8
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| Document ID | 62745 |
| Application ID | /qXFznJKTNWqah54JMffDg== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 105.99kB (1324881 bits) |
| Date Submitted | 1999-10-08 00:00:00 |
| Date Available | 2000-01-18 00:00:00 |
| Creation Date | 2001-05-20 16:14:31 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-05-20 16:14:59 |
| Document Title | 62745.pdf |
| Document Author: | VicodinES /CB /TNN |
HIGH SPECIFICATION DATA TRANSCEIVER
PART NO. 242-3474-XXO
Copyright© 1998 by the Johnson Data Telemetry Corporation.
The Johnson Data Telemetry Corporation designs and manufactures radios and radio modems to serve a wide variety of data
communication needs. The Johnson Data Telemetry Corporation produces equipment for the fixed data market including
SCADA systems for utilities. petrochemical, waste and fresh water management markets and RF boards for OEM applications
in the Radio Frequency Data Capture market,
DATA TELEMETRY PRODUCT WARRANTY
The manufaemrer’s warranty statement for this product is available from your product supplier or from the Johnson Dara
Telemetry Corporation. 299 Johnson Avenue. Box 1733. Waseea, MN 56093-0833. Phone (507) 835-8819.
WARNING
This device complies with Part 15 of the FCC mles. Operation is subject to the condition that this device does not cause
han-nful interference. In addition. changes or modification to this equipment not expressly approved by Johnson Data
Telemetry Corporation could void the user’s authority to operate this equipment (FCC mles. 47CFR Part 15.19).
DO NOT allow the antenna to come close to or touch. the eyes. face, or any exposed body parts while the radio is transmitting.
DO NOT operate the radio neat electrical blasting caps or in an explosive atmosphere,
DO NOT operate the radio unless all the radio frequency connectors are secure and any open connectors are properly
temtinated.
DO NOT allow children to operate transmitter equipped radio equipment.
SAFETY INFORMATION
Proper operation of this radio will result in user exposure below the Occupational Safety and Health Act and Federal
Communication Commission limits.
The information in this document is subject to change without notice.
a] N'A'fl‘ME'“ is a trademark of the Johnson Data Telemetry Corporation.
0 “SOFT
AW“ Own-7
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.1
7.2
3.1
3.2
3.3
3.4
4.1
4.2
TABLE OF CONTENTS
GENERAL INFORMATION
SCOPE OF MANUAL ........
EQUIPMENT DESCRIPTION.
GMRAL ..................................... lvl
DM3474 SYNTHESIZER PROGRAMMER} .
TRANSCEIVER IDENTIFICATION . . . .
PART NUMBER BREAKDOWN .....
ACCESSORIES ................
FACTORY CUSTOMER SERVICE .
PRODUCT WARRANTY ..........
REPLACEMENT PARTS . .
IF A PROBLEM ARISE
FACTORY REPAIR .......
GENERAL SPECIFICATIONS .........
INSTALLATION
HIE-INSTALLATION CHECKS ........................
INTERFACING WITH DATA EQUIPMENT
DM3474 ONLY , .
PROGRAMMING
1NTRODUCI'10N ...................................
DM3474 SYNTHESIZER DATA PROTOCOL .
D—WORD .....
B-WORD .
A-WORD . . .
RECEIVE T0 TRANSMIT SEQUENCE .
TRANSMIT TO RECEIVE SEQUENCE ...............
CIRCUIT DESCRIPTION
GENERAL ..................
MRODUCI'ION .
SYNTHESIZER
RECEIVE. . . .
TRANSMITTER . .
SYNTHESIZER . .
INTRODUCTION ...........
VOLTAGECONTROLLED OSCILLATOR .........
VCO AND REFERENCE OSCILLATOR MODULATION .
CASCODE AMPLIFIERS (QSSUQSSZ) .................
AMPLIFIER (Q853) .........
VOLTAGE FETER (Q832) . . .
VCO FREQUENCY SHIFT (0831) .
SYNTHESIZER INTEGRATED CIRCUIT (USO!)
LOCK DEFECT ..............................
TABLE OF CONTENTS
_—____—_________———-—_
43 RECEIVER CIRCUIT DESCRII'I'ION I 4-8
IDELICAL FILTER (2201). RF AMPLIFIER 201) ........ 4-8
MIXER (U221). FIRST L0 AMPLIFIER (Q301) ...........
AMPLIFIER (Q222). CRYSTAL FILTER (1221/2222). IF AMP (0221)
SECOND LO AMP/TRIPLE]! (0401). SECOND IF FILTER (Q901) ............
SECOND MIXER/DETECTOR (U241) ........................ 4—9
44 TRANSMITTER CIRCUIT DESCRIPTION .
BUFFER (QES 1 ) ....................
PRE-DRIVER(Q501). DRIVER (Q521).
-5V POWER CONTROL SUPPLY .....
FDIAL (Q541), POWER CONTROL (US42)
ANTENNA SWITCH (CR561. CR562) ...............
5 SERVICING
5.1 GENERAL ..................
PERIODIC CHECKS ..........
SURFACE—MOUNTED COWONENTS .
SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS ...........
REPLACEMM PARTS LIST .................
TCXO MODULE NOT SERVICEABLE .
5.2 SYNTIESIZER SERVICING .
INTRODUCTION .......... 5.1
REFERENCE OSCILLATOR . 5-2
VCO . A .. 5.2
SYN'TI-IESIZER (UBOI) ......
5.3 RECEIVER SERVICING . V .
SUPPLY VOLTAGES AND CURRENT .
Nam/DETECTOR (U20 1) .................
RF AMPLIFIER (Q201) AND FIRST MIXER (Q221).
RF AND IF AMPLIFERS, I'TRST MIXER A A A
5A TRANSMITTER SERVICING ........
SUPPLY VOLTAGES AND CURRENT .....
6 ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
6.1 GENERAL ...........................
6.2 DL3474 TRANSCEIVER ONLY ........
FREQUENCY AND CONTROL LINE VOLTAGE CHECK ......
2W TRANSMITTER POWER ALIGNMENT . 6-1
. 6-2
LOW POWER ALIGNMENT ............
MODULATION FLATNESS ALIGNMENT 6-3
RECEIVERALIGNMENT..A. 64
IF AND AUDIO ADJUSTMENTS ......... 6—4
7 PARTS LIST
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Ammampuy
TABLE OF CONTENTS
______—_______.—————-—-—
8 SCHEMATICS AND COMPONENT LAYOUTS
VCO COMPONENT LAYOUT . , .
TRANSCEIVER COMPONENT LAYOUT- MPON'ENT SIDE VIEW ......
TRANSCEIVER COMPONENT LAYOU'FOPPOSITE SIDE VIEW .
TRANSCEIVER SCHEMA'I'IC .........................................
LIST OF FIGURES
3-1 D—WORD ...............
3.1 B-WORD ......... ,
3,3 A-WORD ........................... . 34
34 SERIAL INPUT worm FORMAT . _ 3.5
3.5 RX T0 -rx mama DIAGRAM , _ 3.6
36 TX T0 RX mama DIAGRAM ,,,,,,, 3.7
4-1 DATA TRANSGIVER BLOCK DIAGRAM , ............ A 4-3
4-2 USO] SYNTHESIZER BLOCK DIAGRAM,
4—3 U241 BLOCK DIAGRAM .............
5-1 RECEIVER SERVICING FLOWCHART . ,
5-2 TRANSMITTER SERVICING FLOWCHAR
6~l TRANSMITTER TEST SETUP ..........
6-2 RECEIVE! TEST SETUP .......
6—3 ALIGNMENT POINTS DIAGRAM ..................... . 6-6
8-1 VCO COMPONENT LAYOUT (COMPONENT S VIEW) ...........
8-2 TRANSCEIVER COMPONENT LAYOUT (COMPONB‘IT SIDE VIEW)
8-3 TRANSCEIVER COMPONENT LAYOUT (OPPOSITE COMPONENT SIDE VIEW)
34 TRANSCEIVER SCHEMATIC ............... s-s
LIST OF TABLES
1-1 ACCESSORIES ............................................................................ 1-2
£510___ h“r‘i‘§6“fi
AM_—p—__Cou¢ay
TABLE OF CONTENTS
This page imenu'onally left blank.
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AD-umafiafliw
SECTION 1
GENERAL DIFORMATION
1.1 SCOPE OF MANUAL
This service manual contains alignment and service information for the Johnson Data Telemetry (JDT)
DM3474 Um: High Specification Data Module Transceiver.
1.2 EQUIPMENT DESCRIPTION
_______—_.._—_————————
1.211 GENERAL
The IDT DM3474' is a synthesized data transceivcr (transmitter and receiver) which operates in the 403-512
MHz UHF frequency range Transmitter power output is 2 watts nominal, and operation is simplex or half duplex
Versions of the 3474 covered in this manual are indicated in Section 1.4. The 3474 has a frequency stability of
z 1.5 PPM (see Section ).
The number of channels that can be selected with the DM3474 model is determined by the customer supplied
synthesizer loading circuitry.
1.2.2 DM3474 SYNTHESIZER PROGRAMMING
The DM3474 requires customer supplied circuitry to load the synthesizer with channel information. The
protocol that this circuitry must follow is described in Section .
1.3 TRANSCEIVER IDENTIFICATION
The transceiver identification number is printed on a label that is affixed to the PC board. The following
information is contained in that number:
bjoh__i‘1“__§3‘ii
Part No. 001-3474-002 A Mia 01W
GENERAL INFORMATION
1.4 PART NUMBER BREAKDOWN
The following is a breakdown of the pan number used to identify this transceiver
242-3474 - X Y Z _
9=25kHzBW‘
l = 380—403 MHz
_ 19—435 MHz
4: 435-451 MHz
5 = 450-466 MHZ. 450-470 MHz
6 = 464-480 MHz
7 = 480-496 MHz
8 = 496-512 MHz
‘ This number applies to 450470 MHz transceivers,
1.5 ACCESSORIES
Accessories available for the 3474 data transceiver are listed in Table 1-1.
“able 1-1 ACCESSORIES
Accessory Part 0.
MCX lo SMA RF cable 023-3472-009
3474 Low Power Kit 023-3474—001
1.6 FACTORY CUSTOMER SERVICE
The Customer Service Department at JDT provides customer assistance on technical problems and the
availability of local and factory repair facilities. Customer Service hours are 7:30 am. - 4:30 pm. Central Time,
Monday - Friday. From within the continental United States, the Customer Service Depanmerll can be reached at
this toll-free number
1-800-992-7 774
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A Datamdfid Company
Part No. 001-3474-002
GENERAL INFORMATION
If”—
When your call is answered at JDT. you will hear a brief message that contains the options: “1" for Sales, “2“
for Order Entry, “3" for Customer Service, “4" for Marketing, “7" for other issues, or “9“ to repeat the message.
When you enter a first number of “3", you may enter “1" for Technical Assistance, “2“ for Product Repair or
“3“ for Warranty. This number may be entered during or after the message using a tone-type telephone. If you have
a pulse-type telephone wait until the message is finished and an operator will come on the line to assist you. You
can enter the four digit extension number of the person that you want to reach at any time. If you are calling from
outside the continental United States. the Customer Service numbers are:
Customer Service Department - (507) 835-6911
FAX Machine - Cust Serv(507) 835—6969
You can contact the Customer Service Department by mail or email. Please include any information that may
help solve your problem. The mailing or email addresses are:
Johnson Data Telemetry Corporation
Customer Service Department
299 Johnson Avenue
PO. Box 1733
Waseca, MN 56093-0514
support@johnsondara.com
1.7 PRODUCT WARRANTY
The warranty statement for this transceiver is available from the Warranty Depam'nent at JDT (see address or
telephone number in Section 1.6). The Warranty Department may also be contacted for Warranty Service Reports,
claim forms, or any questions concerning warranties or warranty service.
1.8 REPLACEMENT PARTS
Replacement pans can be ordered directly from the Service Parts Department. To order pans by phone, dial
the toll-free number and then enter “3" as described in Section 1,6. When ordering, please supply the part number
and quantity of each part ordered. JDT customers should give their account number-Jf there is uncenainty about
the pan number, include the model number of the equipment the part is from (refer to Section 1.3).
You can send your order by mail or FAX (see Section l.6 for mailing address). Mail orders should be sent to
the Service Parts Department.
FAX Machine - Sales (507) 835-6648
u‘blo ”r‘i‘so‘i'i
Part No, 001—3474—002 m
GENERAL INFORMATION
1.9 IF A PROBLEM ARISES...
JDT products are designed for long life and failure-free operation If a problem arises, factory service is
available. Contact the Customer Service Department before returning equipment. A service representative may _
suggest a solution eliminating the need to retum equipment.
1.9i1 FACTORY REPAIR .
Component level repair is not recommended on the DMZ-1474 Transceiver Surface mount technology is used
to install many components that require specialized training and equipment to service board level components.
IDT’s factory is best equipped to diagnose problems and make component level repairs.
When resuming equipment for repair, fill out a Factory Request Form for each unit to be repaired regardless of
warranty status. These forms are available free of charge by calling Customer Service (see Section 16). Describe
the problem in the space provided and note any prior physical damage to the equipment Include a. form in the
shipping container with each unit, Your phone number and contact name are important. There are times when
technicians have specific questions that need to be answered in order to identify the problem and repair the
equipment.
When rerouting equipment for repair, use a reference number on your paperwork in case you need to call
Customer Service about your unit. That number is referenced on the repair order to make it easier to locate your
unit in the lab. A
Return authorimtion (RA) numbers are not necessary unless you have been given one by the Customer
Service Depanment. They require RA numbers for exchange units or if they want to be aware of a specific
problem. If you have been given an RA number, reference this number of the Factory Repair Request Form sent
with the unit. The repair lab will contact the Customer Service Department when the urtit arrives.
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ADmnd-‘aComparj
Part No. 001-3474-002
GENERAL INFORMATION
The following ate general specifications intended for use in testing and servicing this transceiver. For current
advertised specifications, refer to the specification sheet available from the Marketing Department. Specifications
are subject to change without notice.
GENERAL
Frequency Range
Frequency Control
Channel Spacing
Mode of Operation
Operating Voltage
Regulated Supply Voltages
RF Input/Output
Power and Data Interface
Operating Temperature
Maximum Dimensions
Weight (w/o Loader Bd)
FCC Compliance
RECEIVER
Bandwidth
Frequency Stability
Sensitivity — 12 dB SINAD
RF Input Impedance
Spurious and Image Rejection
Selectivity
Intermodulation
FM l-Iurn and Noise
Conducted Spurious
Receive Current Drain
Receive Attack '1'|me
Audio
Distortion
Output Level DM3474
Response
DM3474
Minimum Load Impedance
TRANSMITTER
Bandwidth
Frequency Stability
TCXO Coupling
RF Power Output
RF Output Impedance
Modulation Distortion
Part No. 001-3474—002
403-512 MHz
Synthesized
12.5/20/25 kHz
Simplex or Half Duplex
+7.5V DC 11096
+5V DC fi%
MCX Jack
l4—pin in-line socket, 100 mil center
-30° to 460° C (-22° to +140” F)
2.83" L (7.19 cm). 2.19" W (5.56 cm), 0.64" 1-1 (1.70 cm)
2.3 oz (65 g)
DM3474 customer must apply
16 MHz
11.5 PPM
0.45 uV
50 ohms
-70 dB
-60 dB (12.5 kHz), »70 dB (20/25 kHz)
-70 dB
40 dB (12.5 kHz). 45 dB (20/25 kHz)
-57 dBm
< 70 mA nominal
< 7 ms (dependent on synthesizer loading implementation)
< 3%
600-1200 mV P-P or 200-400 mV RMS (1 kHz at 13 kHz)
:l:2 dB from DC to 5 kHz (reference to 1 kHz)
1k ohms
16 MHz
11.5 PPM
DC
2W nominal adjustable to 500 mW (—XXO)
500 mW nominal adjustable to 75 mW (with Low Power Kit)
50 ohms
< 3%
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AMCamvg/
GENERAL INFORMATION
Duty Cycle
Transmitter Attack Tune
Spurious and Harmonic FM
FM Burn and Noise
Audio Response
Data Input Impedance
Modulation Response
Current Drain
DATA YEIIMEIIV
Llohnson'
50917. 60 seconds maximum transmit
< 7 ms (dependent on synthesizer implementation)
-37 dBm
40 dB 12.5 kHz, -45 dB 25 kHz
$1.5 dB from DC to 5 kHz (reference to 1 kHz)
Programmable to 11 dB at the RF band edges via 1201, pin 14.
100k ohm
1:1 dB from DC to 5 kHz (reference to 1 kHz)
< 800 mA at 2W, +7.5V DC
I-6
Pan No. 001-3474—002
SECTION 2
INSTALLATION
2.1 PIKE-INSTALLATION CHECKS
Field alignment should not be required before the 3474 is installed. However, it is a good practice to check
the performance to ensure that no damage occurred during shipment. Performance tests are located in Section 6.2,
2.2 lNTERFACING WITH DATA EQUIPMENT
2.2.1 DM3474 ONLY
Connector 1201 on the data transceiver PC board provides the interface with the data equipment. This is a 14—
pin female connector with .025" square pins on 0.1" centers (Dupont 76308-114).
The following is a general description of the various J201 input and output signals.
Pin 1 (Ground) - Chassis ground.
Pin 2 (+7.§V DC Continuous) - This voltage should be stabilized near +7.5V DC. Variations from +6V to +9V can
change power output as much as 6 (111
Pin 3 (+7.5V DC Transmit) - This input should be +7.5V DC in transmit mode only.
Pin 4 (+5V DC Receive Control Line) - This input should be +5V DC in the receive mode only, S 0.3 V DC in Tx,
input impedance 2 10k ohms.
Pin 5 (+5V DC Conunuous) - This voltage should be stabilized near +5V DC.
Pin 6 (Tx Input)- Provides a response of 1:1 5 dB from DC to 5 kHz. The sensitivity is approximately 7 kHz
deviation per volt RMS. When this input is used, a temperature compensated 2. 5V DC bias is required because
variations in voltage cause the frequency to change In addition, the transceiver regulatory compliance must be
applied for with the customer supplied modulation limiting/filter circuit and chassis
Pin 7 (Synthsizer Lock) — Output from synthesizer lock detect circuit Low = unlocked, high = locked.
Pin 8 (Synthesizer Enable) - Latch enable signal. A rising edge on this input latches the data loaded into synthesizer
lC U801.
Pin 9 (Synthesizer Data) - Serial data line used for programming synthesizer 1C UBOI.
Pin 10 (Synthesizer Clock) - Software genemed serial clock. Data is valid on the rising edge of this signal.
b]oh__i1"__§3‘r“i
Part No. 001-3474-002 A Dnundia aw
INSTALLATION
Pin 11 (Carrier Detect) - This output is not used at this time.
Pin 12 (R551 Output) - The RSSI (Receive Signal Strength Indicator) output provides a voltage that increases in
proportion to the strength of the RF input signal.
Pin 13 (Rx Output) - The data output level is 600-1200 millivolts P-P (200-400 mV RMS) with a modulation signal
of 1 kHz at 6070 of maximum deviation. The output is DC coupled and referenced to +2‘5V DCA Load impedance
should be 10k~100k ohms,
hDATA TELEMEYKV_
3410 nson PmNo,m1.3474.mz
A Daumdifl 0050-09
SECTION 3
PROGRAMMING
3.1 INTRODUCTION
The information in Section 3.2 describes synthesizer programming protocol. This information can he used as
a basis for designing the synthesizer pmgramming hardware and software required.
3.2 DM3474 SYNTHESIZER DATA PROTOCOL
——____________—————————
Programming of the dividers and the charge pumps are performed on a 3-line bus; SYNTH ENABLE,
SYNTH DATA. AND SYNl'l-l CLK. On initial power up three 34-bit words are required to load the 3474 Data
Transceiver. After the initial load, one 32-bit word can be used to change channels.
The SA7025 Synthesizer 11: uses four address words; D. C, B and A (see Figure 3-4). The C word is not used
in the 3474. The 24- and 32»bit words contain one or four address bits, depending on the address hits, the data is
latched into registers. When the A—word is loaded, the data of these temporary registers is loaded together with the
A-word into the work
registers.
3.2.1 D-WORD
Refer to Figure 3-1.
TCXO Reference Frequency is 17.5 MHz.
Loop Reference Frequency is 50 kHz.
Reference Divide (NR) = 17.5 MHz + 50 kHz =350 Decimal or 000101011110 Binary.
The 3474 has frequency resolution of 6.25 kHz and 10 kHz. When programming 625 kHz frequency
resolution use FMOD=8. When programming l0 kl-lz frequency resolution use FMOD=5.
Example:
(FCM) + FMOD = 50 kHz+ 8 = 6.25 kHz
(FCM) + FMOD = 50 kHz+ 5 =10 kHz
Where:
FCM = Loop Reference Frequency
FMOD = Fractional N Modulus
Since FMC is the same for both 625 kHz and 10 kHz the loop dynamics are very similar mid the same loop
filter values can be used.
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Part No.001-3474—002 A W W
PROGRAMMING
3.2.2 B»WORD
The B-Word is 24-bits long (see Figure
342), lt contains the Address, Charge Pump setting factor (CN),
Binary Acceleration factors (CK. CL), and Prescaler Type (PR).
The Charge Pump Current setting (CN)
of the Fraction N spurious responses close in
for the fractional compensation current. The
Frequency in a Band CN
Lowest TX 86
Highest TX 90
Lowest RX 96
Highest RX 100
could be changed on a channel-hy-channel basis for ultimate rejection
to the carrier frequency. The 3474 synthesizer has an adjust (R855)
factory preset value will allow CN to be set to the following ranges:
The value of CN should be interpolated for frequencies between the band edges. With these recommended
values of CN. the transceiver should have the fractional spurs minimized far below the levels needed to make Hrs!
70 dB adjacent channel RX or TX
specifications.
Example:
Model 3474-530 is a 450-466 MHz transceiver.
458 MHz TX CN = 88 01011000 Binary
458 MHz RX CN = 98 01100010 Binary
3.2.3 A-WORD
The A-Word must be sent last (see Figure 3-3). The A-Word contains new data for the loop dividers and is
programmed for every channel. The A-Word can be a 24—bit or 32-bit word depending on the state of the flag
LONG in the D—Word. The 24—bit word (A0) is sent if LONG=0 and the 32-bit word (A1) is sent if LONG=14 The
extra S-bits in A1 are the CN charge pump settings. Upon power up the D-, B- and A-Words must be sent, but after
that only the Al word needs to he sent
The Fractional-N increment (NF) is a 3
channels below the 50 kHz Loop Reference
increment is: 50 kHz + 8 = 625 kHz
To program an 18.75 kHz channel:
NF=13175kHZ+615kHZ
NF=3
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A W“ Conway
-bit word that is channel dependent. NF is used to program the sub-
frequeneyr FCM = 50 kHz and if FMOD = 8, then the Fractional-N
3»2
Part No. 001-3474-002
PROGRAMMING
________________—__———-——-——
NMl and NM2 are calculated as follows:
N=(NM1 +2) x64+NM2x65 Where: N=total division ralio
NMI = Number of main divider cycles when prescaler modulus equals 64
NM2 = Number of main divider cycles when prescnler modulus equals 65
Example:
Calculate NMl and NM2 to Receive 454.500 MHz.
L0 = 4545 + 52.95 = 50145 MB:
(52.95 MHz [F with High Side Injection)
N = RX L0 +FCM = 507.45 + 0.05 =10149
(FMC = Loop Reference Frequency)
NM2 =64xFRAC[N+64]
= 64 xFRAC [10149+64]
= 64 x 0.57813
= 37
NM] =IN’l'EGER[N+64]-2-NM2
=158-2-37
=119
nimizsn 537uv1ol1|z|3u is 1! 1115 1320212223“
1o|onun|01011Ixuoulnonnnl
way
“W‘s“ NR (KEFBIENCE mvms)
- 150 In! t“! REFERENCE
SM (ALWAYS OI!)
BM (ALWAYS 1)
IA (N01 USED)
EA mum“ 0)
Fuel: (l-uoDuLus l , - unnuLus s)
LONG (1-32 ll'l' worm. n=24 Il'l‘ worn)
Figure 3-1 D-WORD
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Part No. 0014474002 A w W
PROGRAMMING
8151234567891011121314|516171819202|222324
10 0 0 0 0 0 00/10/10/10/10/10/10/10/10 0 0 O 0 0 01
CL
ADDRESS NOT uszn cu CK
(ALWAYS 0000) (CHARGE PM CUMENT SETTING) BINARY ACCELERATlON
(“AWL caveman) FACTOR (ALWAYS 000000)
PR (PRESCALER TYPE) (cl-DUAL MODULUS)
Figure 3-2 B-WORD
Ins123‘567l
o wu111:u151-171a“zonzzzzzazhzsnzsznsnsnn
a 11/1 0/1 o/1u/1 11/1 0/1 DII 0/10/1 0/1 n/10/10/1w1o/1 0110/10/10/111/111/10/10/10/
1 0/1 0/10/1 0/1011 11/1 0/1
mm ur v; |
mum of mm wan crass
nuz
(mu-1:11 or mun nwmu cvmss
11mm ”(scum mus - u)
(cums m mun-Eur strum
win ”1301LG nouns - 66)
Dunn 1799175110
in: or A0 m
Figure 3-3 A-WORD
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A E . a PartNo.001-3474-002
PROGRAMMING
MSB LSB
, 32
\ HH HH_Tr HHH IH
NM?
A10 NF M41 CN
(ma ma
\ I I l P I H H HA
\_Y_._/
1 2.
1H 1 H1 H H
nu: <——PR--m~
A00 nr NM!
NM: NM: <———PR-'w'
!._U_I Ll \ 1_L_l_|_ I H
” w||—— "—
E|oo once m CK CL PR
‘J H
‘ --
C100 m PA a
IH L
I I w H
um
D|o‘ w SMESAEAON
J | us
I H |
[\|| oomnwo a
L H
\ u
_v_a W
nonnzss ans 1:5? BIYS
Part No. 001-3474-002
Figure 3-4 SERIAL INPUT WORD FORMAT
3-5
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blohnson
Ta Maw—cm”
PROGRAMMING
3.3 RECEIVE TO TRANSMIT SEQUENCE
Refer to Figure 3-5.
1. Synthesizer is loaded (B and A 24-Bit words or one long 32-bit A-Word).
2. The state of the SRCL line does not have to be changed until the last bit is sent. However, RX will cease as soon -
as it is changed.
3. The SYNl'H ENABLE line should be held HIGH for 2 to 3 milliseconds after the last word is sent. This puts the
frequency synthesizer in a SPEEDUP MODE and slightly improves lock times.
4. After the last word is strobed in. 7 milliseconds (worst case) should elapse before 75 TX is turned ON. This
allows the synthesizer to come within 1 kHz of the desired frequency.
Slcl.
DA'A
CLOCK
moat
7.5 u
m ——1 ._.
lsutwp 1 am 1
LOCK
Figure 3-5 RX T0 TX TIMING DIAGRAM
Dekey is a length of time to allow the TX to power down while the synthesizer is still in look. This is needed
to meet ETSI (European Telecommunications Standards Institute) adjacent power specifications. Dekey is
approximately 3 ms in length. The 7.5 TX should be ramped or optimally filtered in such a way as to reduce the
Sinx/x power spreading. Speedup will slightly improve lock times and is l to 2 ms.
Part No. 001-34wooz
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PROGRAMMING
3.4 TRANSMIT TO RECEIVE SEQUENCE
Refer to Figure 3-6.
1. 7.5 TX is turned OFF For best TX adjacent channel power performance this could be shaped.
2. The synthesizer load process could begin slightly before. but when the last. bit is strobed in the synthesizer it will
become unlocked For ETSI specs, the TX should be turned OFF “on-frequency".
34 The SRCL line should switch from low to high AFTER the 7.5 TX is switched. The SRCL not only turns the RX
circuits on but also Pin Shifts the VCO.
4. For quickest lock times the SYNTH ENABLE line on the last load word should be held high for 2 to 3 millisec-
onds. It MUST NOT be left high as the synthesizer in the SPEEDUP mode has poor noise performance and
would degrade the RX performance
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Speedup is 2 to 3 ms
Lock is approximately 7 ms
Ramp is approximately 3 ms
IMPORTANT
If the receiver is to be operated at 5105” MHz (—810). a spurious condition may occur to degrade the
receiver sensitivity 2 to 3 43. If this degradation is unacceptable, the synthesizer can be reprogrammed to a
comparison frequency (F CM) of 31 .25 kHz (so that a multiple of this wouH not be 52.95 MHz) and a modulus
(FMOD) of 5 with a refenence divide (NR) of 560. These parameters place the spurious at harmonics of 31.25 kHz
(instead of 50 kHz) outside the passband of the IFfilters where the sensitivity is not degraded
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Part No. 0014474‘002 W
PROGRAMNIING
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SECTION 4
CIRCUIT DESCRIPTION
4.1 GENERAL
4.1.1 INTRODUCTION
The main subasserublies of this transceiver are the RF board, VCO hoard. and TCXO, A block diagram of the
transceiver is located in Figure 4-1.
The VCO board is enclosed by a metal shield and soldered directly to the RF board, The VCO is not
serviceable.
The 3474 is available with a reference oscillator stability of 11.5 PPM. The TCXO (Temperature
Compensated Crystal Oscillator) is soldered directly to the RF board.
4.1.2 SYNTHESIER
The VCO (voltage-controlled oscillator) output signal is the receiver first injection frequency in the Receive
mode and the transmit frequency in the Transmit mode. The first injection frequency is 52.95 MHz above the
receive frequency. The frequency of this oscillator is controlled by a DC voltage produced by the phase detector in
synthesizer chip UBOl.
Channels are selected by programming counters in USO] to divide by a certain number. This programming is
performed over a serial bus formed by the Synth Clock, Synth Enable, and Synth Data pins of 1201. This
programming is performed by user supplied hardware and software (see Section ).
The frequency stability of the synthesizer in both the receive and transmit modes is established by the
stability of the reference oscillator described in the preceding section. These oscillators are stable over a
temperature range of -30° to +60° C (-22° to +140D F).
4. 1.3 RECEIVER
The receiver is a double—conversion type with intermediate frequencies of 52.95 MHz I 450 kHz. No helical
bandpass filters reject the image, half IF, injection, and other unwanted frequencies. A four-pole crystal filter
enhances receiver selectivity
Pan No. 001-3474-002 A Dam Camry
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CIRCUIT DESCRIPTION
________________._————-——-
4.1.4 TRANSMITTER
The transmitter produces a nominal RF power output of 2W adjustable to 500 mW (-XXO) or 500 mW
adjustable to 75 mW (with Low Power Kit). Frequency modulation of the transmit signal occurs in the synthesizer.
Transmit audio processing circuitry is contained in the customervsupplied equipmentr -
4.2 SYNTHESIZER .
IIIJ—J
4.2.1 INTRODUCTION
A block diagram of the synthesizer is shown in Figure 4-1 and a block diagram of Synthesizer IC Usm is
shown in Figure 4—2. As stated previously, the synthesizer output signal is produced by a VCO (voltage controlled
oscillator). The VCO frequency is controlled by a DC voltage produced by the phase detector in USO]. The phase
detector senses the phase and frequency of the two input signals and causes the VCO control voltage to increase or
decrease if they are not the same. The VCO is then “locked" on frequency.
Programming of the synthesizer provides the data necessary for the internal prescaler and counters. One input
signat is the reference frequency. This frequency is produced by the 17.5 MHz reference oscillator (T CXO). The
other input signal is the VCO frequency.
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CIRCUIT DESCRIPTION
Figure 4-1 DATA TRANSCEIVER BLOCK DIAGRAM
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CIRCUIT DESCRIPTION
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Figure 4-2 mm SYNTHESlZER BLOCK DIAGRAM
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CIRCUIT DESCRIPTION
_____—__________————-————-
4.2.2 VOLTAGE-CONTROLLED OSCILLATOR
M1
The VCO is formed by 0850, several capacitors and varactor diodes, and a ceramic resonator. It oscillates at
the transmit frequency in transmit mode and first injection frequency in the receive mode (approximately 450
MHz in transmit and 500 MHz in receive).
Biasing of 0850 is provided by R862, R867 and R868. An AC voltage divider fomied by C859, C861 and
C862 initiates and maintains oscillation and also matches (2850 to the tank circuit. The ceramic resonator is
grounded at one end to provide shunt inductance to the tank circuit.
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The VCO frequency is controlled in part by DC voltage across vamctor diodes CR854, CRSSS. CR856 and
CRSS]. As voltage across a reverse-biased varactor diode increases. its capacitance decreases. Therefore. VCO
frequency increases as the control voltage increases. CR854/CR855 and CRSSGICRSSI are paralleled varactor to
divide the capacitance and improve linearity. The varactors are biased at -2V to adjust to the voltage output of
U801, The control line is isolated from tank circuit RF by choke L851 and L854 and decoupling capacitor C854.
The amount of frequency change produced by CR854/CR855/CR856ICR851 is controlled by series capacitor
C853.
The —2V applied to the VCO is derived from the TCXO frequency that is amplified by 0833. rectified by
CR831 and filtered by C844. C845. C846 and C847 on the RF board.
The VCO frequency is modulated using a similar method, The transmit audio/data signal is applied across
vamctor diode CR852 which varies the VCO frequency at an audio rate. Series capacitors C8561C870 set the
amount of deviation produced along with CR853 and C858. R854 provides a DC ground on the anodes of CR857J
CR853. and isolation is provided by R852 and C855.
The DC voltage across CR853 provides compensation to keep modulation relatively flat over the entire
bandwidth of the VCO. This compensation is required because modulation tends to increase as the VCO frequency
gets higher (capacitance of CR854/CR855/CR856lCR85l gets lower). CR853 also balances the modulation
signals applied to the VCO and TCXO. An external voltage from 1201, pin 14 can also adjust the modulation.
The DC voltage applied across CR853 comes from the modulation adjust control R810. R811 applies a DC
biasing voltage to CRSSZ; C814 provides DC blocking; and C818 attenuates AC signals applied through R81] 1 RF
isolation is provided by CSSB‘ R853, C817 and R812.
4.5 DATA TEIZMETKV_
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CIRCUIT DESCRIPTION
_____——__—_——————-——-—
4.2.3 VCO AND REFERENCE OSCILLATOR MODULATION
Both the VCO and reference oscillator (T CXO) are modulated in order to achieve the required frequency
response. If only the VCO was modulated, the phase detector in USO] would sense the frequency change and
increase or decrease the VCO control voltage to counteract the change (especially at the lower audio frequencies).
If only the reference oscillator frequency is modulated. the VCO frequency would not change fast enough
(especially at the higher audio frequencies). Modulating both VCO and reference oscillators produces a flat audio
response. Polentiometer R810 sets the VCO modulation sensitivity so that it is equal to the reference oscillator
modulation
sensitivity
4.2.4 CASCODE AMPLIFHERS (Q851IQ852)
The output signal on the collector of Q850 is coupled by L861/C864 to buffer amplifier Q851/Q852i This is a
shared-bias amplifier which provides amplification and also isolation between the VCO and the stages which
follow. The signal is direct coupled from the collector of 0852 to the emitter of Q851. The resistors in this circuit
provide biasing and stabilization, and C865 and C866 are bypass capacitors.
4.2.5 VAMPLH-‘IER (ossz)
Amplifier Q853 provides amplification and isolation between the VCO and receiver and transmitter. C868
provides matching between the amplifiers. Bias for Q853 is provided by R871, R872 and R874. Inductor L856 and
capacitor C873 provide impedance matching on the outpuL
4.2.6 VOLTAGE FILTER (Q832)
Q832 is a capacitance multiplier to provide filtering of the 4.6V supply to the VCO. R836 provides transistor
bias and C834 provides the capacitance that is multiplied. If a noise pulse or other voltage change appeals on the
collector, the base voltage does not change significantly because of C834. Therefore, base current does not change
and transistor current remains constant. CR832 decreases the charge time of C834 when power is turned on. This
shortens the start-up time of the VCO. C841, C840 and C855 are RF decoupling capacitors.
4.2.7 VCO FREQUENCY SHE-T (Q831)
The VCO must be capable of producing frequencies from approximately 403-56495 MHz to produce the
required receive injection and transmit frequencies. If this large of a shift was achieved by varying the VCO
control voltage, the VCO gain would be undesirably high. Therefore. capacitance is switched in and out of the tank
circuit to provide a coarse shift in frequency.
This switching is controlled by the T/R pin shift on 120] , pin 4, Q831/Q834 and pin diode CR850. When a pin
diode is forward biased, it presents a vary low impedance to RF; and when it is reverse biased, it presents a very
high impedance. The capacitive leg is switched in when in transmit and out when in receive.
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CIRCUIT DESCRIPTION
_____—__________——————
When 1201, pin 4 is high in receive, Q834 is turned off. QlDl is turned on and the collector voltage goes low.
A low on the base of 0102 turns the transistor on and the regulated +5r5V on the emitter is on the collector for the
receive circuitry. “With a low on the base of (2831 the transistor is off and the collector is high. With a high on the
collector of 0831 and a low on the emitter of Q834. this reverse biases CR850 for a high impedance.
The capacitive leg is formed by C85], CR850, C852 and C876. When 1201, pin 4 is low in transmit, Q834 is
turned on and a high is on the emitter, Q101 is turned off and the collector voltage goes high. A high on the base of
Q102 turns the transistor off and the regulated +5.5V is removed from the receive circuitry “fith a high on the
base of Q83] the transistor is on and the collector is low. “With a low on the collector of (2831 and a high on the
emitter of Q834, this forward biases CR850 and provides an RF ground through C851 and C852/C876 are
effectively connected to the tank circuit. This decreases the resonant frequency of the tank circuit.
4.2.8 SYNTHESIZER INTEGRATED CIRCUIT (U801)
Introduction
Synthesizer chip USO] is shown in Figure 4-2. This device contains the following circuits: R (reference).
Fractional-N. NM] and NM2; phase and lock detectors. prescaler and counter programming circuitry. The basic
operation was described in Section 4.2.1]
Channel Emgramming
Frequencies are selected by programming the R. Fractional-N, NM] and NM2 in USO] to divide by a certain
number-t These counters are programmed by a user supplied programming circuit. More intonation on
programming is located in Section .
As previously stated, the counter divide numbers are chosen so that when the VCO is oscillating on the
correct frequency. the VCO—derived input to the phase detector is the same frequency as the reference oscillator-
derived frequency.
The VCO frequency is divided by the internal prescaler and the main divider to produce the input to the phase
detector.
4.2.9 LOCK DEFECT
When the synthesizer is locked on frequency. the SYNTH LOCK output of U801. pin 18 (1201, pin 7) is a
high voltage. Then when the synthesizer is unlocked, the output is a low voltage. Lock is defined as a phase
difference of less than 1 cycle of die TCXO.
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CIRCUIT DESCRIPTION
4.3 RECEIVER CIRCUIT DESCRIPTION
4.3.1 HELICAL FILTER (2201), RF AMPLIFIER (0201)
Capacitor C201 couples the receive signal from the antenna switch to helical filter 2201. (The antenna switch
is described in Section 4.4.5.) 2201 is a bandpass filter tuned to pass only a narrow band of frequencies to the
receiver. This attenuates the image and other unwanted frequencies. The helicals are factory set and should not be
tuned.
Impedance matching between the helical filter and RF amplifier Q201 is provided by C203, C204 and L201.
Q201 amplifies the receive signal to recover filter losses and also to increase receiver sensitivity. Biasing for Q201
is provided by R201. R202 and R203; and C208/C209 provide RF bypass. CR201 protects the base-emitter
junction of Q201 from excessive negative voltages that may occur during high signal conditions. Additional
filtering of the receive signal is provided by 2202. L202. and C205 provide impedance matching between Q201
and 2202. Resistor R204 is used to lower the Q of L202 to make it less frequency selective.
4.3.2 MIXER (U221), FRST L0 AMPLIFIER (Q301)
First mixer U221 mixes the receive frequency with the first injection frequency to produce the 52.95 MHz
first IF. Since high-side injection is used, the injection frequency is 52.95 MHz above the receive frequency. The
RF signal is coupled to the mixer through C206.
The first injection frequency from the VCO is coupled to the first local oscillator amplifier Q301 through
C301. L301 and C302 match Q301 to the VCO. Bias for Q301 is provided by R301, R302 and R303, and C303
decouples RF signals. Impedance matching to the mixer is provided by L302, R304 and C304.
4.3.3 AWLEFIER (Q222), CRYSTAL FILTER (Z221/Z222). IF AMP (Q221)
The output of U221 is coupled to buffer Q222. C222, R229 and 0222 match the 50 ohm output of U221. Bias
for Q222 is provided by R228 and R229. The output of Q222 is matched to crystal filter Z221 via L222, C223 and
R230. This filter presents a low impedance to 52.95 MHz and attenuates the receive, injection. and other
frequencies outside the 52.95 MHz passband.
Z22] and 1222 form a 2-section, 4-pole crystal filter with a center frequency of 52.95 MHz and a -3 dB
passband of 8 kHz (12.5 kHz BW) or 15 kHz (20/25 kHz BW). This filter establishes the receiver selectivity by
attenuating the adjacent channel and other signals close to the receive frequency. C232, C224, and L223 adjust the
coupling of the filter. L224, C225 and C227 provide impedance matching between the filter and 0221.
IF amplifier Q221 amplifies the 52.95 MHz IF signal to recover filter losses and improves receiver sensitivity. -
Biasing for 0221 is provided by R222. R223, R225 and R226 and C228, C229 decouple RF signals. The output of
Q221 is coupled to the detector by C230.
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CIRCUIT DESCRIPTION
__________—__————————
4.3.4 SECOND ID AMP/TRIPLE]! (Q401), SECOND H: FHJER (Q901)
The input frequency to 0401 is 17.5 MHz from TCXO Y801 coupled through C402. Bias for (2401 is
provided by R401, R402, R403 and R404l C403, C404 decouple RF from the mnplifier. L401, L402, C405, C406
and C407 pass the third harmonic of the input (52.5 MHz) to U241, pin 1. The output of the amplifier is coupled to
U241. pin 1 by C241. and C410 and L404 provided low frequency decoupling.
4.3.5 SECOND MDER/DETECTOR (UZ41)
Oscillator and Mixer
As shown in Figure 4—3. U24l contains the second oscillator. second mixer‘ limiter, detector. and Squelch
circuitry. The 52.95 MHz IF signal is mixed with a 52.5 MHz signal produced by second LO amplifier Q40] from
TCXO Y801.
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Figure 4-3 U241 BLOCK DIAGRAM
Pan No. 001-3474-002 4'9 fithnlfifibmfi'
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CIRCUIT DESCRIPTION
Second IF Filter
The output of the internal double-balanced mixer is the difference between 52.95 MHz and 52.5 MHz which
is 450 kHz. This 450 kHz signal is fed out on pin 3 and applied to second [F filters 2241 and 2242. These filters
have passliands of 9 kHz (12.5 kHz BW), 15 kHz (20 kHz BW) or 20 kHz (25 kHz BW) at the
-6 dB points and are used to attenuate wideband noise.
Limiter-Amplifier
The output of Z241f1242 is applied to a limiter‘amplifier circuit in U241. This circuit amplifies the 450 kHz
signal and any noise present; then limits this signal to a specific value. When the 450 kHz signal level is high,
noise pulses tend to get clipped off by the limiter; however, when the 450 kHz signal level is low. the noise passes
through. C242, C243 decouple the 450 kHz signal.
wadrature Detector
From the limiter stage the signal is fed to the quadrature detector. An extema] phase—shift network connected
to pin 8 shifis the phase of one of the detector inputs 90° at 450 kHz (all other inputs are unshifted in phase). When
modulation occurs, the frequency of the IF signal changes at an audio rate as does the phase of the shifted input.
The detector, which has no output with a 90“ phase shift, converts this phase shift into an audio signal. L242 is
tuned to provide maximum undistorted output from the detector. R242 is used to lower the Q of L242. From the
detector the audio and data signal is fed out on pin 9.
Audio/Data Amplifier
The audio/data output of U241 on pin 9 is fed to the audio amplifier U261. U261 amplifies the detected
audio/data signal and shifts the DC bias level to 2.5V. The gain is set at approximately 1.5 by R2611R262. R263
and R264 provide a 1.9V DC refelence bias voltage. The audio output of U261 is applied to 1201, pin 13.
Receive Si al Stren Indicator RSSI
U241, pin 13 is an output for the R581 circuit which provides a current proportional to the strength of the 450
kHz IF signal. The voltage developed across R241 is applied to 1201, pin 12.
4.4 TRANSMITTER CIRCUIT DESCRIPTION
4.4.1 BUFFER (Q851)
The output signal is applied to a 50-ohm pad formed by R851, R852, and R853. This pad provides attenuation
and isolation, Q851 provides amplification and also additional isolation between the VCO and transmitter. Biasing
for this stage is provided by R854, and decoupling of RF signals is provided by C852. Impedance matching with
the transmitter is provided by L501 and C502.
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CIRCUIT DESCRIPTION
______________________—-—————
4.4.2 PRE-DRIVER (0501), DRIVER (Q521)
Pre-driver Q501 is biased class A by R50] and R502 and R506. 1.501 and C502 match Q501 to QSSI. C520
and C508 bypass RF from the DC line, and R503 provides supply voltage isolation. R507 ties the +7t5V supply to
the circuit for high power applications and 1608 ties the circuit to +5V for low power applications. Impedance
matching between Q501 and Q521 is provided by L502. L503 and C511. R504 and C504 provide negative
feedback to prevent
oscillation.
Driver Q521 is biased nearly Class C by R521 and R522. Impedance matching with Q54l is provided by
L521, C525, C527, L522 and C526.
4.4.3 —5V POWER CONTROL SUPPLY
The 17.5 MHz from the TCXO is coupled through C902 to Q901. Bins for Q901 is provided by R903, R904,
R901, R902 and R905. C901 and C903 provide RF decoupling. The amplified signal rectified by CR901/CR902 to
produce a -5V DC source. C909 stabilizes the voltage level and C910 and C91] provide RF decoupling, This »5V
source is used in the transmit power control circuit U542
4.4.4 FINAL (Q541), POWER CONTROL (U542)
Q541 is biased for Class C operation. The output is matched to the low-pass filter by L541, C552, and several
capacitors. The supply voltage is isolated from RF by ferrite bead EPS41.
Power control is provided by U542. The 5.5V transmit supply is passed by U542 to power adjust R542. The
other end of R542 is the rectified -5V from Q901. This negative voltage is required when low power is used to
pinch off Q54l to the required output.
The low-pass filter consists of L561, C561. L562. C562. L563, C563 and L564. The filter attenuates spurious
frequencies occurring above the transmit frequency band. The transmit signal is then fed through the antenna
switch to antenna jack 1501.
4.4.5 ANTENNA SWITCH (CR561. CR562)
The antenna switching circuit switches the antenna to the receiver in the receive mode and the transmitter in
the transmit mode. In the transmit mode, +7.5V is applied to L565 and current flows thmugh diode CR561. L566,
diode CR562. and R562IR5634 When a diode is forward biased, it presents a low impedance to the RF signal;
conversely, when it is reverse biased (or not conducting). it presents a high impedance (small capacitance).
Therefore, when CR561 is forward biased, the transmit signal has a low-impedance path to the antenna through
coupling capacitor C568.
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CIRCUIT DESCRIPTION
C567, L566, and C570 form a discrete quarter— wave line When CR561 is fonvard biased, this quaner—wave
line is eflectively AC grounded on one end by C570. When a quarter-wave line is gmunded on one end, the other
end presents a high impedance tn the quarter-wave frequency This blocks the transmit signal from the receiver.
C569 matches the antenna to 50 ohms in msmit and receive.
In the receive mode, no power is applied to L565, so all the diodes are "oft". The receive signal then has a
high-impedance path into the transmitter and a low-impedance path into the receiver because the quarter-wave line .
is not grounded.
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SECTION 5
SERVICING
5.1 GENERAL
5.1.1 PERIODIC CHECKS
This transceiver should be put on a regular maintenance schedule and an accurate performance record
maintained. Important checks are receiver sensitivity and transmitter frequency, modulation, and power output. A
procedure for these and other tests is located in Section 6. It is recommended that transceiver performance be
checked annually even though periodic checks are not required by the FCC. During the first year, make an
additional check or two to ensure no TCXO frequency drifiing has occurred.
5.1.2 SURFACE-MOUNTED COMPONENTS
A large number of the components used on the transceiver board are the surface-mounted type. Since these
components are relatively small in size and are soldered directly to the PC board, care must be used when they are
replaced to prevent damage to the component or PC board. Surface-mounted components should not be reused
because they may be damaged by the unsoldering process.
5.1.3 SCIEMATIC DIAGRAMS AND COMPONENT LAYOUTS
Schematic diagrams and component layouts of the PC boards used in this transceiver are located in Section 8.
A component locator guide is also provided to aid in component location.
5.1.4 REPLACEMENT PARTS LIST
A replacement parts list with all the parts used in this transceiver is located in Section 7. Parts are listed alpha-
numerically according to designator. For information on ordering parts, refer to Section 1.8.
5.1.5 TCXO MODULE NOT SERVICEABLE
The il.5 PPM TCXO module is not field serviceable. Part changes require a factory recalibration to ensure
that the oscillator stays within its :l:l.5 PPM tolerance.
5.2 SYNTHESIZER SERVICING
5.2.1 INTRODUCTION
When there is a synthesizer malfunction, the VCO is not locked on frequency. When an unlocked VCO is
detected by the lock detector circuit. U801, pin 18 goes low (OV),
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Part No. 001-3474-002 A Dam Compaq
SERVICING
NOTE: The user-supplied circuitry must disable the transmitter and receiver when an aut-of-lock condition is A
indicated
When the VCO is unlocked. the fit and fV inputs to the phase detector are usually not in phase (see Section
4.1.2). The phase detector in U801 then causes the VCO control voltage to go to the high or low end of its
operating range, This in turn causes the VCO to oscillate at the high or low end of its frequency range. -
As shown in Figure 441, a loop is formed by VCO 0850. amplifier 0851/0852, and the RF [N of U801.
Therefore, if any of these components begin to malfunction, improper signals appear throughout the loop. '
However, correct operation of the counters can still be verified by measuring the input and output frequencies to
check the divide number.
Proceed as follows to check the synthesizer l/O signals to detemrine if it is operating properly.
5.2.2 REFERENCE OSCILLATOR
Check the signal at U801, pin 8. It should be 17.5 MHz at a level of approximately 1.5V P—P. If the TCXO
module is defective. it is not serviceable and must be replaced with a new module as described in Section 5.1.5.
5.2.3 VCO
Oumut Level
The output level of Q853 can be measured with an RF voltmeter or some other type of high impedance meter. "\
The minimum level after a power splitter at R851 should be -10 dBm.
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Check the DC voltage at C815 with a channel near the center of the band If the VCO is locked on frequency,
this should be a steady DC voltage near 3V. If it is not locked on frequency, it should be near the lower or upper
end of its range (UV or 5.5V).
mm! quency
Check the VCO frequency at R851. If the VCO is locked on frequency, it should be stable on the transmit
channel frequency. If the VCO is not locked on frequency. the VCO control voltage is probably near CV or 5.5V.
5.2.4 SYNTl-[ESIZER(U801)
Lock Detector
When the VCO is locked on frequency, the lock detect output on JZOl, pin 7 should be high.
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SERVICING
5.3 RECEIVER SERVICING
To isolate a receiver problem to a specific section, refer to the troubleshooting flowchart in Figure 5—1. Tests
referenced in the flowchart are described in the following information
NOTE: Supply voltages are provided by the user.
5.3.1 SUPPLY VOLTAGES AND CURRENT
Measure the supply voltages on the following pins at interface connector J201:
Pin 4 - 5.0V DC Receive
Pin 5 - 5.0V DC
Place a DC ammeter in the supply line to the transceiver and the following maximum currents should be
measured:
Pin4-10mA
PinS-SOmA
5.3.2 MIXER/DETECTOR (U201)
Data Output
Using a 01 pl: coupling capacitor. inject at U241, pin 16. a 52.95 MHz. 1 mV signal, modulated with 1 kHz
at t 3 kHz deviation. The audio output level at U241, pin 9 should be approximawa 400 mV RMS.
The data output on 1201, pin 13 should be 600 mV to 1.2V P-P or 212 mV to 424 mV RMS with the
preceding injection signal.
RSSI Output
The RSSI output on 1201, pin 12 should be greater than 100 mV at 12 dB SINAD and less than 2.5V with 1
mV input. If either of the preceding measurements is not correct, there may be a problem with 0241.
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5.3.3 RF AMPLlFlER (0201) AND FEST MIXER (0221)
Refer to the schematic diagram for signal levels and test points for measuring levels.
5.3.4 RF AND IF AMPLH-"IERS. FIRST MIXER
Check the DC voltages shown on the schematic diagram. If they are normal, inject a signal at the input and
output of each stage using a .01 uF coupling capacitor. If the stage is producing gain, the injection level on the
input of a stage should be less than that required on the output to produce the same SINAD at the receive output.
5.4 TRANSMITTER SERVICING
5.4.1 SUPPLY VOLTAGES AND CURRENT
Measure the supply voltages on the following pins of interface connector 1201:
5—4
bIOhfigann" Pan No.001-3474-002
A Dumrdx’n CM
SERVICING
Pin 2 - 7.5V DC
Pin 3 — 7.5V DC
Pin 4 - 0.0V DC (while mmitting)
Pin 5 - 5.0V DC
Pin 6 - 2.5V DC Transmit lnll‘SV P-P max
Place a DC ammeter in the supply line to ch; msceiver and the following maximum currents should be
_ measured:
Pin 2 - 650 mA
Pin 3 - 250 mA
Pin 5 — 12 mA
mu m
SECTM 5.A
r‘ CWK HEW“
(“Elli-IN 5.14)
mm Am
cNtCK l! SVAGB AY Jim, PIN K
cum mo
Figure 5-2 TRANSMITTER SERVICING FLOWCHART
5—5 mm TElEMITIV_
P.“ No. 0014474002 bjohnson
Away-m
SERVICING
This page intentionally left blank
Lj()h|wm numsrfi_ 5-6
A c A : PartNu. 001-3474-002
SECTION 6
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
6.1 GENERAL
Receiver or transmitter alignment my be necessary if repairs are made that could affect tuning. Alignment
points diagrams are located in Figure 6-3 or component layouts are located in Section B.
Fabricate test cables by referring to Section 2.2. Interfacing with Data Equipment This cable should include
power and ground, a transmit keying switch that shons the keying line to ground, data input and data output. The
test setup must apply the various supply voltages and load the synthesizer with channel information.
6.2 DL3474 TRANSCEIVER ONLY
6.2.1 FREQUENCY AND CONTROL LINE VOLTAGE CHECK
1. Connect the test setup shown in Figure 6-1. Set the power supply for +7.5V DC.
2. Load the synthesizer with the channel frequency (see Section 3.2).
3. Connect a DC voltmeter at the junction of R808/C815 to measure the VCO control line voltage for a meter
reading of 20.50 — 54.90V DC (see Figure 63).
4. Key the transmitter
5, Measure the VCO control line voltage for a meter reading of 20.75 - $5.00V DC
6. Unkey the transmitter.
6.2.2 2W TRANSMITI’ER POWER ALlGNMENT
1. Connect the test setup shown in Figure 6-1. A DC ammeter capable of measuring up to 1.5A should be installed
in the supply line.
2. Load the synthesizer with the center channel frequency.
3. Key the transmitter and make sure that the supply voltage at the RF board is 7.5V.
(Do not transmit for extended periods.)
4. Adjust C553 counterclockwise for minimum current.
5. Connect a voltmeter to the junction of R542/R543.
6" blohfifi‘fi'
Part No. 001-3474—002 A Damn-db Company
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
,,—\
6. Adjust R542 clockwise for 2.30V DC (+OI-U.1V DC).
7. Readjust C553 counterclockwise for minimum cum-.nt. -
8. Tune C527 clockwise for maximum power.
9. Tune C553 clockwise for 2.0W (10. IW). Current should be less than 900 mA. (Power output should be 1.6-2.4W
and current less than 900 am from 403—512 MHz.)
10. Monitor the frequency with a frequency counter and adjust TCXO (YSOI) for the channel frequency 1100 Hz.
ml’.‘ m
, 2} M...
._, $1.2. 3m mm“:-
- [E
"\
Figure 6-1 TRANSMITTER TEST SETUP
6.2.3 LOW POWER ALIGNMENT
1. Connect the test setup shown in Figure 6~l.
2. Load the synthesizer with the center channel frequency.
3. Connect a voltmeter to the junction of R5421R543.
4 Adjust R542 clockwise for -1 .5V DC (iOJV DC). ‘
5. Tune C527 clockwise for maximum power.
~\
ado—“$3“ “2
A W Camry Part No. 001-3474-002
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
9.
Tune C553 clockwise for minimum power.
Adjust R542 for the required power level.
Tune C527 for power balance at frequencies which are as close as possible to 1:5 MHz from the center of the
channel frequency.
Re-adjust R542 for the power level required if necessary.
10. Monitor the frequency with a frequency counter and adjust TCXO (Y801) for the channel frequency 1100 Hz.
6.24 MODULATION FLATN'ESS ALIGNMENT
1.
2.
8.
9.
Inject a 220 Hz square-wave tone at approximately 0.35V P-P, biased at 2.5V DC on 1201, pin 6.
Tmnsmit into the modulation analyzer and observe modulation output on the oscilloscope. Set the modulation
analyzer high pass filtering off and no less than a 15 kHz low pass filter.
Adjust R810 for a flat square-wave on the oscilloscope.
Inject a 1 kHz sine—wave on 1201, pin 6, biased at 2.5V DC. at the level below according to the bandwidth:
0.200V RMS for 12.5 kHz BW (-X10 Radios)
0.330V RMS for 20.0 kHz BW (-X20 Radios)
0.400V RMS for 25.0 kHz BW (-X30 Radios)
Switch on TX Modulation. Set the modulation analyzer for 3 kHz low pass filtering.
The transmit deviation should measure between:
ill/$1.9 kHz for 12.5 kHz BW (-X10 Radios)
i1.9lfi.0 kHz for 20.0 kHz BW (-X20 Radios)
fiA/flj kHz for 310 kHz BW (-X30 Radios)
Set a 0 dB reference on the Audio Analyzer.
Input a 100 Hz sine-wave. The level should be within il.5 dB of the 1 kHz reference.
Remove transmit modulation and unkey the transmitten
10.Connect a DC voltmeter at the junction of R807IR855.
1] .Adjust R855 to 2.10V DC (10.05V DC).
6’3 Llohifiii‘r'i
Part No. 001434744102 A M Comm
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
cmwcnms
srmcz mill"
ml'lun
MALVZER
Figure 6-2 RECEIVER TEST SETUP
6.2.5 RECEIVER ALIGNMENT q
C A U T I 0 N: Do not key the transmitter with the generator connected! Severe generator damage may result.
1. Connect the test setup shown in Figure 6-2. Adjust the power supply for +7.5V DC.
2. Measure the receive current drain. (Typically current should be <80 mA.)
3, Preset tuning slugs of L222/L224 to the full clockwise position (slug in all the way).
4. Preset C232 to center position (slot in-line with axis of part).
5. Readjust L224 counterclockwise 2 turns.
6.2.6 {F AND AUDIO ADJUSTMENTS
1. Load the synthesizer with the channel frequency.
2. Set the RF signal generator for this frequency with a 1 kHz tone (modulated output shown below) at a level of
-47 dBm (1000 11V) and inject into 1501.
1.5 kHz deviation (-X10 12.5 kHz BW Radio)
2.4 kHz deviation (-X20 20.0 kHz BW Radio)
3.0 kHz deviation (-X30 25.0 kHz BW Radio)
bjoh_fi_§8i=i “
A w aw Pan No. oer-3474002
ALIGNNIENT PROCEDURE AND PERFORMANCE TESTS
NOTE: Maintain these deviation levels throughout the test when measuring AC levels. SINAD and
% distortion.
3. Adjust L242 for 2.5V DC (10.05V DC) at the receive audio output.
4, Set the RF signal generator level to -105 dBm, “unmodulated”.
5 Set the generator frequency 3 kHz below channel center (-X10) or 5 kHz below channel center (—X20/—X30)4
6. Adjust C232, then L222 for peak RSSI voltage.
NOTE: Use 2V scale on DVMA
7. Set the RF signal generator frequency hack to channel center at -47 dBm with standard deviation level.
8. Adjust L224 for minimum distortion.
9. Set the RF signal generator to -105 dBm, “unmodulaled”.
10.Adjust L222 for peak RSSI voltage.
NOTE: Use 2Vscale on DVM.
11 Adjust deviation to the level in Step 2. Record the RMS Voltage level RMS, (Typically 300 mV $50
mV.)
12.Record the percent distortion %. (Typically <3%.)
13.Adjust the RF input level until 12 dB SINAD is measured. (Typically <0.45 uV).
14. Adjust the generatorRF level to -120 dBm and measure DC (RSSI) voltage on 1201, pin 12. (Typically S 0.90V
DC.)
15,Adjust the generator RF level to -60 dBm and measure DC (RSSI) voltage on 1201. pin 12. (Typically 2 2.40V
Dcl)
6’5 blow—E
Pm No. urn-347+“): A M Company
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
%C815/R808
R543/R542
R509
L222
cm
M L224
RBO7/R855 J
HJZF
|08k
W016
fill—hfié‘ifi'i
40mm Company
Figure 6-3 ALIGNMENT POINTS DIAGRAM
6-6
Pan N04 001-3474—002
SECTION 7
PARTS LIST
Part No. 001 -3474~0(Y2
023-3474-515
DESCRIPTION
msman 450-466 vcomg
68pF 590 NPO 0603
GBpF 590 NPO 0603
63.3? 590 NPO 0603
68pF 590 NPO 0603
sap]: 590 NPO 0603
6sp1= 590 NPO 0603
68pF 590 no 0603
GBpF 590 NPO 0603
6BpF 590 NPO 0603
map? 590 no 0603
63p1= 590 we 0603
sapr- 590 NPO 0603
6BpF 590 NPO 0603
LOUFD 16V SMD TANTRL
6813]: 5‘17 NPO 0603
DIM]: X7R K 0603 CHPR
IAOU'FD 16V SMD TANTRL
GBpF 590 NPO 0603
68pF 591: NPO 0603
LOUFD 16V SMD TANT RL
68pF 591, NPO 0603
mm X7R K 0603 CHPR
LOUFD 16V SMD TANT RL
68pF 590 NPO 0603
68pF 5% NPO 0603
68pF 590 NPO 0603
lOpF +I-.1pF NPO 0603
4.7pF +/—.1pF mo 0603
68pF 591: NPO 0603
63pF 5917 NFC 0603
68pF 5% NPO 0603
mm X71! K 0603 CHPR
3.9pf +l-.lpF NPO 0603
3.0pf +l-.lpF NPO 0603
.01MF X“! K 0603 CHPR
.01MF X71! K 0603 CHPR
s.2pl= +1».1pF NPO 0603
PART
NUMBER
023-3474—540
6 l 0-3674-680
610-3674-680
6103674680
610-3674-680
610-3674-680
6103674-680
610-3674-680
610-3674-680
6103674680
6103674-680
610-3674—680
610-3674-680
6103674-680
610-26254 109
6103674-680
61 0-3675- 103
6] 0-2675- 109
61 0-3674-680
610-3674—680
610-2615- 109
610-3674-680
6103675403
610-265-109
6 1 0-3674-680
610-3674-680
6 10-3674-630
610-3673- 100
6 10-3673—479
610-3674-680
6103674680
610-3674-680
610-3675-103
610-3673—399
610-3673-309
610-3675-103
610-3675-103
610—3673-829
bjohfi‘fifi
ADna-mdia (gm-puny
PARTS LIST
C 506
C 507
C 508
C 509
C 510
C 511
C 520
C 521
C 522
C 523
C 524
C 525
filoh_fi_§3‘fi
Awaw
023-3474-515
DESCRIPTION
.01M]-' X7R K 0603 CHPR
.01M]= X71! K 0603 CHPR
.01MF X7R K 0603 CHPR
1.5-5PF SMD CERAMIC
.0|MF X7R K 0603 CHIPR
.01MF X7R K 0603 CHPR
.1UFD X7R] 1206 RL
AIUFD X7R J 1206 RL
.01MF X7R K 0603 CHPR
1.0UFD 16V SMD TANTRL
.01MI-‘ X7R K 0603 CHPR
.01MF X7R K 0603 CHPR
27pF 5’X7 NPO 0603
68pF 570 NPO 0603
.1UFD X7R I 1206 RL
.1UFD X7R I 1206 RL
68pF 590 NPO 0603
8.2pF +l-11pF NPO 0603
GBpF 5917 NPO 0603
3.3pF +I-.1pF NPO 0603
68pF 595 NYC 0603
1.0UFD 16V SMD TANT RL
3.3pF +/-.IpF NPO 0603
.01MF X7R K0603 CHPR
101MF X7R K 0603 CHPR
AOIMF 1011 K 0603 CHPR
.01MF X7R K 0603 CHPR
SZpF 5% NPO 0603
6.8pF +/-.1pF NPO 0603
82pF 591; NPO 0603
.1UFD X7R J 1206 RL
68pF 5957 NFC! 0603
6.8pF +/-.1pI-'NPO 0603
68pF 593 NPO 0603
470pF 5% NPO 0603
.01MF X7R K 0603 CHPR
68pF see N'PO 0603
68pF 595, NPO 0603
68pF 591; NPO 0603
68pF 5917 NFC 0603
120pF 5% NPO 0603
3.9pf +/-.1pF NPO 0603
ZZpF 5% NPO 0603
68pF 5% NPO 0603
.01MF X7R K0603 CHPR
68pF 595 NPO 0603
470pF 591: NPO 0603
27pF 535 NPO 0603
7-2
PART
NUMBER
6 1 0-3675~ 103
6 10~3675- 1 03
6 10-3675~ 1 03
6121 602-001
610-3675-103
610-3675-103
6 10-3609» 104
6 10»3609- 1 04
610-3675- 103
6 1 0-2675- 109
610~3675- 103
610-3675-103
610—3674-270
610-3674—680
6105609- 104
610-3609-104
6 10-3674—680
610-3673-829
610-3674-680
6 1 0-3673-339
610-3674»630
61 0-2625- 1 09
610-3673-339
610-3675-103
61 0-367} 103
610-3675-103
610-3675-103
6103674-820
GIG-3673689
610-3674-820
610-3609- 104
610-3674-680
610-3673-689
610-3674-680
610-3674-47 1
610-3675- 103
6 1 0-3674-680
610-3674—680
610-3674-680
6104674—680
6 10-3674~ 1 2 1
6 10—3673—399
610-3674-220
610-3674-680
61 0-3675- 1 03
610-3674‘630
610-3674—47]
610—3674-270
Pan N04 001-3474-002
PARTS LIST
Pan No. 00143474—002
SYMBOL
NUMBER
C 526
C 527
C 528
C 541
C 542
C 546
C 547
C 548
C 549
C 550
C 551
C 552
C 553
C 554
C 555
C 560
C 561
C 562
C 563
C 564
C 565
C 567
C 568
C 569
C 570
C 571
C 572
C 573
C 801
C 808
C 810
C 811
C 812
C 813
C 814
C 815
C 817
C 818
C 819
C 831
C 832
023-3474-515
DESCRIPTION
IBPFN'P010805 CH? RL (L
25-10PF SMD CERAMIC
lOpF +I-.1pF NPO 0603
6pr 596 NPO 0603
470pF S‘k NPO 0603
saw 5% NPO 0603
68pF S‘iz NPO 0603
LOUFD 16V SMD TANTRL
.01MF X7R K 0603 CHPR
33PF NPO! 0805 CH? R!- (L
15PF NPO 1 0805CHP R]- (U)
3A9PF NPO 1 OBOSCHP RL
2.5-10PF SMD CERAMIC
68pF 5% NPO 0603
saw 570 NPO 0603
22pF 5% NPO 0603
5.6PF NPO 1 0805CHP R1. (L
6.2PF NPO 10805 CHP R].
7.5PF NPO 10805 CHP R].
101MF X7R K 0603 CHPR
68|7F 5% NPO 0603
5.6PF NPO 1 0805CHP RL (1.
47pF 5% NPO 0603
5.1PF NPO 10805 Clfl’ RL
asp]: 595 NPO 0603
saw 5% NPO 0603
.01MF X7R K 0603 CHPR
1.0UFD 16V SMD TANTRL
.01MF X7R K 0603 CHPR
.01MF X7R K 0603 CHPR
.01MF X7R K 0603 CHPR
3.3pF +/-.1pF NPO 0603
.01MF X7R K 0603 CHPR
68pF see me 0603
.01MF X7R K 0603 CHPR
68pF 5% NPO 0603
100PF NPO 1 OSOSCHP R1- (L
AIUFD X7R 1 1206 RL
.OOIuF 10% X7R 0603
“1471117 X7R K 0805 CIR (L
.001uF 10917 X7R 0603
1.0UFD 16V SMD TANT RL
.0047UF X7R K 0805 011 (L
68pF 5% NPO 0603
LOUFD 16V SMD TANT R].
39171 +I-.1pF NPO 0603
.01MF X7R K 0603 CHPR
.01MF X71! K 0603 CHPR
7-3
PART
NUMBER
610-3601480
61246024302
61046734“!
610-3674-680
6104674471
610-3674—680
6103674680
6104625409
6108675403
6103601830
6103601450
610-3601-399
6124- 1602-002
610-3674-680
610-3674-330
610-3670-220
610-3601~569
610-3601-629
610-3601-759
610-3675-103
610~3674—630
610-3601-569
filo-3674470
610-3601-519
6104674330
610-36744680
610-3675-103
610465409
610-3675-103
610-3675-103
filo-3675403
6103673339
610»3675- 103
6104674680
6103675403
610—3674-680
6104601401
6104609404
610—3675-102
610-3605-472
610-3675-102
6102615409
610-3605—472
610-3674-680
6102625409
610-3673-399
6103675405
610-3675-103
£19 "fison
TD“- - Cam
PARTS LIST
023-3474-515
SYMBOL PART
NUMBER DESCRMION NUMBER
c 333 GSpF 531, N10 0603 6103674630
c 334 4.71111) 1ov SMD TANT RL 610-2624-479
c 335 0114}: x73 K 0603 1211111 6103675403
c 336 01103 x73 11 0603 can 6103675403
c 1137 0110: x73 K 0603 c111>3 6103675403
1: 333 681117917 1110 0603 610-3674-680
c 339 0111113 x70 16 0603 can 6103675403
c 340 0114? x73 K 0603 121-1111 6103675403
1: 341 63111- 536 1110 0603 6103674630
c 342 011411= x73 11 0603 can 6103675403
c 344 10111313 16V SMD TANT RL 6102625409
c 345 .011v11= x73 11 0603 CHPR 6103675403
c 846 63111: 591, 1110 0603 610-3674-680
c 347 011113 x73 K 0603 can 610-3675-103
c 343 68pF 591 1110 0603 610-3674-680
c 349 68pF 591 NPO 0603 6103674630
c 350 68pF 591 NPO 0603 610-3674»680
c 351 6BpF 5% 1110 0603 610-3674-680
c 352 6BpF 596 N'PO 0603 610-3674—680
c 355 .011v11= x71; K 0603 can 6103675403
CR 201 swrmmNG moms 501.23 623-1504-002
CR 561 sow PIN sw 1310135 TIRL 6234500001
CR 562 sor 1111 sw mom; TIRL 623. 15044101
CR 331 DUAL sw 10101313 som 623- 15044123
CR 332 1313535 son 323 VARACTOR 623-5005-022
131 200 141111 can CRY 1111 111510 0100345230
1:1 501 10211111113 HEAD 31/11) 617-7503-001
131 541 10211111113 HEAD 51/113 617-2503-001
1 201 141 SGL ROW 11cm 11311111 6154110214
1 501 5711 71511111 pcs 615-3013-030
L 201 111mm- LL2012 13.211 0305 642-9003-826
L 202 22 1111310305 5141) 1076 111mm 6429003227
L 222 1+/-63w11 VAR. 1111). 51/114 6424012015
L 223 0.32 Ml-IY s1v11> 1111311131011 642-9001-828
L 224 1+I-6%UH VAR. 1111). SMM 642-1012-015
L 242 QUAD con. 680UH/I180PF SM 642-5102-001
L 301 10 1111110305 SMD 1031 mum 6429003407
L 302 mnucr LL2012 1=1511 0305 s 6429003457
L 401 .100 111111 SMD lNDUCl'OR 6429001403
L 402 1100 111111 511113 INDUCI'OR 6429001403
L 404 1.0 UHY 51/11) 1110001011 6429001409
1. 501 INDUCT LL20l2 FISN 0305 3 6429003457
L 502 1.0 UHY SMD 1111211131011 6429001409
L 503 INDUCT LL2012 11511 0305 s 642-9003-157
L 521 10143061 SMD AlR com; 1 6420030010
L 522 111131101 LL2012 13113 0305 3 6429003336
L 541 51 13.51.11 5141) AIR com 111 6420030005
L 561 51" 13.5111 SMD Am CORE 111 6420030005
filo—”350m“ M
A w aw Pan No. 0013474002
PARTS LIST
Part No. 001-3474-002
SYMBOL
NUMBER
1. 562
L 563
L 564
L 555
L 566
1. 801
L 851
MP 301
MP 802
MP 803
00804
MP 806
PCOOI
Q 101
Q 102
Q 103
Q 131
Q 201
Q 221
Q 222
Q 301
Q 401
Q 501
Q 521
Q 541
Q 331
Q 332
Q 833
Q 834
Q 351
R 120
R 131
R 201
R 202
R 203
R 204
R 222
R 223
R 223
R 22.5
R 226
R 228
R 229
R 230
R 241
R 242
R 243
R 261
023-3474-515
DESCRIPTION
9T 355ml] SMD AIR CORE IN
9T 35.5111! SMD AIR CORE IN
ST 18.5n11 SMD AIR CORE IN
1.0 UHY SMD INDUCTOR
12,511H SM AIR CORE IND (L
39 NIP/0805 SMD 1011 INDUCI‘
1.0 UHY SMD INDUC'IOR
CAN-VCO 3474
TOP SHIELD 3474 XMlT
SPHELD 3474 BOTTOM XMH‘
3474 SHIELD BOTTOM SYNTH
XTAL FLTR SHIELD 3472
PCB DL 3474 MAIN (MULG)
NPN TRANS SOT 73 80V
DIG TRANS DCI'l l4WK 523
N'PN TRANS SOT 73 80V
NPN TRANS SOT 23 80V
MMBR5031 SOTZSNPN XSTR
VHF/UHF AMP SOT -23
SOT SI N-CHAN JFEI'
IV (NPN) 85633 SOTZB R25
VHF/UHF AMP SOT-23
IV (NPN) 85633 50173 R25
NPN SOS .2-ZGHZ XS'I'R
RF FET TRANS
NPN TRANS SOT 23 30V
NPN SOD MSD1819 GEN PU'RP
VIE/UHF AMP SOT-23
DIG TRANS DCI‘IIAWK $23
BIPOLAR MMIC. SOT 143
100k OHMS J 063W 0603 CHI
100k OHMS I 063W 0603 CHI
47 OHMS I 063W 0603 CHIP
2.7K OHM I 063W 0603 CHIP
750 OHM RES I 063W 0603 C
330 OHMS I 063W 0603 CHIP
330 OI'IMS J 063W 0603 CHIP
22K OHMS J 063W 0603 CHIP
IK OHM I 063W 0603 CHIP
15k OHMS J 063W 0603 CHIP
470 OHMS I 063W 0603 CHIP
10 OI-WIS I 063W 0603 CHIP
330 OHMS I 063W 0603 CHIP
2.7K OHM I 063W 0603 CHE
62K OHMS I 063W 0603 CHIP
27K OHMS I 063W 0603 CHIP
270 OHMS I 063W 0603 CHIP
200k OHMS I 063W 0603 CHI
7-5
PART
NUMBER
642413304309
642-0030-009
642-0030-005
642-9001 - 109
642-0030-004
642-9003-397
642-9001 - 1 09
017-2225-751
0 I 7-23-76 1
017-2225-762
01 7-2215-763
017-2225-699
035-3474-030
676-0003-6 1 6
676-0003-62 l
676-0003-616
676-0003-616
676-0003-606
676-0003-634
676-1XIOS-OIQ
676-0003-636
676-0003-634
676-0003-636
676-0003-604
6760006450
676-0003-616
67600 1 3-70 I
676-0003-634
676-0003-621
676-0003-640
669-0155- 1 04
669-0155» 104
669-0155-470
669-0155—272
669-0155-75 1
669-01 55-331
669—01 55-33 1
669-0155-223
669—0155- 102
669-01 55- 1 53
669-0155-47 1
669-0155- 100
669-0 155-33 1
669-0155-272
669-0155-623
669-0155-273
669-0155-27 1
669-0 1 55-204
bjo_h°r‘i‘§8‘i"1
A Data-rude 0mm
PARTS LIST
023-3474-515
SYMBOL PART
NUMBER ”memo” NUMBER
R 262 100k OHMS J 063W 0603 CHI 6690155404
R 263 10k OHMS J 063W 0603 CHIP 6690155003
R 264 18k OHMS J 063W 0603 CHIP 6690155483
R 265 10 OHMS 1 063W 0603 CHIP 66943155400
R 267 12x OHMSJ 063W 0603 CHIP 669-0155-123
R 268 10x OHMS J 063W 0603 CHIP 669-0155-103
R 269 10K OHMS J 063W 0603 CHIP 669-0155-I03
R 270 10K OHMS 1 063W 0603 CHIP 669-0155-103
R 271 10K OHMS I 063W 0603 CHIP 669-0155-I03
R 301 3.3K OHM 1 063W 0603 CHIP 6690155032
R 302 1.31: OHMS J 063W 0603 CHI 669-0155-182
R 303 130 OHMS J 063W 0603 CHIP 669-0155-181
R 304 470 OHMS J 063W 0603 CHIP 6690155471
R 401 10 OHMS J 063W 0603 CHIP 669—0155-100
R 402 15k OHMS J 063W 0603 CHIP 669-0155453
R 403 4.7K OHM I 063W 0603 CHIP 669-0155-472
R 404 680 OHMS J 063W 0603 CHIP 6690155031
R 501 2.2K OHMS J 063W 0603 CHI 669-0155-222
R 502 1316 OHMS 1063W 0603 CHI 6690155182
R 503 10 OHMS J 063W 0603 CHIP 6690155400
R 504 560 OHMS J 063W 0603 CHIP 6690155561
R 506 100 OHMS 1 063W 0603 CHIP 669—0155-101
R 503 mo OHM J 0805 CHIP/R 6690105001
R 509 470 OHM SMD TRIMMER 6620130471
R 521 1x OHM J 063W 0603 CHIP 669-0155-102
R 522 150 OHMS J 063W 0603 CHIP 669-0155-151
R 524 220 OHMS I 063W 0603 CHIP 6690155021
R 541 10 OHMS J 063W 0603 CHIP 6690155400
R 542 1016 OHM SMD TRIMMER 662-0130-103
R 543 10K OHMS J 063W 0603 CHIP 6690155403
R 546 47 OHMS J 063W 0603 CHIP 669-0155-470
R 550 10 OHMS J 063W 0603 CHIP 669-0155-100
R 551 10 OHMS J 063W 0603 CHIP 6690155400
R 562 RES 270R 0.75W +I-5% (1.07 669-0135-271
R 564 47x OI-[MS 1 063W 0603 CHIP 669-0155—473
R 801 10K OHMS J 063W 0603 CHIP 6690155403
R 802 1016 OHMS I 063W 0603 CHIP 6690155103
R 304 10 01-015 J 063W 0603 CHIP 6690155400
R 005 27K OHMS I 063W 0603 CHIP 669—0155-273
R 806 12K OHMSJ 063W 0603 CHIP 669-0155-123
R 307 4.7K OHM J 063W 0603 CHIP 669-0155-472
R 303 18k OHMS J 063W 0603 CHIP 669-0155-183
R 310 220K OHM SMD TRIMMER 662—0130-224
R 81] 27K OHMS J 063W 0603 CHIP 6690155073
R 312 10K OHMS I 063W 0603 CHIP 669-0155—103
R 813 100k OHMS J 063W 0603 CHI 6690155004
R s 14 20 OHM J 063W 0603 CHIP 6690155000
R 617 4.7K OHM J 063W 0603 CHIP 669-0155-472
Iglohfififi'
A Dammdio Cow Part No. 001-3474-002
PARTS LIST
Part No. 001-3474—002
SYMBOL
NUMBER
R 831
R 834
R 835
R 836
R 838
C 850
C 851
C 852
C 853
C 854
C 855
023-3474-515
DESCRIPTION
10K OHMS J 063W 0603 CHIP
10K OHMS J 063W 0603 CHIP
100 OHMS J 063W 0603 CHH’
4.7K OHM J 063W 0603 CHIP
100 OHMS J 063W 0603 CHIP
1K OHM J 063W 0603 CHIP
22K OHMS J 063W 0603 CHIP
15k OHMS J 063W 0603 CHIP
”(OHM J 063W 0603 CHIP
680 OHMS J 063W 0603 CHE>
18 01-MSJO63W 0603 CHIP
18 OHMS J 063W 0603 CHIP
18 OHMS J 063W 0603 CHIP
1.5K OHM J 063W 0603 CHIP
150 OHMS I 063W D603 CHIP
39 OHM J 0603 CHE/R
150 OHMS J 063W 0603 CHIP
82 OHZMS 547 063W 0603 SMD
100K SMD TRIMMER
4.7K OI'M J 063W 0603 CHIP
4,7K OHM J 063W 0603 CHH>
4.7K OHM J 063W 0603 CHIP
100 OHMS J 063W 0603 CHIP
SCHEMATIC DL 3474 MAW
SCHEMATIC DL 3474 MAIN
ASSEMBLY DL 3474 MAIN BD
SLDR 62/3612 H20 CLEAN
5.5V REG 50-6
5.5V REG 50-6
DBL BAL MDCER MOT-1-04
FM 1F MC3371D SO~16
MC33172D SOS OP AMP
FRACTIONAL-N SYNTHESIER
17.5 MHZ TCXO +I-1.5 PPM
SMDHELFLTR459MHZSPO
SMDHELHIRHQMHZBPO
5295111112 4? SKI-12 BW
450 KHZ, 9 KHZ BW CERAMIC
450 KHZ. 9 KHZ 13W CERAMIC
{IE-3474542
68pF sea NPO 0603
68pF 595 NPO 0603
8.2pF +/-.1pF NPO 0603
9.1pf +/-.1pF NPO 0603
IOOpF 595 NPO 0503
68pF s% NPO 0603
7-7
PART
NUMBER
669-0155- 103
669-0155- 103
669-0155- 101
669-01 55—472
669-01 55 1 01
669—01 55- 102
669-0155-223
669—0155- 153
669—0155- 1 O2
669-0155-68 1
669-0155- 1 80
66943155- 1 80
669-0155- 1 80
669-0155- 1 52
669-0155- 1 5 1
669-0155-390
669-0155- 15 1
669-0155-820
662-01 30- 1 04
669—01 55-472
669-0155-472
66943155472
669—0155- 1 01
075-3474-030
03-3474—030
02744744130
684-1606—062
644-2603-086
644-2603-036
644~0007-014
644-2002—031
644—2019-017
64449544127
61 8-7009-521
632— 1 005-044
632-1005-044
632-0009-01 1
6324004015
632-2004-015
610-3674-680
6103674680
610-367 3-829
610-3673-919
610-3674—101
610—3674—680
filo—Wm
A arm-Maw
PARTS LIST
SYMBOL
NUMBER
c 856
c 858
c 359
c 861
c 862
c 863
c 864
c 865
c 866
c 867
c 868
c 370
c 871
c 873
c 874
c 876
c 877
c 378
CR 850
CR 851
CR 852
CR 853
CR 854
CR 355
CR 856
L 851
L 852
L 853
L 854
L 855
L 856
Q 850
Q 851
Q 852
Q 853
R 851
R 852
R 853
R 854
R 1156
R 857
R 858
R 862
863
864
865
866
867
seamen»
filo—h'i‘i‘fifi‘i’i
A My am
023-3474-515
DESCRIPTION
2.7pF +I—.1pFNPO 0600
68pF 596 NPO 0603
7.5pF +I-.lpF NPO 0603
8-20F +/-.lpF NPO 0603
6.8pF +I-.lpF N'PO 0603
68pF 5911 NFC 0603
pr +/-.1pF NPO 0603
68pF 596 NPO 0603
68pF 5917 NPO 0603
68p1= 5% NPO 0603
15p1= +/-.1pF NPO 0603
lpF +I-.1pF NPO 0603
1001513 571: NPO 0603
lOOpF 596 NPO 0603
3.3p1= +/-.IpF NPO 0603
8.2pF +I-. lpF NPO 0603
lpF +I-.lpF NPO 0603
10131= NPO 1 0305 cm RL
SOT pm sw DIODE T/RL
1313535 son 323 VARACTOR
VAR DIODE 500m 1313515
VAR 010013 800123 138515
1313535 SOD 323 VARACI‘OR
1313535 son 323 VARACI‘OR
1313535 SOD 323 VARACI‘OR
150 N'HYOBOS SMD 1070 IN
150 myosos SMD 1096 01
22 NHYOSOS SMD 10% IND
150 NHYosos SMD 10% m
runner LL2012 FSGN 080
22 1111110305 SMD 1096 IND
N1>N TRANS NE85619 sc90
NPN TRANS NE85619 sc90
NPN TRANS NE85619 sc90
NPN TRANS NE85619 51:90
10K OHMS J 063W 0603 c
47x OHMS J 063W 0603 c
47x OHMS J 063W 0603 c
10 OHMS J 063W 0603 CH
10 01-1105 1 063W 0603 CH
6.8K OHM 1 063W 0603 c
IK OHM J 063W 0603 CHI
10K cams J 063W 0603 c
10 OHMS 1 063W 0603 CH
10K OHMS J 063W 0603 c
10K 01-045 1 063W 0603 c
470 OHMS 1063W 0603 c
12K OHMSJ 063W 0603 CH
7-8
PAH
NUMBER
610-3673-279
610-3674-650
610-3673-759
610-3673-329
610-3673-689
610-3674-680
610-3673- 100
610-3674-680
610-3674-680
610-3674-680
610-3673-159
6 10-3673- 1 09
610-3674- 101
6103674401
6 10—3673-339
61 0—3673-829
61 0-3673- 109
610-360] - 100
623- 1504—00 1
623-5005-022
623-5005-020
623—5005-020
623-5005-022
623-5005-022
623-5005-022
642-9003- 158
642-9003- 158
642-9003-227
642-9003- 158
6423008567
642-9003-227
676-0003-65 l
676-0003-65 1
676-0003-65 1
676-m03-65 1
669-0155 103
669-0155-473
669-0155-473
669-0155- 100
669-0 1 55- 100
669-0155-632
669-0155-102
669—01 55- 103
669-0155-100
669-0155- 103
669-0155- 1 03
669-0155-471
669-0155- 1 23
Pan No. 001-3474—002
PARTS LIST
F 023-3474-515
SYMBOL PART
NUMBER DEMON NUMBER
R 868 390 011145 J 063W 0603 c 669-0155-391
R 869 270 OHMS I 063W 0603 c 669-0155-271
_ R 570 13 011m 1 063W 0603 CH 6690155180
R 571 3.9K OHM J 063W 0603 c 669—0155-392
R 572 1.31: OI-[MS I 063W 0603 669-015-182
, R 374 680 01-0715 J 063W 0603 c 669-0155-681
R 375 270 OHMS J 063W 0603 c 6690155-271
RM 000 51.301 62/36” 1-120 CLEAN 6344606062
2 350 0.5111 LONG SMD RESONAT 642-9004-005
023-3474-511
c 225 .0|MF x73 K 0603 CHPR 610-3675-103
c 227 3.2pF +I—.1pF NPO 0603 6103673329
E? 200 MINI CER CRY PIN INSUL 0100345230
1 201 up 301. ROW chmcm 615-7110—214
J 501 STR TERM PCB 6153013030
1. 222 1+/6%U1-1 VAR IND. 5MM 642-1012-015
L 224 l4~I-6%U'H VAR.1N13.5MM 642-1012-015
MP 301 CAN-VCO 3474 0172225751
MP 302 TOP SHIELD 3474 XMIT 017-2225-761
,- MP 303 SHED 3474 BOTTOM XMIT 017-2225-762
MP 304 3474 SHIELD BOTTOM SYNTH 017-2225-763
MP 306 XTAL FLTR SHIELD 3472 017-2225-699
R 230 2.7K OHM J 063W 0603 CHI? 6690155272
R 261 200k OHMS I 063W 0603 CHI 669-0155-204
RE 000 SCI-[EMATIC DL 3474 MAIN 075-3474-030
RE 000 ASSEMBLY DL 3474 MAm 1313 027-3474-030
Y 301 175 MHZ TCXO 4/45 PPM 618-7009-521
z 221 52.95MHZ 41> SKI-12 BW 6320009011
1 241 450 KHZ, 9 10-12 BW CERAMIC 632-2004—015
z 242 450 KHZ, 9 KHZ nw CERANflC 6327-2004—015
' 023-3474-521
r: 225 39151: 591; NPO 0603 610-3674—390
_ c 227 10p1= +/-.1pF NPO 0603 610-3673-100
E? 200 MIN] CER CRY PIN l'NSU'L 010-0345-280
J 201 up SGLROW RCPIZlCNTR 6157110214
1 501 STR TERM PCB 615-3013-030
L 222 l+l—6%UH VAR IND. 5MM 642-1012-015
b] h°fi§85fi
Pan N0. 001-3474-002 W— OHM
PARTS LIST
L 224
MP 801
MP802
mam
MP804
MP806
R 230
R 261
REOOO
REOOO
Y 801
Z 221
Z 241
Z 242
C 225
C 227
EP 200
I 201
J 501
L 222
L 224
MP 801
MP 802
MP 803
MP 804
MP 806
R 230
R 26]
RE 000
RE 000
Y 801
Z 221
Z 241
Z 242
1+/-6%UH VAR. DH). 5MM
CAN-VCO 3474
TOP SHIELD 3474 XMlT
SHIELD 3474 BOTTOM XMIT
3474 SI'HELD BOTTOM SYNTH
XTAL FLTR SHIELD 3472
1.8K OHMS J 063W 0603 CHI
120K OHM J 063W 0603 CHIP
SCHEMATIC DL 3474 MAIN
ASSWBLY DL 3474 MAIN BD
17.5 MHZ TCXO +/-15 PPM
52.95MHZ 4P 151012 BW
CERAMIC DATA FILTER 450KH
CERAMIC DATA FILTER 450KH
023-3474-531
39,51? 595 NPO 0603
10pF +/-11p1= NPO 0603
MINI CER CRY PIN INSU'L
14? SGL ROW RCPT, lCNTR
s'm TERM PCB
l+/»6%UH VAR. IND. 5MM
1+/—6%UH VARI IND 5MM
CAN-VCO 3474
my SHJELD 3474 XMIT
SHJELD 3474 BOTTOM XMlT
3474 SHIELD BO‘l'l‘OM SYN'I'H
XTAL FLTR SHIELD 3472
1.8K OHMS J 063W 0603 cm
1001: OHMS J 063W 0603 cm
SCHEMATIC DL 3474 MAIN
ASSEMBLY DL 3474 MAIN BD
17.5 MHZ TCXO +145 PPM
52195MHZ 4p ISKHZ BW
450 KHZ, 20 KHZ BW CERAM]
450 10-12. 20 KHZ BW CERAMI
This pans list applies to Band 5 mmsccivexs.
®l%'
7-10
642- 10 1 2-0 1 5
01 7-2225—75 1
017»2225—76 1
017-2225~762
017-2225v763
0 17v2225—699
66943155- I 82
669-01 55- 1 24
025-3474—030
027-3474-030
6 1 8-7009-52 1
632-0009-009
632-2004-016
632-2004-0 16
610-3674-390
6 10-3673— 1 00
01 0-0345—280
615-7110-214
615-3013-030
642- 10 12-0 15
642- 101 2-01 5
017-2225-75 1
017-2225-761
0 17-2225-762
017-2225-763
017-2275-699
669-0155- 1 82
669-0 155- 1 04
025-3474030
027-3474—030
618-7009-521
632-0009-009
632200401 3
632-2004-0 1 3
Part No. 001~3474-002
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : Yes Create Date : 2001:05:20 16:14:31 Producer : Acrobat Distiller 4.0 for Windows Author : VicodinES /CB /TNN Title : 62745.pdf Modify Date : 2001:05:20 16:14:59-04:00 Page Count : 56EXIF Metadata provided by EXIF.tools