addendum · dcs-601 ~ee attached. digital ......typical dsc-601 digital·carrier system installation...

..

April, 1979 C-79-500-1944-3

~EE ATTACHED. \ADDENDUM ·

-DCS-601

WABCD ""V"+~

SERVICE MANUAL 5926

DIGITAL CARRIER SYSTEM .

*********

OPERATION & MAINTENANCE

WESTINGHOUSE AIR BRAKE COMPANY UNION SWITCH & SIGNAL DIVISION Swissvale Post Office, Pittsburgh, Pa. 15218.

An American-St.andard Company

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SECTION

I

II

III

IV

v

VI

TABLE OF CONTENTS

TITLE

INTRODUCTION ••• 1-1 General •.•• 1-2 Purpose. 1-3 System Description

. . .

PRINCIPLES OF OPERATION .•• 2-1 Introduction • • • • • .••.• 2-2 DCS-601 Transmitter Circuit

Functional Description 2-3 DCS-601 Receiver Circuit

Functional Description ••...• 2-4 Modem Functional Descrition ..• 2-5 Pad Boards • . . . • .•.•••

INSTALLATION . . . . . . • • . . • 3-1 General. • ..•.•.••• 3-2 Mounting . . . • •. 3-3 Printed Circuit Boards .•• 3-4 Power Requirements .••...••. 3-5 Terminal Board Connections •.•

FIELD MAINTENANCE ..... . 4-1 Introduction 4-2 Test Equipment 4-3 Preliminary Test Procedure 4-4 Carrier Test Set

SHOP 5-1 5-2 5-3

MAINTENANCE ••.. Introduction .... Test Equipment Printed Circuit Board

Maintenance Procedures ••..•. 5-4 5-5 5-6 5-7 5-8

Transmitter Filter (N451054-76XX) Transmitter Oscillator (N451054-77XX) Receiver Filter (N451054-83XX) ..•. Receiver Demodulator (N451054-87XX) • Data Regenerator (N451054-85XX) •••

PARTS LISTS .....••. 6-1 General •..••••. 6-2 Using the Parts Lists.

. . .

PAGE

1-1 1-1 1-1 1-2

2-1 2-1

2-1

2-1 2-2 2-24

3-1 3-1 3-1 3-1 3-1 3-1

4-1 4-1 4-1 4-1 4-2

5-1 5-1 5-1

5-2 5-3 5-17 5-25 5-35 5-45

6-1 6-1 6-1

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FIGURE

ii

1-1

1-2

2-1

2-2

2-3 2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-11

2-12 2-13

5-1 5-2 5-3 5-4 5-5 5-.6 5-7 5-8 5-9

5-10

5-11

LIST OF'. ILLUSTRATIONS

TITLE

Typical DCS-601 D.igital Carrier System Block Diagram •••••••••••

DCS-601 DJgital Carrier System • • • •

DCS-601 Transmitter Functional

PAGE

• 1-2 • • • 1-3

Block Diagram • • . • ·• • • • • • • • • • 2-2 DCS-601 Receiver Functional

Block Diagram • • • • • • • • • • 2-3 Terminating Data Modem Configuration .••• 2-4 Terminating Data Modem.Functional

Schemat,ic . • • • • • • • Bridging Data Modem Functio.nal

Scnematic •••....•.•• Bridging Data Modem Functional

Schematic ••.••.••.•. ·· Amplifier Data Repeater Modem

Configuration ..•..•••..

2-5/6

• • 2-7

• 2-9/10

2-11

. 2-13/14 Amplifier Data Repeater Modem

Functional Schemat.ic (Sheet 1 of 2) Amplifier Data Repeater Modem

Functional Schematic (Sheet 2 of 2) •.• 2-15/16 Regenerative Data Repeater Modem

Configuration ...•..••• Regenerative Data Repeater Modem

• 2-18

Functional Schematic (Sheet 1 of 2) .•. 2-19/20 ~egenerative Data Repeater Modem

Functional Schematic (Sheet 2 of 2) ..• 2-21/22 Regenerative Data Repeater Timing

Diagram •...•••••.• Voiceband Data Modem Configuration Voiceband Data Modem Functional

Schematic (Sneet 1 of 2) ••• Voiceband Data Modem Functional

. • 2-23 . 2-24

•• 2-25/26

Schematic (Sheet 2 of 2) ••••.•..• 2-27/28

Transmitter Filter,Board Layout ...•.• 5-6 rransmitter Filter Schematic Diagram. • 5-15/16 Transmitter Oscillator Board Layout •••• 5-20 Tr~nsmitter Oscillator Schematic Diagram •• 5-23/24 Test Setup.No. 1, Receiver Filter •••.• 5-25 Test Setup No. 2~ Receiver Filter . 5-26 Receiver Filter Board Layout. • • • 5-28 Receiver Filter Schematic Diagram •••.. 5-33/34 Typical Circuit Waveform, Receiver

Demodulator TPl ••..•••.•••.• 5-36 Typical Circuit Waveform, Receiver

Demodulator TP6 . . • . • • • . • 5-36 Typical Circuit Waveform, Receiver

Demodulator Pin 11, TP9 ••...•••. 5-37

FIGURE

5-12 5-13 5-14 5-15

5-16

5-17

5-18

5-19

5-20

5-21 5-22

6-1

6-2

WRBCD ~

LIST OF ILLUSTRATIONS (CONTINUED)

TITLE l?AGE

Receiver Demodulator Board Layout •••••• 5-38 Receiver Demodulator Schematic Diagram • 5-43/44 Data Regenerator Test Setup. • • • • • • 5-46 Typical Circuit Waveforms, Data

Regenerator Test Setup •••• Typical Circuit Waveforms, Data

• • 5-48

Regenerator TPlO, Pin B • • • • • • • • • • 5-49 Typical Circuit Waveforms, Data

Regenerator Pins Band K Typical Circuit Waveforms, Data

Regenerator Pins Kand M ••• Typical Circuit Waveforms, Data

Regenerator Pinc, TPlO, No. 1 Typical Circuit Waveforms, Data ~· Regenerator Pin C, TPlO, No. 2 ••• Data Regenerator Board Layout ••• Data Regenerator Schematic Diagram

Six-Board Diagram

Ten-Board Diagram

Cardfile Parts Location

Cardfile Parts Location

5-50

• 5-51

• 5-52

. • • 5-53 • • . 5-54 ••• 5-57/58

. 6-2

6-6

iii

1-1 GENERAL

SECTION I INTRODUCTION

WABCO 'V'~

This manual is provided as a guide for the installation, operation, and maintenance of the WABCO DCS-601 Digital Carrier System. A functional description of the system and each of its major components is given in this section.

1-2 PURPOSE

The DCS-601 Digital Carrier System provides digital data communications between master digital equipment and several remotely located digital equipments. Communications are accomplished by frequency modulation of a carrier by digital data, transmission of the frequency-modulated carrier through a transmission line, and demodulation of the frequencymodulated' carrier at a remote location. The availability of several carrier frequencies, bit rates of 600, 1200, or 2400 bps, and the ability to communicate over several carrier frequencies through a single transmission line, provide versatility to enable application for large, as well as, small system operations.

1-3 SYSTEM DESCRIPTION

The DCS-601 system incorporates five basic modem configurations. The requirement, location and number of modems are dictated by the type of interfacing desired, distance from one remote location to another, djstance from the master digital equipment to the first remote location, and the transmission line. A specific system is tailored to meet the physical and electrical requirements of a ce~tain area. A typical DSC-601 Digital·Carrier System installation is shown in figure 1-1. Digital information from the master digital equipment is routed to the terminating data modem for carrier modulation. The carrier modulation (FSK) frequencies are then routed through the transmission line to the appropriate remote location where the bridging data modem demodulates the FSK signal and routes the digital data to the associated digital equipment. In cases where long transmission line lengths are required, the amplifier data repeater is employed to boost low FSK signal levels. The regenerative data repeater is employed where extremely long transmission line lengths and electrically noisy environments are enco~ntered. Refer to table 1-1 for system specifications.

5926, p. 1-1

WABCD ~

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TERMINATING DATA

MODEM

• I DIGITAL DATA

H

MASTER DIGITAL EQUIPMENT

T NSM II{ RA ISSION LINE

I AMPLIFIER

DATA REPEATER MODEM

BRIDGING DATA

MODEM N0.1

REMOTE

J I DIGITAL

EQUIPMENT NO. 2

DIGITAL -DATA REMOTE

REGENERATIVE DATA REPEATER

MODEM

DIGITAL EQUIPMENT NO. 1

-

--

TO OTHER REMOTE LOCATIONS

-

BRIDGING DATA

MODEM NO. 2

DIGITAL DATA

j •

Figure 1-1. Typical DCS-601 Digital Carrier System Block Diagram

1-4 MODEM DESCRIPTION

\

' \ \

Each of the DCS-601 modems is enclosed in a standard 19 inch rack-mounted housing, equipped to accommodate either six or ten printed circuit boards as shown in figure 1-2.

Interfacing and power connections are made to a terminal board mounted on the rear panel. Each modem incorporates a front panel test switch and jack utilized for testing purposes. Surge suppressors, mounted-on the rear panel of each modem, are provided for protection from transmission line transients. Individual descriptions of each modem are provided in the following paragraphs.

1-4.1 Terminating Data Modem

The terminating data modem provides carrier modulation for data transmission and carrier demodulation for data reception. This modem is always placed at the end of the transmission line.

5926, p. 1-2

WABCC ~

Ten-Board Card File

Typical Six-Board Card File

Figure 1-2. DCS-601 Digital Carrier System

5926, p. 1-3

WABCD ~

1-4.2 Bridging Data Modem

The bridging data modem performs a function similar to the terminating data moqem except, it is placed in parallel to the transmission line and is the basic modem employed at the remote digital equipment.

1-4.3 Amplifier Data Repeater Modem

The amplifier data repeater modem is a selective frequency amplifier designed to boost signal levels to an acceptable range whenever the signal level is low due to the transmission line losses and the attenuation of the bridging data modems.

1-4.4 Regenerative Data Repeater Modem

The regenerative data repeater modem is similar to the amplifier data repeater modem; however, in addition to providing signal amplification, it employes a regenerative logic uriit to remove bias and timing distortion from the data.

1-4.5 Voiceband Data Modem

The voiceband data modem is similar to the terminating data repeater modem except, it is employed at the 1.7 KHz carrier frequency only and is used for interface to specialized equipment (microwave links, etc.}.

5926, p. 1-4

TABLE 1-1. SYSTEM SPECIFICATIONS

Modulation •.••• Frequency Shift Keying (FSK), Dual Channel

Keying Rate ..•..•••.•••. 600, 1200 or 240.0. bits per second

Carrier Center Frequency.~ ••.•••• Optional between 1.7 and 28.B·KHz (See Table 1-2)

Power Supply Voltage Requirements

Terminating Data Modem and Bridging Data Modem ...•..•.. +12 volts de, 160 ma

-12 volts de, 72 ma Regenerative Data

Repeater Modem ...•......•.•...... +12 -12 + 5

Ampli'fier Data Repeater Modem •.••.. +12 -12

Voiceband Data Modem .........•.•... +12 -12

volts de, volts de, volts de, volts de, volts de, volts de, volts de,

300 ma 150 ma 600 ma 320 ma 150 ma 175 ma

90 ma

Ambient Temperature Range -400C to +700C -4oop to +15gop

Input Data:

Digital .................. · .•..... :rvt.ARK, 0.0 ±0.2 volts de SPACE, +5.0 ±0.5 volts de, 1.0 ma

KeY .•......••..•... on-State, +5.0 ±0.5 volts de, 1.0 ma Off-State, 0.0 ±0.2 volts de

Receiver Sensitivity ......... Adjustable, +5 to -40 dbm, 600 ohm source

Output Data:

Digital ........................ MARK, +0.4 ±0.2 volts de SPACE, +3.5 ±1. 5 volts de

Squelch .•...•••..••••.••... On-State, +3.5 ±1.5 volts de Off-State, +0.4 ±0. 2 volts de

Transmitter Output •..••..•... Adjustable +15 to -20 dbm, 600 ohms, adjustable (+10 dbm

maximum output for amplifier data repeater)

Transmitter Output Stability .•.... ±2.0 dbrn at any level

WAS CD ~

5926, p. 1-5

WRBCC ~

TABLE 1-1. SYSTEM SPECIFICATIONS (CONT.)

Attenuation:

600 Ohm Line

Bridging Impedance

600 ohms 4200 ohms 9100 ohms

135 Ohm Line

Bridging Impedance

135 ohms 1070* ohms

Bridging Loss

-3. 5 db -0.6 db -0.3 db

Transmitter Output

Loss

-o. 5 db -6.5 db -9.5 db

Transmitter Bridging Output

Loss Loss

-3.5 db -0.5 db -0.6 db -8.5 db

* Requires external 470 ohm resistor.

Receiver Sensitivity

Loss

-0.5 db -11.0 db -15.0 db

Receiver Sensitivity

Loss

-0.5 db -11.5 db

TABLE 1-2. DCS-601 OPTIONAL LINE FREQUENCIES, BIT RATES AND APPLICABLE PRINTED CIRCUIT BOARDS

Data Regenerator Options:

Board No.

N451054-8501 N451054-8502

Max. Bit Rate (bps)

2400 1600

5926, p. l-6

TABLE 1-2. DCS-601 OPTIONAL LIN~ FREQUENCIES, BIT RATES AND APPLICABLE PRINTED CIRCUIT BOARDS (C9NT.)

Receiver Section

Receiver Filter

N451054-

-8301 -8302 -8303 -8304 -8305 -8306 -830·7 -8308 -8309 -8310 -8311 -8312 -8313 -8314 -8315 -8316 -8317 -8318 -8319 -8320 -8321 -8322 -8323 -8324 -8325 -8326 -8327 -8328 -8329 -8330 -8331 -8332' -8333 -8334

Use With

Receiver Demodulator

N451054-

-8702 -8702 -8702 -8702 -8702 -8702 -8702 -8702 -8702 -8702 -8702 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8701 -8703 -8703 -8703 -8703 -8703

Line Center

Freq . . (KHz)

13.l 15.4 26.0 28.3 1. 7 4.9 8.5 10.8 19.1 21. 4 23.7 4.9 6.2 8.3 9.6 10.9 12.2 13.5 14.8 16.1 18.2 19.5 20.8 22.1 23.4 24.7 26.0 27.3 28.6 9.5 13.6 20.4 24.6 28.8

Max. (bps) Bit

Rate

1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 2400

.2400 2400 2400 2400

WABCO ~

5~26, p. 1-7

WABCD ~

TABLE 1-2. DCS-601 OPTIONAL LINE FREQUENCIES, BIT RATES ~- .....

' AND APPLICABLE PRINTED CIRCUIT BOARDS (CONT.)

Transmitter Section

Use With Line Max. Nominal

Transmitter Transmitter Center Bit Osc. Filter Oscillator Freq. Rate Freq.

N451054- N451054 (Khz) (bps) (KHz)

-7603 -7703 1.7 1200 44.88 -7604 -7703 13.1 1200 31.48 -7605 -7703 15.4 1200 29.18 -7606 -7703 26.0 1200 18.58 -·7607 -7703 28.3 1200 16.28 -7608 -7703 4.9 1200 39.68 -7609 -7703 8.5 1200 36.08 -7610 -7703 10.8 1200 33.78 -7611 -7703 19.1 1200 25.48 -7612 -7703 21.4 1200 23.18 -7613 -7703 23.7 1200 20.88 -7614 -7702 4.9 600 29.89 -7615 -7702 6.2 600 38.59 -7616 -7702 8.3 600 36.49 -7617 -7702 9.6 600 35.19 -7618 -7702 10.9 600 33.89 -7619 -7702 12.2 600 32.59 -7620 -7702 13.5 600 31. 29 -7621 -7702 14.8 600 29.99 -7622 -7702 16.1 600 28.69 -7623 -7702 18.2 600 26.59 -7624 -7702 19.5 600 25.29 -7625 -7702 20.8 600 23.99 -7626 -7702 22.1 600 22.69 -7627 -7702 23.4 600 21. 39 -7628 -7702 24.7 600 20.09 -7629 -7702 26.0 600 18.79 -7630 -7702 27.3 600 17.49 -7631 -7702 28.6 600 16.19 -7632 -7704 9.5 2400 34.66 -7633 -7704 13.6 2400 30.56 -7634 -7704 20.4 2400 23.76 -7635 -7704 24.6 2400 19.56 -7636 -7704 28.8 2400 15.36

5926, p. 1-8

2-1 INTRODUCTION

SECTION II PRINCIPLES OF OPERATION

Each modem of the DCS-601 is similar in that each modem employes a carrier modulation portion (transmitter circuit} and a carrier demodulation portion (receiver circuit}. As each modem employes these circuits in varying 'numbers and connections, the transmitter and receiver circuits are discussed first. Refer to section V for s·chematic diagrams.

2-2 DCS-601 TRANSMITTER CIRCUIT FUNCTIONAL DESCRIPTION_ (FIGURE 2-1)

Digital data is routed to the Transmitter Oscillator where the shift oscillator converts the data to frequency shifts. The frequencies from the shift oscillator and the BFO outp~t frequency from the Transmitter Filter are mixed and the difference frequencies are selected by the low-pass buffer filter. When the key-on signal is applied to the FET switch, the difference frequencies ;:ire rnntP.d through the amplifier and filter to the bridging transformer. The bridging transformer provides impedance matching to the transmission line.

2-3 DCS-601 RECEIVER CIRCUIT FUNCTIONAL DESCRIPTION (FIGURE 2- 2)

The frequency shifted signals from the transmission line are routed to the Receiver Filter where the bridging transformer provides impedance matching. The signal is then routed through the input filter to the Receiver Demodulator amplifier. The amplified signal is then routed to the limiter on the Receiver Filter.

The limited signal from the limiter is routed to the discriminator for demodulation. The demodulated data is th1?n routed through the summing amplifier, active low-pass filter and equalizer, de restorer, and slicer and bias adj. circuits to the output driver. The active low-pass filter rejects the high frequency carrier; the de restorer references the filtered signal to ground potential so that the slicer will have a stable level from which to work. The slicer and bias adjust circuit discriminate mark-space information from the filtered and referenced signal inputs. The bias level is adjustable to compensate for bias distortion.

The signal from the Receiver Filter is routed to the rectifier circuit which half-wave rectifies the signal which is then level detected in the squelch circuit.

WABCO °'V'At,..""V'

5926, p. 2-1

WABCCJ ~

The output driver con~i:tio:Qs.signal~ to produce logic levels which are compatible with the digital equipment. The +5 volt regulator provides supply voltage to the output driver.

2-4 MODEM FUNCTIONAL DESCRIPTIONS

·Paragraphs 2-4.1 through 2-5·provide functional descriptions of each modem and·pbint out the differences in each. In addition, functional block and schematic diagrams are provided for each modem. Depending on line.frequency and bit rates, modem printed circuit boards within a series vary slightly. Table 1-2 lists the modem printed circuit boards within a series and their line frequencies and maximum bit rates.

DATA INPUT

rl T;:;;~;;~;1:;;;-----: r, --------;;:~M;T~;~;il

77XX I 76XX I I I I I I I BFO I I I I o4 I I I I I I 11 I I SHIFT MIXER . I I I

I I I I I I I I I. I I

OSCILLATOR IC1, IC2 I 01.03 I I

I I I ----11 I

11 ----11 I

LOW-PASS BUFFER FILTER

L8, l9, 05

11 FIT I SWITCH AMPLIFIER I

I I 02, 07, 09 06, OB, T1 I I I I

"------ I 11-----------------------------· I I I 11 I I I I 11

FIL TEA L3, l4, L5

BRIDGING TRANSFORMER

T2

I I I I I . · . . 1 l . j L __________ JL __________ _

KEYON

Figure 2-1. DCS-601 Transmitter Functional Block Diagram

5926, p. 2-2

Ul \.0 (\.)

m .. 'U

(\.)

I w

LINE INPUT

r-----------~r-------------:----------, I I I I

I ~ BRIDGING INPUT I SQUELCH 0.UTPUT

TRANSFORMER ~ FILTER - AMPLIFIER - RECTIFIER ~ CIRCUIT ~ DRIVER

I I Cl - IC3. 013, 014

Tl L1 TO L7 I IC4 IC5 r-J. I

I I I j I I I I I

• t I I I I I TO OUTPUT DR IV.ER

LIMITER

I +5 VOLT l I

!Cl REGULATOR I I I

11 I I I ACTIVE

I SUMMING LOW·PASS DC SLICER

DISCRIMINATOR - AMPLIFIER - FILTER ..... RESTORER ... AND LB. L9 - - AND 01 TO 011, 06, BIAS ADJ. I IC6 EQUALIZER 08, IC10, IC12 IC11

I IC7, ICB. IC9

FILTER I I I La::_ ____ ----__ J LR.:=~E~D.=_M~~A~~7~ ________________ _J

Figure 2-2. DCS-601 Receiver Functional Block Diagram

DATA OUT

SQUELCH OUT

+5 VOLT OUTPUT

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WAS CD ~

2-4.1 Terminating Data Modem

The configuration for the terminating data modem is shown in figure 2-3. This modem employs both the Receiver Filter and Receiver Demodulator Printed Circuit boards and the Transmitter Filter and Transmitter Oscillator printed circuit boarqs. A functional.schematic of the term_inating data modem is shown in figure 2-4.

The transmission line connects to the transmitter and receiver circuits through an optional pad and/or a threeport bridge. Unless a particular application calls for an ~xterna~ bridge or.pad;the_internal pad option is used.

TRANSMIT' DATA

TRANSM1TTER OSCILLATOR

PCB

TRANSMITTER FILTER

PCB

REQUEST ___ ...;..;.. __ ;,,..._ ___ .....;._,

TO SEND

.RECEIVED DATA

RECEIVER DEMODULATOR

PCB

CARRIER .... t-----' DETECTOR

RECEIVER FILTER

PCB

PAD

Figure 2-3. Terminating Data Modem Configuration

5926, p. 2-4

WABCC ~

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RI lR4 rs: r~~ ~ I

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LI, LI, Q5 .._, Ta-T -· LINC

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T-- I I ,._II I ra ~~~·~-+--1-~~ I

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Tl'-10

(•) CARRIER Dl:T

Rl~AS AOJ

SLICER l BIAS ADJUST

lCII

... I l J ,a· I I n-n r A___•• KT cP' .. I

.. 1 -ourl'IIT DRIVER

lCS n-11!'.71 ~air~

'9-14(.1) iim'~TA ii

111-110 KllllMI6 ~SI NO • \

TEST• •

I , I

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I I !1~>'

RCVR OATA

r

.. SQUELCH IC4

--- I --- -- I 10 - - -- _j -------=::_-1- - P'ILTEII OUT

LOW l'ASS l EQIIALIZE:R

ICT ,1c1,1c1

1

DC IKSffltER QI ,Cll,QS,Q4

Ql,Ql,IClllCIC

RtCTlf'IER tcs,DIS,Dl4

RCVW OATA I r-· L -----i,, -1,- -- --1i- - - -

+11v -IIV

II t• •o --•--- --r--,

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CW.HIS ~ /\T-t

COMMON

lPL-1

- CGJIIPI C?) n-• • +11v

+uv 'f l'L-1 +uv (7) ,.._ ..

-IIV

-HY ll'L-> -IIV(7) Tl'-et

NORMAL N.Y-1 ~ r::!!:l •' Sl +ttY

-~T

NOTES: * - IHlll!'LD WIRE

v •• • - TEST l'LUB l'L

@- TOT l'OINT Git CARD

!

~ Functional Schematic

! i 5926, p. 2-5/6

2-4.2 Bridging Data Modem

WABCO ~

The bridging data modem, like the terminating data modem, consists of the four basic printed circuit boards (see figure 2-5); however, a pad is not utilized.

As shown in the functional schematic (figure 2-6), the standard strapping presents an in-band impedance of either approximately 1100 ohms (option B for 135-ohm line) or 9100 ohms (option A for 600-ohm line). Since this modem is bridged across the line, a slight transmission loss is incurred to those in-band frequencies that must pass from their source to a destination beyond the point of the bridge. For option B a 470 ohm 1/2 watt resistor is connected between TB-7 and TB-4 instead of a wire jumper.

--

t TRANSMITTER

FILTER PCB

L

TRANSMITTER OSCILLATOR

PCB

j l

TRANSMIT DATA

---

REQUEST TO SEND

t RECEIVER

FILTER PCB

, '

RECEIVER DEMODULATOR

PCB

1' 1 I

RECEIVED CARRIER DATA DETECTOR

Figure 2-5. Bridging Data Modem Configuration

5926,p.2-7/8

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r ~~···~' I I

h) r;;] I noo f LJ c HOO I [ iioo:J Is!;-\ I mo· I

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I l~ H~. 11) (•) I +uv -uv

I

SHIFT OSC QI ,Q3

lCIIITII DATA

:" A IILY-1 lP'L-T• J 1 ~I IT

I I ... I Tl'-1

(Y) I XMTR DATA

(a) noo •

1 Tl'-3 {o)

SHIFT OSC:

-71-.! -----,

c-MIXER

ICl,IC2 ,....

• LOW l'ASS & -FEii

Ll,Lt,Q5

I ~ +iav -11

v

I • I

WLT r- __ 1~,-IN I • 1

I Y,.L, 1:;~ £14 11 c-

I I I I I I I I I I I

IIFO Q4

! LT~.'.:[R..::C -- -- -- -1!:m ;;;us

I __ _J TP-9

{o) BEAT Flll!:QUl!:I\ICT

~

--- ~-__ _j TP-4 FILTER

• (w)

(, l 7600

TRANSMITTER

111!:Q TO SEND r - -l"L-1 I

••1 ,. I ~ CA RLT-1

St 19 "Hf I T •

SWITCH

02,07,09

----, I I I

IIRID<IING TRANSFOIIMER

Tl

~

OUTPUT Fil TER L3,l4,L5

_,,. I

I ~ ...

t~ 117 I ,;s I I I I I I

I I TP-a

!) (y) · 1 I,:~ I I I

L - .2!-q_u> ~c -

r-c;r--1 I I I I

.noo IIECEIYEII

Dl!:MOD

TP-10 (o)

CAIIIIIER

•

RII MAS A~

SLICER &

BIAS ADJUST lCII

...

FILTER IN

----1ir---c~-1,-- I _J FILTER OUT ----

ILIMITl!:R OUT

--1!.!- _e~l.!I,..!

• ~=~NG i.--FO-R

Tl i.--L.

--, I I I

•-IT (I) CAIIII Dl!:T CF isl of

OUTPUT DRIVER

IC5

• DC 111!:STOREI! QI ,QI ,Q3

1Q4 I~ II I LIMITER

JCI

I"'"

...... (A a""iii'Gl" ..I I

•-1• VJ iicvii"DATA e-e • I

T8-111(? RCYR DATA a-a 4 SI J -LN • 1 5 I TEST•

I I,

IICVII OIITAI

fL-a L

~Tf'-1 ~(y)

IIOVR DATA

•

,...

Q&,Qa,Icu Ic10

I LIMITER IN

11 rL-10

i.

I 141 •

I P'ILTl!:11 OUT I -,

INf'UT

SQUELCH RECTIFIER I. IC4 IC3,Dl3,Dl4 I

f'L l'ILTEII I LI ,Ll,L) IN I * I L4,LS,LI e Tl'-S LT (Y)

I •nLTE" out I -----r--,r--- ----·- ----1

_HEL ___ J Ill - I L-------~1--1J 4 I'' --· I S

CO!,NON -uv c-.i

+llv

l -t!V +IZV

, ,)

F~ Vl[W

LINE I

IILY~~ -14

II l I

.JJ!!L0 _Te-I

I 9100 OHM0 I Ta-•

ILINE 2'.

~-;.-fr. Ta· l

/ITe-11 CHASSIS

COINOtf

1"L•I co_,., cg n (7) n-• •

+uv

Yf'L-t f-t2V(7)n-11 +11v __ ~l~-----------------

-11v

~L-3 -12Y(?) TB-20 -11v_l6--------- ·

IILY-1 ~L

- ~ ;~ +12V ~ST

r«JTES: •- ••n•o ••• ~ - Tl!:aT l'L .. •f'L•

@- TEST l'OINT ON CAIIO

WABCD ~

c-.i Figure 2-6. Bridging Data Modem Functional Schematic

5926, p. 2-9/10

WABCO ~

2-4.3 Amplifier Data Repeater Modem

As shown in figure 2-7, two Receiver Filter, two Receiver Demodulator, and two Transmitter Filter printed circuit boards are used to make up the amplifier data repeater modem. In addition, internal pad boards are provided for those jobs which require them. Figure 2-8 is a functional schematic of this modem.

The incoming signal first passes through the appropriate Receiver Filter. The Receiver Demodulator board utilizes the squelch (or carrier detect) circuitry but does not demodulate the data. The amplified, limited signal is then fed to the Transmitter Filter for final amplification. Output keying for the transmitter is provided by connecting the squelch signal from the Receiver Demodulator board to the request to send input on the Transmitter Filter board.

RCVR RCVR XMIT FLTR DE MOD FLTR PCB PCB PCB

PAD PAD #1 #2

REOTO SEND

XMIT RCVR RCVR FLTR DEMOD FLTR PCB PCB PCB

REQTO SEND

Figure 2-7. Amplifier Data Repeater Modem Configuration

5926, p. 2-11/12

·r::------1 I

Tf!-1 Tl!(-, (e YJ

f'ILhii f'ILfflt I I

IN OUT

• • 1 1 .. ILT OUT

I PL-5

16 * f'~ VIP I

I I

•_.LI.LI•

TB-7 RCVR A-B 600 OHM

TB-6 ~ ,._, .. , -TB-5

u-15 IILY-1 5

TB-I A I '

TB-2

tr· IILY-t

: 10

IIACK RACK GNO

~ Tf•I

u-•

Tl-1• _!!_-

Tl-11 0 IIACK tROUND

Tl-II 0rc;;;-,..==-----Tl-It 0 +·u VOLT§ pc

Tl• u0 -,a VOL TS OC

10

r-;;;-_-;;i;;-1

I Ill RI

I IIS "'

I I ... 111

I I llt Rt I I I I I j I L ____ J

I I

1111091 .. T-SF0-11

4

A-II LIM IN 11\.-T

"I 1 • 1·.

(6) 8300

RECEIVER FILTER TP-1 (aR)

LIMITl[II

lCI

I I I A-8

LIM OUT

OISCIIIM-1 I I INATOII 7 T• Lt,Lt

L COM:ON J t-,-®9 . .--uv +uv COMMON

,-1 111111(11 ..

TIIANS-

l "I IFOM«II Tl

,,_

I

T

. - ---- ·--·· ·-.-------------~~[~} I

{5) OIT •J I 8700 T~-10

~c,mmoo m"n ,- , - ljl I I I I 1c, 1c• DIIIW:lt •

11

1-ITIVIT'I' ~ 013,014 JCS

ADJ Ill

OC lll[STOIIER

QI ,QI ,QJ,Q41Ql,Qt

JCll,ICIO

LOW PASS a

EQUALIZER IC7,IC8,IC9

Jct

SLICEII &

BIAS ADJ

ICII

I 11'

I I' I t 1"

,! TP-9) (Y

IICVII MTA I 12

I I' -IIV

1, +11v

~:;i_~, c_,,. II -

I

I v LJ~ I L---------------~

SWITCH Ql,Ql,Qt

IIFO

Q•

TP-1 (o)

BEAT FREQUENCY

K l __ -, I I I

TP•I

(y)~ fl!:CI TO

f I p

I

WABCD "'4A/'

PL-II REQUEST TO SEND A-8 To siu

TO SH 2

LIMITER OUT 8-Aw FROM SH I

ll[QUUT TO Sf:lm 8-A J 'FROM SH I

OUTl'IIT ,tLTER

I I 1

1u,L:,L~ fl ~ LEVEL ADJ Tl'-I I ~.. ~)

TEST SWITCH NO-L

- r.:!!:, /~ +12v ~2

IILY•t TEST I TP-5

{Gl FILTER OUT {e

L.__ . .----ll COMMON

. COMMON I , Cd f * - IMIELIIEO •••

1~ J l TIIANSIIITTEII • TEST l'L\19 l'l. FILTER

-------- -- ----- @•TEST POINT ~-,1 ' Figure 2-8. Amplifier Data Repeater Modem -I IV +t IV COMMON • • f 2· )

Functional Schematic (Sheet 1 o

5926, p. 2-13/14

-·--.....

TB-13 RCVR 8-A 600 OHM

RCVR 8-A 135 OHM lTB-12

R•II RCVR 8-A PAO

c-·3 RLY-1

l 11 LINE 18 l

Te-l v: u-·2 RLY-1

I II LINE 28 • T9•4

RACK GNO

XMIT A-8 PAD T9•14

R•n XMIT A-8 135 OHM

10

r-;-~N) #2-1 I RI RI

I RS RJ

I I 114 RT

I I Rt RI I I I I I ~ I L ____ J

r::------1 I TP•t Ty-J

v(?fER v1~-n:R I I

IN OUT

11 I I I I I I

I

FILTER

I ,Ll,LJ,

•.,Ls.LI•

9RIDIII,_ TIWtS• f"OIIMER

Tl

I 13) 8300 RECEIVER FILTER

Tl'·I (IR)

LIMITER

lCI

OIICIIIIII• INATOII

Ll,L•

li

L~~"P_J I 9 II

-11v +11v COMMON

PL-3 PL-2 PL-I

,-XMIT A-8 600 OHM Te·l•v'..>-..;..--~-',,;.-------------,

1 e111oe,,. TIWfS•

I .. , 1.-0...:R

0 15

I

Tl

OUTPUT FILTER

I I I ILS,L:,L~

I Tl'-5

rlLTi~)OUT {e

L.__ ----••

COMMON

f"ILT OUT

9-A LUI IN

',J PL-6

*

B-A LI~ OUT

PL-8

*

,-------------~~(~) I

12) OET •> I 8700 Tl!-10

'""'" """ tt .. ,o 1-1 · I ~-.. I

I I OUTl'UT • • REQUEST TO SENO B-A ICJ IC4 ORIVl'.R

_ !',... DU,014 JCS

1-N·ITIVIT'l' I ............

ADJ Ill

DC llf:STOREII

QI ,a1 ,as ,a,,a,,a, 1c10,1c12

LOW PASS B

EQUALIZER IC7,IC8,IC9

SLICER &

IIIAS ADJ

ICII

I I"

1---...,...--1•

I t 111

,!.. Tl'•t (Y)

IICVR DATA 112

I r •IIV

1, +11v

~:;>~I COIMlH

II C-l

I V LJ LJ .. t'.'w I L _______________ ~

SWITCH QI ,Ql ,Qt

·----IIFO Q4

.! TP'•I (o)

BEAT FREQUENCY

---, I I

Tl'-1 I !v> I

REQ 10 U'">f i'

I ""'"

LIMITER OUT 8-A

LIMITER OUT A-8

REQUEST TO SEND A-8

II ~LEVEL ADJ TP•I

(1111) I Riii

COMMON I (•) * · SHIELDf:0 Wiii(

7"0 y FILTER

WABCD ~

TO SHI

TO SH I

FROM SH I

FROM SH I

1

. f TRANSMITTER J i · TEST l'LU8 l'L

--.j-.J ' Figure 2-8. Amplifier Data Repeater --------- -- ------·- @•TESTPOUIT

•IIV +IIV COMMON

Functional Schematic (Sheet 2 Modem of 2)

5926, p. 2-15/16

WABCD ~

2-4.4 Regenerative Data Repeater Modem

Electrically, the regenerative data repeater :modem consists of two terminating data modems with a Regenerative Logic printed circuit board inte~pdsed (~ee .. figure 2-~). Internal pad boards are provided·for those jobs which require them. Figure 2-10 is a functional schematic of this modem. Refer to Section V for the schematic diagram of the regenerative logic printed circuit board.

The regenerative data repeater modem removes from received data, pertubations in the form of timing jitter, bias distortion, and variations in message length caused by the characteristics of the data transmission channel. Two sync options are available: one for continuous carrier systems and one for keyed carrier systems .. The continuous carrier mode will retime data with up to 35-65% bias distortion; however, it will not remove the jitter from the data. The keyed mode of operation will accept data with up to 35-65% distortion and reconstitute it. This distortion can be either bias distortion or jitter or any combination of both as long as the total distortion is less than 30% of one bit.

The message format is standardized to have three bits at a 0-volt level before the first positive transition of the message. Likewise, there will be three bits after the last received message bit. The characteristics of each receiver are such that each will add zero bits at the beginning of each message due to the differential delay between the squelch and data channels.

To accomplish this, a three-bit delay is placed in the data channel and these three bits constrained to be zero when the first positive transition of the incoming message occurs. Simultaneously with this first positive transition, the keyon goes to a 1 level and data is fed to the transmitter when the squelch input goes on (1 level). The key-on output is held on for six bit times before going off. This compensates for the two-bit repeater receiver differential delay, the three-bit regenerator delay, and adds one bit to help compensate for the two-bit differential delay in preceding or following repeaters. Thus, a message format initiated with three zero bits preceding the first positive transition and four zero bits following the last message bit will, when passed through one regular repeater, have five zero bits preceding the first positive transition and two zero bits following the last message bit.

Figure 2-11 shows a relation timing diagram for the regenerative data repeater operation.

5926, p. 2-17

Ul I.O I\.)

°' .. lt'J . I\.) I .

I-' 00

A

PAD#l I

~I

B

REQUEST TO SEND

RECEIVER H RECEIVER

H TRANS- . TRANS· DEMODU· MITTER H FILTER

LA TOR OSCILLATOR MITTER PCB

PCB PCB FILTER

I REGENERATIVE LOGIC I PAD #2

PCB

TRANS· TRANS· H RECEIVER MITTER MITTER DEMODU· J.--1 RECEIVER FILTER OSCILLATOR LA TOR FILTER

PCB PCB PCB

REQUEST TO SEND

Figure 2-9. Regenerative Data Repeater Modem Configuration

Tll•T

,. ...

Ei:i1 -' T[ST

~ o~~~@~@~~~ ,._.,v,cw

.H. O!N

r::------1 I Tf.J Ttvl

P'lLTCII P'ILTH I I

IN OUT

• •

I INPUT I

·, -z-;,----------------;~fR{e)I noo Fl Tl!•IO I

-IVllll DDIIIO CTIFICII SQUl:LCH @ OUTl'UT I 15

I I I ICJ 1C4 DltlVCII •

A-8 ~ DU 014 lC5

LI-I Ill

I P'ILTCR

,.La.Ls.

FILT OUT I ""!~IYITY •

!• J * .,---~·._ .....

I I

.J

•.•LS•L••

IIIIIDOINll TNiNS• F0-11

Tl

LIMITER

ICI

~

A-II I LIM f IN

,Pl..1-10

1

. I I

DC RESTORER

Ql,Ql,Ql,Q4,Ql,QI

ICll ,JCIO

.! TP·I (v)

IICVR DATA II

I •' I .Ii

A•B IICVR DATA

.,PLl-1

•ltV

+uv

.!!.

u ~r

!> II

.---1 I (1)

I

I

HOO I I --MTVII ·

5 BIT DATA

DELAY /;)

J BIT DATA

DELAY ro

aYNC \

IIEN )

......-

WABCO ~

YR A-LP'A

~-;;.;-_-;;;,r.-, DI SCRIM• I NA TOR

Ll,LI

LIM, OUT A-II I .PLl-11

• I J

TP•I I LOW PASS SLICER & (BR). ~

S BIAS ADJ Ca.l)N II

I ICIIYSTAL CLOCIC

I TS~I I I ,._ 5

TB-I

TB•!

re-,

Tll•I

TB•IO

XMIT B-A PAQ

LINE A

~

l-15 RLY~

5

R5 Rl Ill

TUBE

CHASSIS

-

I I I I

RG

L __ _

,.,

XMI T B-A !00 -

RI

RI

EQUALIZER IC I I IC7,IC8,1C9

I I c ,o} I noo PLI-I

I RECEIVER FILTER A-R j IAS ADJ I

I I c~ 117D:~:p~:~:1 .... I I -t~-®91.--- DISCRIM L _______________ _J I -1 zv +1 zv COMMON

I ~-~---------------, I 7l~O Tl'•l

-I

TB-380--10 ! I T e-35 0--ta..i---..J.

T8·35VJ ·· 1 I

T6·37

~ ::i I TRANSMITTER 01e. (o) I ~

r,•-a SHIFT OSC

(•) TP-1 I

+IH

CLOCIC .. .,. .. IIT RATE/ Sl:L[CTOR

(

COWT'O ON

SH. I

I _ J

-12v -12v • I (y) l•A

~ TPj1 lCIITR DATA lQITII DATA I

+1zv i~zv • LI-T

~

Tl'-2 LOW PASS' BUFFER SHIFT osc Ill , BIT DATA\7 c-. (BR} LI L9 (15 QI Ql I ~ COINON • ' ' OE\.AY

,- _!

1 IIRIDOINll TRANS•

L__ _ ________ J II IS

EMIT OUT B-A PLl-5

t e ( MOLT IN B-A PL 1-4 11---------,

c-llV

I .. , I FOIIMER

SWITCH QI ,Ql

0Q9

BFO Q4

I I

I I I I I I I

J I I \ \ I ~-IIV

Tll•JO

PLI-Z Tll•II ~ +iav

n-u(7) , +uv ,

I /L--J PLl•I ,._tl'CJ ~

2

r:=<c-,._H:J ff•H

c-

MGIS lftOUNP ff•U 0 ~CHASSIS

15

+uv

I

TZ

OUTl'UT FILTER

I I I 1Ll,L:,L51

TP•S

~ILT~i)OUT(e

L__ . .-----.7

-

I' ~LEVEL ADJ 11111

.!. TP•t (o}

111:AT FRCQUEHCY

TP·6 (BR)

TP•I I cv > I

IIEQ ro KHDf ...

c~ I

B·A MCI TO -

"PLl-1 I 81T DIITA

11£LAY ,.

I L ___ \

TRANSMITTER • - TUT P\.IIB PL FILTER ~ J y (l) f * • llftEL•D •1•

--+-'1 ' Figure 2-10. Regenerative Data Repeater ------- - ----- @-ttSTf'OINT

· -t1v +uv - Modem Functional Schematic (Sheet 1 of 2)

5926, p. 2-19/20

r::------1 I "ei Tty, -

,.{LTEII FILTEII I I

IN OVT

• •

I INl'UT I I FILT[R

l•LI.LJ•

I I I a111oe1M

.---1

141 ---8700 __

B-A I '""""~"i® ------"' ' -T OUT I SENSITIVITY "'- I Fl "II.JC" (•,--, •u-, ':f' I "- -~ tt-,ol I • ,' '" If I

·"

,!. T,._, (Y)

IICVR DATA II

,0-1~

fl

B-A IICVII DATA

_, PL2-8

,o-,v,---7 I 161

<t 8500 31 REGENERATOR I ! I I I 81T MTA "' I DELAY tD

) 81T DATA

DELAY Jr)

WABCCJ ~

n-u(7) IGd 1-i' '" - Io I .j

T-Sf'-11 1

. I I

I

I I I -\

ff-12

T9•1 I

TB-l

T9•4

TD-14

,a-•s

Ta-If

Tl

LIIIITEII

IICVR 11-A___!ll 1111111 lCI

B-A

DC RESTORER 01.02 103,.04,06,QS

ICl2, ICIO

... I Ii

-urv I ... , c2 ...

+11v ~· tLSO S-ON SH I r---.

- )

,-;;-_-;;;;,rz -, . I OISCIIIII

INATOII

Liii OUT I L2-I I

. I LOW PASS a

I ,,._, I (a11)~

·, .1 I lcRYIITALI

I CLOCK I I I I

)l!I_II-A _l'I! Ll,Lt EQUALIZER IC7,IC8,IC9

SLICER &

BIAS ADJ

ICII I I I TB-22 I JI

c-.i II COMMON I

LINI: B-l tr-•s I RI ~ RI I --~

I I , s) I GJ CONT'D

~· 3

LINI: B-• I ~2-1,

IILY-1 •

:--..-; ~

I I I I

115 RS

114 l"' 117

CHI\SSIS L __ _ XIIIT A-B ""11

C!_O-

"' RI

1100 PL2-12

I RECEIVER FILTER B-A - I I I

Tl'-1 lllSCRIM IT TB-310--t: I I

Ta-34J;" 1 +HI

CLOCK DIVINR ~ I I O 9 J PL2-13 I I -f~- I.- o,:c:1 .. L _______________ _J

Ta-3t (I) '! I •

I -11v +1 av c_,. TJS-33

~----------------, v---.1 I I ( 7) 77 oo T,.., +SYS+

TRANSMITTER oac. (o) I TB-2 3 (A I

_L-@ T,.-1 SHll'T DSC ~> ,._, I

BIT RATE

SELECTOR

\ :.. \ I I

I (

I _ J

-11v -tav • T I (y) A-8

~ Ti"->' *'" DATA *'" DATA I +11v ~ e l'L2-T

~ ,,.~: LOW ,.Ass & DUFFER SHIP-Y osc In 11 , an MTA\!J

COMMON (111) Ll,Lt,QS QI QJ I < Coo.NON ' _ DELAY

L__ _ ________ J J I , .. ,-

1 PIDSIM TIIANS-

1 .. , l,.0_11

IJi

I.

Tl

OUTl'UT FILTER

I I I IL3,L:,L~

,,._s ~ILT~')OUT (e

L__ ----,.

-

II [

t:lollT OUT A-8 f D (. IIULT IN A-8 PL2-5

- ) T"-4 • (w)

·~·-------, TD-17 I I I I I I I

SWITCH Ql,Ql,Qt

AIIP IN

I' ~ LEVEL AOJ Riii

BFO Q4

-! TP•t Co)

BEAT FREQUENCY

T"-1 (1111)

COMMON 'i

I I

Tl'-• I (Y)~

REQ 10

i'

I I I

-"-

l'-B IIEQTO-

'"" l'Ll-1

K

\

I an Dl'ITA

DELAY

\ I

A

I L ___ \ TB-II

* - lffll:LDEO WIRE

~~~ ~~ TRANSMITTER FILTt:11

------- I 3 -.

-'! - TEDT l'\.119 l'L _____ J @ - TEST l'OINT

Figure 2-10. Regenerative Modem Functional Schematic -IIV +ttv COMMON

PL2-3 PL2-2 ~ PLZ-1

-12v +-12v COMMON

Data Repeater (Sheet 2 of 2)

5926, p. 2-21/22

LOCAL CLOCK

SQUELCH J

RECEIVED DATA ____ _.

KEYON ____ _

REGENERATED DATA _______ _

WABCO '-/'MY'

SYNC PULSE~----'-----------------------~

Figure 2-11. Regenerative Data Repeater Timing Diagram

2-4.5 Voiceband Data Modem

The comfiguration _for the voiceband data modem is shown in figure 2-12. Figure 2-13 is a functional schematic of this modem.

The four standard receiver and transmitter printed circuit boards, plus two additional boards are used in the voiceband data modem to heterodyne incoming signals up to 13.1 KHz. The 13.1 KHz modulated data is then fed into a standard 13.1 KHz receiver which demodulates the data to de levels. Because of this heterodyning process, the operating range of the modem is reduced to -5 to -20 dbm.

Internal pad boards are provided for those jobs which require them.

5926, p. 2-23

WABCD ~

t PAD#2

• l

TRANSMITTER FILTER

PCB


PCB

TRANSMIT DATA

REQUEST TO SEND

+ PAD#1

RECEIVER FILTER

PCB


PCB

' r

RECEIVER FILTER

PCB

RECEIVER - DEMODULATOR - PCB

' ' RECEIVED CARRIER DATA DETECTOR

Figure 2-12. Voiceband Data Modem Configuration

2-5 PAD BOARDS

The terminal data modem, the voiceband data modem, and both repeater modems are equipped with impedance matching pad boards interposed between the line terminals and the transmit/receive filters. These pad boards can be strapped with appropriate resistors to provide a 6 db "H" pad and/or a three-port resistive bridge. The pad impedance may be 600 or 135 ohms as a function of the line impedance involved. The purpose of the pad is to provide adequate isolation for the filters and to provide a good termination for the line transmission.

5926, p. 2-24

I I I \ !

! c

,-------------, ! ~ ~. ~ I

(I ) (1) I 8700 I t noo I

{1)

El r 1soo I

WABCCI ~

r--: J __ 1_:-_ +11v -1~ .--... -------------.. --COl,UON I

I r a:soo ::::J c noo 1 ~ ... , 1 1300 1

lOITR MTA

11A 6Pl.-l

Ta .. lOITR DATA

REQ TO SEND

I T~ TP-1

I (R) (w) +11v -uv

I ,J I I I I TP-1

(v) I lCMTR DATA

..

I I

SHIFT OSC

QI, Q3

TP-3 ( 0}

SHIFT OSC

12) 7700

TRANSMITTER OSC

L----

r--1

...l I-!.

:!. 1;~.

COIUJN

-----, I I I

MUI.T rlN I

IE :L, Bl

I I

LOW PASS' eu,,ER Ll,L9,Q5 I

I __ _J

I I I I I [MIT OUT 115

-~ .. __ _ I

___ _J

IN

CA 1~~ I n-110 RIQ To St:ND P I

I ' • SWITCH

02,07,09

I I TP-8

!) (Y)

L-~~~~~~~~~.-,.£VEL ADJUST

L-~Q..!!~- c-

I +11v IPAO

-- ,__,_ 11 L ___ _ I i ·,IIV BOAR0#

2 5RI 5,RI

!) -- --Tl'-· - - --(BR)

COl,UON

IIFO Q4

14

-.) (s) NOJ-I TEST (1)

I ,RONT VIEW

..J

XMIT 1.IIC 3

RI.Y-~1'1.-13 lOITR LINE 3 I uL'T ' ra-,

Ta-•

Ta-1

BRIDUNCI I '15 I I TRANS- 1 1 •99 Rlllv T•-••

TP-9 (o)

IEAT FREQUENCY

13) 7600

TRANSMITTER FILTER

FILTER IN 7------1,0

FORMER

n

OUTPUT FILTER L3,L4,L5

TP-5 •> (a)

FILTER OUT _J

Ta•I

u-11 CHASSIS

CF-· C- COlfl!DI 0) Tl-I I

+uv

f1.-z +uv +uv 0) u-n

-IZV

tl'L-3 -UV -IIV 0) U-IO

SI RLY-1 -1.

r:::!!:::, -,, I +t tV

C~ST

NOTES: ~ - TEST PLUG 'PL

@- TEST POINT Off CARD

Figure 2-13. Voiceband Data Modem Functional Schematic (Sheet 1 of 2)

5926, p. 2-25/26

I I. J

·re-n

n-11

re-1•

Te-ts

,--------.----1 7' CF g\1111 DET 15 ' I I ----CF ~1111 DET

ii iicvii DATA

81~6:h I I I I I I I I

, M IICVR Ol<T_I

SLICER~ 81"5 ADJUST

rc11

,:o "t:J L. I f I • (y)

RII DET RCVR,_, ,.oAccT,.,A,_ __ ..... ____ ....,

--.

I 1 I I I I

::J.li__j

+!.t_v_

I ,--{e)1:;J ~c-l I I I I

S~LCH

IC4

•

RECTIFIER

tCl 6013 ,014

., •

-Llf"IER 1c1

.____

r-1

I I I I

I *

DC RESTORER

Ql,QZ,Q3,Q4,Q6

IC II ,tCIO

4

LOW PASS a EQUALIZER

IC7 ,IC8,IC9

I I

---~" - ,11 _ _J

~,- _,11 00

EIVER OISCRIMI· FILTER NATOR

I I

I.I I I.

~

L8,L9 -7

I""

LIMITER ICI II

* li ,,..~vvv l~PUT

SENSITIVI~~ I I FILTER I I !I l I ADJ

12 l •

1 8700

R~~~li~.:__ - _ _J ,_, I =ll.L.!

+12v 1

(BR) C~iON

BRIDGING TRANS.

Tl ~ 10 I""

1-----·

I TP-2

L!t, I 1-,2

I _J

COMMON

LIM. \/

G-

(6) 8300 ECEIVER FILTER

I I

.:.!lLl

j

IPADBO~--,

I I I RI R3 R5 I

-,......>tAAA

Dl'"U'lt LINE I

1:: RCVR LINE Z

HY-BAS Tua~ S <P

~ •1-1 t

RCJl!L!'.AD

RCVR IJ_l!_ Otllll BRIDGING

RANSFORMERI I, O RCVR ,oo Otllll c; TI I

I I

FILTER OUT

I

WABCD ~

ra-, I

TB-2

TB-5

TB-I

ra-1

PL-II I I

INPUT I I:i' • FIL TEA II PL-9

(UF

2.1K"'

FILTER IN LI ,LZ,L3J---....!c'-....-------, TP-3 • L• ,LS ,LS I

( Y) .__u__,.-~ FILTER OUT

TP-2 (BR)~

COMMON

620W

I 6 I I 6 COMMON

u• I":::'" r I.. . I

L ___ ~ ~ r-i'si- - - -- -- ----, I 1100 ,~,

I TRANSMITTER . (o)

I osc SHIF•T osc. xurFi:TA I

SHIFT OSCILLATOR • .__,..;..-Ill QI, Q3 17

I 'i:L~ .... BUFP"ER tw ""' ~ -12v I LOW PASS & l"->'li\..-- I.

-IIV I

LLl,L9,Q5 I:>~ COIM)l,I

os

1c.ouT - c-,.. _J

15 L-10

Figure 2-13. Voiceband Data Modem Functional Schematic (Sheet 2 of i

2)

5926, p. 2-27/28

3-1 GENERAL

SECTION' !'It. ; ,, INSTALLATION

This section provides information necessary for the installation of each modem of the DCS-601 Digital Carrier System.

3-2 MOUNTING

Each modem mounts in a standard 19 inch rack. Refer to figure 6-1 and figure 6-2 for dimensions for the six and ten board cardfiles, respectively.

3-3 PRINTED CIRCUIT BOARDS

WABCD ~

Refe'r to the drawing on the rear of the modem front panel for printed circuit board locations within the cardfiles. All printed circuit boards should be inserted firmly into the appropriate card file socket. Care should be exercised to insure that the printed circuit board and socket are aligned to avoid damage to the p~inte~ circuit board and socket, and to insure good electrical contact.

3-4 POWER REQUIREMENTS.

Bridging and Terminating Data Modem ••• -12 volts, 160 ma +12 volts, 72 ma

Regenerative Data Repeater Modem •••..• -12 volts, 150ma +12 volts, 300ma + 5 volts, 600ma

Amplifier Data Repeater Modem •.•••.•.•• -12 volts, 150ma +12 volts, 320ma

Voiceband Data Modem ••••..••••••••.•••. -12 volts, 90ma +12 volts, 175rna

3-5 TERMINAL BOARD CONNECTIONS

All power and interfacing connections are made to the terminal board mounted at the rear of each modem housing. Terminal board terminals are illustrated on the drawing on the rear panel of each modem. In addition, tables 3-1 through 3-5 list each terminal board connection and its function.

5926, p. 3-1

WABCC ~

TABLE 3-1.

Terminal

TB-1 TB-2 TB-3 TB-4 TB-5 TB-6 TB-7 TB-8 TB-11 TB-12 TB-13 TB-14 TB-15' TB-16 TB-17 TB-18 TB-19 TB-20

TABLE 3-2.

Terminal

TB'.""l TB-2 TB-3 TB-4 TB-5 TB-6 TB-7 TB-11 TB-12 TB-13 TB-14 TB-15 TB-16 TB-17 TB-18 TB-19 TB-20

5926, p. 3-2

TERMINATING DATA MODEM TERMINAL BOARD CONNECTIONS

Function

Line 1 Line 2 Rcvr. (135 ohm) Rcvr. (600 ohm) Rcvr. Pad Xmtr. (135 ohm) Xmtr. (600 ohm) Xmtr. Pad Chassis Ground Xmtr Data Rcvr Data Rcvr Data Request to Send Carrier Detect Carrier Detect Power Common +12 Volt Power -12 Volt Power

BRIDGING DATA MODEM TERMINAL BOARD CONNECTIONS

Function

Line 1 Line 2 135 ohm 600 ohm 4200 ohm 9100 ohm Bridge Chassis Ground Xmtr Data Rcvr Data Rcvr Data Request to Send Carrier Detect Carrier Detect Power Common +12 Volt Power -12 Volt Power

'

WAS CD ~

TABLE 3-3. AMPLIFIER DATA REPEATER MODEM TERMINAL

Terminal

TB-1 TB-2 TB-3 TB-4 TB-5 TB-6 TB-7 TB-8 TB-9 TB-10 TB-11 TB-12 TB-13 TB-14 TB-15 TB-16 TB-17 TB-18 TB-19 TB-20

TABLE 3-4.

Terminal

TB-1 TB-2 TB-3 TB-4 TB-5 TB-6 TB-7 TB-8 TB-9 TB-10 TB-11 TB-12 TB-13 TB-14 TB-15 TB-16 TB-17 TB-18 TB-19 TB-20

BOARD CONNECTORS

Function

Line lA Line 2A Line lB Line 2B Rcvr A-B Pad Rcvr A-B (135 ohm) Rcvr A-B (600 ohm) Xmit B-A Pad Xmit B-A (135 ohm) Xmit B-A (600 ohm) Rcvr B-A Pad Rcvr B-A (135 ohm) Rcvr B-A (600 ohm) Xmit A-B Pad Xmit A-B (135 ohm) Xmit A-B (600 ohm) Chassis Ground Power Common +12 Volt Power -12 Volt Power

VOICEBAND DATA MODEM TERMINAL BOARD CONNECTIONS

Function

Rcvr Line 1 Rcvr Line 2 Xmtr Line 3 Xmtr Line 4 Rcvr Pad Rcvr (135 ohm) Revr (600 ohm) Xmtr Pad Xmtr (135 ohm) Xmtr ( 600 ohm) Chassis Ground Xmtr Data Rcvr Data Rcvr Data Request to Send Carrier Detect Carrier Detect Power Common +12 Volt Power -12 Volt Power

5926, p. 3-3

WABCD ~

TABLE 3-5. REGENERATIVE D~TA REPEATER MODEM TERMINAL BOARD CONNECTIONS

Terminal Function

TB-1 Line A TB-2 Line A TB-3 Line B TB-4 Line B TB-5 Rcvr A-B Pad TB-6 Rcvr A-B (135 ohm) TB-7 Pcvr A-B (600 ohm) TB-8 Xmit B-A Pad TB-9 Xmit B-A (135 ohm) TB-10 Xmit B-A (600 ohm) TB-11 Rcvr B-A Pad TB-12 Rcvr B-A (135 ohm) TB-13' Rcvr B-A (600 ohm) TB-14 Xmit A-B Pad TB-15 Xmit A-B (135 ohm) TB-16 Xmit A-B (600 ohm) TB-17 Xmit Data A-B TB-18 Request to Send A-B TB-19 Carrier Detect TB-20 Rcvr Data TB-21 Sync Selector A-B TB-22 Sync Selector B-A TB-23 +5V TB-24 Chassis Ground TB-25 Power Common TB-26 Power Common TB-27 +12 Volt Power TB-28 +12 Volt Power TB-29 -12 Volt Power TB-30 -12 Volt Power TB-31 A-B TB-32 400/600 TB-33 800/1200 BIT TB-34 1600/2400 RATE TB-35 B-A RANGE TB-36 400/600 TB-37 800/1200 TB-38 1600/2400

5926, p. 3-4

4-1 INTRODUCTION

SECTION IV FIELD MAINTENANCE

.This section provides the field maintenance technician with information to .rapidly isolate faults wi~hin a DCS-601 modem using a minimum of test equipment. Faulty printed cir~uit boards are isolated and replaced by operable spares.

4-2 TEST EQUIPMENT

Test equipment required for field maintenance of the DCS-601 is listed below.

Multimeter Minimum 20,000 ohms per volt DC, 5,000 ohms per volt AC

4-3 PRELIMINARY TEST PROCEDURE

Prior to performing actual tests of a DCS-601 modem utilizing the WABCO Carrier Test Set, insure that power supply voltages are correct as follows:

1. Gain access to the terminal board located at the rear of the unit.

2. Using the multimeter, check the +12 and -12 volt supplies at the appropriate terminals as noted on the terminal board drawing on the modem rear panel. If either the +12 or -12 volt supply is incorrect, check the associated converter {power supply).

3. Using the multimeter, check the +5 volt supply at the modem rear terminal board. If the +5 volt supply is incorrect, replace the Receiver Demodulator printed circuit board(s).

NOTE

Printed circuit board locations are noted in the drawing on the inside of the front panel cover of each modem.

w1=1.a.ca ~

5926, p. 4-1

WABCCI ~,....., 4-4 CARRIER TEST SET

The WABCO Carrier Test Set is used to check transmitter output level, receiver sensitivity, receiver bias distortion, transmitter BFO frequency, mark-space shift frequencies and other modem parameters. The test set, which has no internal power source, is connected to the carrier modem front panel test jack by means of a 14-pin connector and test lead. Three standard bit rates (600, 1200, and 2400 bps), several sensitivity levels and several line frequencies are provided for testing and troubleshooting of each modem.

5926, p. 4-2

5-1 INTRODUCTION

SECTION V SHOP MAINTENANCE

This section is provided as a guide to the shop maintenance technician in test and repair of the printed circuit boards of the DCS-601 system. Refer to section VI for cardfile breakdowns and parts lists for each modem.

5-2 TEST EQUIPMENT

WABCD ~

The following test equipment, or equivalent, is required for shop-level maintenance:

Function Generator

Oscilloscope

Frequency Counter

AC VTVM

Sine wave, square wave, minimum 0-1.0 MHz and,

0-10 volts peak, external gating

Dual channel, calibrated sweep and voltage ranges,

de to 5 MHz

Minimum Oto 1.0 MHz, six digit accuracy

Minimum -60 to +20 dbm, 3% accuracy

Power Supplies Oto 12 volts de at 1.0 amp

Multimeter Minimum 20,000 ohms per volt DC, 5,000 ohms per volt AC

Variable Attenuator 600 ohms, 0 to -60 db attenuation

Load Resistors 600 ohms, 5%, 1/2 watt 51 ohms, 5%, 1/4 watt

1000 ohms, 5%, 1/4 watt

PCB Extender To accommodate WABCO printed circuit boards for testing, WABCO N398028

5926, p. 5-1

WABCD ~

5-3 PRINTED CIRCUIT BOARD MAINTENANCE PROCEDURES

Paragraphs 5-4 through 5-8 list shop maintenance procedures for fault isolation and repair of the following printed circuit boards.

T~ansmitter "Fi1t~r (N451054-76XX) TransMitter Oscillator (N451054~77XX) ieceiver Filter (N451054-ff3XX) Receiver Demodulator (N451054-87XX) Data Regenerator (N451054-85XX)

Test procedures are provided to check the operational status of each printed cirucit board. Printed circuit board layout diagrams are provided as an aid in identifying and locating components and schematic diagrams are provided as a troubleshooting aid to the maintenance technician. It is assumed that the·maintenance technician has the skill and experience to isolate and repair faults on printed circuits employir{g integ·rated circuits and logic circuitry.

5926, p. 5-2

WABCCI ~

5-4 :: TRANSMITTER FILTER (N451054-76XX)

5-4.1 General Information

The printed circuit board layout (figure 5-1) is provided to aid the technician in locating components, test points and pins as noted in the test and adjustment procedure, and the schematic diagram (figure 5-2} is provided as a maintenance aid.

5-4.2 Test and Adjustment Procedures

The following is the test and adjustment procedure to be followed to check all boards of the series. Unless otherwise noted, specific frequency values, which change with board suffix are listed in Table 1-2 for each board within the series.

1.,·' Connect -12 volt power supply to pin 1 and ground to to pin 6 and adjust voltage to -12.0 ± 0.1 volts.

2. Connect +12 volt power supply to pin 3 and ground to pin 7 and adjust voltage to +12.0 ± 0.1 volts.

3. Connect 51 ohm, 5%, 1/4 watt load resistor from pin B to ground (pin 8).

4. Monitor TP3 with oscilloscope for a -12.0 ± 1.0 volt indication.

5. Connect +5V power supply to pin P and ground to pin 9 and adjust voltage to +5.0 ± 0.5 volts.

6. Monitor TP3 with oscilloscope for a +12.0 ± 1.0 volt indication.

7. Connect frequency counter input to TP9.

8. Monitor TP9 with oscilloscope for a 2.0 ± 0.5 volt peak-to-peak sine wave.

9. Insure the frequency counter indication corresponds to the nominal oscillator frequency± 50 Hz for the board under test. If the indication is incorrect, adjust L2 for the proper nominal oscillator frequency.

NOTE

Slight frequency drift (less than 50 Hz) from the nominal: oscillator frequency is nor-· mal and should be ignored.

5926, p. 5-3

WABCO ~

10. Connect 600 ohm, 5%, 1/2 watt load resistor from pin 14 to pin 15 and monitor voltage across this resistor with the AC VTVM.

11. Connect function generator to pin Land adjust for a 1.0 volt-nominal peak-to-peak sine wave at the line-center frequency, which is stamped on the

· upper r·ight· corner of each board.

NOTE

Line center frequencies for each board are also listed in Table 1-2.

12. Insure AC VTVM indicates +10.0 ± 0.5 dbm. If not, adjust Rl28 for the correct indication.

13. Monitor TP7 with oscilloscope for a sine wave in ·which the signal peaks are not clipped.

14. Sweep function generator frequency 200 Hz either "side of the line_center frequency for the board under test. The AC VTVM should indicate +10.0 ± 0.5 dbm within this range .

. NOTE

In step 14, inductors (potcores) L3, L4 and LS have been adjusted at the time of manufacture and should not be disturbed. If a faulty potcore is suspected return the board to the factory for replacement and/or alignment.

15. Disconnect +5 volt power supply from pin P. The ~C VTVM indication should drop to -60 dbm or lower.

5926, p. 5-4

THIS PAGE INTENTIONALLY LEFT BLANK

5926 I P• 5-5

WABCO ~

f°l'...-'21

•. --~C107

I ,-, L__j

L B R122·

B Tl -.. n O flRl24 n 1

\ LI LJ r . , ( );;" •? L

BK • \

......____..... Cl7

···E~ L5/--- C18

PRI.

I ,,

'_/ (~

'_J L_ CI05LJ_

\ nRI05

· A A w. LI

~ __.,rPRI.~

~ ~· t "\ _Jn ~ .TP2

[

[

r

EB UN451054-

Rll2 c]

/ I

TP3c, • ~

\.. .I 02

RI08 f1 LJ

CI06

\ \ ) t2'----

R 102 ]

] RI03

] RI04

C101 0102

-,

• , Ill I BU. O. R. · BR. BK.

TPl 1 ~1~!.:I ======-., R 125

CI02

LEB

592"6, p. 5-6

Rl26

-,

L .J

V U T S R P N M L K J H F E D C 8 A (COMPONENT SIDE)

181716151413121110 9 8 7 6 5 4 3 2 1 (FOILSIDE)

Figure 5-1. Transmitter Filter Board Layout

PARTS.LIST

TRANSMITTER FILTER N4.51054-:76XX

ITEM

ClOl, Cl02, Cl03~ Cl08

Cl06, Cl09 Cl07 CllO DlOl,. Dl02 L2, Cl04,&Cl05;

L3&Cl7; L4&Cl8; L5&Cl9

LG, L7 Q2 Q4, Q6, Q7 Q8 Q9 RlOl, Rl29 Rl02 Rl03 Rl04, Rl05 Rl06 Rl07 Rl08 Rl09, RllO Rlll Rll2 Rll3 Rll4 Rll5 Rll6 Rl18. Rll9 Rl20 Rl21 Rl22, Rl23 R124 Rl25 Rl26 Rl28 Rl30 .-Tl T2 Jumper

(See Figure 5-lf · ·

DESCRIPTION

CAPACITOR, 4.7 UFD

CAPACITOR, 1 UFD CAPACITOR, 0.5 UFD CAPACITOR, 27 UFD DIODE, DI52 INDUCTOR, POTCORB

CHOKE TRANSISTOR, EN3906 TRANSIS.TOR, EN3904 TRANSISTOR, 2N4922 TRANSISTOR, TIS73 RESISTOR, lK RESISTOR, l.8K RESISTOR, 510 ohms RESISTOR, 390 ohms RESISTOR, 300 ohms RESISTOR, 270 ohms RESISTOR, lOK RESISTOR, 68 ohms RESISTOR, 4. 7K RESISTOR, 100 ohms RESISTOR, 680 ohms' RESISTOR, 560 ohms RESISTOR, 68 ohms RESISTOR, lOOK 'RESISTOR, 39K RESISTOR, 2.7K RESISTOR, 10 ohms RESISTOR, 33 ohms' RESISTOR, 200 ohms RESISTOR, 820 ohms RESISTOR, 4.3K RESISTOR, l.8K POTENTIOMETER, lK RESISTOR, 18K TRANSFORMER TRANSFORMER WIRE, 22 SOLID W.

PART NO.

'J706422

;J706120 J706119 J706678

'J723555 *

J709161 J731398-0034 J731398-0033 J731397

, J731341 J735031 J735139 J735159 J735236 J735519-0073 J735244 J735053 J735519-0012

. J735034 J735050 J735047 J735247 J735045 J735137 J735039 J735238 J720881 J721247 J721250 J720774 J723005 J720825 J620719 J735069 N451039-1004 N451039-1003 A045541-0008

* These components change with boarq. suffix. Refer to the following tabulatiQn for part numbers.

WABCCI ~

5926, p. 5-7

·WABCD ~

PCB SUFFIX

-7603

-7604

-7605

-7606

-7607

PARTS LIST

TRANSMITTER FILTER N451054-7603 THRU N451054-7636

ITEM VALUE* PART NUMBER

L3 59.68 N451030-1811 Cl7 0.189 L4 59.68 N451030-1811 Cl8 0.189 LS 33.95 N451030-1812 Cl9 0.332 L2 0.842 N451030-1909 Cl04 0.18 Cl OS 0.018 L3 50.93 N451030-1813 Cl7 0.00291 L4 50.93 N451030-1813 Cl8 0.00291 LS 0.52 N451030-1814 Cl9 0.283 L2 1.56 N451030-1910 Cl04 0.18 ClOS 0.018 L3 50.93 N451030-1815 Cl7 0.00211 L4 50.93 N451030-1815 Cl8 0.00211 L5 0.379 N451030-1816 Cl9 0.283 L2 1.82 N451030-1911 Cl04 0.18 Cl05 0.018 L3 50.93 N451030-1817 Cl7 0.000737 L4 50.93 N451030-1817 Cl8 0.000737 LS 0.133 N451030-1818 Cl9 0.283 L2 4.49 N451030-1912 Cl04 0.18 Cl05 0.018 L3 50.93 N451030-1819 Cl7 0.000622 L4 50.93 N451030-1819 Cl8 0.000622 LS 0.112 N451030-1820 Cl9 0.283

*Value of capacitors is measured in rnfd;value of inductors is measured in rnh.

5926, p. 5-8

PARTS LIST

TRANSMITTER FILTER N451054-7603 THRU N451054-7636 (CONTINUED)

PCB SUFFIX ITEM VALUE* PART NUMBER

-7607 L2 5.84 N451030-1913 (Cont.) Cl04 0.18

Cl05 0.018 -7608 L3 50.93 N451030-1834

Cl7 0.0215 L4 50.93 N451030-1834 Cl8 0.0215 LS 3.87 N451030-1835 Cl9 0.283 L2 0.983 N451030-1936 Cl04 0.18 Cl05 0.018

-7609 L3 50.93 N451030-1836 Cl7 0.0069 L4 50.93 N451030-1836 Cl8 0.0069 LS 1.25 N451030-1837 Cl9 0.2829 L2 1.189 N451030-1937 Cl04 0.18 Cl05 0.018

-7610 L3 50.93 N451030-1838 Cl7 0.00429 L4 50.93 N451030-1838 Cl8 0.00429 LS 0.773 N451030-1839 Cl9 0.2829 L2 1. 356 N451030-1938 Cl04 0.18 Cl05 0.018


-7612 L3 50.93 N451030-1842 Cl7 0.00108 L4 50.93 N451030-1842 Cl8 0.00108

*Value of capacitors is measured in mfd;value of inductors is measured in mh.

WABCD ~

5926, p. 5-9

WABCO ~

PARTS LIST

TRANSMITTER FILTER N451054-7603 THRO N451054-7636 (CONTINUED)


-7612 LS 0.195 N451030-1843 (Cont.) Cl9 0.2829

L2 2.88 N451030-1940 Cl04 0.18 Cl OS 0.018

-7613 L3 50.93 N451030-1844 Cl7 0.00088 L4 50.93 N451030-1844 Cl8 0.00088 LS 0.159 N451030-1845 Cl9 0.283 L2 3.551 N451030-1941 Cl04 0.18 Cl OS 0.018




-7617 L3 93.16 N451030-1852 Cl7 0.00296


5926, p. 5-10

PARTS LIST



-7617 L4 93.16 N451030-1852 (Cont.) Cl8 0.00296

LS 0.532 N451030-1853 Cl9 0.517 L2 1.250 N451030-1945 Cl04 0.18 Cl05 0.018

-7618 L3 93.16 N451030-2201 Cl7 0.0023 L4 93.16 N451030-2201

, ... Cl8 0.0023 LS 0.413 N451030-2202 Cl9 0.517 L2 1. 35 N451030-1946 Cl04 0.18 Cl05 0.018





WABCD ~

5926, p. 5-11

WABCD ~

PARTS LIST

. TRANSMITTER FILTER N451054-7603 THRU N451054-7636 (CONTINUED)

PCB SUFFIX ITEt-1. VALUE* PART NUMBER

-7622 ' L3 93.16 N451030-2209 Cl7 0.001 L4 93.16 : N451030-2209 Cl8 .0.001 '

..

LS 0.189 ··-N451030-2210

Cl9 0.517 L2 1. 88 N451030-1950 Cl04 0.18 Cl05· 0.018

-7623 L3 . 93. 16 N451030-2211 Cl7 0.00082 L4 93.16 N451030-2211 Cl8 0.00082 LS 0.148 N451030-2212 Cl9 0.517 L2 2.349 N451030-1951 Cl04 0.18 Cl OS 0.018

-7624 L3 93.16 N451030-2213 Cl7 0.00071 L4 93.16 N451030-2213 Cl8 0.00071 LS 0.128 N451030-2214 Cl9 0.517 L2 2.42 N451030-1952 Cl04 0.18 ClOS 0.018




5926, p. 5-12

PARTS LIST




-7628 L3 93.16 N451030-2221 Cl7 0.00045

'" L4 93.16 N451030-2221 Cl8 0.00045 LS 0.0803 N451030-2222 Cl9 0.517 L2 3.83 N451030-2304 Cl04 0.18 Cl05 0.018


-7630 L3 93.16 N451030-2225 Cl7 0.00037 L4 93.16 N451030-2225 Cl8 0.00037 LS 0.0657 N451030-2226 Cl9 0.517 L2 5.06 N451030-2306 Cl04 0.18 ClOS 0.018



WABCD ~

5926, p. 5-13

WABCD ~

PARTS LIST

TRANSMITTER FILTER Ni51054..;.1603 THRO N451054-7636 (CONTINUED)


-7632 L3 27.09 N451030-2229 Cl7 0.011· L4 27.09 N451030-2229 Cl8 0.011 LS 1. 93 N451030-2230 Cl9 0.15 L2 1. 289 N451030-2308 Cl04 0.18 Cl OS 0.018

-7633 L3 27.09 N451030-2231 Cl7 0.0051

.•

L4 27.09 N451030-2231 Cl8 0.0051 LS 0.925 N451030-2232 Cl9 0.150 L2 1. 66 N451030-2309 Cl04 0.18 Cl OS 0.018





5926, p. 5-14

0 GNO l O PIN 6.7,8,9

L7

+12 0 IVV

L6

.12c:io----

,_-------------<> PIN 3 & C

0101 01-52

...__-4,-----4--------o PIN 1 & A

0102 01-52

~

- C102 4.7MF

TP3

TP4 WHITE

PIN L 0------4t------

C109 IMF

R130 18K

PINK

PINOO I~

R129 1K

R128 lK

25 TURNS

+12

02 EN3906

R116 100K

C107 5MF D D

-7603~-8201'1 RESISTOR ALL OTHER 8DSJUMPER

07 EN3904

f C108 i- 4 7MF

R118 39K

R119 2 7K

R113 680

R115 68K

R110 68

R101 lK

06 EN3904

Rill 4 7K

V>N

TP7

VIOLET

~

I

08 2N4922

R120 10

R121 33

TP8

r YELLOW

I

+ CllO

- 27MF

~

OPIN P

12

•12

0--PIN 10.11

TP6

R102 1.8K

RIO~ sl'o

(aROWN

C105 018MF

R105

•12

R109 68

C104 18MF

l C103 4.7MF

TP9 ORANGE

WABCO ~

C106 r R106

IMF ~ O PINB UAA • • 11 ••---vvv

390

"'!"

TP5 TP1

y PINS

PIN 17

LS C19 LJ n"' PIN 15 PIN 16 PIN 14

l TP2

·coMPONENTS CHANGE WITH BOARD NUMBER

Figure 5-2. Transmitter Filter Schematic Diagram

5926, p. 5-15/16

5-5 TRANSMITTER OSCILLATOR (N451054-77XX)


WABCD ~

The printed circuit board layout (figure 5-3) is provided to aid the technician in locating components,test points and pins as noted in test and adjustment procedure,and the schematic diagram (figure 5-4) is provided as a maintenance aid.

5-4.2 Test and Adjustment Procedures


1. ·· 'connect +12 volt power supply output to pin 3 and ground to pin 7 and adjust voltage for +12.0 ± 0.1 volt.

2. Connect -12 volt power supply output to pin 1 and ground to pin 8 and adjust voltage for -12.0 ± 0.1 volt.

3. Connect 1000 ohm, 5%, 1/4 watt load resistor from pin 15 to pin H.

4. Connect frequency counter input to TP3.

5. Insure frequency counter indicates 45.0 ± 0.050 KHz for the -7702, -7703 and -7704 boards and 14.8 ±0.050 KHz for the -7705 board. If the counter is incorrect, adjust Ll to obtain the correct frequency counter indication. Record this frequency.

NOTE

Slight frequency drift (less than 50 Hz) is normal and should be ignored.

Omit steps 6 and 7 for the -7705 board.

6. Connect +5 volt power supply to pin 17 and ground to pin J and adjust voltage for +5.0 ± 0.1 volts.

5926, p. 5-17

WABCD

~

7. Insure frequency counter indicates the difference between the frequency recorded in step 5 and the frequency shift value listed below for the board under test (±20 Hz). Remove power supply from pin 17 after test.

Board Number

-7702 -7703 -7704

Frequency Shift (Hz)

420 840

1680

8. Connect function generator output to pin E and ground to pin H. Use a 1.0 mfd mylar capacitor for de blocking when connecting to pin E.

9. Adjust the function generator for a 270 ± lOmv P-P sinewave at the frequency listed below fa.r the board under test.

Board Number

-7702 -7703 -7704 -7705

NOTE

Nominal Frequency (Hz)

35,000 35,000 35,000 10,000

Adjust function generator frequency using the frequency counter.

10. Monitor TP6 with oscilloscope for a 2.5 ± 0.2 volt sinewave. Adjust R231 for the least amount of distortion on the sinewave.

5926, p. 5-18


5926, p. 5-19

.Wf;IBCD ,-~

r TPl •••• TP2 TP8 TP7 TP3

EB -,

WABCO R226 c: :J UN451054-7701

5926, p. 5-20

~·'Y' o---" R227

C:J

n UR232

C214 (}

R212 ~ I' l9 LB I I /, r\ \.J '- ./ , ../ C213 ~---

C217 r- --, C~5-L_ __J r---, c21s_

L..- ___J C218

C208

n n UR203 w

R218

C::J TP4 .R225

R201 0TP5

I \C210 \ I

nR204

LJ R211 c R230 c ]

~ :J R224 IC! I \ I C209\ I

03

R221 r r, n n I

u

_""] R217 ,-

•I r~2os

UR210

C:J R215 ---,

C207 L _J R214

I -,

L _J

n R216 .C205

-1 LI r, r.c2os 11 n C221( ) { ) n tj

I le219 v v .~ ... LJ C204

L_j f nR2os

TP6 t.:~ · : ~ Li • . 01 / ~) 7222 C202

0.,,, ~ r1~- i+l:'1

-,

L

u" __/ Well ~LJULJ C201 l7 l6

.J

V U T S R P N M L K J H F E D C B A (COMPONENT SIDE)

181716151413121110 9 8 7 6 5 4 3 2 1 (FOILSIOE)

Figure 5-3. Transmitter Oscillator Board Layout

PARTS LIST

TRANSMITTER OSCILLATOR N 4·510 54-77XX (See Figure 5-3)

ITEM

C201, C202, C203, C208, C212

C206 C207, C219 C209, C210 C211, C215, C216,

C220 C213 C214 C217 C218 C221··' 0201, 0202 0203 I Cl

IC2

Ll, C204&C205 L6, L7 LB L9 Ql, Q3, QS R201, R202 R203 to R206 R207 R208 R209 to R212,

R232 R213, R214, R230 R215 R216, R217, R218 R219, R220, R221 R222 R223 R224 R225 R226 R227 R228 R229 R231 R233

DESCRIPTION

CAPACITOR, 4.7 UFO

CAPACITOR CAPACITOR, 1 UFD CAPACITOR, 10 PF CAPACITOR, 0.001 UFO

CAPACITOR, 100 PF CAPACITOR, 3 PF CAPACITOR, 0.018 UFO CAPACITOR, 0.0056 PF CAPACITOR DIODE, DI52 DIODE, IN958B INTEGRATED CIRCUIT,

MC1496L INTEGRATED CIRCUIT,

709 INDUCTOR, POTCORE CHOKE INDUCTOR, 1.5 MH INDUCTOR, 6.8 MH TRANSISTOR, EN3904 RESISTOR, 3.92K RESISTOR, lK RESISTOR, 1.SK RESISTOR, l.8K RESISTOR, 510 ohms

RESISTOR, 390 ohms RESISTOR, 300 ohms RESISTOR, lOK RESISTOR, 51 ohms RESISTOR, 68 ohms RESISTOR, 4.7K RESISTOR, 6.8K RESISTOR, 39.2K RESISTOR, !SOK RESISTOR, 8.06K RESISTOR, 30.9K RESISTOR, 1. SK POTENTIOMETER, SOK RESISTOR

PART NUMBER

J706422

* J706120 J706934 J706242

J702636 J706929 J706560 J703115

* J723555 J723801 J715029-0063

J715029-0037

* J709161 J706432 J709205 J731398-0033 J735519-0029 J735031 J721064 J735139 J735159

J735236 J735519-0073 J735053 J735407 J735519-0012 J735034 J735032 J735519-0107 J735166 J735126 J735319 J735063 J620850-·0027

* *These components change with board suffix.

Refer to the following tabulation for part numbers.

WABCCI ~

5926, p. 5-21

WABCD ~

PARTS LIST

TRANSMITTER OSCILLATOR. N451054-7702 THRU N451Q54....;77(j5

PCB SUFFIX ITEM VALUE PART NO. ... .

.. -7702 C206 270 PF J709144-0057

C221 30 PF J702815 LI* --- N451030-1908-19 R233 1 K J735031

-7703 C206 560 PF J709119 C221 62 PF J702808 LI* --- N451030-1908-19 R233 1 K J735031

-7704 C206 1200 PF J702625 C221 82 PF J702807 LI* --- N451030-1908-19 R233 1 K J735031

-7705 LI* --- N451030-1914-19 R233 620 ohms J735049

* LI includes C204 and C205.

5926, p. 5-22

lllltH I .IK

l!ill@II §10

R222 68

+12

C203 4-7MF

+~ _ __,,___-L-r-1 '!!'

Rlll 3 HO

C204 • f 8MF

C207 IMF

R216 I 01<

TP2

J81110WN O t

GNO l O PIN 1 1 8 ,t-+,.J

+12 n,.. __ _

01-52 0201

TP8

PIN 3 & C

TP7

-12 0 IUU PIN I & A

01-52 0202

::' C202 + 4.7W

TP3 ORANGE

TPI

rYELLOW

R215 300

PINE

_L . -------i "f j_ C209

R217 I OK

R210 510

I OPF

'l218<R220 1 OK <;; 51

R231 SOK

4 TURNS OPIN 17

Figure 5-4.

R219 51

R221 51

R2 I I 510

0203 IN958B

R203 IK

10

4

14-

C210 r IOPF

"f

C208 4·7MF

R205 IK

lfV'l1 3

~ IC I MC

1496L r R224 6. BK

I

R201 3.9K

R202 3.9K

+12

C2!5

.OOIMFi

TP4

TP5

R2 30 390

:- C2 l2 + 4.7MF

R227 a.OSK

R228 30.9K

-12

-12

4

R226 I SOK

+12

2 I C2 I 4 · 3PF

R229 I ..L C213 '·"lJ '"~

Transmitter Oscillator Schematic Diagram

C216 r .OOIMF

C217 ,018MF

C2 I 8 • 00 56MF

R206 IK

C220 .OOIMF

+12

WRBCC

~

TP6

y R:33

~ c21s PIN 15

IMF

-12

* COMPONENTS CHANGE WITH BOARD NUMBER

F451054-77A Rev. 2

5926, p. 5-23/24

5-6 RECEIVER FILTER (N451054-83XX)


WABCO ~

The printed circuit board layout (figure 5-7) is provided to aid the technician in locating component, test points and pins as noted in test and adjustment procedure and the schematic diagram (figure 5-8) is provided as a maintenance aid.

5-6.2 Test and Adjustment Procedure


CAUTION

Inductor (potcores) Ll, L2, L3, L4, LS, L6, L7, LS, and L9 have been adjusted at the time of manufacture and should not be disturbed. If a faulty potcore is suspected return the board to the manufacturer for replacement and/or alignment.

1. Connect test equipment as shown in figure 5-5.

2. Adjust function generator for a sine wave at the line center frequency for the board under test.

3. Connect AC VTVM input to TPl and ground to TP2. Adjust function generator level to obtain a ,, -20.0 ± 0.1 dbm indication on AC VTVM.

COUNTER

120on BOARD UNDER TEST

OUT 10 16

120on

FUNCTION GENERATOR 1on 1200 1200

GND 12 4

Figure 5-5. Test Setup No. 1, Receiver Filter

AC VTVM

5926, p. 5-25

WABCO ~

4. Connect AC VTVM input to TP3. and ground to TP2. Insure AC VTVM indicates -21.0 ± 1.0 dbm.

5. Connect test equipment as shown in figure 5~6.

6. Adjust function generator for a 1.0 volt rms sine wave signal at the lower frequency for the board under test.

7. Connect oscilloscope input to pin 11 and ground to pin 18. Insure the oscilloscope indicates a 14.0 ± 0.5 volt peak-to-peak symetrical square wave.

NOTE

Omit steps 8 through 11 for the -8305 board.

8. Connect pins 7 and 11 together . . •'

9. Insure generator is adjusted as in step 6. Connect AC VTVM input to pin 13 and ground to pin 18. Insure AC VTVM indicates 4.7 ± 0.2 volts rms; if not, adjust R9.

10. Adjust generator to line center frequency. Connect AC VTVM input alternately from pin 13 to pin 17 with pin 18 as ground. Insure voltages at both pins are equal ± 0.5 volts; if not, adjust R12.

11. Adjust function generator frequency alternately between the upper frequency and the lower frequency listed in Table 5-1. At the upper frequency and lower frequency, insure voltages at pin 17 and pin 13 correspond to those listed in Table 5-1 for the board under test.

COUNTER

' 1 l 11 7

OUT -14 13 -FUNCTION BOARD

GENERATOR UNDER TEST

GND 18 17 .., 3 1

GND +12.0V I + POWER -12.0V SUPPLY -

Figure 5-6. Test Setup No. 2, Receiver Filter

5926, p.5-26

WABCD ·.,~

TABLE 5-1 •. RECEIVER FILTER CHARACTERISTICS

~· . ' '. '¢• ·--·. :se....,:·.i;.~~:-:1~-·

VOLTAGE (± .0. 4 VOLTS .RMS) at FREQ. (± 15 Hz) UPPER FREQ. LOWEJ~ FREQ.

BOARD NO. UPPER LOWER PIN 17 PIN 13 PIN 17 PIN 13 ·J

·•·

-8301 13,700 12,500 2.5 4.7 4·. 7 " 2.5

-8302 16,000 14 I ~,00 2.5 4.7· 4. 7 .. 2.5 -8303 26,600 ·25 ,.400 2.5 4.7 4.7 2.5 -8304 28,900 27,700 2. 5, 4.7 4~7 2.5 -8306 5,500 4,300 2.5 4.7 4 • 7 2.5 -8307 9,100 7,900 2.5 4.7 4. 7 ·, 2.5 -8308 11,400 10,200 2.5 4. 7 · 4. 7 · 2.5 -8309 19,700 18,500 2.5 4.7 4.7 2.5 -8310 22,000 20,800 2.5 4.7 4~7 : 2.5 -8311 24,300 23,100 2.5 4.7 4~7 2.5 -8312 5,200 4,600 2.5 4.7 4. 7 · 2.5 -8313 6,500 5,900 2.5 4.7 4. 7 f.' 2.5 -8314 8,600 8,000 2.5 .. 4. 7 4 .• , .. , :!' 2.5 -8315 9,900 9,300 2.5 "'4. 7 4.7 2.5 -8316 11,200 10,600 2.5 4:. 7 4.7 2.5 -8317 12,500 11,900 2.5 4}. 7 4.7 2.5 -8318· 13,800 13,200 2.5 4:. 7 4.7 2.5 -8319 15,100 14,500 2.5 4.7 4. ·7 2.5 -8320 16,400 15,800 2.5 4.7 4.7 2.5 -8321 18,500 17,900 2.5 4.7 4.7 2.5 -8322 19,800 19,200 2.5 4.7 4.7 2.5 -8323 . 21,100 20,500 2.5 4.7 4.7 2.5 -8324 22,400 21,800 2.5 4.7 4.7 2.5 -8325 23,700 23,100 2.5 4.7 4.7 2.5 -8326 25,000 24,400 2.5 4.7 4.7 2.5 -8327 26,300 25,700 2.5 4 •. 7. 4·. 7 2.5 -8328 27,600 27,000 2.5 4.7 4.7 2.5 -8329 28,900 28,300 2.5 4.7 4.7 2.5 -8330 10,700 8,300 2.5 4.7 4.7 2.5 -8331 14,800 12,400 2.5 4.7 4.7 2.5 -8332 · 21,600 19,200 2.5 .. 4. 7 · 4. 7 2.5 -8333 2.5,800 23,400 2.5

<,

4.7 4.7 2.5 -8334 30,000 25,600 2~~ 4.7 . 4. 7 2.5

\.:1 •,

.' ·'

'· '.

~·· .. . .,. .,_. ~ ':\~-·;- .. ··:'!,;, ;

; ;·.· ·:;_ }i t .. ~

•... 5 9 2 6 , p:. 5,... 2 7

WABCD ~

HZ EB TPJ .TP2.

....--........, UN451054-830

5926, p. 5-28

L J

V U T S R P N M L K J H f E O C B A (COMPONENT SIDE)

1817161514131211109 8 7 6 5 4 3 21 (FOILSIDE)

Figure 5-7. Receiver Filter Board Layout

PARTS LIST

RECEIVER FILTER N451054083XX (See Figure 5-7)

ITEM

C3, C6 ClO** Cll** C12, Cl3 C14, Cl6 C15 Dl, 02, 04 to 07, 09, 010

03 08 011 ICl ·, Ll&Cl, L3&C2,

L4&C4, L6&C5, L7&C7, L8&C8, L9&C9

L2, LS LlO Rl R2 R3 R4 RS R6** R7 R8 R9, Rl2 RlO, Rll Tl

DESCRIPTION

CAPACITOR CAPACITOR, 100 PF CAPACITOR, 3 PF CAPACITOR, 0.001 UFO CAPACITOR, 4.7 UFO CAPACITOR, 0.5 UFO DIODE, IN914A

DIODE, IN5233B DIODE, IN5235B DIODE, DI52 INTEGRATED CIRCUIT, INDUCTOR, POTCORE

INDUCTOR, POTCORE CHOKE RESISTOR, 4.3K RESISTOR, l.8K RESISTOR, 16K RESISTOR, 4.7K RESISTOR, 330 ohms RESISTOR, 33K RESISTOR, 1. SK RESISTOR, 220 ohms POTENTIOMETER, 2K

I RESISTOR TRANSFORMER

PART NUMBER

* J702636 J706929 J706242 J706422 J706119 J726031

J726150-0056 J726150-0057 J723555 J715029-0037

*

* J709161 J723005 J720825 J735400 J735034 J735060 J735037 J735063 J735071 J620850-0028

* N451039-1003

** On PCB suffix -8305 only, ClO, Cll and R6 are as follows.

ClO ell R6

CAPACITOR, 510 PF CAPACITOR, 30 PF RESISTOR, 1000 ohms

J709144-0040 J702815 J735031

*These components change with board suffix. Refer to the following tabulation for part numbers.

WABCC ~

5926, p. 5-29/30

WABCD ~

~. PARTS LIST RECEIVER FILTER, N451054-8301 THRU N451054-8334

POT CORE POT CORE POT CORE POT CORE POT CORE POT CORE POT CORE POT CORE POT CORE N451030 N451030 N451030 N451030 N451030 N451030 N451030 N451030 N451030 C3 C6 RIO Rll

SUFFIX ll & Cl l2 L3 & C2 L4 & C4 L5 L6 & CS L7 & Cl L8 & C8 L9 & C9 PAR1 NO. MFD. PART NO. MFD. PART NO. SH .• OHMS PART NO. SH. OHMS

SUFFIX SH. SUFFIX SH. SUFFIX SH. SUFFIX SH. SUFFIX SH . SUFFIX SH. SUFFIX SH SUFFIX SH • SUFFIX SH.

-8301 -2101 21 -2106 21 -2102 21 -2103 21 -2107 21 -2104 21 -2105 21 -2108 21 -2109 21 J709145-0073 .056 J709145-0071 .033 J735519-0l 18 526A 2740 J735519-0123 526A 3650

J709145-0072 .003

-8302 -2110 21 -2115 21 -2111 21 -2112 21 -2116 21 -2113 21 -2114 21 -2117 21 -2118 21 J709145-0070 .05 J709145-0069 .027 J735519-0125 526A 2670 J735519-0122 526A 3570 J706235 .000240 )709145-0068 .001

-8303 -2119 21 -2124 21 -2120 21 -2121 21 -2125 21 -2122 21 -2123 21 -2126 -2127 21 J709145-0069 .027 J709145-0035 .015

J735519-0124 526A 2610 )735519-0122 526A 3570 21 J709145-0072 .003 J709145-0067 .0015

-8304 -2128 21 -2133 21 -2129 21 -2130 21 -2134 21 -2131 21 -2132 21 -2135 21 -2136 21 J709145-0069 .027 )709145-0035 .OlS )735519-0124 526A 2610 J735519-0122 526A 3570 )702638 .000300 J706542 .000180

-8305 -2137 21 -2138 21 -2139 21 -2138 21 -2137 21 J709145-0076 .22 )709145-0076 - - - - - - - - )709145-0075 .012 J709145-0075 - - - - - - -

-8306 -2140 21 -2145 21 -2141 21 -2142 21 -2146 21 -2143 21 -2144 21 -2147 22 -2148 21 J709145-0138 .15 J709145-0149 .082 J735519-0142 526A 3160 J735519-0150 526A 3830 J709l45-0134 .OI )709145-0158 .0075

-8307 -2149 21 -2154 21 -2150 21 -2151 21 -2313 23 -2152 21 -2153 21 -2314 23 -2315 23 )709145-0149 .082 J709145-0070 .05

526A 2870 J735519-0123 526A 3650 )709145-0134 .01 )709145-0059 .000737 J735519-o143

-8308 -2316 23 -2321 23 -2317 23 -2318 23 -2322 23 -2319 23 -2320 23 -2323 23 -2324 23 )709145-0152 .068 J709145-0150 .o39 I

1735519_0144 526A 2800 J735519-0123 526A 3650

)709145-0037 .00378 )709145-0059 .000737

-8309 -2325 23 -2330 23 -2326 23 -2327 23 -2331 23 -2328 23 • -2329 23 -2332 23 -2333 23 )709145-0150 .C39 )709145-0156 ·022 I J735519-0125 526A 2670 )735519-0122 526A 3570 .. )709145-0067 .0015 )709145-0060 .000622

-8310 -2334 23 -2339 23 -2335 23 -2336 23 -2340 23 -2337 23 -2338 23 -2341 23 -2342 23 )709145-0071 .033 )709145-0137 .02 )735519-0125 526A 2670 )735519-0122 526A 3570 )709145-0072 .003

-8311 -2343 23 -2348 23 -2344 23 -2345 23 -2349 23 -2346 23 -2347 23 -2350 23 -2351 23 )709145-0148 .03

)709145-0136 .018 )735519-0124 526A 2610 )735519-0 122 526A 3570 )709145-0126 .0027

-8312 -2352 23 -2604 26 -2353 23 -2601 26 -2605 26 -2602 26 -2603 26 -2606 26 -2607 26 )709145-0138 .15 )709145-0149 .082

)735519-0145 526A 6650 )73511 526 7320 )709145-0133 .0082 )709145-0040 .00611

-8313 -2608 26 -2613 26 -2609 26 -2610 26 -2614 26 -2611 26 -2612 26 -2615 26 -2616 26 )709145-0154 .12 )709145-0152 .068 )735083 526 6490 J73511 526 7320 )709145-0078 .005 )709145-0067 .0015

-8314 -2617 26 -2622 26 -2618 26 -2619 26 -2623 26 -2620 26 -2621 26 -2624 26 -2625 26 )709145-0149 .082 )709145-0070 .05

)735084 526 6340 J735489 526A 7150 )709145-0135 .012 )709145-0124 .0018

-8315 -2626 26 -2631 26 -2627 26 -2628 26 -2632 26 -2629 26 -2630 26 -2633 26 -2634 26 )709145-0152 .068 )709145-0150 .039 )735084 526 6340 )735489 526A 7150 J709145-0153 .0125 J709145-0131 .0056

-8316 -2635 26 -2640 26 -2636 26 -2637 26 -2641 26 -2638 26 -2639 26 -2642 26 -2643 26 )709145-0152 .068 )709145-0150 .039 )735084 526 6340 )735489 526A 7150 )709145-0126 .0027

-8317 -2644 26 -2649 26 -2645 26 -2646 26 -2650 26 -2647 26 -2648 26 -2651 26 -2652 26 )709145-0073 .056 )709145-0071 .033

)735085 526 6190 J735489 526A 7150 I J709145-0132 .0068 ,709145-0125 .0022

-8318 -2653 26 -2705 27 -2701 127 -2702 27 -2706 27 -2703 27 -2704 27 -2707 27 -2708 27 ' )709145-0073 .056 )709145-0148 .03 )735085 526 6190 J735489 526A 7150 )709145-0080 .0012 )709145-0124 .0018

-8319 -2709 27 -2714 27 -2710 27 -2711 27 -2715 27 -2712 27 -2713 27 -2716 27 -2717 27 )709145-0070 .05 )709145-0069 .027 )735085 526 6190 )735489 526A 7150 J709145-0125 .0022 )709145-0157 .002

-8320 -2718 27 -2723 27 -2719 27 -2720 27 -2724 27 -2721 27 -2722 27 -2725 27 -2726 27 J709145-0151 .047 )709145-0156 .022

)735085 526 6190 )735489 526A 7150 )709145-0068 .001 )709145-0130 .0047

-8321 -2727 27 -2732 27 -2728 27 -2729 27 -2733 27 -2730 27 -2731 27 -2734 27 -2735 27 1709145-0150 .039 )709145-0156 .022

)735085 526 6190 )735489 526A 7150 )709145-0082 .0033 )709145-0067 .0015

-8322 -2736 27 -2741 27 -2737 27 -2738 27 -2742 27 -2739 27 -2740 27 -2743 27 -2744 27 )709145-0150 .039 J709145-0156 .022 )735085 526 6190 )735489 .526A 7150 )709145-0060 .00062:

-8323 -2745 27 -2750 27 -2746 27 -2747 27 -2751 27 -2748 27 -2749 27 -2752 27 -2753 27 )709145-0071 .033 )309145-0137

. 0~!22 J735085 526 6190 )735489 526A 7150 J709145-0128 .0039 )709145-0060

-8324 -2801 28 -2806 28 -2802 28 -2803 28 -2807 28 -2804 28 -2805 28 -2808 28 -2809 28 )709145-0071 .033 )709145-0136 .018

)735085 526 6190 )735489 526A 7150 )709145-0157 .OJ2 )709145-0067 .0015

-8325 -2810 28 -2815 28 -2811 28 -2812 28 -2816 28 -2813 28 -2814 28 -2817 28 -2818 28 )709145-0071 .033 )709145-0035 .015

)735085 526 6190 J735489 526A 7150 )709145-0082 .0033

-8326 -2819 28 -2824 28 -2820 28 -2821 28 -2825 28 -2822 28 -2823 28 -2826 28 -2827 28 )709145-0148 .03 )709145-0035 .015

1735085 526 6190 )735489 526A 7150 )709145-0080 .0012 )709145-0125 .0022

-8327 -2828 28 -2833 28 -2829 28 -2830 28 -2834 28 -2831 28 -2832 28 -2835 28 -2836 28 )709145-0069 .027 )709145-0035 .015 )735085 526 6190 )735489 526A 7150 )709145-0126 .0027 )709145-0067 .0015

-8328 -2837 28 -2842 28 -2838 28 -2839 28 -2843 28 -2840 28 -2841 28 -2844 28 -2845 28 )709145-0069 .027 )709145-0035 .015 )735085 526 6190 1735489 526A 7150 )709145-0080 .0012 )709145-0059 .000737

-8329 -2846 28 -2851 28 -2847 28 -2848 28 -2852 28 -2849 28 -2850 28 -2853 28 -2901 29 )709145-0069 .027 )709145-0035 .015 )735085 526 6190 J735489 526A 7150

-8330 -2902 29 -2907 29 -2903 29 -2904 29 -2908 29 -2905 29 -2906 29 -2909 28 -2910 29 J709145-0149 .082 )709145-0150 .039

)735519-0146 526A 1100 J735519-015l 526A 1910 )709145-0068 .001 )709145-0132 .0068

-8331 -2911 29 -2916 29 -2912 29 -2913 29 -29!7 29 -2914 29 -2915 29 -2918 29 -2919 29 )709145-0073 .056 )709145-0148 .03 )72391 52611000 )735519-0152 526A 1870 )709145-0080 .0012 )709145-0038 .0019

)709145-0071 .033 )709145-0137 .02 -8332 -2920 29 -2925 29 -2921 29 -2922 29 -2926 29 -2923 29 -2924 29 -2927 29 -2928 29 J709145-0078 .005 )709145-0068 .001

)735519-0147 526A 909 )735519-0153 526A 1820

)709145-0148 .03 )709145-0035 .015 I -8333 -2929 29 -2934 29 -2930 29 -2931 29 -2935 29 -2932 29 -2933 29 -2936 29 -2937 29 )709145-0067 .0015 )709145-0155 .0025

J735519-0148 526A 887 J735519-0153 526A 1820

I -8334 -2938 29 -2943 29 -2939 29 -2940 29 -2944 29 -2941 29 -2942 29 -2945 29 -2946 29 )709145-0069 .027 )709145-0035 .015 J735519-0149 526A 866 J735519-0153 526A 1820

5926, p. 5-31/32

WAEICD ~

<-~

TP1

Rl I' 4.3K 1/'ZW

9.lK C BU Tl Cl

Ll

9 R2 1.8K 1/'ZW O

4.2K ()--WV'--2 !:1111! TP5

600Q BR

10

135 0 R

8 illl: c I

C2 ;;_J! C4 L4

..._, ----,-------111 • ,.. • r . 11 ,

y~ BI

L2

. I TP3 . ~ . I ~ tuow

. 0

~~ "

DI

TP7 L5

Al TP2

B.ROWN

BK COM.Q

12 4&5

08

LtO 3 11 I TP4 (4l 1N914

I I r t Rlt

I "M. Ct4 t 011 I 13 + I 4.7MF Dl-52

RG • -w 1 ~, I I ~ _ g., l l· c1h -- -- C8 4.7MF

-II l I I l I C13 I I C12 .001 .001

R5 330.Cl I 4 _. .... I I

RB 220J'l. ·-·

C15 I I 709 >·- ... 'V\11/' • I I I , n kf - =C9 R3 -.5MFD 16K o--,· - - - - 5

14 .. I ! 1 1C10•

Cll •

R4 R7 ~ 00 - Dl___2N5233H I R9 R12 I 17 4.7K 1.5K T 2K 2K

18 ·coMPONENTS CHANGE WITH BOARD NUMBER

Figure 5-8. Receiver Filter Schematic Diagram

5926, p. 5-33/34

5-7 RECEIVER DEMODULATOR (N451054-87XX)


WABCD ~

The printed circuit board layout (figure 5-12) is provided to aid the technician in locating component, test points and pins as noted in test and adjustment procedure and the schematic diagram (figure 5-13) is provided as a maintenance aid.


The following is the test and adjustment procedure to be followed to check all boards of the series. Unless otherwise noted, specific frequency values,· which change with board suffix are listed in Table 1-2 for each board within the series.

1. · 'connect +12 volt power supply to pin 3 and ground to pin 18 and adjust voltage for +12.0 ± 0.2 volts.

2. Connect -12 volt power supply to pin 1 and ground to pin 18 and adjust voltage for -12.0 ± 0.2 volts.

3. Connect multimeter input to pin 9 and ground to pin V. Insure multimeter indicates +5.0 ± 0.1 volts.

4. Connect pins 2 and 4 to ground (pin 18).

5. Monitor pins 12 and 15 with oscilloscope. Oscilloscope should indicate a DC level of 0.3 ± 0.3 volts at both pins.

6. Monitor pin 14 with oscilloscope. Oscilloscope should indica~e a DC level of +4.5 ± 0.5 volts.

7. Remove ground lead from pin 4.

8. Adjust R2 fully clockwise.

9. Connect function generator output to pin 4 and ground to pin V and adjust function generator for a 6000 ± 100 HZ sine wave signal at a 1.0 ± 0.1 volt peakto-peak level.

NOTE

Adjust function generator frequency using the frequency counter.

5926, p. 5-35

WABCD ~

10. Monitor TPl with oscil-r-~~~~~~~~~~~~~~~ ..... loscope. Oscilloscope indicates a symmetrical waveform as illustrated in figure 5-9.

11. Monitor pins 12 and 15 ' 8.0±0.8 V 6000 ±. 100 HZ

+ with oscilloscope. Figure 5-9. Oscilloscope indicates a DC level of 4. 5 ± 0. 5 vol ts.

12. Reduce the level at pin 4 until TPlO goes to its low level. The voltage at pin 4 should be between -40 db and -45 db. Connect pins 16 and 17 with a test jumper.

13. Disconnect function generator and adjust for a 8.0 ± 0.2 volt peak-to-peak sine wave signal at 2000 ± 100 Hz. Connect function generator output to pin 17 and ground to pin V.

f 7.2±0.5V

i

14. Monitor TP6 with oscilloscope. Oscilloscope indicates a waveform as illustrated in figure 5-10. Insure oscilloscope remains connected for step 15. Figure 5-10.

15. Adjust function generator level for a 7.0 ± 0.2 volt peak-to-peak indication on oscilloscope.

16. Monitor TP7 with oscilloscope and sweep function generator frequency from 100 to 3000 Hz. Find the frequency at which the signal level at TP7 drops to 4.2 ± 0.3 volts peak-to-peak. The frequency noted should correspond to those listed below for the board under test.

Board Number

-8701 -8702 -8703

NOTE

Monitor frequencies with frequency counter.

17. Disconnect function generator.

Frequency (Hz)

500 ± 30 1000 ± 50 2000 ± 90

18. Connect pins 16 and 17 to ground (pin V) using test jumpers.

5926,p.5-36

,,,.

19. Monito:r the following points with the oscilloscope and insure the oscilloscope indicates the appropriate DC level.

Test Point

TP8 TP4 Pin 11 Pin 8

Voltage Level

-2.7 ± 0.2 volts -0.5 to -1.5 volts

+0.3 ± 0.3 volts +4.5 ± 0.5 volts

20. Connect function generator output to pin 4 and ground to pin V and adjust for a 1000 ± 20 Hz, 2.0 + 0.5 volt peak-to-peak sine wave.

21. Monitor TP5 with oscilloscope. Oscilloscope indicates a DC level of 0.0 ± 100 mv.

WABJ:D ~

22 .,. ·Leave function generator connected and set as in step 20 and remove ground jumpers from pins 16 and 17.

23. Connect pins 16 and 17 together using test jumper.

24. Adjust a second function generator for a 300 Hz, 2.2 volts peak-to-peak sinewave and connect function generatqr output to pin 16. Insure function generator remains connected for steps 25, 26, and 27.

25. Monitor TP5 with oscilloscope. Oscilloscope indicates a signal level of 4.0 ± 0.2 volts peak-to-peak.

26. Adjust function generator for the frequency noted below for the board under test. Adjust amplitude so that TP5 reads 4.0 ± .. 2V P-P.

Board Number

-8701 -8702 -8703

Frequency (Hz)

300 ± 5 600 ± 4

1200 ± 8

27. ·Monitor pin 11 with oscilloscope for waveform illustrated in figure 5-11.

28. Monitor TP9 with oscilloscope and adjust R61 for a 50.0 ± 0.5% duty cycle (symmetrical square wave) as shown in figure 5-11.

+ 3.9 ± 0.5 V _Il__fl_

t ~ 0.3±0.3V

Figure 5-11.

5926, p. 5-37

WABCCI ~

5926, p. 5-38

ii _ C20

L R43 (

n c19l_

LJ TP8 Q • ICB

R45

[ =:]

., [ :J n1 R38 n C16

r 1 R78 LJI C391 + I LJ TP7

II Q C17 e-I, L C14

R35

IC6

• ....

r-I_

R34 [: .:::J

R31 L =:] c :J

RJ2

-, L

TP II TP9 ....

IC2 / C24

022 I=

C2J

c =1

CJB ,,-- -no '---- __) r-- _J

[ JR73 [ ]* C9

n u

...._ IC1 Cl

--be R9§

----· L

I

oir l J LJL2 1·1+

C25

' J

Y U T S R P N M l K J H F E O C B A (COMPONENT SIDE)

1817161514131211109 8 7 6 5 4 3 2 1 (FOILSIOE)

Figure 5-12. Receiver Demodulator Board Layout

PARTS LIST

'RECEIVER DEMODULATOR' N4SlOS.4-·87XX (See Figure 5-12)

Cl C2, C3 C7

ITEM

ca, c9 ClO Cll C12, C22 Cl3 to C20 C21 C23 C24,,,, C25, C26,

C39 C27, C28, C35 to C38

Dl, D2 D4, DS DB to Dll, Dl3,

D14, Dl5, D17, Dl8

Dl2 D20 D21 D22, D23 !Cl

IC2

IC3, IC4, IC12

res

IC6

IC7 to IClO

ICll

Ll, L2 Ql, Q7

DESCRIPTION

CAPACITO~, 100 Pe CAPACITOR, 3 P-F CAPACITOR, .·1. UFD CAPACITOR, 0.47 UFD CAPACITOR, 5 PF CAPACITOR, 0.33 UFD CAPACITOR, SlQ P~ CAPACITOR, 30 PF .CAPACITOR CAPACITOR, l UFD CAPACITOR CAPACITOR, 4.7 UFD

CAPACITOR, 0.001 UFD

DIODE, IN4003 DIODE, IN746 DIODE, IN914A

DIODE, IN5226B DIODE, IN753A, DIODE, IN751A DIODE, IN5232B INTEGRATED CIRCUIT,

709C INTEGRATED CIRCUIT,

309C SINK, HEAT PAD, TRANSISTOR

MOUNTING INTEGRATED CIRCUIT,


MC846P .INTEGRATED CIRCUIT,



710C CHOKE TRANSISTOR, MPS404A

·PART NUMBER

J702636 J706929 ~. J706827 J709055 J706931 J709056 J709144-0040 J702815

* J706120 ·

* J7064"22 ·

J706242

J7235,55 J726081 J726031

J726150-0061 J723914 J723747 J726150-0043 J751029-0046

·J715029-0062

J792254

J715029-0061

J715001

J751029-0037

J71,5026

J715029-0057

J709161 J731398-0028

*These components change with board suffix. Refer to the following tabulation·· for .part numbers.

5 9 2 6 I P • ., 5 ..... 3 9

WABCO "6V'

PARTS LIST

RECEIVER DEMODULATOR N451054-87XX (CONT.)

ITEM DESCRIPTION PART NUMBER

Q2, Q3 TRANSISTOR, 2N5460 J731398-0038 Q4 TRANSISTOR, EN3906 J731398-0034 QS, Q8 TRANSISTOR, EN3904 J731398-0033 Q6 TRANSISTOR, TIS68 J731342 Rl, R59 RESISTOR, 330 ohms J735060 R2 POTENTIOMETER, J602695

500 ohms R3 RESISTOR, 3.9K J735066 R9, R34 RESISTOR, LSK J735063 RlO, R75 RESISTOR, 100 ohms J721194 Rll RESISTOR, 33K J735037 Rl5, R42 RESISTOR, lOK J723793 Rl6, Rl9 RESISTOR, l.58K J735519-0112 Rl7, Rl8 RESISTOR 39.2K J735519-0107 R20 RESISTOR, 680 ohms J735047 R21, R22 RESISTOR, 5.62K J735089 R23, R24 RESISTOR, 1.4 megohms J735519-0168 R25, R26 RESISTOR, 2K J735048 R27 RESISTOR, 20K J735054 R28, R29 RESISTOR, !OK J735053 R31, R32, R33 RESISTOR, lOOK J735165 R35, R37 RESISTOR, 5.9K J735087 R36, R39, R40, RESISTOR, 11.SK J735519-0131

R41 R38 RESISTOR, l.47K J735519-0129 R43 RESISTOR, 5.23K J735519-0130 R44, R60, R62 RESISTOR, 6.34K J735084 R45 RESISTOR, 30.9K J735319 R46 RESISTOR, 6.04K J735086 R47, R79 RESISTOR, 4.99K J735092 R48 RESISTOR, 316 ohms J735519-0128 R49, R64, R30 • RESISTOR, lK J735031 RSO, RSl, RSS, RESISTOR, 1 megohm J735519-0108

R56 R52, R53 RESISTOR, 22.lK J735338 R58 RESISTOR, 51 ohms J735407 R61 POTENTIOMETER, SK J620761 R63 RESISTOR, 16.9K J735076 R76, R77 RESISTOR, 4.7K J735034 R78 RESISTOR, 20K J723794

~These components change with board suffix. Refer to the following tabulation for part numbers~ -

5926, p. 5-40

PCB SUFFIX

-8701

-8702

-8703 '"

PARTS LIST

RECEIVER DEMODULATOR N451054-8701 THRU N451054-8703

CAPACITOR VALUE PART NUMBER

C13 to Cl6 0.054 UFO J709145-0047 Cl? 0.0135 UFO J709145-0046 C18 0.027 UFO J709145-0069 C19, C20 0.054 UFO J709145-0047 C23 0.1 UFO J706827 Cl3 to Cl6 0.027 UFO J709145-0069 C17 0.00675 UFO J709145-0109 C18 0.0135 UFO J709145-0046 C19, C20 0.027 UFO J709145-0069 C23 0.056 UFD J709144-0094 Cl3 to Cl6 0.0135 UFD J709145-0046 Cl7 0.0033 UFD J709145-0082 Cl8 0.00675 UFD J709145-0109 Cl9, C20 0.0135 UFO J709145-0046 C23 0.022 UFD J706844

WABCD ~

5926, p. 5-41/42

/~

I

· 1

l

'I

-12 +12

PIN2.I

C28 .001MF

LI

012 1N52268

TP1

ll5 1N741 JI I f • QPIN7.H

RIO 100 5 ..

PIN4.0

R9 1.51( 5'1. '

Cl 100PF

C3

0.1MF

TPn

rHOWN O l O PIN 11. V

PIN 1.A

D23 1Nl232S

"

L2

TPIO 'V

GREEN

D22 1"523211

TPII

YELLOW

"5

R26 2K 5 ..

~':_~5.S ::.~· R ~:'T~,M aWI

-12

R27 20K s ..

PIN12.N

+5V

,cs MC8'6P

R191% l.58K

+12

?r' HEAT SINK

R171% 39.2K

-12 +12

A18 39.2K 1%

ca SPF

' T

5 .. R20 680

013 1N914A

f z~F c +5

PIN9.K

, .. R23 1.4MEG

D17 1N914A

0----,.-PIN16. T

0 PIN 17.U

, .. R24 1.4MEG

-12 +12

DIS 1N914A ...

m ) • ' ..... t • I

Dl4 1N914A

'" R62 6.34K

•S R60 6.34K

R61 < 25 TURNS

SK ~5-.. •---------,

R63 16.9K

';:, + 020 1N753A

-12

RS9 330

...

R32 100K

"trYi , ..

R33 l(l()K

... -12 H2

... RSI 1MEG

-12 '12

TP6 1 l R35 R36 R37

,o l .::u I ;;; I :.:; ,.. 1% 11'

It--' C13 _ C14

C12 JOPF

, ..

, ..

-12

A~

+5

R56 1MEG

R55 1MEG

&"> R26 10K

'" R15 10K

C15 • C16 •

7: R39 ·-r-·7~ t1.8K C17 •

, .. R40 R41 11.BK 11.SK

,.. I , .. C18 •

10

-12 +12

C23 • •12

-12

RSO .t_ , .. 1MEG

+12

?

C21 1MF

5 .. R75 100

... > R3 3.9K

-12

I

TP7 R43 5.23K

, ..

R78 20K

... C20.

R44 6.34K

"'

10

R46 6.114K

...

R45 30.91(

...

WABCC ~

TP8

,10

-12 ... nr R47 R48 4990K 316

C39 -12 +12

4.7 .:+ R79 MFO 4990K

R42 10K

-12

-12

-07

I I :54111

G

G

Figure 5-13.

,,

-12

Receiver Demodulator Schematic Diagram

5926, p. 5-43/44

5-8 DATA REGENERATOR (N451054-8501 and -8502)


The printed circuit board layout (figure 5-21} is provided to aid the technician in locating component, test points and pins as noted in test and adjustment procedure and the schematic diagram (figure 5-22} is provided as a maintenance aid.



NOTE

When two values of voltage, frequency, etc. are listed, the initial value is to be used in testing the -8501 board and the value in parentheses is to be used in testing the -8502 board. All other values, pins, etc. listed are common to both boards. Ground connections are to be made to pin 18.

1. Connect +5V power supply output to pin 14 and adjust voltage for +5±0.2V.

2. Connect +12V power supply output to pin 16 and adjust voltage for +12±0.2V.

3. Attach a jumper from pin 11 to pin 12, and from pin E to pin 1.

4. Connect frequency counter to TP4.

5. Adjust capacitor C2 for frequency counter indication of 614,400 ± 2Hz (409,600 2Hz) or better. Measure the following frequencies at the associated test points. All should read within ± lHz.

TP7 and TP22 153,600 Hz (102,400 Hz)

TP8 and TP21 38,400 Hz (25, 600 Hz)

TP9 and TP20 9,600 Hz (6, 400 Hz)

Pin 13 and Pin 2 2,400 Hz (1,600 Hz}

TPlO and TP19 600 Hz (400 Hz}

5926, p. 5:-45

WABCD ~

6. Connect test equipment as shown in figure 5-14-.

7. Adjust function generator no. 1 to obtain a 16±0.1 Hz (11±0.1 Hz) square wave swinging between -0.6±0.1 ·and +5.0±0.2V at output 1.

8. Adjust function generator no. 2 (while set for continuous operation) to qbtain a 300±2 Hz· (200±2 Hz) square wave swinging between -0.6±0.l and +5.0±0.2 V at output 2.

9. Adjust function generator no. 2 to gate on the negative swing of function generator no. 1. The waveforms shown in figure 5-15 should be observed at outputs 1 and 2, respectively, with oscilloscope externally triggered on "oscilloscope trigger" shown in figure 5-14. Note the ten positive peaks in each group in the output 2 waveform.

10. '"Attach a jumper from pin C to pin 4, and from pin B to pin 3.

OUT 11----_....,__,

FUNCTION GENERATOR

N0.1

1000HM 5%, 1i2W

_ .... ____ _...., OUTPUT 1

1N914A

,------------+--.... -----------11..._ OSCILLOSCOPE TRIGGER

OUT _________ _,

FUNCTION GENERATOR

N0.2

1000HM 5%, 1/2W

_ .... ____ --1..._ OUTPUT 2

1N914A

GATE INPUT GND l---tt----------41~----..-.. GND

Figure 5-14. Data Regenerator Test Setup

5926,p.5-46

WABCD ~

11. Attach output 1 to pin B, and output 2 to pin c.

12. With dual trace oscilloscope, obser~e waveforms at pin Band TPlO simultaneously. The voltage at TPlO should be Oto 3V or greater as shown in figure 5-16. Note the gap in the· TPlO waveform· .corresponding to the negative transition of. the. p_ih B yolt;age •

. - ' - ,, _:

13. Observe waveforms at pin B a_nd 'TP19. sirittil:~.aneously. The results shoulc;i be the same as descriJ?~d in step 12.

:--:.~:,. 14. With a.dual trace oscilloscqpe/ observe-waveforms at

pin Band pin K simultaneously. The volta'.ge at pin K should be Oto 3V or greater as shown in figure 5-17. Note the time duration of the pin'.~ or pin H waveform.

15. Observe waveforms at pin Band pin H' simqltaneously. ·· , The results should be the same as descr~bed in step 14.

16. Observe waveforms at pin Kand pin M simti:ltaneously. The voltage at pin M should be Oto 3V or greater as shown in figure 5-18. Note the ten positive peaks in the pin Mor pin D waveform.

17. Observe waveforms at pin Hand pin D simultaneously. The results should be the same as described in step 16.

18. Adjust function generator no.2 to obtain a 350±2 Hz (250±2 Hz) gated square wave swinging between -0. 6 ± 0.1 and +5.0±0.2V at output 2. With oscilloscope still connected to trigger on "oscillosdope trigger", observe waveforms at pin c and TPlO simultaneously. The waveforms should be as shown_in figure 5-19.

19. Observe waveforms at pin C and TP19 simuitaneously. The results should be the same as described in step 18.

20. Attach a jumper from pins to ground, and. from pin U to ground.

21. Observe waveforms at pin c and TPlO simultaneously. The waveforms should be. as shown in figure 5-20. Note the lack of symmetry in the TPlO wayeform during the time a signal is present at pin C, in contrast to the results shown in Figure 5-19.

22. Observe waveforms at pin C and TP19 simultaneously. The results should be the same as described in step 21.

~9i6, .P·. 5-::-47

WAaca· ~

5926, p. 5"'l48

+5 VOLTS

OUTPUT 1

O VOLTS

+5 VOLTS

OUTPUT 2

O VOLTS

10MS/DIV.

-8501 BOARD

+5 VOLTS

OUTPUT 1

O VOLTS

+5 VOLTS

OUTPUT 2

OVOLTS

10 MS/DIV

-8502 BOARD

Figure 5-15. Typical Circuit Waveforms, Data Regenerator Test Setup

10 MS/DIV

-8501 BOARD

10 MS/DIV

-8502 BOARD

+5 VOLTS ";

OVOLT$

+3 VOLTS

O VOLTS

+5 VOLTS

PIN B

TP10 OR

TP19

PIN B

+3 VOLTS TP10 OR

TP19

OVOLTS

Figure 5-16. Typical Circuit Waveforms, Data Regenerator TPlO, Pin B

WAEICD ~

5926, p. 5-49

'WABCD -~

5926, p. 5.;.50

5 MS/DIV

-8501 BOARD

10 MS/DIV.

-8502 BOARD

+5 VOLTS

O VOLTS

+3 VOLTS

O VOLTS

PIN B

PINK OR

PIN H

+5 VOLTS

PIN B

O VOLTS

+3 VOLTS

OVOLTS

PINK OR

PIN H

Figure 5-17. Typical Circuit Waveforms, Data Regenerator Pins Band K

+3VOLTS

OVOLTS

+3 VOLTS

O VOLTS

5 MS/DIV

-8501BOARD

+3 VOLTS

O VOLTS

+3 VOLTS

.0 VOLTS

10 MS/DiV

-8502 BOARD

PINK OR

PIN H

PIN M OR

PIN D

PINK OR

PIN H

PIN M OR

PIN D

Figure 5-18. Typical Circuit Waveforms, Data Regenerator Pins Kand M

WABCD ·~

5 9 2 6 I f p • 5-51

WABi:a ~

5926, p. 5-52

5 MS/DIV

-8501 BOARD

10 MS/DIV

-8502 BOARD

+5 VOLTS.

PINC

OVOLTS

+3 VOLTS

O VOLTS

+5 VOLTS

O VOLTS

+3 VOLTS

O VOLTS

TP10 OR

TP19

PINC

TP10 OR

TP19

Figure 5-19. Typical Circuit Waveforms, Data Regenerator Pin C, TPlO, No. 1

WABCC ~

+5 VOLTS

PINC

OVOLTS

+3 VOLTS

O VOLTS

5 MS/DIV

-8501 BOARD

+5 VOLTS

O VOLTS

+3 VOLTS

O VOLTS

10 MS/DIV

-8502 BOARD

Figure 5-20~ Typical Circuit Waveforms, Data Regenerator Pin C, TPlO, No. 2

TP10 OR

TP19

PINC

TP10 OR

TP19

5926, p. 5-53

WABCD ~

r O R5 Tl

n Rnu 1u

lf:

c 8

c: Cll

DI

L!.

T7 0

ICI IC2

*-..r

< 'n\.. c II URl2

0 -

• 0

' L

UN451054-850 C14 --

18 0 ICJ 0

T9

•

... ~

0 IC16 U1

•

ICIO 0 it- IC4 15

w1=1eccl 'V':t&/'.

XTAL It-\--:----'\

I I

~---· _)

:J 'f :fE

•f'. fl

ICIJ

• ~+) Cl3 0 § T22 ....

EB_j ru;51054-85

J COMPONENT SIDE

V U T S R P N M L K J H D C B A (COMPONENT SIDE) 1817161514131211109 8 1654321 (FOILSIDE)

Figure 5-21. Data Regenerator Board Layout

5926, p •.. 5-54

PARTS LIST

DATA REGENERATOR N451054-85XX) (See Figure 5-21)

Cl C2

ITEM

C3, CS C4 c6, ca, c12 C7, C9 ClO, Cll Cl3 Dl, 02 03, 04 ICl j:o ICS,

IC7, ICll, IC13 TO ICl 7, IC19, IC23

IC6, IC18

IC8, IC12, IC20

IC9, IClO, IC21, IC22

Ql, Q2, Q3, Q4 Rl R2, R8 R3 R4 RS, R7 R6 R9, Rll, Rl2 RlO XTAL XTAL HOLDER

DESCRIPTION

CAPACITOR, 20 PF CAPACITOR, TRIMMER,

9-35 PF CAPACITOR, 0.047 UFD CAPACITOR, 1000 PF CAPACITOR, 4.7 UFO CAPACITOR, 0.001 UFD CAPACITOR, 100 PF CAPACITOR, 1.0 UFO DIODE, DI-52 DIODE, 2N914A INTEGRATED CIRCUIT,

MC3062P INTEGRATED CIRCUIT,

MC3062P

INTEGRATED CIRCUIT, 9601

INTEGRATED CIRCUIT, MC3026P

INTEGRATED CIRCUIT 9300

TRANSISTOR, EN3904 RESISTOR, 47K RESISTOR, lOK RESISTOR, 820 ohms RESISTOR, 8.2K RESISTOR, lK RESISTOR, 470 ohms RESISTOR, 20K RESISTOR, 2K CRYSTAL CRYSTAL HOLDER

PART NUMBER

J702823 J709145-0098

J709060 J702998 J706422 J706242 J706940 J706387 J723555 J726031 J715029-0051

J715029-0051

J715029-0059

,}715029-0058

J715029-0036

J731398-0033 J735035 J735053 J735246 J735058 J735031 J735141 J735054 J735048

* J713125

*These components change with board suffix as noted below.

PCB SUFFIX

-8501 -8502

FREQUENCY

614.4 KHZ 409.6 KHZ

PART NUMBER

J703272 J703278

5926, p. 5-55/56

PIN

•

"N c 0ATA1Nl1J

i"

10ICP -~

IQI

VlDO

.. o • I _1,

SQUELCH l1J

PIN

Mii

TP12

..

18

a 112

I

.. 1et ho

IC10 V3DO

CP

11

a.-.2

u • ' SYNC SELECTOR Ill

TP3

Cl 2lM'F

"' 47K

ll-3!5PF

C14 15Pf

R2 10K

..

R12 20K

XTAL

614.4KHz 1409.BKHrJ

•5

TP5

TP11

...

WABCD ~

TP13 oo--.---l.1

,-. ~ PINM OATAOUTIH

OB ) PINK KEYONtH ~" I

,--------.--------..-------...--------.--------~-------11>--------1,-....-------.-------...--------.... ~--+~I---C!OTN

..

~--7~

' 450 MCJ062 la - I - CP CP 13

.. 2J

3<

PIN 3

SQUELCH 121

SYNC SELECTOR 121

PIN s

•S

MR

IC22 ·=

•5

16 CP10

a'j11

0121 •

R11 20K

1 2 T - 8 T r a

CIO 100Pf

ii

TPIS

~ + ®rP4

•S TP18

IC13

so c,

------

TP7

TP14

TP22

"SD IC2 MCJ062 c,

13

• I a•1 c _____ =:J

tC12

MCJ026

• so IC14 MCJ062

10 50

13

TPB

TP21

' J

3. IC21

9300

TP9

•S

a

PIN F

1'1N 1200Hz 2 IIOOHJI

PIM DATAIN(2J •

111 i C!O TPIO

PIN 800Hz 1 t400Htl

%N~ • • I ' f > -~12% .1.:, .J:c,o

TO .. CP -10 1MR 121------.... ... 7I : • .1.• l I"'o I4.711fD

• so IC1!> 10- • si, MC,062 SD

1- 13 tp • CP -6 -a l= a a I ------~

TP20

Figure 5-22.

":" ":" + C13 1MFOI.

PiN>

~:.s,l <» .Ii 7'0 ,. 1 •12

~DI TP11

":" ":"

) •1 :') PINDOATAOUT121 ~·:> 1 t--... "'-'' c ·1 IJ ) rtNHKEYONl2J

":" GND.

---IC16 1050

MCJ062 , _ CP

PIN PIN

10 13 ,....., 1200H1

fUIOOHl) t800H1I

·-SD

NOTE· ITEMSINPARENTHESISAflE FOR -8502 IOARD

OH ALL JC'S

PtNNO 141$+5 PIN NO. 7 1$ GNO.

---1C17 ...-~

MClDl2

12 PIN .... , 11

1400HJI

Data Regenerator Schematic Diagram

5926, p. 5-57/58

6-1 GENERAL

SECTION VI PARTS LISTS

WABCD 'V"....,

This section provides parts lists and breakdowns for all modem cardfiles which may be used in the DCS-601 Digital Carrier System as listed in table 6-1. Refer to section V for parts lists and breakdowns of each printed circuit board.

As a specific system may not incorporate all modems listed, ignore those modems which do not apply to the system in question.

6-2 USING THE PARTS LISTS

The parts lists and breakdowns of this section are arranged into two parts; the six-board cardfile listing and the ten-board cardfile listing.

6-2.1 Six-Board Cardfile (Figure 6-1)

The bridging data, voiceband data, amplifier data and terminating data modems utilize the six-board cardfile. When using the six-board cardfile parts list, refer to the item in question and note the WABCO part number. If the item varies, depending on modem, refer to the sub-listing for the part number applicable to the item for the modem in question.

6-2.2 Ten-Board Cardfile (Figure 6-2)

The regenerative data repeater modem utilizes the tenboard cardfile as listed.

TABLE 6-1. DCS-601 MODEMS

Modem Part No.

Bridging Data Modem Voiceband Data Modem Amplifier Data Repeater .Modem Terminating Data Modem. Regenerative Data Repeater Modem

N451082-0501 N451082-0502 N451082-0503 N451082-0504 N451082-0601

5926, 6-1

(.}l

I.O N O'I ..

t-0 . O'I I

N t

11-1/4 11

"B"~ 10 10 20,29,30 7,8,31 6 LI.

27 "C"

f&f:U~U2~il : [fl 28 \ 27 I I 1~" .. ! !~1f"!l---·-I- - -- -- A I 3 /,......,\J / 0 .,,9

0 0

0 00 000 00000

- ____________________ -..L"'. ___ ·· _____ '. ___ .

25

0

26 23 17

I :JiJ

I I

0

0

00 0

0

0 "A"

0

\ 13 14 11 12

10 SEC. "A-A"

31 OR 44* 32 "33

43*

42*? I~ _34 · 35 41*.......... 36

SEC. "B-B" *WHEN REQUIRED

39 19

~ 38-........:; 0 37

SEC."C-C"

I. '0~~~·.. • I

Figure 6-1. Six-Board Cardfile Parts Location Diagram

~I

Item

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 i

*

**

WABCD "v.'4,/'

TABLE 6-2. SIX-BOARD CARD FILE N451082-05XX

Description J Part Number I

STRIP, TERMINAL J725710-0007 PANEL, TERMINAL BOARD M431083-3302 BRACKET M451083-3303 SCREW, 6 x 5/16 PANS TP J507193 WASHER, 6 INT LK TP J47713 LABEL, TERMINAL BOARD See Table 6-2A WASHER, 6 LK S TP J47662 NUT, 6-32 HEX. S TP J48148 CAPACITOR, 4.7 UFD* J706422 RIVET, 3/32 POP J490037-0004 CHASSIS R451083-3001 SCREW, 6-32 x 1/4 BIND. STP J507018 PLATE, NAME See Table 6-2A COVER, FRONT M451083-3601 CONNECTOR, 36-WAY J706740 LABEL, PCB LOCATION See Table 6-2A SWITCH J725654 CONNECTOR, RECEPTACLE J709146-0036 NUT, 4-40 HEX. S TP J480006 WASHER, 4 LK S TP J47765 SCREW I 4 x 5/16 BIND. s TP J50996 PANEL M451083-3304 SCREW, 6 x 1/4 ( z) RD s TP J52655 PLATE, NAME M451108-7601 PLATE, NAME M451108-5201 GUIDE, CARD J712067 GROMMET J75497 PANEL, CONNECTOR M451083-3301 SCREW, 4 x 1/2 PAN TAPTITE J507306 WASHER, 4 PL S TP J47640 SCREW, 6 x 5/8 BIND. S TP J507023 RELAY J723009 SPRING, BAIL J680170 BASE, RELAY J725303 SPRING, RETAINING J723849 DIODE, DI52 J723555 INSULATION M451171-0801 PROTECTOR, SURGE** J725718 HOLDER, PROTECTOR J718260 SCREW, 4-40 x 1 FIL s TP J052214 INSERT, 6-32 J792261 SPACER M210936 BOARD, RESISTOR (PAD) See Table 6-2A S-CREW, 6 x 1 BIND. S TP J507010

-0501 & -0504 Card Files equipped with one capacitor. -0502 & -050~ Card Files equipped with two capacitors. -0501 & -0504 Card Files equipped with three surge protectors.

-0502 & -0503 Card Files equipped with six surge protectors.

5926, 6-3

WABCD ~

TABLE 6-2A. SIX-BOARD CARD FILE N451082-0501 TO -0504

PCB File Resistor Terminal Location

Suffix Board Board Label Name Plate Label

-0501 - M451139-1401 M451108-6501 M451139-1701 -0502 M451055-2701, M451139-1404 M451108-6601 M451139-1702

(QTY-2} -0503 M451055-2701, M451139-1405 M451108-6701 M451139-1703

(QTY-2) -0504 M451055-2701, M451139-1406 M451108-680l M451139-1701

(QTY-1)

5926, p. 6-4


WABCD '-/'"A,,,~

5926, p. 6-5

Ul \,0 tv

°' .. I'd . °' I

°' 4

5

2

1

1

21,22,23,24

"rf'~ ~ ~ >r ---· - ... -

~ "' .... ~uw _- _ .. - L> v

I_.,.....

0

\~ "' 0 11', ,1 ' 1: ' h "tj t,:.io,.JJ

i-- - - - - _,_,,,., ..................... .,,..=t"'

"A"

" i tf lttnJ 3 4

\j I

5 I I I I

v ~- 6 __.,,. I

~ -f i: /__ ._ . LJ ;,,,,-=:=.-=.. - - .

13 15,16,17 18

8 ~

7

44 ~ ~ ~ ~/~ ~ ~ ~ I 18·1/4" I

J--------------19· 1/16" I

1

11-1/8 II

19

45

I 37

4,'t qfµ rgi·1~-2 lr1 / ~ . ! 26

SEC. "A-A" 3,29,31,32 25

Figure 6-2. Ten-Board Cardfile Parts Location Diagram

~i

WAEIICCI ~

TABLE 6-3. TEN-BOARD CARD FILE N451082-0601

Item Description

1 LABEL, TERMINAL BOARD 2 STRIP, TERMINAL 3 SCREW, 6-32 x 1/2 PAN SST 4 BOARD, RESISTOR (PAD) 5 SPACER 6 LABEL, PCB LOCATION 7 PLATE, NAME 8 FRAME 9 SCREW, 6 x 1/4 BIND. S TP

10 PLATE, NAME 11 COVER 12 GUIDE, CARD 13 SCREW, 6 x 1/4 (Z) RDS TP 14 SUPPORT 15 NUT, 4-40 HEX. S TP 16 WASHER, 4 LK S TP 17 SCREW, 4 x 5/16 BIND. S TP 18 CONNECTOR, RECEPTACLE 19 RIVET, 1/8 POP 20 GROMMET 21 BASE, RELAY 22 SPRING, RETAINING 23 RELAY 24 SPRING, BAIL 25 LABEL, TERMINAL BOARD 26 STRIP, TERMINAL 27 BRACKET 28 LABEL, TERMINAL BOARD 29 NUT, 6-32 HEX. SST 30 WASHER, 6 LK S TP 31 WASHER 32 RIVET 33 SCREW, 4-40 x 1 FILS TP 34 HOLDER, PROTECTOR 35 PROTECTOR, SURGE 36 PANEL, BACK 37 CONNECTOR, 36-PIN 38 SCREW, 4 x 1/2 PAN TAPTITE 39 WASHER, 4 PL S TP 40 SCREW, 8-32 x 3/8 PAN SST 41 BRACKET 42 DIODE, DI52 43 SWITCH 44 PANEL, SWITCH MOUNTING 45 INSULATION, SURGE PROTECTOR MOUNT

Part Number

M451139-1403 J725710-0009 J507301-0108 M451055-2701 M210936 M451139-1704 M451108-5201 R451083-1403 J507018 M451108-7301 M451083-3701 J712067 J52655 M451083-350l J480006 J47765 J50996 J709146-0036 J490024 J751175 J725303 J723849 J723909 J680170 M451139-1402 J725710-0008 M451083-3503 M451139-1407 J480211-0103 J47662 M271657 J490045-0002 J052214 J718260 J725718 N451083-3401 J706740 J507306 J47640 J507295-0106 M451083-3502 J723555 J725654 M451083-3504 M451171-0801

5926, p. 6-7/8

ADDENDUM 1 SERVICE MANUAL 5926

DCS-601

DIGITAL CARRIER SYSTEM

OPERATION AND MAINTENANCE

This addendum is furnished to update all Service Manuals 5926 dated April, 1979.

Remove and discard pages 5-27 and 5-28 from the existing manual and replace them with the attached revised pages.

November, 1980 A-80-400-1944-ADl UNION SWITCH & SIGNAL DIVISION

AMERICAN STANDARD INC. Swissvale, PA 15218

~

WABCCI ~

TABLE 5-1. RECEIVER FILTER CHARACTERISTICS

FREQ. (± 15 Hz) BOARD NO. UPPER LOWER

-8301 13,700 12,500 -8302 16,000 14,800 -8303 26,600 25,400 -8304 28,900 27,700 -8306 5,500 4,300 -8307 9,100 7,900 -8308 11,400 10,200 -8309 19,700 18,500 -8310 22,000 20,800 -8311 24,300 23,100 -8312 5,200 4,600 -8313 6,500 5,900 -8314 8,600 8,000 -8315 9,900 9,300 -8316 11,200 10,600 -8317 12,500 11,900 -8318 13,800 13,200 -8319 15,100 14,500 -8320 16,400 15,800 -8321 18,500 17,900 -8322 19,800 19,200 -8323 21,100 20,500 -8324 22,400 21,800 -8325 23,700 23,100 -8326 25,000 24,400 -8327 26,300 25,700 -8328 27,600 27,000 -8329 28,900 .28,300 -8330 10,700 8,300 -8331 14,800 12,400 -8332 21,600 19,200 -8333 25,800 23,400 -8334 30,000 25,600

VOLTAGE (± O. 2 VOLTS RM~) at LOWER FREQ.

PIN 17 PIN 13

2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7 2.5 4.7

.UPPER FREQ. PIN 17 PIN 13

4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.7

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5

Addendum 1 5926, p. 5-27

WABCO ~

I HZ EB T_PJ. .TP2 1,.10 EB WABCO I ~----- UN451054-830 'V"+~

L J

V U T S R P N M L K J H F E D C B A (COMPONENT SIDE)

181716151413121110 9 8 7 6 5 4 3 2 1 (FOILSIDE)

Figure 5-7. Receiver Filter Board Layout

5926, p. 5-28

August, 1984 A-8/84-300-1944-AD2

PRINTED iN USA

SERVICE MANUAL 5926 Addendum 2

Tnis addendum is fur-n:i.shed to update all Sei-•vice Hauals 5926 da'ved April, 1979.

Remove existin3 pages 5-37/5-38, 5-39/5-40 and 5-43/5-44.

Replace with the attached revised pages 5-37/5-38, 5-39/5-40 and 5-43/5-44.

UNION SWITCH & SIGNAL DIVISION AMERICAN STANDARD INC./ SWISSVALE, PA 15218

UNION SWffCH & SIGNAL i\lJ

Jumper pins 16 & 17. Remove 7. 2f ... 5V P-P waveform TP6 generator lead from pin 4 as per Fig. 1 and connect to pin 17. Adjust generator #1, 2K±l00HZ, 8±.2V P-P sinewave.

Connect a true RMS voltmeter to TP6, common to pin 18. Adjust generator #1, 2K±l00HZ, sinewave,

@ TP6. amplitude 2.6 VRMS

Change voltmeter hot lead from -8701, 500±30HZ TP6 to TP7. Starting at 100 Hz -8702, 1000±50HZ increase generator frequency -8703, 2000±90HZ until voltmeter indicates 1. 7± .15 VRMS (Filter-3DB.Point)

Connect a jumper from pin 16 -2.65±.4DC to pin 18. (Do not disconnect -.1 to -1. 8V DC generator #1.) • 3.±. 3V DC

Greater than + 2.6V

Connect generator #1 to pin 4, 0±.lV DC and common to pin 18. Adjust generator #1, 4K±20HZ, 2±. 5V P-P sinewave.

Disconnect jumper from pin 16 to 18. Connect pins 16 and 17 to generator #2.

-8701,300±10HZ 2.5±5V P-P sine wave. 4.2±.2V P-P

-8702,600±20HZ -8703,1200±40HZ

Adjust R61 50-50±5%

TABLE 1-2

TABULATION Cl3, Cl4 Board BIT RATE FC. HZ Cl5, Cl6 NO. - - C~3 MF

8701 600 500 -- -- .1 MFD .054

8702 1200 1000 -- -- .056MFD .027

8703 2400 2000 -- -- .022MFD • 0135

For additional test criteria, see Spec. EU-5860

~ Seal R81 & R84 with RTV (UJo41701)

after final adjustment-per view "A".

Cl7 MF

.0135

.00675

.00337

I

TP7

TP8 TP4 Pin 11

DC Pin 8

TP5

TP5

TP9

Cl8 Cl9, C20 MF MF

.027 .054

.0135 .027

.00675 • 0138

RTV(UF041701)

VIEW "A"

5926, p. 5-37

UJ UNION SWITCH & SIGNAL

n R46

L .. _ C20

L R43

C19L ,-, LJ

TPB Q • IC8

R45 [ =} [ ~ n1

R38 n Cl&

f 1 R78 LJl _ C391 + I LJ TP7

II Q CH c-.-

- C18 1

=

Ir L L :;

._ IC7 R3 7 -C14

TPso~n n R35 [ :=) a,: LJ LJ C~

3

R33 [ :JC12 I (:._ ~ - ) C35

C361 ~

IC& I I •1...

R34 C .:J

R31 L =:J c :J

R32

TP9 . ,,.. ISS-8

-:- - r:. I ~l J LJL2 02 u+ C25 EI)

8 8 Drawing F451054 Sh. 87, Rev. 22

Figure 5-12. Receiver Demodulator Board Layout

* • • • • i~ • •

IC 3, 4 & 12

(TOP VIEW)

5926, p. 5-38 (Rev. 8/84)

UNION SWITCH & SIGNAL 0,1 PARTS LIST

RECEIVER DEMODULATOR N451054-87XX (See Figure 5-12)

ITEM

Cl c2, ca C3 C7 C9 ClO Cll Cl2, C22 ·c13 to c20 C21 C23 C24, C25, C26,

C39, C27, C28, C35 to C38

Dl, D2 D4, DS D8 to Dll, Dl3,

014, Dl5, Dl7, Dl8

Dl2 D20 D21 022, 023 I Cl

IC2

IC3, IC4, IC12

res

IC6

IC7 to IClO

ICll

Ll,· L2 Ql, Q7

DESCRIPTION

CAPACITOR, 100 PF CAPACITOR, 3 PF CAPACITOR, .1 UFD CAPACITOR, 0.47 UFD CAPACITOR, 5 PF CAPACITOR, 0.33 UFD CAPACITOR, 510 PF CAPACITOR, 30 PF CAPACITOR CAPACITOR, 1 UFD CAPACITOR CAPACITOR, 4.7 UFD

CAPACITOR, 0.001 UFD

DIODE, IN4003 DIODE, IN746 DIODE, IN914A

DIODE, IN5226B DIODE, IN753A DIODE, IN751A DIODE, IN5232B INTEGRATED CIRCUIT,


309C SINK, HEAT

-PAD, TRANSISTOR MOUNTING

INTEGRATED CIRCUIT, 777CH

INTEGRATED CIRCUIT, MC846P

INTEGRATED CIRCUIT, 709C



CHOKE TRANSISTOR, MPS404A

PART NUMBER

J702636 J706929 J706827 J709055 J706931 J709056 J709144-0040 J702815

* J706120

* J706422

J706242

J723555 J726081 J726031

J726150-0061 J723914 J723747 J726150-0043 J751029-0046

J715029-0062

J792254 J792072

J715029-0061

J715001

J751029-0037

J715026

J715029-0057

J709161 J731398-0028

*These components change with board suffix. Refer to the following tabulation for part numbers.

(Rev. 8/84) 5926, p. 5-39

UJ UNION SWITCH & SIGNAL

PARTS LIST

RECEIVER DEMODULATOR N451054-87XX (CONT.)

ITEM DESCRIPTION PART NUMBER

Q2, Q3 TRANSISTOR, 2NS460 J731398-0038 Q4 TRANSISTOR, EN3906 J731398-0034 QS, Q8 TRANSISTOR, EN3904 J731398-0033 Q6 TRANSISTOR, 2N3921 J731398-0083 Rl, RS9 RESISTOR, 330 ohms J735060 R2 POTENTIOMETER, J602695

500 ohms R3 RESISTOR, 3.9K J735066 R9, R34 RESISTOR, 1.SK J735063 RlO, R75 RESISTOR, 100 ohms J721194 Rll RESISTOR, 33K J735037 RlS, R42 RESISTOR, lOK J723793 Rl6, Rl.9 RESISTOR, 1.58K J735519-0112 R81, R84 POTENTIOMETER, 1 Meg J620850-0041 R20 RESISTOR, 680 ohms J735047 R21, R22 RESISTOR, 5.62K J735089 R23, R24 RESISTOR, 1. 4 megohms J735519-0l68 R25, R26 RESISTOR, 2K J735048 R27 RESISTOR, 20K J735054 R28, R29 RESISTOR, lOK J735053 R31, R32, R33 RESISTOR, lOOK J735165 R35, R37 RESISTOR, S.9K J735087 R36, R39, R40, RESISTOR, ll.8K J735519-0131

R41 R38 RESISTOR, 1. 47K J735519-0129 R43 RESISTOR, 5.23K J735519-0130 R44, R60, R62 RESISTOR, 6.34K J735084 R45 RESISTOR, 30.9K J735319 R46 RESISTOR, 6.04K J735086 R47, R79 RESISTOR, 4.99K J735092 R48 RESISTOR, 316 ohms J735519-0128 R49, R64, R30 • RESISTOR, lK J735031 RSO, R51, RSS, RESISTOR, 1 megohm J735519-0108

R56 R52, RS3,Rl 7, Rl8 RESISTOR, 22.lK J735338 R58 RESISTOR, 51 ohms J735407 R61 POTENTIOMETER, SK J620761 R63 RESISTOR, 16.9K J735076 R76, R77 RESISTOR, 4.7K J735034 R78 RESISTOR, 20K J723794 R80, R82, R83, RESISTOR, l megohm J735300 R85

~These components change with board suffix. Refer to the following tabulation for part numbers.

-

5926, p. 5-40 (Rev. 8/84)

DS IN741

D4 IN741

111sz~/11

l"IN 4 1"0

-12 +12

C27 .0011,

C"3 -ll"IF'D.

~-----11--

Tl'IO ~

8Rt:ltN

TPI

"' YELLOW

= 1>1523211

+s

R26

' PIN 15,$ PtNll,l'lf.!.!!....!.4 SQL. PINl41R.DATA DATA

SQL.

Rl7 ·~

(Rev. 8/84)

TPI

PIN 1.,H

JCS MC8461'

PIN 12,N

R 17 I" Z2.1 K

-12 +12

Dl7 1Ntl4A

PIN 11-.T

DII IN914A

PIN 17-,U

5" R20 680

013 IN914A

E

R33 JOOK

I -12 +12

+s '" TP12 R23

.... M[.

TP3) 6 ..... '7l • • I

TP6

'" R24 I~ 4MEG

TPt3

A cu A CIT.

,,.l.i:47K

R39 ' ct1& I I .SK

~t!aK R40 I I .8K

TP7

10

-12 +lz

R43 S.23K

R7t 20K

I

C?.O A

R44

R45 30.9K

6 .. 34K

R ..

~ -

re• HI

+ :!~r. 4.MGIC. R48 316

'" Rf5

c~i 6 '101<

4.7 I+ -·· c hlfJ>.'F -I 2 +f2

l 0-11.

en .D:,.

R42 014 It\ J1MEG 1 1 / -r 1 1 • "' ~ 10K IN914A

'" Rl2 lii·34K

+$

RII SK

RU 11, IK

C37

.001 +

R60 <o-34K

+12

D20 tN753A

5"

-12

RH St

RSI 330

TP5

10.

'" RSI IMEG

CZI 30l"F

-12 +12

-12 +12

6 i JUMPER

... ,~ . .

'"

+$

~"

RSI IMEII

R55 IMEG

RU IOK.

R77 •• 71(

-12 01

RSO I." tMEG L .. IMF

• +12

-12

-· 2

l-

,..__,

-12

WS40.CA Q7

TP4

I I

I TPt

R49 IK M

5"

HEAT SINK

UNION SWITCH & SIGNAL tt::J

+t

CH 4.7MF

TPJI

'(eRo~

PIN t,.'A

O ~ l O PIN ,a,v .

LZ

02 I' IN I ,A IN40Q3 ' ' --·---,----0 -12

C25 4.7W

Drawing F451054 Sh. 87A, Rev. 13

Figure 5-13. Receiver Demodulator Schematic

5926, Diagram P· 5-43/5-44

addendum · dcs-601 ~ee attached. digital ......typical dsc-601 digital·carrier system installation...

Documents