CD

Mfr
Code

Mfr Part
Number

Item

HP Part
Number

1

2200-0103

2

SCREW, MACH, 4-40, .24-1N LG, PAN HD

28480

2

85680-40004

4

MOUNT, LED (FOR INSTR CHECK LEDS)

28480 85680-40004

3

8566&00056

8

PANEL, SUB, LOWER FRONT

28480

4

0510-1148

2

RETAINER, PUSH-ON (TO ATTACH DRESS PANELS)

28480 0510-1148

5

5021-8699

0

BEZEL, FRONT, RF SECTION *

28480

8568@20125

8

BEZEL, FRONT, RF SECTION **

28480 85680-20125

* Serial Numbers 2516A03432 and above.
** Serial Numbers 2410AOOlOl to 2503A03431.

Figure 8. RF Section Parts Identification, Front Panel

42 General Parts Listing

2200-0103

85660-00056

5021-8699

Item

HP Part
Number

CD

A6J3

8629&60005

7

CONNECTOR ASSEMBLY (TYPE N)

28480 86290-60005

1

1250-1577

0

BODY: RF CONNECTOR (TYPE N)

02660

131-150

2

1250-0915

8

CONTACT: RF CONNECTOR (TYPE N)

02660

131-149

3

5040-0306

0

INSULATOR

28480 5040-0306

4

0855520093

5

CENTER CONDUCTOR

28480 08555-20093

5

08555-20094

6

BODY: BULKHEAD

28480 08555-20094

6

08761-2027

4

INSULATOR

28480 08761-2027

7

2190-0104

0

WASHER: LOCK 0.439-IN ID

28480 2190-0104

8

2950-0132

6

NUT: HEX 7/16-28

28480 2950-0132

Description

Mfr
Code

Mfr Part
Number

Figure 9. RF Input Connector, Parts Identification

General Parts Listing 43

Major Assembly and Component Locations
Major Assembly and Component Locations
Assembly

Location

ACLU
Controller
Coupler/Isolator/Amplifier (CIA)

A6A5
Al5
AllAl

Digital Analog Converter (DAC)

A19

FM Coil Driver
Fan
First Converter
Front Panel
Front Panel Interface
Interconnect
Keyboard

A21
A24
A6A6
A5
Al2
AllA
A5Al

Last Converter
Line Module
M/N Output

A6A3
A9
h7A4

M/N Phase Detector

Assembly

Location

Phase Lock Loop 2 Discriminator
Phase Lock Loop 2 Divider

AlOA8
AlOA7

Phase Lock Loop 2 Phase Detector
Phase Lock Loop 2 VCO
Phase Lock Loop 3 Up Converter
Positive Regulator
RF Module
RF Module Motherboard
Rotary Pulse Generator (RPG)

AlOA6
AlOA5
AlOA4
Al7
A6
A6A13
A5A2

h7A3

Rectifier
Reference Phase Detector
Sampler
Scan Generator
Second Converter
Slope Generator

A8
A7Al
AllA
Al6
A6A4
A6All

M/N Reference

A7

STANDBY/ON Switch

A5Sl

M/N Reference Motherboard

A7A5

YIG-TUNED MIXER (YTX)

A6A8

Main Coil Driver
Miscellaneous Bias/Relay Driver

420
46AlO
423
418
46A9
410A2
410A3

YTO Loop
YTO Phase Detector
YTX Current Driver
YTX Driver
6.2 GHz Low-Pass Filter
10 MHz Frequency Standard
20130 Synthesizer

All
AllA
A6A7
A6A12
AllA
A22

4lOAl

100 MHz VCXO

A7A2

Motherboard
Negative Regulator
Phase Lock
Phase Lock Loop 1 Divider
Phase Lock Loop 1 IF
Phase Lock Loop 1 VCO

A10

Major Assembly and Component Locations

1

A24

A23C4

A23C2
/ (-4OV)
,

A23Cl
(-1ov

A 23W5

A23
‘MOTHERBOARD

.

A23W6

\ A6A13

RF MODULE
MOTHERBOARD

A23W7

AiA6
FIRST CONVERTER

Figure 1. Major Assembly and Component Locations, Bottom View

2

Major Assembly and Component Locations

A24

Al7
THROUGH
A21
10 MHz
FREQUENCY
STANDARD

A23C2 A23C3 A23C4
(-4OV) (+ZOv) (+5v)
A23C 1
(-IOV)

\
Al 1

RECTlFlEd

M/N-REFEREN;;

TRANSFORM:;

R F MOD”;:

A6J5

A6J4

A6J2

I N’:“T 0”t;“T ;uSfP:? C A L
A6Rl
AMPTD CAL

A%PUT

A5A2
RPG

A23W7

A23W5
/

A6J3
RF INPUT

A5A 1
KEYBOARD

\ ASSWI
STANDBY/ON

Figure 2. Major Assembly and Component Locations, Top and Front Views

Major Assembly and Component Locations 3

Al8 A19 A20 A21

A7A2

A7A3

A7A4

.i,!j&!-,~li A l 6
,A12

A7A 1

A22

Al IA2

A6A12

Al 1
A l 1Al

A6All

Al IA7

A6AlO

A10A8
A6A9

AlOA7
AlOA6

A6A3

A6A4

A6A7

AlOAl

AlOA2

AlOA3

Figure 3. Major Assemby and Component Locations, Top View

4

Major Assembly and Component Locations

Table 1-2. Hewlett-Packard Sales and Service Offices
US FIELD OPERATIONS
HEADQUARTERS

EUROPEAN OPERATION
HEADQUARTERS

INTERCON OPERATIONS
HEADQUARTERS

Kewlett-Packard Company
19320 Pruneridge Avenue
ICupertino, CA 95014, USA
I(408) 973-1919

Hewlett-Packard S.A.
150, Route du Nant-d’Avri1
1217 Meyrin 2/Geneva
Switzerland
(41 22) 780.8111

Hewlett-Packard Company
3495 Deer Creek Rd.
Palo Alto, California 94304-1316
(415) 857-5027

,California

Australia

France
Hewlett-Packard Co.
1421 South Manhattan Ave. Hewlett-Packard France
1 Avenue Du Canada
Fullerton, CA 92631
Zone D’Activite De Courtaboeuf
I(714) 999-6700
F-91947 Les Ulis Cedex
France
1Hewlett-Packard Co.
(33 1) 69 82 60 60
301 E. Evelyn
1Mountain View, CA 94041
Germany
(:415) 694-2000
Hewlett-Packard GmbH
tColorado
Berner Strasse 117
6000 Frankfurt 56
1Hewlett-Packard Co.
West Germany
24 Inverness Place, East
(49 69) 500006-O
1Englewood, CO 80112
(:303) 649-5000

Hewlett-Packard Australia Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130
(61 3) 895-2895

Canada
Hewlett-Packard (Canada) Ltd.
17500 South Service Road
Trans-Canada Highway
Kirkland, Quebec H9J 2X8
Canada
(514) 697-4232

Japan

Yokogawa-Hewlett-Packard Ltd.
1-27-15 Yabe, Sagamihara
Hewlett-Packard Ltd.
Eskdale Road, Winnersh Triangle Kanagawa 229, Japan
Wokingham, Berkshire RGll 5DZ (81 427) 59-1311
England

Great Britain

tGeorgia
1Hewlett-Packard Co.
:1000 South Park Place
14tlanta, GA 30339
(:404) 955- 1500
1UliIlOiS
1Hewlett-Packard Co.
tj201 Tollview Drive
Rolling Meadows, IL 60008
:708)
255-9800
1
1Yew Jersey
1Hewlett-Packard Co.
1120 W. Century Road
Paramus, NJ 07653
11201) 599-5000
Irexas
IHewlett-Packard Co.
!)30 E. Campbell Rd.
Richardson, TX 75081
11214) 231-6101

(44 734) 696622

People’s Republic
of China
China Hewlett-Packard, Ltd.
38 Bei San Huan Xl Road
Shuang Yu Shu
Hai Dian District
Beijing, China
(86 1) 256-6888

Singapore
Hewlett-Packard Singapore
Pte. Ltd.
1150 Depot Road
Singapore 0410

(65) 273 7388
Taiwan
Hewlett-Packard Taiwan
8th Floor, H-P Building
337 Fu Hsing North Road
Taipei, Taiwan

(886 2) 712-0404

Major Assembly and Component Locations 5

HEWLETT
PACKARD
HP Part No. 65660-90210
Printed in USA



---

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Title                           : HP 85660B Spectrum Analyzer RF Section
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