EMCEE Broadcast TTV500ES User Manual 8a
EMCEE Broadcast Products 8a
Contents
- 1. 8
- 2. 8a
8a
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| Document ID | 45983 |
| Application ID | Ro2tTnoD5CXFKu2bQArsPQ== |
| Document Description | 8a |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 155.21kB (1940072 bits) |
| Date Submitted | 1999-07-06 00:00:00 |
| Date Available | 1999-09-30 00:00:00 |
| Creation Date | 2001-06-09 17:49:31 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-06-09 17:49:33 |
| Document Title | 8a |
Instruction Manual
ATM-1 600
NTSC Broadcast
Television Modulator
P/N 0020-5020
Rev.C1 , March 1 993
mm. drawings and other material contained herein It: proprietary to Cut! Telmnrmmicmm. Inc. and may nDI be
npmducad err dnplicmad in my form wimoul the prior permission of Cue] Telecommunicalicns, Inc.
Shoe its formation in 1968, Catel Telecommunications has manufac-
tured high performance video and audio products to support the needs of
the broadcast and cable television industries, as well as other operators
of broadband communications systems. For over 20 years, Catel has
demonstrated the innovation and financial stability to serve a growing
base of satisfied customers.
Catel oflers fully integrated optical and electronic systems and is commit-
ted to solving customer problems through economical application of
optical and radio frequency technologies. It continues to pioneer ao-
vances in these and other related technologies via substantial research
and development. Because of a commitment to protect customer invest-
ment. Catel manufactures compatible products, offers flexible system
architectures. and provides the means of graceful migration to new
generations of technology.
Long known for reliable products, Catel has evolved into a major supplier
of systems forthe industries it serves. Further. Catel’s commitment to
quality extends from design into manufacturing and through ongoing
systems support.
/————————_—‘——fi
WARR ANTY
Catel warrants new equipment purchased hereunder to be free from
defects in workmanship and material for a period of one (1 ) year ofthe date
of purchase. Catel agrees to make good, F.O.B. Catel's factory, all
defective parts of such new equipment which are returned to Catel's
factory, transportation prepaid.
All equipment returned for repair under warranty requires prior authoriza-
tion, with a return authorization number assigned by the factory or an
authorized factory representative. As in the case of new goods, return
shipments will be made F.O.B. factory and are insured unless otherwise
specified. Claims for visible or concealed damages are to be filed by the
purchaser with the carrier within five (5) days after receipt of the goods.
This warranty will not apply to equipment which has been subject to
misuse, neglect, accident, incorrect wiring not Catel's own, improper
installation, unauthorized modification or use in violation of our instruc-
tions, norwill it extend to units where the serial numberhas been removed
or defaced.
Equipment furnished by Catel but manufactured by another company
shall bear no warranties other than the special hours-of-use or other
warranties extended by and enforceable against the manufacturer at the
time of delivery to the purchaser for the period stated in that warranty.
THIS WARRANTY IS EXPRESSED IN LIEU OF ALL OTHER WARRAN-
TIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITEDTO, THE
IMPLIED WARRANTY OF MERCHANTABILITY AND THE IMPLIED
WARRANTY OF FITNESS FORANY PARTICULAR PURPOSE. CATEL
SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT
LIMITED TO, INDIRECT, CONSEQUENTIAL OR SPECIAL DAMAGES
ARISING OUT OF OR IN CONNECTION WITH THE SALE , USE OR
PERFORMANCE OFTHE PRODUCT. NO REPRESENTATION BY ANY
EMPLOYEE OF CATEL MADE ORALLY OR BY CONDUCT SHALL
CONSTITUTE A WARRANTY.
A TM-1500
hm—
TABLE OF CONTENTS
Subiect Page No
List of Illustrations . . '
List of Tables ..
List of Equipment...
Equipment Specifications ...... vii
1.0 Genm] ...........
1.1 Introduction ..
1.2 Genetal Description
1.3 Features .
1.4 Options
15 Applications
2.0 Installation
2.1 Introduction ........
2.2 Receiving and Inspection
23 Chassis Installatitm
2.4 Power Requirements
2.5 Front Panel
2.6 RearPanel .
2.7 Switch and Jumper Options
2.8 Module Renewal/Installation
29 Cabling the Equipment.
3.0 Opemtjon .....
3.1 Introduction
3.2 Setup
3.3 Video Modulation Adjustment.
3.4 Audio Deviation Adjustment. Monaural .
3.5 Audio Deviation Adjustment, Composite BTSC Stereo
3.6 Sulm‘diary Communications Authorization (SCA) Input .
3.7 Aural Cartier Invel Adjusnnenl. Monauml/BTSC
3.8 4.5 Mhz Subcam'ex Input Monaural/BTSC .
3.9 External 45.75 MHz Input.
3.10 Visual IF Frequency Calibration
3.11 Visual Output Level Calibmtinn
3.12 Calibration for White Level Clipper, Video Frequency Response and Dtfietenual Phase
II
A TM-1600
TABLE OF CONTENTS
(Continued)
Subject
4.0 Cixcuit Description ....
4.1 lnImducu'nn
42 Chassis .....
43 Audio Modulator
4.4 Video Modulator ...
45 13350th Enoodu- Inmtue
4.6 Aural Suhcarriu' Processor
5.0 Pans Lisl..........
5.1 Inn'oducmm ...
5.2 Ordering Infennaxion A
III
ATM-1500
LIST OF ILLUSTRATIONS
Illustration
Figure 1-1 ATM-1600 Block Diagram
Figure 1-2 ATM-1600 Internal Top View .....
Figure 2-1 ATM-1600 Power and Fuse Assembly
Figure 2-2 ATM—1600 anl Panel .
Figure 2-3 ATM-1600 Rear Panel ..
Figure 2-4 Audio Switch and Jumper Locations
Figure 2-5 Video Switch and Jumper Locations
Figure 2—6 PC Board Removal antenna] View) .
Figure 2-7 Normal Inpul/Outpul Connections 13
Figure 2-8 Input/Output Connections wiui Optional 4.5 MHz Ami Subcamerlnpui 14
Figure 2-9 Input/Ourpul Connections with Opu'onaI Composite Video/4.5 MHz Aural Subcurrier Inpui IS
Figure 2-10 Encoded Visual/Aural IF Connections 6
Figure 2-11 Baseband Semmbler Connections. 7
Figure 3-1 Adjustment Access through Top Panel . 3
Figure 3-2 Video Modulation Waveform Tests Z4
Figure 4-1 Schemaiir; Diagram. Power Supply 26
Figure 4-2 Schematic Diagram. Back Plane 7
Figure 4-3 Schematic Diagram. Audio Modulanor . 8
Figure 4-4 Schematic Diagram. Video Modulator . 1
Figure 4-5 Baseband Encoder Interface Assembly. Block Diagram 7
Figure 4-6 Buseband Encoder Interface Assembly, Timing Diagram .38
Figure 4-7 Schematic Diagram, Aural Subcarrier Processor A!)
Figure 5-1 ATM-1600 Final Assembly, Inlemal View l. .56
Figure 5-2 PCB Pans Location Diagram. Audio Modulalo .57
Figure 5-3 PCB Pans location Diagram, Vidw Modulator .58
Figure 5-4 PCB Pans Location Diagram. Aural Subcam'er Processo ...59
IV
ATM-1600
LIST OF TABLES
Table
Table 2-1 Audio Swild: and Jumper Options...
Tablc 2-2 Vida: Switch and Jumper Options
Table 34 dB/Modulan'om Ratio Table"...
ATM- 1600
——_——————————
LIST OF EQUIPMENT
Broadcast Television Modulator. Chassis and Power Supply Assy.
PCB Exoacrion Tool.
Cable Power Cord, 3-Cond. Detachabl
ATM-1600 Aocessory Kit (1-7
CABLE. COAX 61!) F CONN (2 ea.)
TERMINATOR MALE BNC ......
PACKING SLIP .....
SCR. PHH. W/NYLON WSHR 10-32 X 5/8" (4 ea.)
PLASTIC BAG, 9" X 12" X 4 MIL RECLOSABLE
TERMINATION. 75 OHM. F DC-SSO MHZ .
ATM~1600 Accessory Kit (ENC) ..............
CABLE, COAX 6a)" ENC CONN (2ea.)
TERNHNATORMALEBNC (2 u.)
PACKING SLIP...
SCR. PHILW/NYLONWSHR 10-32 XS/S (4ea.).
PLAS‘HCBAG.9"X12"X4MILRECLOSABLE
Video Modulalor Module ..
Audio Modulator Module .4
ATM»I6(X)BROADCASTTVMOD. MANUAL
7600-0029
5218-0028
AMZGH
. SIMMSO
. 5211-0075
. 69104D15
.71fl-1010
.76000029
.Qfil-ZGSS
.KDl-ZIBG
(020-5020
Optional Fquipmem
Baseband Encoder Interface
Aural Subcarrier Processor .
9001-2037
9001-2038
vi
ATM-1600
EQUIPMENT SPECIFICATIONS
Video
Input
Input Level
Input Impedance
Return Loss
Frequency Rewonse
While Level Clipper
Modulation Range
Differential Gain
Differential Phone
Video Signal-to-Noisc
AM Hum and Noise
Sync Compression
Tilt
K-Factor. 2T Pulse
Group Delay
Video Sense
Audio
Input Type
Input Level
Capability
Frequency Response
THD
FM Hum and Noise
Intent-tier Frequency Accuracy
BTSCIMTS Stereo Channel Separation
SCA
Maximum Input Level
Nominal Input Level (67 kHz Subcarricr)
Composite NTSC video. negative syne
1.0 V p—p for 87.570 modulation. 1; 6 dB adjustment range
High impedance loop-through (for 75 ohm circuit)
30 dB minimum. 25 Hz to 6.0 MHz
with 750. 1% external terminator (supplied)
1 0.5 dB. 25 Hz to 4.18 MHz
Adjustable 85 - 951: (inlernal adjustment)
To 95% modulation depth
2% maximum at 87.517 modulation depth. 10—9070 APL
0.5° maximum at 87.595 modulation depth, 10-9091; APL
>63 dB weighted. measured with Tekn'onix 1450-1
60 dB Minimum below 87.595: modulation dqptlt
025 dB maximum at 87.595 modulation depth
195 maximum on 60 Hz squarewave
296
Meets FCC Regulations Sec. 73.687 (3) (3) requirements
for broadcast exciters
mOutpul: HI= 5 VI with Video in: LOW= OV, withno Video in
Monaural: High-impedance bridging. (600.0 (extemnl) balanced or
unIztaIanced)
BTSC/MTS: 750 unbalanced input
Monatual: 0 dBm, x10 dB
BTSC/M’I‘S: 1.0 V p—p, : 10 dB
Monaural or BTSC/MTS with switchable preemphasis network. or
separate inputs. MTS bandwidth to 120 kHz
Mnnnurnl: within 1 0.5 dB of 75 HS preemphasis. 30 Hz to IS kHz
BTSC/NITS: Defined by stereo encoding unit
Monaural: 059i; maximum 31115 kHz deviation. 30 Hz to 15 kHz
BTSC/M’I’S: Defined by stereo encoding unit
SOdBminimum belowflSkszeviation,30Hzto lSkHz,monatnal
45 MHz: 100 HZ. any combination ofspecified modulation and
operating temperature
40dBminimum.50Hltn10kHz
4.0 Volts peak-to-puk
2.2 Volts peak-to-pfik
_—_—__
VII
A TM- 1 500
EQUIPMENT SPECIFICATIONS (CONT.)
Aural Subcarrier (Optional)
Input Signal
Input Levels
Auml Subcarricr
Composite Video
Input Impedance
IF Output
Output Type
Output Impedance
Output Retum Loss
Output Level
Frequency Accuracy
ICPM
Aural AM Noise
IF VSB Output Attenuation
IF Output Power Attenuation
External Signal Sources
IF Reference Signal
Level
Impedance
Options
Baseband Encoding
4.5 MHz Aunt] Input
3. Separate composite video and 45 MHz aural subcanier
or
b. Composite video/4.5 MHz aural subcarricr
+35 dBmV fi dB 314.5 MHz
1.0 v p—p 1:6 dB
75 ohms
Separate Visual and Aural IF outputs, and aeombined IF output
75 0
>16 (18
+ 40 dBmV, minimum with normal setup. All input/output parts
i 200 I-Izoi‘45.75 NH-Iz visual 0:41.25 MHz aural IF.
any combination of specified modulation and operating temperature
<3“ at 87.596 modulation depth
< -55 dB at 41.25 MHz
Visual Currier 4-0] 104.18 IVE-11:1 0.5 dB relative to + 200 kHz
Visual Carrier 4.25 MHz -38 dBc
-2.25 MHz and below -60 (185
44.75 MHz -38 dBc
+525 MHz and above -60 dBe
45.75 MHz CW can-let
+ 30 to+50 dBmV
75 fl
Optional interface for Zenith Z—TAC Encoder
Optional input for 4.5 Mitz aural carrier. monaural or BTSCIMTS
from othir demodulator or stereo generator
VIII
ATM-1600
EQUIPMENT SPECIFICATIONS (CONT.)
Electrical
AC Power Input
Maximum Input Power
Fuse
Environmental
Opu'aling Temperature
Opening Humidity
Mechanical
Size
Weight
Chassis
Internal Controls
Front Panel Controls
Front Panel Indicators
90-260 VAC. 47-63 Hz
19 was
SAG, 1/2 amp slow blow
~30° lo+50° C
95% maximum, non-condensing.
1.75" H x 19" Wx 17" D
121bs
Steel
BTSC/Mom audio selection
SCA Input (ON/0m
InlemaI/Exlemal 4575 M112 reference
Power ON/OFF Switch
Video Modulation Comm]
Aural Carrier Control (level)
Audio Deviation Control
Audio Deviation Meter
Video Modifialion Meter
-20 dB IF Test Point
A TM-1 600
EQUIPMENT SPECIFICATIONS (CONT.)
Hear Panel Connectors
AC Fuse Block
Audio Hi-Z (Input TmninaI Block)
BTSC IN (Special) (ENC)
SCA IN (Special) (BNC)
Video In (ENC)
Video Out (ENC)
Game In (Z-TAC encoding) (F or ENC)
Aural Du! (F or ENC)
Aural In (F or ENC)
Visual 011th or ENC)
Visual In (F or ENC)
Comp IF Out (F or ENC)
IZF Ref (F or ENC)
RF Om (F or ENC)
Video Sense (Terminal Block)
ATM-1600
__—_________—______
ATM-1500
GENERAL
__—___.__._—————-——
1.0 GENERAL
1.1 Introduction
The purpose of this manual is to introduce Catel's
Am-lflxleadtmTelevisionModulatm(A1M-l6M).
explain its options and features, and give some examples
of its uses. In addition, detailed sections have been de-
voted to the installation and operation of the ATM-16m.
The manual concludes with athorough desaiption of its
circuitry andapans listtoorderspareorreplacement
parts.
1 .2 General Description
The ATM-16m is a high perfonnanee modulator
designed for use in broadcast television and broadband
applications. Refer to Block Diagram, Figure 1-1. The
modulator converts audio/video signals to IF can-lets to
drive a transmitter upconverter. The configuration de—
scn'bed in this manual is for the NTSC format. Howeva.
PAL B/G. PAL 1. or SECAM DIK versions of the ATM-
1600 are available.
The ATM-16m is composed of a chassis/power supply
and two different modules: one for audio and another for
video (refer toFigure 1-2). The design is based on the use
of plug-in circuit boards which can be removed and/or
replacedatwill,e.g.,anoptional4.5mizAuralSubmrriu
Processor module could replace the Audio Modulator u
required
The ATM- 1600 Broadcast Television Modulator chassis
is designed for installation in standard (ElA) 19 inch
mks. and occupiesonefl) vutical mounting space (1 .75
inches high). Use: adjustments, monitor points and bar
graph modulation meters are located on the chassis front
panel (refer to Figure 2-2). The input and output connec-
tors are located atthe rear along with an AC power input
block and fuse holder (refer to Figure 2-3).
The ATM-1600accepts baseband video and audio signals
(monaural or BTSC) which modulate 45.75 and 41.25
MHz carriers respectively, Loop-out connectors for the
aural and visual Ecru-riots areprovided on the rearpanel.
Following the loop, the visual IF signal passes through a
surface acoustic wave (SAW) filter to sharply define the
passband edges. Next the aural and visual IF carriers are
combined. when required. and sent to the composite IF
output connector on the mar of the panel.
1.3 Features
1. Bmadwt VSB-AM modulation
2. BTSC/MTS compatible
3. Surface acoustic wave (SAW) IF filtering
4. Selectable interval/external 45.75 MHz reference
5. Bar graph modulation meters
1.4 Options
45 MHz Aural Subcarrier Processor—Replaces the Au-
dio Modulator when a 45 MHz aural subcarrier input is
required (monaural or BTSC) versus a baseband audio
input
Basehand Encoder Interface (Zenith Z-TAC) -—Provides
an interface to the video module for scrambling signals.
1.5 Applications
In its standard configuration the ATM-1600 accepu
baseband audioand video from sources such as a satellite
receiver, off—air demodulator. VCR or a live audio/video
irtput'l'heattdiomaybemonaural.30to15kl-lz.orB’l‘SC/
MTS.30Hzro lZOlrI-lenoptionaMSLfl-leubcat-ricr
Processorreplaces the standard Audio Modulator when
themidiosourceisatdjw-Izsuchasfi'omaBTSC
genennrx or off-air demodulator.
ForbmadcnstusetheatualandvisualH-‘loopsonlhe
chassis rear panel provide access points to excite a traits-
mitter upconvcrter and RF output amplifier. The same IF
____—_—_———-——-—_—_
GENERAL ATM-1600
{loaf
FIgureI 1
AYM-1600 Block Dlagl‘am
ATM-1600 GENERAL
_____________———_——
loops allow the user to inwriaoe a variety of IF encoders The MSC version of the ATM-1600 may be changod In
In the ATM-1600 for scrambling purposes. An internal one of the ether currently available versions (PAL BIG.
inmrface for the chith Z-TAC scrambling system is PAL [or SECAM DIK) by ordering umappropriaw mdin/
available as an option. video modules.
Fluum 1-2
Ammo
Inlemal Top View
GENERAL ATM-1600
_____________________
ATM-1600
INSTALLA TION
_________________—————
2.0 INSTALLATION
2.1 Introduction
Pmpu'instnllationoftheA'lM-ImOwillensurepeak
performance. dependability and ease of opmtion. Instal-
lation includes the following steps:
Receiving and Inspection
Clussis Installation
Power Requirements
Cabling the Equipment
2.2 Receiving and Inspection
Inspect the shipping container for visible damage. If
the container or packing main-i315 are damaged. they
shnuldbenvedincaseaclaimncedstobefiledwilhthe
carrier. Any obvious damage to the container. packing
materials. or equipment should be noted on the receiving
papersattimeot‘delivery.Noti.fytheearrieras soonas
reasonablypnssfltleinthosecases wheredelivery is taken
prior to finding suspected damage to the shim-rent.
If physical damage to the system is suspected, do not
perionnanyeperationaltest. Thisistoprevmtoperator
exposumwpownfinllnzardsand furthu'dnmagetome
equipment.
Cateltestsevery shippedproducttoensruethatnllare
operating cmectly prior to shipment. and makes every
efiort to ensure that equipment will arrive in a safe and
timely manna. However, if the equipment is not open-
tional upon receipt, and there is no evidence of shipping
damage, it may be necessary to return the equipment for
repairuneplacement. lfso.contacttheCanelRepair
Deparnnentnndreqmta return authoriution (RA) num-
ber.
All retumedeqnipmentshouldbeadequntely peel-ed with
the RAnumberon theomsideofthebox. Apaclo'ngslip
should be included. stating the equipment defuzt, return
shipping address and RA number.
2.3 Chassis Installation
TheAN-lfiMchasisisintmdedtobemnntedin
standard (BIA) 19-inch ranks. installation will be made
from thefrontoftherack. Arackmountkit(P/N8000~
1601) is provided with each chassis. The chassis cabinet
isequippedwithlmdlesusedfor mounting purpossr The
handles are capable of supporting a fully loaded chassis
provided all four rack mount bolts are used.
2.4 Power Requirements
The ATM-1600 requires apower source of90 - 260
VAC 47- 63 stinglephaae Switchingin the ATM-moo
isnot required ovathis voltage range. Current consump-
tion is less than .150 AC amperes The unit is fused with
a lflamp slow/blew fuse; weFrgurez-l for fuse replace-
ment: theFuscPull handleejectsthe fuse afterthe power
cml is removed and the flue cover is slid to the left.
Warning
Before switching on the ATM-1600. its protec-
tivegruundterminnl mustbecmnected tothe
ACpowersotueegmund'lhemainpowercord
shouldheinsenedinanoulletwith uprtmctive
grotmd contact. Do not negate the grounding
protection by using In extension cable, power
cud or auto traitsfu-mer without a protective
ground cmduetnr. Failure to gromd the ATM-
lGOOpmperiycoultlremltirt serious personal
Figure 2-1
ATM-1 500
Power a Fuse Assembly
__________—___———————
INSTALLATION ATM-1600
___________———-——-—————
2.5 Front Panel 2.6 Rear Panel
The ATM-1600 from panel, its indium. the POS- The ATM-16m rurpanel, its connectors, theiruses.
sible adjustmentsaml the connectors availableare shnwn and lnopgmquhedmimplcmenlspecixl qpugnsareshown
POWER—Applies line voltage to the ATM-1600
power supply
AUDIO DEVIATION—This control sets the au-
rnlcarrierdeviation withnhasebandmonamalor
composite BTSC input.
0 AU'RAL CARRIER—This adjuslment controls
the sum] carrier level attheCOhlfl’OSlTE lFOUT
rear panel connector (113).
0 AUDIO DEVIATION—Deviatiun of the audio
carfierisindiwedonfliefimtpmlbargmph.
with a basehand mammal or composite BTSC
input.
6 VIDEO MODULATION-qo—This bar graph
provides a visual indication of video modulation
percurtzge.
G VmEO MODULAflON—Adjustvisual carrier
modulation depth, with a baseband video input.
0 lFTFSTPOINT 4.0 dB—Tlre"? typeconnec-
tor allows monitoring of the composite IF output
usingaspectmm analyzerorothu‘insmunents.
The signalnt this testpointis ZOdB down from the
output.
Flgure 2-2
in detail in Fm 2-2 in detail in Figure 2-3.
INPUT 90-260 VAC, 47-63 Hz—lnput connector
for line powerr This power module also contains
the line fuse.
e AUDIOHI-Z, JZ—Acczptsbaschanduudiomon-
aural) fordirectFMmodulntion ofthe4125 MHz
VCO intheAudio Modulator. Input leveliso dBm,
110013. IZistermimtedextemal-IywimaSOOohm
impedance matching resistor. when bridging is not
required.
a BTSC I'N (SPECIAL). 13—Aueptsncomposite
BTSC input for duectFM modulan'cn of |hr:4L25
MHz VCO in the Audio Modulator. Input level is
1.0 V p—p : 0.5V.
If the optional Aural Subcarrier Processor is used
this connector accepts a 45 MHz aural subcan-ier.
urcomposirevideolltj MHzauml subcarrierinput.
Aural subaurier input level is +35 dBmV 15 115.
Video input level is lv p-p 1:6 dB.
0 SCA IN (SPECIAL) —This connecror is nor-
mally used as an SCA input. SCA input level will
be 25Vp—p. 105V, and is used with a monaural
baseband audio input. unly.
[ftheoptionaMSNEiZAuml SnbcarrierProcessar
is used. this connector becomes the filtered video
output from a cumpom‘te video/4‘s MHz aural
ATM-1600 Front Panel
ATM-1600
_____—_—___———-————_-
suburrier input on connector 13‘ 14 is tlten nor-
mally connected to 15, Video lru
VIDEO INIOUT, J5,J6—Providu high imped-
ance loop-through connections for the baseband
videosignal somce. Connect the video source tols
and tennirmtel6wiihasttpplied75 ohm termina-
tor,PIN5211-0026fornon-loop through operation.
IF REF. J7—Provides either input or output of
45.75 MHz CW IF wrrierreierence. Impedance in
either operating mode is 75 ohms. nominal.
OUTPUT MODE (nomtal. stand-alone openting
mode): Video Modulator switbh (SWl) placed in
INF. position. 17 provides 45.75 MHz CW output
ar+40 dBmV level. May be used as “575 MHz
source for coherent system operation or may be
applied to a frequency counter for measurement of
thevisualIFfrequeney.” mustbe tenninated with
a supplied 75 ohm terminator (P/N 5218-0028, F;
PIN 5211-0026, BNC ) when not used as a signal
source.
INPUT MODE: Video Modulator switch (SW1)
placed in EXT. position, 17 accepts a 45.75 MHz
CW inputata+40dBmV level fromanHRC comb
generator or from another reference unit.
INSTA LLA TION
GATE IN, Js—Accepts timing pulses from a
basehand encoding scramblersuchasthe Zenich‘
TAC systemProvirlesneeessarytiming infonnation
to the video modulator for proper clamp operation
with scrambled video.
AURAL IN/OUT, ”Jill—Normally used as an
aural IF source to drive a transmitter upconverter.
also provides an interconnection between the
modulallx's41.75 WizattralIFeircuitsandan IF
encoder for pay TV scrambling, Jumper I9 to no
with supplied cable assembly (PIN 51201060, F:
PIN 5120-2050. BNC) for [F signal continuity in
non-scrambled operationwhen acomposite output
is needed at 113 COMP OUT. The aural IF input
and output interface level is + 40 dBmV.
VIDEO SENSE, 116 -—This monitors the pres-
erteeofvideoonlS.V‘IDEOIN. AnLED lampor
other alarm circuits may be connected between the
Video Sense terminal and ground for remote indi-
cation of video sums. The video sense output is
m. with high equaling sv with video in. and low
equalingOVwithnovidenin.
VISUAL E OUT/IN, J 11. J lz—vaides inter-
connections between the modulainr‘s 45.75 MHz
visual IF circuits and an IF encoder for pay TV
Flgure 2-3
ATM-1600 Rear Panel
INSTALLATION ATM-1600
____________—-———————
mmblingJumpet-Jll lollZwith suppliedcable
assembly (P/N 5120-1060.F:PIN 517020503140
for IF signal continuity in non-scrambled open-
tiun. The visual IF input and output interface level
is +40 dBmV.
Q com 1? our. Jill—Provides a video plus
audio composite IF wtput from the Video Modu-
latenorvisualIFottlyifthemarpnnelaunlEFloap
thmughisbrnkm.Nommllyusedasaansnumc
to drive a msmiflu‘ upconverter.
Q RF REF, Jls—Not used
@ m- om, Jl7—Not used
2.7 Switch and Jumper Options
The ATM-1600 is designed with switch and jumper
connections on the PC bmnl msemblies which allow the
user to select fi'nm various options on the assemblies.
These nptionspmvifle flexibility in applying themodules
to specific and unique applications. Switch and jumper
options on the video and audio modulu should be set
according to the infonnaticm shown in their respective
table‘s; Table 2 -l for audio: Table 2-2 for video. Switch
and jumper locations are shown on Figure 2-4 (Audio),
Figure 2-5 (Video).
ATM-1500 INSTALLATION
swumswzln Aumm-wmimgaamw,m¢
mu rail-ion mun Mn mush mum.
sw‘ miswzin mepofiuBTSCImLmnizflkHzlnd Th-cum-InBTSCmmiuanNcwnnacmaqu-l
ms; polidm dim-An mu: Wampum um smut pan-L Nu! Ind Maud 501.0 v 9-1: 304st
m Aum u - “pall- SCA mm mm “downy sax Inpul mum Donn sue cannoflmunn m m, unani-
pnmi.
wmwx
Th- mun-m min Inpm in inn mminm mp J? an «m mr
Mil DIM. lflpvl IWII "fluid In 065m 210115,
Table 2-1
Audlo Switch and Jumper Options
Figure 2-4
Audio Switch and Jumper Locations
INSTALLATION ATM-1600
“mm“ “m
manfiEFFm mmfiumcwnmmmuamvmn
mammquFFv-cwwy. chSJSM'izaignll muammmurmpmmu
mama ”wean-iv: mas
Una n ping m swam-i 1-7“: man now. rim-nun“: mm mm uu oi in mm Z—TAC Ming
Wm.
mun-am; DcmNn-ir-WMIMMIFMm-MNF
JiZ In saw mm.
m pin: zux Comm my mu m: uni F cum-n mm.“ Anupm men In mum-mum IF mars “sum-d.
Ji 2 mn iF SAW mm.
Table 2-2
Video Switch and Jumper Options
Figure 2-5
Video Switch and Jumper Locations
1D
ATM-1600
2.3 Module Removal/Installation
1heATM—l600modulesareconfigtutdandinstalled
at the factory, howevu they may be removed to change
internalswitch settingsortobereplaeed. e.g..anoptional
4.5 MHz Aural Submxriex Processor could replaoe the
Audio Modulator if requimed
The ATM-1600 ON/OFF power switch must be in the
OFF position prior to module removal or installation.
To remove the modules, loosen the two thumb screws and
Step 1
Insert Extraction Tool from the
top of the video board imo the
holes provided
Step 2
Remove both video and audio
boards at the same time by
pulling away from the chassis.
INSTALLATION
removetheATM-lSOO firormpanelflsing the ATM-1600
PCB Extraction Tool (PIN 6099-0027) remove the Audio
and Video Modulator modules as one assembly as shown
in Figure 2-6. Remove the two screws holding the mod—
ules together. the two modules may now be separated.
To install the modules. insert a module (either the Audio
Modulator or 45 MHz Aural Subcanie: Processor) into
theedge oonnecmroftheVideo Modulator module‘ install
the two screws. Reinsen both modules as one assembly
into the ATM»I600 chassis. Replace the chassis front
panel and secure with the two thumb screws.
Flgure 2-8
PC Board Removal
(lntemal View)
11
INSTALLATION ATM-1600
___—_____________—————————
2.9 Cabling the Equipment
Input and outpulcmnecfions will vary dcpending on
the use: applications. Fertile most common video. audio,
andlI-‘modulamrcmnectionsmfennme followingfigums.
Figure 2-7. ATM—1600 rear panel connections with
baseband video and audio inputs (mammal) and SCA
input (selectablc) orcnmposilc BTSC audio input (Elect-
able).
Figure 2-8, ATM- 1600 twpanel animations with sepa-
rate baseband vidw and 4.5 MHz aural subcanier inputs
(optional) BTSC or monaural.
Figure 2-9, A'I'M-l600 rear panel connecuons with a
composite Vidal/4.5 MHz aural subcarrier input (op-
Lional), BTSC or monatuall
Figure 2-10, ATM-1600 rear panel connections. encoded
visuallamal IF.
Figure 2-11, A'IM-l600rearpm1elconnutionsbaseband
scrambler.
12
Am" 500 INSTALLATION
m mum-Sm};
m fikwmbm-q ‘
Jumplv can. Ann-nary
PIN summ, P
am 512mm. BM:
Swflhd
m sznm‘ sac.
PIN mum F
sum-u
VIBE) souacE
scA SOURCE (SELEC'rAaLE)
use SOURCE (SELSCYABLE)
AUDD SOURCE LSEECTABLE}
, ATM-1606
Figure 2-7
Normal lnput/Outpul Connections
_______—____—_————————-
13
INS TALLA TION
_——___—__———
J|1 nFotm-n u-d)
_ Ml ”HFKMM
' JI! CW? F001
VISUAL 1mm ,
Jaws-mummy
pm Elm-1060.7
mslm,mc
Snail-d
AURAL IF our
m sznoms. am;
WN 52mm; F
mpg-u
VIDEO souRcE
LE Mn: Ausvu. SJBCAHRIEH Bounce
(m)
Figure 2-8
Input/Output Connections with Optional 4.5 MHz Aural Subcarrler Input
ATM-1600
14
INSTALLA TION
A TM- 1 600
1411 nwaw1mu-c;
. m Mae}... mg 4
VISUAL IFOUT
may GINO my
PIN MID-1060. F
m HMS, ENC
Sewn-1
AURAL IF OUT
PIN 5211-0025. ENC,
PM 5215005 F
swam
PIN “MW.
ENG~ SUPPLIED
WITH AuflAL SUBCAHHIER OPTION
CWPOSITEVIDED/Lj MAUHAL
SLBCAFIRIER SOURCE (0mm)
Figure 2-9
Input/Output Connections with Optional Composite Video/4.5 MHz Aural Subcarrier input
___’______—__—-——————_'__—
15
INSTALLATION ATM-1600
IF sbnAMBLER'
AUDIO SOURCE sE—EC’IAELE
Flgure 2-10
Encodod unalIAuraI IF Connections
_—__‘________._—————-
16
INSTALLA TION
ATM-1500
unwed-w
PM “m4”. F
PM MWJM:
SW“
BASEBAND ‘
SCRAMBLER
Figure 2-11
Basehand Scrambler connections
____________——————
17
INSTALLATION ATM-1600
18
ATM-1500
OPERATION
_/
3.0 OPERATION
3.1 Introduction
Mums in this sectim Mlle how to adjust the
ATM-1600foroptimumpa'fonnancefllreequipmenthas
beentlxrmughlytmodntdreiacunynndonlymimr
adjustments should be required
3.2 Setup
Connectcoaxublunndaudioludstotherur
chassispandinaccadmcewitluheinsmrcfionsinSec-
tim20fdrismanualandasmerappliwiunsdimte.
The following test equipment will be required Improper
adjustments of the ATM-1600.
RF Spectrum analyzer. 50 MHz Capability
Video test generator or video source
Audio oscillator or audio source
BTSC germ-arm with composite or 4.5 MHz output
Frequency Counter
TV Demodulatm‘
Waveform Monitor
Vccuxsoope
Swp Attenuator
PlugrheACpowercudinmtlwpowa-linemodulennd
theAC powersmuee.PlacedrePOWE.R ONIOFstitch.
locatzdon the front panddn theON positicm.
3.3 Video Modulation Adjustment
Cormcctavideotestgmwrmlswlmiom)“
theATM-lSOO-ndsetitatnleveltlmismndardfnrdw
system. Select a full-field test signal with full video
amplitude, Acolorbarsnrun—mndulmed stair-mp signal
ispreferredlimulethevideolooptltroughauswmlio
OU'Distaminanod. ‘
Commaspectmmmtalymrtn the fimtpanel lFTEST
POINT. ‘l‘ltemodulztedvisualchat-nasignalslmuldbe
approximately +20 dBmV utthis“? typeconneflnr.
Use the following spectrum analyzer settings:
Frequency 45.75 MHz for NTSC
Bandwidth Maximum or > 300 kHz
Scan Width Zen:
Trigger ACLine
Video Film- None
Scan time. 2 mares/division unadjusted to display
at least one picture field.
Hnemnemespectnunanalywinrmaximum display
peak amplitude of the visual l‘F signaL Adjust the ampli-
tude and log dBldivision cannols for mrly a full scale
«158th-
Tlu: modulation pereentage is read directly in decibels as
tltcdifieretubetwemtlwpmusynctimandthemini-
mum (pukwlrilewfthevideowaveforrnflse the following
tabletoconverttltedB min tnperoentager,
Modulation %
Table 3-1
dBIModulatlon HmloTable
Ifrequiredmdjusttlw VIDEO MODUIA’l'lONoontmlon
die ATM-1600 finntpanel mpmduce upak-whitevidoo
modulation percentage of 87.57» on the spectrum ana-
IanheATM-lmfimtpalemEOMODmflON
indicator should read S751; also.
—/
19
OPERATION
3.4 Audio Deviation Adjustment,
Monaural
TheAUDlO DEVIATION wtlmlon the ATM-1600
frompanellsfncttryndjustedwpmducezskflzpuk
deviation widtnAOOMOdBmeudininpthiththiStest
tone input to terminal stripl2(AUD10), taminzled with
a 600 ohm load the front panel AUDIO MODULATION
meter will indicate -6 dB. The AUDIO DEVIATION
cmn'ol can compensate for different audio input levels
nndshouldbeadjustedwobtainnmoximumindicatiunof
-6 d]! on the front panel meter.
The following procedtne ins been provided for vaiflen—
tion and troubleshooting purposes.
On meAm-lemarmrtelcomectannudiooscillzlm
to 12 (AUDIO), tenninated with a 600 ohm load. Set tlte
oscillator output frequency. using acounter. to 10396 Hz.
and the output level for -14.2 dBm into 600 ohms.
Connectaspecmunsnalyzertol9(AURALOUT)mthe
elmssisreurpmeL'I‘hemodulatedarnnllFearrierslmnld
be approximately +40 dBmV at this cmnector. Use the
following spectrum malyzer settings.
Center Frequency: 41.25 MHz
Bandwidth: 3 kHz
Scan Width: 20 kHszivisim
Trigger. AC line
Scan little: 2 mm
Video film: None
The aural carrier should have multiple sidebands 10396
Hznway.WItalthedeviaximisal25kl-lz.thenmnleaniet
powwillbezern.’1hesidebnndswilloontainnlldre
siytalerrugy.'lhis indicatesthe firstBeeselmndulalion
null ofthecarrier. Ifmtuired. adjustthe AUDIO DEVIA-
TlON control on tile ATM-mm Emmpmel it: the tint
Bessel null.
A400Hztesnnnermymwheinsertedtafl(AUDlO)ol
tl'teA’l'M-lSOOJhetesnnneoutputlevelshouldbefldBm
ATM-1600
into600ohms.'l'hea|mlD’mrrierdeviationwillbe25
kHz peak and the front panel AUDIO MODULA'HON
metershoulcl indicate-6&3.
3.5 Audio Deviation Adjustment,
Composite BTSC Stereo
Ensure the Audio Modulatu switch options are con—
figmed («BTSC input. Referto'l'ablezd ofthisn'utnttal.
The AUDIO DEVIATION comm] on the ATM-1600 is
fumryadjufledtoproduee SOkI-lzpeakdevintion witha
composite B1SC input of 1.0 v p-p with the use input
tol3 (BTSC Nontheteetpandt'l‘hefmmpanelAUDIO
MODULATION meterwill indicate 0 dB muximum.Tlte
AUDIO DEVIATION control can compensate for differ-
ent BTSC input levels and should be adjusted to get a
maximum indication oto dB on the hontpanel meter.
The following procedure has been provided for verifica-
tion and troubleshooting purposes.
Connectnnaudinoscillarormlil (BTSC m) oftheATM—
lflDtenrpaneL Setthe oscillator output frequency. using
ncounter.lo10396llz.nnd the ouqiutlevel forodBm into
75 ohms.
Conneclaspeclrumatlfllyurlo19(AURALOUT)on the
chassis rut panel. The modulated aural 1]: carrier should
be approximately +40 dBmV at this connector. Use the
following spectrum analyzer settings.
Center Frequency: 41.25 MHz
Bandwidth: 3ItHz
Scan width: 20 kHz/division
Trigger. AC line
Scan time: 2 msec
Video filter. None
The anrnl nrrier drotdd luve multiple sidebands 10396
Hzawey.Whenthcdevinfimisat75kHLtttemn-rlcmier
powewillbewojhesidebandwilleomninallthesignal
energyfl'hisindienmthefirstfifiel modulationnullol
the mic.
______________——————
20
ATM-1600
OPERATION
________—__———————
If required. adjust the AUDlO DEVIATIDN control on
the ATM-16m front panel for the first Bessel null. The
front panel meta will indicate —6 dB.
Awmposite BTSC signal maybe insenedinto 13 (BTSC
IN) oftheATM-lflXl. The BTSClevel shouldbe 1.0 V p-
pinto75 ohmsTheauml IFmrrierwilldeviateusmtnh
as i 50 kHz. The Eton! panel AUDIO MODULATION
meter should indicate a maximum ofO dB.
3.6 Subsidiary Communications
Authorization (SCA) input
Ensure the Audio Modulator switch options are con-
figured l'or monaurallSCA input. Refer toFigure 2-4 and
Table 2-1.
Connect the SCA sttboarrier source to 14 (SCA Di, SPE-
CIAL) of the ATM-1600 rearpanel.
Connects spectrtun analyzerto 19 (AURAL OUT)on the
chassis rear panel. The SCA modulated atrial IF carrier
should be approximately + 40 dBmV at this oonnecttx.
Adjust theanalyzertoclearly resolve and display theSCA
subcarrier,
Modulation of the aural IF carrier by the SCA subcarrier
must not exceed FCC Regulations. (See. 73.682 (c)).
Normally, the SCA subcarrier is set [or approximately -18
dB relativetothedlfimlzaumlmcanierlevel. If
required. adjust the SCA subcarrier source to achieve a
-18dB Ievelrelativetotheflfi WmeIIFcart'iu.'l'he
audio deviation meter does not acctrrately (understates)
display the SCA deviation; therefore,“ should not be used
to set the SCA levels.
3.7 Aural Carrier Level
Adjustment, Monau ral/BTSC
The 41.25 MHz aural IF carrier level is adjusuble
onlyiftheaurallI-‘looplluoughisoonnectedonthe
chassis rear panel. The lF output is on 113 (COMP lF
OUT) whereboth theauraland visualIFarepresenL
_____—_______————————
21
Connecta spectrumanalymtoltz (COMPlFOUT) on
the ATM-1600 chassis mrpanel. Adjust the analyzet to
molveanddisplaybotlttheattralandvisualfl-‘wriers.
The visual IF (45.75 Mil-ll, NTSC) carrier level shouldbe
+40 dBmV: theaural [F (41.25 MHz. NTSC) carrierlevel
will be dependent on the frontpanel AURAL CARRIER
control.
The maximum aural carrier power is 20% ofpeal: visual
wrierpower. and the minimum is 10% (see FCC Regu-
lations Sec. 73.1570 (5) (2)). Normally theaumlIFoarrier
is set for —8 (13 relative to the visual IF carrier level. in
order to comply with Sec.73. If required. adjust the AU-
RALCARRIBZ conuoltoachieveanaumlcarrierlevelof
~8 (15 relative to the visual IF carrier level.
3.8 4.5 MHz Subcarrier Input,
Monaural/BTSC
Ll‘the 45 MHz Audio Subcat'rier Processor module
hu not been installed. refer to Paragraph 2.8 module
removal/installation procedures.
Connect a 45 MHz subcarrier source to BTSC IN (SPE-
CIAL) (13) on the ATM-1600 rearpanel. Subcarrier input
level should be ¢35 dBmV, : 5 dB into 75 ohms.
if a composite video/4.5 MHz aural submrrier input is
laud. conned the source to 13 BTSC 1}! (SPECIAL). on
the ATM-1600 rear mnel. Connector 14 SCA m (SPE-
ClAL) becomes a filtered video output (video minus the
45 Wizsttbcarxier)andmttstbeloopedtols,VIDEOm.
Tile AUDIO DEV'IATION meter and the AUDIO DE-
VlA‘l'lON control will not be operating. The audio
deviation is set by the 45 MHz subcan-ier source.
Theaunl D’carrierlevelatll} (COMP IFOUD maybe
set by the A'lM- 1600 from panel control AURAL CAR-
m.
OPERA ”HON
ATM-1500
fi———_—_—_
3.9 External 45.75 MHz Input
Ettore the Video Modulator switch options are con-
figured form external 45.75 MHz input. Refer to Figure
2»5 and Table 2-1
Onthe ATMAIGOOrnrpanel.” (lFREl-jaooeptsadSJi
CWinputata-o-dOdBmVlevelfrmnnnPRCct-tmb
genemoror from anodcrrefereme standard. The result-
ingauralandv‘sualII-‘signalsmaybemonttmedonme
front panel IF'i'BTPOINTvaided the lI-‘loop cuts are
connected on the chassis rearpanel.
3.10 Visual IF Frequency Calibration
Ensure the video modulator switch SW1 is config-
ured for NT. refer to Figure 2-5 and Table 2-2.
On the ATM~1600 rearpanel. remove the 75 ohm temti-
natorfrom cmnector17.IFR.EF. and connectafrequency
counter.
The ATM-MOO visual output frequency should be at
45.75 MHz 1 200 1-11.11“ not, adjust LlZ which is acces-
sible through an opening in the ATM-1600 Top Panel.
labeled IFOUTPUT FREQ. See Figure 25-1. Usea plastic
inductor (hex head) alignment tool for this adjustment.
Remove the frequency counter and replace the 75 ohm
terminator.
3.11 Visual Output Level Calibration
Connect aspectrum analyrertoJlB COMP lFOUl‘.
The mmured output level of the 45.75 MHz visual IF
carrier should be + 40 dBmV. Ifnot. adjustRl76 which is
accessible through an opening in the ATM-1600 Top
Panel. labeled lF OUTPUTLEVEL. See Figure 3-1. Use
a small (flat bladed) screwdriver for this adjusu-nent.
3.12 Calibration for White Level
Clipper, Video Frequency
Response and Differential Phase
Connect the test equipment 3 in Figure 3-7. Set the
waveform generator for n COMPOSITE output. Set the
demodulator to SYNCHRONOUS. SYNC Tfl’ detection
and SOUND TRAPS OUT. Set the step attenuator to 0 dB
attenuation.
3.12.1 White Level Clipper
Adjust R42 WHITE LEVEL CLIP, which is neces-
sible through an opening in the ATM»l600Top Panel. for
its maximum calmer—clockwise position. See Figure 3-1.
Use a small (flat bladed) screwdriver for this adjustment.
Temporarily setthe video modulation depth to 10095 by
adjusting the VIDEO MODULATION control on the
ATM-1600 front panel. to a point where the video peaks
are at 120 lREas seen on the waveform monitor. Readjust
WHITE LEVEL CLIP (R42). to a pointjust below ampli-
tude compression. Reset the front panel VIDEO
MODULATION control back to 87.599.
3.122 Video Frequency Response
Set the waveform generator for a MULTlBURST
WAVEFORM. Adjust R6 VIDEO PEAK, which is acces-
sible through an opening in the ATM- 1600 Top Panel. for
bestmultiburst flatness from thelowest hequencybuxst at
0.5 MHz to the highestfrequency hurstal4JS MHz. See
Figttre 3-1. Use a small (flat bladed) serewdrivu' for this
adjusunem.
3.12.3 Differential Phase
Set the demodulator to SYNCHRONOUS. SYNC
TlPdetection wichERO CARRER REF. ONand sound
TRAPS OUT. Set the step attenuator to 1.0 dB attenua-
tion. “to right-hand step chroma peak should be at 105
mEunits.with thezero carrierrefuenoeat lZOIRE units.
Calibrate the vectorscope vector length to the graucule
circle. Set the demodulator to ENV. detector mode. and
the vuwrscope to BEE PHASE.
Adjust DlFF PHASE cone-o] C60 which is accessible
through an opening in the ATM-1600 top panel, to mini-
mize the differenn'al phase reading. See Figure 3-1. Uses
small (flat bladed) screwdriver fur this adjustment.
Switch the demodulatorbetween ENV. and SYNCHRO—
NOUS. SYNC TIP detmion modes and adjust the DIFF.
PHASE control to minimize measured differential phase
in both detection modes. The resulting differential phase
in both detection modes should be less than 0.3°.
22
ATM-1600 OPERATION
_________.__——-—————
noaenaua
ocean-no
nonnunno
Figure 3-1
Adjustment Access through Top Panel
23
OPERATION ATM-1600
_____—_______—___—————
VIDEO WAVEFORM
GENERATOR
J5
VIDEO IN
STEP
ATTEN UATOR
VIDEO OUTJS
UNIT
IN TEST
AURAL IN J10
VIDEO
DEMODULATOR
VISUAL OUT l' "350 ‘N
VIDEO WAVEFORM
MONITOR
VIDEO OUT
IDEO IN
VECTOR
SCOPE
VIDEO OUT
Figure 3-2
video Modumlon Waveform Tom
24
ATM-1600
CIRCUIT DESCRIPTION
____—____.___—-——————————'
4.0 CIRCUIT DESCRIPTION
4.1 Introduction
lnfumation is tttis section describes each module
individually. li‘ a module contains PC bard switch or
jumper options. the locations are ilhtsnted in Section 2.
Schematic drawings have been provided irt this Section to
facilitate undustanding oi“ the equipment
4.2 Chassis
The ATM-loco chassis consisrs of the following: basic
steel enclosure, removable front panel and removable
sub-chassis with +15 VDC universal switching AC power
supply and luck plane board The chassis will accept one
audio/video mmbly with provision for an RF converter
assembly.
Useradjustments totheaudioandvideomodulesaremade
through openings in the chassis front panel, which also
provides for the modulator ON-OFF switch. MDdulatiot't
indicators and the 1? tea point: refer to paragraph 2.5.
Two thumb suews allow removal of the front panel [or
audioneo assembly access or replacements; refu- to
paragraph 2.8.
Non-use calibtadon adjustments for various video and [F
parameters ateaceassible through openings itt theChassis
Top Panel; refer to paragraph 3.12
The internal «18 VDC power supply accepts any input
irom90m760VACJ7tooll-1LNoswitchingor
adjustments to the sub-ehurisorpower supply are neces~
sary. The power supply should he properly fused for safe
operation; refer to paragraph 2.4.
Refer to the schematic diagram of figure 4-1 for power
supply circuit design information. he input AC line
voltage is applied to the inptnrectii'ta' bill and filter C7.
The resulting DC voltage pass to the switching trans-
romer T2 and the switching power MOSFET Ql. The
switching frequency is 30 kHz with a maximum duty
cycle of 8595. The 1? output voltage is rectified and
filtered by D7 and its associated LC network. The result:
ing ell; VDC output at TBZ is set by Will Over-voltage
protection is povitbd by D21 and SCRl.
A srnau portion of theDC voltage is fed back to the ouqaut
voltage sense circuit ml and lCZ which vary the duty
cycle of the current mode controller lC3. 11te controller
supplies gate drive to the MOSFET switch. This voltage
control loop maintainsaconstant voltage at the DC output
rational. TBZ.
Overload promotion is provided by the MOSFET suture
resistor IE and the currenr mode controller lC3. The
voltage at pin 3 of ICJ is monitored and compared to a
level derived from the output voltage sense circuit 1Cl and
lC2.Abnon-nal opa-ating conditions occurwhen the power
supply output is overloaded or if anoint voltage sensing is
lost. Under these conditions the currem mode controller,
IC3 will shut oft'the gate drive to MOSFEr switch Ql.
Input/output connections as well as internal module can-
nections and DC routing are made through a common
back plane board and sub—chassis wiring: refer to Figure
4-1
4.3 Audlo Modulator
Refer to the schuttatic diagram Figure 4-3 for circuit
design and to Figure 2-4 for switch and jumper options
locatirxis.The Audio Modulator isa directFM transmitter
designed to supply an aural IF signal at a frequency of
Mfi MHz for NTSC.
Input to the unit is switchable from basehand audio.
through a balanced. bridging input. to a composite BTSC
signal. through an unbalanced 750 input via SW] and
SW2. The input network are bridged by an audio ampli-
fierUlAthalfeedsanaudiobuft’erarnplifierUlB through
potentiometer Rl. used as a level control (AUDIO DE-
VLATlON, front panel). The audio buffer amp drive: an
AC/DC converter circuit and the modulator VCO. and
providesthepre—emphnis characteristic. The 75 usecpte'
emphasis is removable via SWl.
__________—_-————————
25
CIRCUIT DESCRIPTION
ATM-1600
_____—___——_—_
U9A.U9B.diodesCR3.CR4,0UandGl6foflnl
maiden AC’DC wnvu'tadrcrrit. Thecircrrit canvas
theACaudioinmaDCsisnalmweratert-cfivmpanel
deviarimmera,fimrheouq)utisfedinmU10whk:h
provimtheneeemaryvomgegxinnndleveln-anshxim.
Rsshawomgcmuolmumthelowermdoflhemle
onthedeviafionnletenksfisusedformehighflmd.
m4lfiM1-leCOeondssofarnplifierU8,tankcireuit
[AJndcapaciminlheUBoutpnlcircuiLVamtnrdinde
CR2is usedindleumedcirwitmthevoltzzevafiable
ehmmnflremodtrlninglndiodrcuitisfedfiunmeam
of deviation control R44 through R45 to mi The oper-
nflngfiequenq’oftheVCOisdetermiMdWM.C4f-L
C44.C47.C48.mddlllAistheVCOcentflfiequency
adjunmun on the circuit board.
TlieVCOotrmi‘rrngfoedrt-JbufiermplifierW
which provids pin and isolates the VCO circniu'yi The
R381eveladjustnmtindiell7circuitsetsthemodulamr
IF output to +40 dBmV umrplnel connector I9. (AU-
RALOUD.L7.C52endC53isaparnllelnmedresmunt
circuiladjnswdmulshfl-hmnmeddrmitmm
the U7 onqnn m7Sohnu.
AsampleofflreVCOfllSMI-Izsignalisnkenofi'
directionaltapflandisi’edthroughmflifinQStoPLL
syndresizerU4.11lePu.synthesimalmtakesinputx
from PLDUS anda countdown drmit. The PLD delivas
aclock fieqwteyandneeeswyrefamcedarzmme
synuiesiwfmmlcrymlmflm'mthevidmmodme.
A45.75M]-lzunmodnlatedreferencesipalisfedinwme
U2. 03 countdown cimriLThemnpurof the countdown
circuitisseniw“omin"mflwPILsynniesizer.1hePlL
synmesiwgumtesanmvolngewhiehissentbaek
mvaracmrdiodefitholockflerCOwrputfreq-wncy.
Thusthe4l.?$bfl{zsystemisloekedwthe45.7SW-lz
refereme.
TwoonboardregmnmpvvideflSmdderpmmd
regulate agairmcmentmd input voltage variations. The
main+5VilimlaMfimthedigital+5Vfornoise
reducn‘onprrrposea.
4.4 Video Modulator
Refermtheschunaficdiagunfigureufcrcireuit
drain and to Figure 2-5 fa- xwitch and jumps option;
kmn'mfiteVideodulanmodtfleacceptsabaxband
videoirmnlandgemtesn45.7SM1-izvisualfl=carfieras
fireprimaryoutpm.
mfideoMgfiomwerwpanelcmneunrJSMDEo
N). is fed inrothe two-stage feedback amplifierQi and
Q2.Thisamplifierpmvidsahigh inptuimpuiarwetouie
videomflldhufflersflteinpulvideosiptalfiom the
videomodnlecixcttim
Variable resiserGis afaclory adjustment. together with
Cl;theirptnposeiswboostthehighendof|hevideo
response curve. in suite with R6, R7 is the factory
adjusted video modrrlxtim calibration oontml. R7 ali-
bmtes the from panel video modulation control to 87.51:
with n 1 V p—p video input.
The R7 output is fed in the 03/0: feedback amplifier
whkhmesasabuflerberweenrheinpuivideomdthe
phaseequxfimnwakVideoisumfedmmefiont
panel VDEO MODULATION connol R15. QS and 06
form a feedback pm": amplifia' that pmvides frequency
shaping in emjunction with R19 and C14.
The Q5 Q6 output goes to the main video amplifier. Q7.
08. Q9 and 010. This amplifiexprovides video drive to
the diotk modulator stage.
The synctipclamp. and whine level Clippu' circuitsm
maintedwiflrthema‘xnvideounplifierflhesymtip
clunpciruritrel'mwthesyncdpstnaspecifieDC
referenneleveL
Thewhilelevel clipper Iimitslhewhite level amplitnk m
tharovexmodrflatimofdievideourrierdoesmrtake
plane.
ThesynctipclampcimuitemsistofUl,Qll.QlL The
white levei clippu consisroi’QIS. CRl. CRZ.
____________._—————————
30
ATM-1500
CIRCUIT DESCRIPTION
_____________——-—-_—
Forsyncfipopemfionjrdmvohageisfwmyinl
andvideoisfedwyininfcompmrUl.mU1
vaolugeisoufinedfiomavomgedividam
inclndfi 17mm R113 khdedMONTIOR CAL
mMchcuixboaliklletsmemvolugema
mtedvflwfummlopaflnoffllevideclmpfi-
flu.
ThemwutofoovnpmxxUl,axpin6,goesianllmd
Qlthichactu-syncfipleveldemmdpmvidc a
DCcmecu'msigmlfedblfiklnflnbueon7ll’xmughfl,
18 andRZi.
Insunnmary.mcsymtipchmpcircuitinvnlvuafeedbank
loop fmrn Q7. through QS,Q9. Q10.Ul.Qll Ind 017.
FmthemiwonlL-DCconwimvolmgeixfed
backmlhehxofmwsuthesymn’popenfingpoim
offlleeminuonlo.
“awhimlwechWpumiuinfluememqlumm
asignalpafllfromthte} ammcmm thteO
enfinn-Jnuoughlhispmeloisbinedmdmilmnw
lmgafimlfllaidifimflvideomivemldiodebridgein
fluvidmmodulmr.
ThebmingonlOwulfimitonmodnlan'mdnpmmd
pmvenlscarfiucm-ofl‘mlsedbyovarmodmaxionmdthe
mlfllingdislmkmudsymbm
mmodulafion dcpmjuhewhixelevel clippacimuims
adjusts! by pom-damn R42. a un- saewdriver adjun—
mntonlhecirwilbmrdhbeledwmmLVL
mourn: video amplifiaJm-ntheolo emitter. drives
“Evideomdmlndmfitcmsiningofmlllm
anddiokbridgemoduhlfl'CRS.019.GllO.deRll.
R113,labehdMONl'l'ORCAL.mlheciru|ilbmrd.is
fxlnryndjunedloufibrulhcfindebfidgemgcneflm
87.5'finwduhm'mudxenmdltdvidminwllflelwlhe
ATM-mooqum-wlwdimmmuum
thermistu RT! lupin 3 ofopaalioml amplifiu U43.
ThCRHBIRllZ'RTl canfinafimsflslhcmfmmcvoh-
mauWBmPinthisouwpwidmalow
impedancedlivepoimiotclwmdmuJRCRQand
CRIIjunmkmix-fixedvdmepoinnmfideosignalis
fdwdwodtrfikoffludbdebfidgqnfllejmdonnf
mmCRlO.
WhenfievolnxenfineCRB/Gllojuncfionixequlwme
voltagenlheCR9flRlljmcfithcbridgeishal-rud.
TheRFdfiveomofu-msfmnafiisuncellodoulmd
mwwerremlts.aawllwlwojnncdnns,quumfing
10095 moduluiaumlhelevdsnthejmctionsm
difluull. the bridge is nuanced-flowing the RF drive
mfinpmnmmmmmgemwnwduk
pill Jl-P, flu (VISUALOUT) laminxL The modudalion
mageispopmfimalwflwdifiminlevelbe—
tweentheMIOandGlWCRlljmfions.
Faunzy adjustment C60rmss'l‘6. is an adjnsuble ca-
pacimtuudtohlanceouuhesmficphasemdm
canes differential phase. C60 is adjusted to minimize
Inpmmlhemoduhlimpflcmlagcdewcmrisfileo
uninfl(fiomtheoulpntvideoamplifia).‘rhesi@alisfcd
(hm-13h eminfl' follower. Q22. to diode damm- circniL
CR4.CRSIndCR6.’11wm-qnnohhedinduisaDC
volugepopminnallolhev'fleodrivcinmqfl.
mmoflhediodenixcmmfiist‘edinman
opuafiumlampfifiu.UGB.umdmpmvideavismlindi—
union on the MODULATION fl: Inrgmph indimmron
lhefiumoflheVideodnlamr.
Transislnr 017. stnl Yl. lank circuix inductu' 1.10.
feedback ind-1m!“ LIZ. and (347 comprise a 45.75 MHz
oscillaxnr.’l'h=osdlhlorommgocswbuffuamplifiu
018.
mwfiumplifiummnthema collmjs fled
thoughlbwpasflhu.L13.CSLde53,mdminm
direcfionnlmpsflandTA.“nedimcfimulmpsfintfim
andmufingmustullaw:
T3, 45.75 MHz in ind out.“ SWI. the NEXT]
MswimhonfllePCBisindmepmifimASJSWiz
isffllfimlmdepinll-Hmlhcxurpmelwnmfl
(IFRBO.WheuSWlisintheE)flposific-n.memodnlc
WmexmmlfiJSMI-lszedimnconm
”(ERm.
_______________——-—-—————
CIHCUI T DESCRIPTION
T4, 45.75 MHz to module Pinst-Snnd JZ-C. The feed
totheaudiomoduleusedtolockuptheAumIH-‘genem-
ing circui&
The video modulator carrier drive consists ofbuft‘er am-
plifier Q19 and all compments between T4 and T6. The
circuit supplies CW visual lF catrierdrive to tile video
modulator.
R100. labeled CARRIER DRIVEonthe circuitboard.is
a facuxy adjusted variable resistor that adjusts the RF
drive level to the modulator. This level is set In a pre-
scribed value to maintain the lowest distortion.
The circuit containing QZOand 021 andassocietedcan-
ponents. including capacitors and inductors leading to the
module pin ll-P output, is the modulated visual ll-‘output
amplifier
The modulated output fiom the diode bridge in the video
modulator circuit is fed In differential amplifier QZO and
(221.
Theamplifieroutputis taken from thecollectomt‘QZOand
fed to output level potentiometer R105. a factory adjust-
ment labeled OUTPUT LV‘L CAL on the circuit board.
R105 is associated with coupling u-ansformer 17 which
goes intolowpass filterC64, C65, C66, L16 andLl7l The
low pass filter output goes to module pin 11»? which is
connected to rear panel 111 (VISUAL OUT). R105 is
adjusted to obtain u +40 dBmV output.
Q40 amplifies visual IF. Q42 amplifies atrial IF. and with
jumpers 110 pins 2-3 and 112 out, visual and aunt IF
signals are fed through directional tap transformer TlO.
TlOaddstheauralDTtothevisuallFbeforetheSAWlilter,
1111 The combination of components in theQ40 emitter
circuit helps to flatten the response over a 4047 MHz
bandwidth.
The JlOandJleumpers musedtoadd dumuahignal
tothevisuallFsignulasl’ollowszllO pinsZ—SandIlZout
connection adds theaural signal tothevisualIFbeforethe
A TM- 1 600
SAW filter. AJlOpins l»2 andJIZ in connectionadds the
aural signal afterthe SAW filler. In some applicatimts, the
SAWfilterbandpass is toonanow to allowpassageofthe
amalsig-na]; then thejumperleOpins l-ZandJl2inate
used.
Transistor Q14 fonnsan IFamplifier thatcompensatesfor
SAW filter losses. Q14 also forms a buffer between the
SAW filter and the LC filter in the Q14 collector circuit.
The trimmer potentiometer. R176 allows a small adjust-
ment in gain tomaintain unitygain throughout the module
amplifier circuits.
The LC filter, L36, L37, C119. C120. C121, C122. and
C173. compensates for the SAW filter's slope of the
passband response. The pi pad. R183, R184, and R185
helps isolateanypemirbations caused by the composite H:
outputs affecting the IE filter.
The transformer T5 forms a 3 dB signal splitter to drive
U20andU21t Thesearnpliliers boost the signal toaMO
dBmV outputatpinle-ISandJl-IG
At pin Jl—K aural 1]: input. the pi pad R189, R190. and
R191 insure agood return loss and isolates the broadband
aural lF amplifier C242
Following Q42 isaelectronie attenuator circuit consisting
ofC133. C139, CRZD. CRZI, 1.41. R197 through R205.
R205 is the AURAL CARRIE? frontpanel adjustment for
setting the level of the aural [F carrier referenced to the
visual HJ carrier.
On the reurpaneLJlo monitors thepreseneeofvideo on
15, VIDEO lN. Output from J 16 is positive logic TTL.
Output is high Willi video input (+5 V through [It ohm
source) with an intemal pullup resistor. Out-put is low with
no video input (04 Vmaximtmt). Resistive loads down to
zero ohms are acceptable, An LED lamp may be con-
nected between the Video Sense terminal and ground for
remote indication of video status.
A TM- 1600
4.5 Baseband Encoder Interface
mbeusedmahmebmdvideoscmmblingsyswmjaseband
encoded scrambling requires a hasebnnd encoder inter-
face board assembly part number 9001-2037 in the video
modulatu' module. This assembly replaces the normal
sync tipclamp circuit witha gated clamp which is enabled
only during the appmpriate time interval for video sync.
Timing inl‘omtation is supplied to the modulator by an
encode gate signal originating in the baseband encoder.
The encode gate timing pulses triggera series of mesh»
minimums
vitreous-men
urn-madness
CIRCUIT DESCRIPTION
timers and associated electronic switches in the encoder
inlafaceboardassemblyi Thisproeeugateson theclamp-
ing circuits during the amused sync interval.
Refer to the block diagram, Figure 4-5, and timing dia-
gram, Figure 445.
Central tothecpemian of the baseband encoderintcrface
assembly is acurrentmode (Norton) amplifiu, U4. acting
as a sync level sensing feedback element between the
mndulalcr's video amplifier output and the bias input.
This circuit automatically adjusts the sync clamping level
so that sin-rent thmugh R10, into the non-inverting input
mcwnwmnsu
unwEthonfi
Flgum 4-5
Baseband Encoder Imertace Assembly, Block Diagram
37
CIRCUIT DESCRIPTION
A TM- 1600
ofU4.matchesthereference inverting inputcumlufU4,
In the non-scrambled mode the refinance current to theU4
inverting input issetbyvarinbleresistorRIZin setieswith
R11. The encoded gate line remains inactive. (high) thus
preventing operation oftheone-shot timers and electronic
switchm. Electronic switchSl isclosed; $2, 53 and S4 are
open. allowing U4 and associated components to act as n
conventional sync tip referenced clamp circuit. Variable
resistm’RlZ filibnxes the video bias Levelmsrrquimd for
vent-at
87K: LINE a
mum am
normal sync by adjusting the reference cunent into U4.
In the scmnblul mode. the encode gate line is activated.
This causes operation of the one-shot timm and the
electronic switches, as indicated in the timing diagram.
At the begitming of the vulical sync interan, sync is not
suppressed and the encode gate line remains inactive.
Beginning at line 23. sync is supprwsed by the encoder
andtheencodegatelineisdrivenlnwasshowninthe
timing diagram.
ZusEC
Flgure 4—6
Buseband Encoder Imerlaee Assembly, Tlmlng Diagram
ATM-1500
CIRCUIT DESCRIPTION
§———_——__
At the initiation ofsync suppression. electronic switch 81
opens fora time period equal tothe low state of the enable
gate
Electronic switch 52 closes for two microsecond: 53 and
S4 close for ten microseconds. This switching sequence
closes the feedback loop around U4 and the integrator
circuit. U6. 6 and R17. At this time. the U4 inverting
input reference ctrrrent includes R11/1112. R13, and U6]
R14 current paths.
The feedback loop circuit, including inleyator U6, stabi-
lizes with the sync clamp referenced to the suppressed
sync level established at the first line with suppressed
sync. The active video component remains at the me
hiaslevelaswidrunscmmbledsyncjuringtheremninder
of the video frame, electronic switch 51 remains closed
and S2 remains open. Further switching of SI and 52 is
inhibited until one-shot U2A can reset during the next
vertical interval when the enable gate becomes inactive
To maintain clamping on the suppressed sync amplitude.
electronic switches S3 and S2 continue to close for a
period of tenmicroseconds during each line in responseto
the encode gate signal.
4.6 Aural Subcarrier Processor
Refer to the schematic diagram in Figure 4-7 for
circuit design information. The Aural SubcarrierProces-
sor converLs a 4.5 MHz aural subcarrier input to 41.25
Mqusing45.75Ml-lzasthereference.'lheainalsuhearrier
input may be included with a composite NTSC video
signal.
The4.5 lvfl-lzinputfrom 13. BTSC IN (SPECIAL). on the
A'l'M-lfiOOrearpancl. passes through an initial 45 MHz
band pass filter, FL]. The filter output goes to the ampli-
fier stages of Q7, Q8 and Q9. L8. L9 and associated
components make up the second4.5 MHz band passfrlter.
The QlO/Qll circuit is a limiter followed by a low pass
filtu' consisting ole 1, C23 and C24. This filter attenu-
ates harmonics of 4.5 MHz produced by the QlOfllll
limiter.
U1 is a four quadrant multiplier used as a mixer. Aim
filtering and limiting. 4.5 W-lz is fed to pin 1, ofUl. A
45.75MHzCWs'g1talisfedtopinSofUl vixl’land
transformer 13.111esignalsaremixedandthelll output
signal. on pins 6 and 9, is processed tlu'ough circuits that
tune to the 4t.25 MHz dilference frequency.
ComponentsLthhmughLl4andC29 through C35 form
a4l.25 Mszandpass filter.'l'hesignalisthenamplifwd
ItyU2,thegainofwhichisdetenninedbytheDClevelset
by R51. the output level control. L16, R54, C39 and C40
fonna4l.2‘i bandpassfilterthatredueessecondandthird
hannonim. The 4125 MHz output is sent to the video
modulattl. via PI.
11“ a composite N'l‘SC video signal is used with the 4.5
Wizaumlsubcarrierinpumhesignalfeeds atwostage
feedback amplifier. 01 and Q2. A terminating resistor.
R1, provides a 75 ohm input impedance to the video
source. R2 sets the module video output level for unity
gain C48 is used to flatten the output video frequency
response
Theamplil'teroutputgcestoavideo filtcreonsistingof'l‘l,
ll, L3 andalhmughcfi mfilterremoves theatmil
subcarrier at 4.5 MHz. Following the video filter is the
phase equaliza- network
Tltephase equalizer-network consists of components C50,
1.18. RM, M through L7 and C7 through Cl 1. The
network corrects forany group delay distortion caused by
the preceding video filter.
Theoutputfrom the phaseequalizerfeeds the output video
amplifier, U4. The amplifier output goes to 14, SCA IN
(SPECIAL). m the ATM-1600 rear panel.
An on-hoard voltage regulator, U3 provides a +l5 VDC
output toregulate against currentand input voltage varia-
tions.
“E
A TM-1600
PARTS LIST
5.0 PARTS LIST
5.1 Introduction
This Section of the manual provides a listof parts for
each assembly covered by this manual. The list contains a
break down ofeacil assembly by oompanenlpannumber.
component description and reference designation. Figure
5-1 shows an exploded view of the ATM-1600 and iden-
tifies majorsubassemblies. Pam location diagrams. Figure
5-2 for the Audio Modulator. Figure 5-3 For the Video
Modulatnrundl-‘igtue 5-4 fortheAmal Subcarrier Proces-
sor have been provided lo assist in locating individual
components.
The parts lists contain many abbreviations. Some of the
abbreviations used in this list are as follows:
BD Board
STL Steel
ASSY Assembly
CER Ceramic
Fla) Fixed
NET Metal
VAR Variable
RAL Radial
ADJ Adjustable
5.2 Ordering Information
When ordering replacement parts, give the quantity. ref-
erence designator, part number and description for each
item ordered. The part that will be supplied against an
orderforareplaoementitem maynotbeanexacrduplicate
of the original part; however, it will be a satisfactory
replacement differing only inminormeehanical melectri-
cal characteristics Such differences will not impair the
operation of the equipment.
Calel maintains a complete stock of replacement parts for
your Catel equipment. We recommend ordering all re-
placement pans from Care] to ensure compatibility of
components and having your order filled promptly.
Order from:
Cate] Telecommunications
4050 Technology Place
Fremont. CA 94537-5122
PART NUMBER DESCRIPTION
9001-2031-XX ATM-16M.FINAL ASSY.
REFERENCE DESIGNATOFI
2832-0802 NUTJGR6-32X5/l6A/F5TEHJCADPL.
6012-0365~XX PANEL ATM-1600
6014—0084-VV MODULE ASSY.CHASSIS,T.V.MODUIATOR
6033—01 15 FAB HANDUE AM MODULATION
6820-0421 NU'I‘J-IEX 4-40 STDPATT STL/ZlNC
6910-0003 [ABEL MODEL/SERIAL No.
7112—0408 SCRPAN/PHEJM-wxlfl STUZNP
7122-0403 SCREATIPHILM-40X3/ 16 STL/ZNP
7122-0606 SCRflT/le..#6-32X3/8 STUZNP
7212-0605 SCRPHIL/PAN 6-32X5/16 STL/l IN/WS
7923-0023 CABLE Powmz CORD 3-COND DETACHABLE
8000-4055-YY ASSY MODULE POWER SUPPLY, ATM-1600
8000-2610 ACQiSSORY KIT
9001-2031»XX ATM-1600 FINAL ASSYDWG
“fi—
41
PAFITS LIST ATM-1600
___—__—_—
PART NUMBER DESCRIPTION REFERENCE DESIGNATDR
8000-4055YV ASSV MODULE POWER SUPPLY, ATM-1500
5901-0340—YY ASSY PCB, BACK PLANE, ATM- 1600
5501—0040 SWITCH, ROCKER SPD’I‘ 5A120V PNLMT
5601—0023 CONN., AC POWER, FILTERED 614
5602—0041 P’WR SPLY. SGL OUT 18V/1.25A 90-260 VIN
6012—0366-ZZ REAR PANE. FAB, T.V. MODULATOR
7612—0404 SCRI BmDER/PHIL 4-4-Xl/4 STLflINC
6014-0083 CHASSIS, BKT. CRS. TV NDULATOR
7112—0204 SCR, PAN HD. PHL If2-56X1/4LGN ZNPL
5101—0255 ASSY CABLE, 2 CONDUCT ORS
5105-0256 ASSY CABLE. 2 CONDUCTORS
7301-0003 TUBING. HEAT SHRINK. 1/8D BLACK
7910-2005 WIRE. STRANDED. ZOCA1 7/28 PVC GRN
5227—0020 TFJIMINAIS SOLDER
6821-0004 NUI' 3/8" X 32 X 3 1/2 THK. STUCADPL
5562-0001 RISE, IRA SLOW BLOW
5901-0340-VY ASSV PCB BACK PLANE. ATM-1500
1007-5103 CAP CER 15V DISC .01 UF 2074: 50V C1
4612-2106 INDUCI‘OR FXD MOLDED 10 UH 1096 L]
4707—0531-08 INDUCI‘OR AIR CORE 8T 1/4 226A L3
52160022 CLIP LOCKING 2 PIN J 1
5216-0039 CONNECTOR “P PCB 17,819,101 1,12, 13,17
5216-0092 CONN.COAX..RF.PCB.PRES S-FIT.CONLBNC I3,4,S,6
5216-0105 CONN CARD EDGE RQ’I‘ 2X22 .156 ST 315
5216—0107 CONN CARD EDGE 20 PIN DUAL 114
522}0012 TERMmAL BLOCK 3POS 250CIC ST I2
52230036 TERMINAL BLOCK ZPOS SCR CONN 116
5900-0340 FAB PCB BACK PLANE
7921—0012 CABLE COAX SEMI—RGDJS OHMDSSDIA
550241041 ASSV. POWER SUPPLY. SGL OUT 18V11.25A 90-260 VIN
(Non—Camel assembly, information pmvided for leference only: may only be ordered from Cale] as a complete
ascmbly under PIN 5602-0041)
JUNIPER WIRE I2
JUNIPER WIRE ll
RESISTOR CARBON FILM‘ 57K 2W R2
RESISTOR CARBON FILM, IOR. 1/4W R19
RESISTOR CARBON FILM, 15k, 1/4W R52
RESISTOR CARBON FILM, IOOR, 114W R7.12
RESISTOR CARBON FILM 330k 1/4W R10
RESISTOR CARBON FILM 470R I/4W R14
—___..—_—————-——
42
ATM-1600 PARTS LIST
PART NUMBER DESCRIPTION REFERENCE DESIGNATOR
5602-0041 ASSYI POWER SUPPLY, SGL OUT 1BV/1.25A 90-250 VIN (Conn)
RESISTOR CARBON FILM 316 UN R13
RESISTOR CARBON FILM 3x9 1/4w R15
RESISTOR CARBON FILM 5x1 I/4w 1263.9
RESISTOR CARBON FILM 27K 1/4w R 17
RESISTOR CARBON FILM 11:2 1/4w R11
RESISTOR CARBON FILM 4R7 1/2W R21
RESISTOR METAL FILM 330R 2w R16,20
RESISTOR WIRE WOUND NF 0R56 1W R3
VRZK VRI
NTS SRO R1
CAPACITOR H. SM 4711 25V C8
CAPACITOR EL RME lOOOuZSV C17,18
CAPACITOR EL SME 100011 25V C202]
CAPACITOR "TANTA' lu. 16V CIs
CAPACrIOR EL SMG 100,14oov C7
CAPACITOR "X" Ju 250V C1
CAPACIIOR "Y" 2200va cs
CAPACITOR POLYESTER 152 sov C4
CAPACITOR POLYESTER 103 sov C11,12,l3.14
CAPACITOR CREAMIC 1m 111= 109; 500V
SWITCHSLDJE T.V.
CAPACITOR. 1675PF
CAPACITORMCAJEI’F
REFERENCE DESIGNATOR
L19,13
L11,39,43
LBJ-1.1518 L30.31.32 1140.42
1.34
L20
L4]
L23
L16
L17
IA
I3
1255.73.10
1557.10
I9,16
18.2
YI
Q14,18,19,20,40. 42
FOR 13
FOR I3
C2.77
C60
C19,15,83
FOR Q17,21 AND R213
CR21.20
(3189.10.11
U6,13
U1
U9
U8
RT]
mu
C17
6119
cs:
C53.65
C1,84,115
c114.117.133
SW1
C4
C3
__—_—____————__
5D
ATM-1600 PARTS LIST
_____—______—————-_—
PART NUMBER DESCRIPTION REFERENCE DESIGNATOH
5901-0343 ASSY PCB ATM-1SDOVIDEO MODULATOR (com)
9000752 CAPAcrromnm‘ cum
90007524 CAPACITOR MICA,110PF cs
9000753 CAPAC1TOR233PF C78
9000754 CApAcrroa,427P1= C12
900075-5 CAPAcrmx.575m= C9
900015-9 CAPAcnoR5501=1= C6
9000954 SAW mm 44.025 1111251151 111
2061-5243 RESISTOR243K.1/4W.l% R109
2061-6280 RESISTORJSOKJ/AWJ‘b R107
2061-3432 RESISTORASZ Ol-IMS.l/8W R21
9001-2037 ASSY PCB BB ENCODER INTERFACE FOR ATM-1600
153525-2 BASEBAND ENCODBI
5101-0251 ASSY CAME 4 PIN CONNECTOR
6820—0421 NUTJ-IEX 4-40 STDPATI‘ 511/ch
68420002 WASHER FIAT M STL
6851-0017 STANDOFF 4-40 1/4 HEX 1/‘2 LGJ’HRD
6852—0039 SPACE! 1/4112) 3/8 0D.,.016 THK.
711204 14 SCRPANmm..#440X7/8 STL/ZNP
716240404 SCR BRIDE/PHIL 4-40XII4 STL/LINC
1536622 ASSY CABLEJ PIN CONN.
153525-1 BASEBAND ENCODER INTERFACE
1015-3206 CAP MICA DIPPED 200PF 591 500V (22.4
1015-4104 CAP MICA DrPPED lOOOP’F 591: 100V C35
1219-0023 CAPAL 100UF20%25V zooowssc c1
1535201 BDBASE BAND ENC WAGE
153527 SCI-EMATICBASE BD ENC INTFJZFACE
153661-1 CONN ASY.4 PIN
153662-1 COMM Asyz PIN
2055-4220 RES m: cm FILM 1/4w 212K OHM 556 R4
2055-4300 11115 FXD CARE FILM 1/4w 3K OHM 551: PR]
2055-4560 RES FXD CARE 1711111 1/4w 516K OHM 595 1110.11.17
2055-5100 RES Hm CARD FEM 1/4w 10K OHM 591, 10.56.73
2055-5150 mas FXD CARE 1-111 1I4W15K OHM 555 ms
205545270 RES FX'D CARE FILM l/4W 27K OHM 5% R9
2055-5750 as m CARE 1:11.14 1/4w 75x OHM 57.7 R14
20556160 RES FXD CARB FILM 1/4w 160K OHM 591, R13
2226-0016 POT SK 1nw 1091:
31200003 mom: 1144154 CR]
33230014 1c DIG MULTIVIB MC1452813 DUAL cmos 112
33320003 1c DIG ANALOG sw CD4066 QUAD MOS us
_________————-——————'
51
PARTS LIST
PART NUMBER
DESCRIPTION
153525—1 BASEBAND ENCODER INTERFACE (com.)
860010415
860010419
86001044
860010—84
360049-1 12
860049413
860049414
8600-19-50
36008540
860085-9
900034424
900048-37
900048-57
CAP CER ML X7R DIPPD .01 UF.10% 50V
CAP ELECTRADIALJUFJOV
CAPACI'I'OR,0.1UF,100V
CAPACI’I'OR.0.33UF
1C DIG MULTIVIB 74C221 DUAL CMOS
1C LIN OP AMP LM359N
IC LIN OP AMP OP081-1P VS=18V
1C DIG NAND 2-IN CD4011AE QUAD
SOCKETJG PIN DIP
SOCKET,14 Pm DIP
RPS FXD CARE FILM 1/4W 120K OHM 5%
CAP CER NPO DISC 33 PF 5747 500V
CAP CER XSP DISC 220 PF 101: 500V
9001-2038 FINAL ASSV. AURAL SUBCARRIER PROCESSOR
4200—001
6822—0620
71 12-0604
5901—0356
51202050
SHIELD CAN
NUT
SCREW
ASSYA PCB AURAL SU'BCARRIER PROCESSOR
ENC CABLE
5901-0356 ASSV. PCB AURAL SUBCARRIER PROCESSOR
1156—4107
1256—1106
1219-0015
1095-1826
900048-28
101142156
900048-32
1045-1686
1011-2276
1011-2366
1046-2396
1011-2476
1011-2826
1011-2916
1011-2686
1015-3106
1011-3126
CAPCER 1000 PF
CAP TANT IUF 35V
CAP ELEC!’ 1000 UF 16V
CAP CER 82 PF
CAP CER 13 PF
CAP MICA 15PF
CAP CER 20 PF
CAP CER 6.8 PF
CAP MICA 27 PF
CAP MICA 36 PF
CAP CER 39 PF
CAP MICA 47 PF
CAP MICA 32 PF
CAP MICA 91 PF
CAP MICA 68 PF
CAP MICA [00 PF
CAP MICA 120 PF
ATM-1600
REFERENCE DESIGNATOR
C6
C8
Ul
U4
U6
U3
R3
C10
C11
(3222516272856373841,
42.4352
C44.47
C1.49,12,13
C19
cm
(2132
(3034
C16
cue
C3232A
C17,20
C5.1439
C29
(34,40
ce,4s
C10
C35
___—______________——————
52
ATM-7500 PARTS LIST
______________.————————
PART NUMBER DESCRIFTKON REFERENCE DESIGNATOH
5901-0356 ASSY. PCB AURAL SUBCARHIER PROCESSOR (CONTJ
1015-3364 CAP MICA360PF C]
1011-3476 CAP MICA 470 PF C15
1015-3516 CAP MICA 510 PF
1182-4393 CAP POLY 3900 PF C8
90004449 CAP 0.68 PF C31,C33
2601-0005 RES 19191; 1W R55
2055-2750 RES 75 (2 R23
2055-3200 RES 200 (2 R36
2055-3220 RES 220 0 R7
2055-3300 RPS 300 0 R45
2055-3470 RES 470 0 R45
2055-3510 RES 510 9 R9
2055-3560 RES 560 0 1144.19
2055-4100 RES 1K 0 R6.S.,22,25.26,27,31.3753,54
2055-3100 RES 100 Q R48.13
2055-4150 RES 1.5K!) R24
2055-4360 RES 3.6K (1 R41
2055-4430 RES 4.3K!) R42
2055-4470 RES 4.7K Q R3050§2
20554330 RES 33K (1 R47
2055-4680 RES 6.8K 9 R38
2055-5100 RES 10K 9 R35.39,40.43.46.49
2055-5150 RES 15KQ 1132.33
2055-5470 RES 47K (1 R29
2055-6100 RES 100K 9 1128.34
20612750 RES 75 Q 1% 111.1620
2226-0026 VAR RES 1K 0 R2
2226-0014 VAR RES 10K 0 R51
4612-2106 IND FXD MOLD 10 UH L17
4602-1226 1ND FXD MOLD 2.2 UH ' L15
4612-2475 IND FXD MOLD 47 UH Lll
4612-2825 1ND FXD MOLD 82 UH L10
151757-17 IND AIR CORE 171" L16
4701-2006 1ND AIR 6T 1/8D 21) AWG L1
4850-7535 35'1' 4130 BIFILAR TWIST. 27.7 UH 144
4852-2820 20 VII 1128.2111-1 1.5.6
4852-3235 35 1m $132. 516UH L7
152492-13 1ND POT CORE L8
152492-16 [ND POT CORE L9
153316—16 1ND VAR 16.5 T L12.13,14
152492-8 DID POT CORE L2
PARTS LIST ATM-1600
_________’___._————————__
PART NUMBER DESCRIPTION REFERENCE DESIGNATOH
5901-0356 ASSY‘ PCB AURAL SUBCARRIER PROCESSOR (con-r.)
152492-11 IND POT CORE 1.3
5610411984 TRANSFORM POT CORE T1
1523301 TRANSFORM T2
15011101 TRANSFORMER 13
3231-2027 TRANS MPS 6521 01.7
3241-2006 TRANS MIPS 6523 (22.4.6
2N5088 TRANS 2115088 0119.10.11
3311-0008 1c LINVREG LM 78l5 u3
33120009 IC MULTIPLE—R MC 1496 Ul
860049411 1c 1.111 AMP CA3028 U2
5601-0020 mm 415 MHZ BPF FLl
5222-0037 JUMPER JACK 3 POST J2
5222-0005 JUMPER J2
5900-0356 FAB pea ATM-1600 AURAL SUBCARREER PROCESSOR
2055-4240 RES 2.41: n R3,s.11
2055-4120 RES 12K 0 11121021
20554130 RES 1.111c 11 R18
2055-3390 RES 390 9 R17
2055-1680 RES 6.8K 0 R14
2061-3453 RES 453 0.11: R15
11705333 CAP 033 UF C50
1219-0029 CAP ELECT 100 u1= c51
1256-1477 CAP mm 4.7 UF C53
133-0002 CAP ADJ 1040 PF c4s
4601-0226 mmrxn MOLD 221111 1.13
EL2020 1c va0 AMP 114
3164-1626 DIODE 1N4735A 01
8000-2610 ATM-1600 ACCESSORY KIT (F CONN)
5120-1060 CABLE. COAX 6.00“ (2) F CONN
5211-0026 TERMINATOR MALE BNC
6910-0015 PACKING SUP
7157-1010 SCR. PHIL W/NYLON WSHR 10-32 X 5/3"
7600—0029 PLASTIC BAG. 9" X 12" X 4 MILRECLOSABLE
5218—0028 TERMDIATION. 75 OHM. F DC-SSO MHZ
ATM-1600 PARTS LIST
_____—__._—-_———————
PART NUMBER DESCRIPTION REFERENCE DESIGNATOR
8000-2611 ATM-1600 ACCESSORY KIT (ENC CONN)
5120-2050 CABLE, COAX 6.00" (2) BNC CONN
5211“ "TERMINATOR MALE ENC (2)
6910-0015 PACKING SLIP
715741010 SCR. PHIL W/NYLON WSHR 10-32 X 5/8"
7600-0029 PLASTIC BAG, 9" X 12" X 4 MIL RECLOSABLE
PARTS LIST
ATM-1600
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Figure 5-1
ATM-1 500 Final Assembly
Internal View
“SSY. Sifll—fl’llldflv.
Flgure 5-2
PCB Parts Location Diagram
Audlo Modulator
Source Exif Data:
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