national radio astronomy observatory · the 45-ft telescope position control and monitor facilities...

NATIONAL RADIO ASTRONOMY OBSERVATORY

GREEN BANK) WEST VIRGINIA

ELECTRONICS DIVISION INTERNAL REPORT No. 149

NRAO 45-FOOT TELESCOPE

DIGITAL POSITION CONTROL AND READOUT SYSTEM

J. RAY HALLMAN

NOVERMBER 1974

NUMBER OF COPIES: 150

NRAO 45-FOOT TELESCOPE DIGITAL POSITION CONTROL AND READOUT SYSTEM

J. Ray Hallman

The digital position control and readout (DPCAR) electronic system provides

the 45-ft telescope position control and monitor facilities used to accurately

point the telescope. The basic system contains the stand-alone calculator con-

trol circuit cards 24, 25, and 26 (described in EDIR #128), the inductosyn posi-

tion readout system cards 27 and 28 (contributed by Ron Weimer), and the digital

position servo control cards 29, 30, 31, and 32. Also described in this EDIR is

a test fixture (useful in testing the telescope response) and the analog control

panel circuits that were added to permit monitoring of the telescope drive motor

currents.

A picture of the DPCAR front panel is presented below.

In the pix, coarse and fine indicators display the actual 11 and 12 bits

respectively of the inductosyn converter logic outputs when the cross-over con-

trol is in position "0". The "crossover"control provides an electronic means

of adjusting the offset between the "fine" and "coarse" (1 speed and 256 speed)

resolvers. The crossover control adds the displayed value to the most significant

octal digit of the "fine" outputs. The "composite" position displays indicate

the octal value of the position readout after logical combination of the "fine"

and "coarse" values and after a digital offset calibration value is added to the

position values. The "offset cal" enables electronically the azimuth and eleva-

tion position readout inductosyns to be zeroed without the necessity of adjusting,

mechanically, the resolvers. The yellow "initialize position readout" push-

button resets the inductosyn converter counting system. This is done automatically

whenever a computer update error occurs via the digital data link system. The

button lights during a reset sequence.

The position servo loop status indicators display the mode of the digital

servo control circuits which may be either + full scale, - full scale, or linear

(D/A) mode. Normal operation is "linear" but during observing source changes,

usually the mode changes to full scale during slew. This digital control is

connected via DAC's to the analog servo control system described in EDIR #127.

A picture of the "stand alone" computer control is shown on the next page.

,1°10 fTAL CLOCK

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Also, in the pix at the bottom, is the rotary inductosyn package employed in

the telescope position monitor system.

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The DPCAR logic circuits are assembled in the top-most 7-inch rack-mounted

drawer, a picture of which is presented showing the "insides".

The "box" rolls out on slides when careful attention is given to the rear

cables. The meters provide monitoring facilities of the 15 V DC and +5 V DC

power supplies.

45 FOOT TELESCOPE DIGITAL CONTROL SYSTEM

LSTDISPLAY

HP 9810-ACALCULATOR

STAND ALONECONTROL

PANEL1--110 POSITION

READOUTS

FD DP -- 116COMPUTER

TELESCOPECONTROL

PANEL

LSTC LOCK

OTHER DATA RECEIVERCONTROLS BINDICATORS rSITE DATA, ETC.

e-,TELESCOPEAXIS

LINK 45 FOOT

LINK UP LINK TERMINAL POSITION DRIVESERVO SYSTEM

TERMINAL ATBI - PHASE

AT 5K BIT/SEC 45 FOOTFRONT END BOX

CONTROL DATA RATE TELESCOPE RECEIVERCONTROLS

BUILDINGDOWN LINK

REMOTESITE

FOCUS/ POLARIZATIONDRIVER

CONTROLLER

TELESCOPECONTROLPANEL

( DL 45')( D L C B )

A block diagram showing the basic functions of the 45-ft control system

interconnected with the DPCAR is presented.

OTHER DATASITE DATA

The link terminals are described in EDIR #150.

A picture of the DPCAR card file is presented showing the electronic card

complement and locations.

There are 26 slots of which 18 are used. There is some redundancy result-

ing in only 9 different logic cards required for spares. Note the digital dis-

play wiring in the pix. The displays are connected using a multiplexing scheme

resulting in great saving of cabling and wiring.

(C)

El

(F)

7

45-FT DIGITAL POSITION CONTROL AND READOUT (DPCAR)

CARD SLOT ASSIGNMENTS

Slot

1 Spare

2 DPCAR

3 DPCAR

4 Not usable

5 DPCAR

6 Spare

7 DPCAR

8 DPCAR

9 Not usable

10 DPCAR

11 Spare

12 DPCAR

13 Spare

14 DPCAR

15 DPCAR

16 DPCAR

17 DPCAR

18 Spare

19 DPCAR

20 DPCAR

21 DPCAR

22 DPCAR

23 Spare

24 DPCAR

25 DPCAR

26 DPCAR

Resolver to digital converter (digital) Card 27

Sync det/error amp/VCO (analog) Card 28



Sync det/error amp/VCO (analog) Card 28


System timing generator/Az MSB synth Card 29

Coarse/ fine resolver displays/crossover Card 30

Digital offset cal/output reg buffer Card 31


Composit display/servo error control Card 32

Coarse/fine resolver displays/crossover Card 30



Composit display/servo error control Card 32

Stand alone position readout input Card 24

Stand alone position command output Card 25

Stand alone position command output Card 26

Calc

8

Description of Circuits

Cards #24, 25, and 26: EDIR #128 describes these circuits.

Card #27: The schematic showing the inductosyn converter digital logic is

presented below.

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45' POSITION READOUT , RESOLVER TO DIGITAL CONVERVTER CARD No. 27DIGITAL COUNTER/DRIVER CIRCUITS

The converter system crystal time base is in the upper left corner. The

reference counter string which drives the synchronous detector (card 28) is

along the top.

The synchronizing (reset) logic is in the middle left side of the drawing.

The VCO input logic is in the lower left which drives the sin and cos generator

counters in the middle and lower middle of the schematic. The counters control

the sin and cos inductosyn winding drivers in the lower right corner. Calibra-

tion circuits comprising two balance pots are mounted in the chassis behind the

card sockets. The binary output is generated by the up/down counters in the

middle right side of the schematic which count incrementally and synchronously

with the sin and cos counters.

Position resolution is adjusted by changing the straps on a programmable

plug located in slot "C" on the digital card #27.

The basic principle of operation is as follows: Proportional sin and cos

signals are generated by the digital counting logic of card #27 which drive the

rotary inductosyn in a reverse (non-conventional) direction. A single output

from the inductosyn rotor is filtered, amplified, synchronously detected, fil-

tered, and amplified providing error magnitude and direction signals which con-

trol the above-mentioned digital counting logic, resulting in a negative feed-

back loop circuit. A VCO with it's "dead zone" thresholds operates from the

magnitude signal to "speed up" the converter counting logic during position

slewing. Also, an up/down counter operates incrementally from these error sig-

nals via control logic providing the 12-bit position output data for "outside

world" utilization circuits.

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- 10 -

Card 28: The principles of the analog card #28 are discussed under card

#27. The schematic shows the input port (upper left) for the inductosyn rotor

signal. The transformer provides common mode noise rejection. Along the top,

45' POSITION READOUT, RESOLVER TO DIGITAL COMPUTER CARD No.28ANALOG CIRCUITS/ SYNC. DET. / ERROR AMP. /VCO

the filter and amplifier string drive the synchronous detector (upper right)

which is filtered (lower left) and sliced, providing the up/down output pin 7

(middle drawing). The VCO threshold and amplifier circuits (lower middle) and

VCO (lower right) provide a frequency output aiding in converting a rapidly

changing position input to the inductosyn.

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A complete position readout conversion system for one axis requires two

digital logic cards #27 and one analog card #28.

Card 29: The DPCAR system timing generator and "extra" logic card #29 is

drawn below.

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–n– ms( ONE CARD BOTH AXIS TAKE UP TWO CARD SLOTS I

DIGITAL POSITION COMMAND & CONTROL

SYSTEM TIMING GENERATOR /AZIMUTH MSB SYNTHESIZER CARD NO. 29 — SLOT NO.12

The system time base (upper left corner) drives the timing generator string

(top) which provides the display clock (pin H) to the front panel mounted digital

displays. Also the "assured" readout system strobe logic (upper middle of drawing)

- 12-

is synchronized to the data link which is synchronized to the control building

sidereal clock. Pin 6 is the link sink input to the assured strobe which operates

at 10 Hz with output at pin J. Also an interrupt signal to the "stand alone"

calculator signals it when position data is valid. Pin L strobes the position

readout data register located on card #31.

The telescope azimuth axis travels through a position range greater than

3600 of travel and therefore requires an indicator bit to signal when the tele-

scope has passed 3600 of travel. The bit is "synthesized" synchronously with the

position encoder 1800 bit by means of two micro rocker switches mounted on the

telescope pedestal. The logic associated with the 3600 bit is in the left middle

of the drawing with the output at pin N.

A divider chain providing a reset (initialize signal to the inductosyn sys-

tem) every 10 minutes is in the lower middle of the drawing with an output at

pin "R-7", which is "ORed" with the local yellow "initialize" switch on the

front panel with signal input at pin 16.

The logic in the lower middle of the schematic receives the "computer up-

date error signal" from the data link and updates the position readout via the

"one shots" and driver circuits in the lower digit of the drawing.

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— 13 —

Card 30: The electronics in card 30 provide automatic crossover correction

for the "coarse" and "fine" functions of the two speed position readout system,

thus providing a singlecompositemontonic position output. As shown in schematic

#30, the crossover logic comprises binary adders at the top of the drawing which

add the three most signficant bits of the "fine" data to the "coarse" position data.

69

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COARSE/ FINE DISPLAYS 81 CROSSOVER CONTROL CARD NC. 30

- 14 -

The adder chip "FF" subtracts the two least significant bits of "coarse" data

from the two most significant bits of "fine" data. The net result is that any

variation due to relative error between the coarse and fine speed resolver is

cancelled. Adder chip "Jr calibrates the crossover circuits to the most opti-

mum range of operation by adding an offset (selected by the crossover adjust

switch) to the "fine" position data which zero's the "fine" resolver to the

"coarse" resolver.

The circuits in the lower right corner of the drawing provide multiplexed

character serial data to the "coarse" and "fine" digital displays on the front

panel.

- 15-

TABLE I

CROSSOVER VALUES TO ADD TO C TO FORCE = TO F = 200 CTS COMPOSITE

0.5 = 1000 CTS fine or (2 CTS) coarse on the respective display.(No odd CTS on coarse.)

Optimum RangeChosen

-0.5 +0.5C9C10-F1F2ERROR 4.F1F2 = C9C10JPIFF+3+2+10

-1-2-3

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■•■•

1 Period of FineEquivalent

8000 CTS Fine (octal)1000 CTS Composite (octal)10) Coarse

8

(Relative)Counts DFN

Fine Coarse Display F 1 = C 9 4000 - 10 Fine = Fine + CrossoverF2 = C10 2000 - 4 1 Crossover CT =F3 = C 11 1000 - 2 1000 CTS of Fine

= 200 CTS of CompositeCoarse = Coarse

rpmposite = Coarse ±,(Fine + Crossover - Coarse)+ Coarse.]

VALUES BELOW AND TO RIGHT OF DOTTED LINE ARE REDUNDANT.

To adjust the crossover control, move telescope untilcoarse readout is changing from XX76-AXX00 and adjustcrossover control for the nearest fine indication of2400. The crossover control causes an increment of1000 counts of fine for each increment of the cross-over switch. Adjustment of the crossover may alterthe digital offset cal of the encoders. This shouldbe rechecked.

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- 16 -

Card 31: The position readout electronic zeroing circuits and register

circuits are shown in schematic #31.

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Two cards are required for each axis which provide calibrated position

data. The "digital offset cal" thumbwheel value is added to the uncalibrated

composite readout data from card #30 by adders KK, LL, and MM and latched into

registers EE and FF for utilization by the digital servo nulling circuits of

card #32.

- 17 -

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- 18 -

Card 32: Card 32 is a digital subtractor circuit which provides high gain,

thus limiting the output providing a linear output via a D/A converter (DAC 12

QZ) over a narrow range of difference between the position command and position

readout inputs.

Also, circuits on the card (bottom of drawing) provide multiplexed octal

data to the composite displays on the front panel. The circuit at the middle

right controls the servo status indicators.

The Power Control Circuit: The power supplies used in this project are

the switching regulator type which employ a full wave rectifier bridge directly

across the primary power line. The bridge feeds a large capacitor such that

under certain conditions when the power switch is turned on the contacts stick

(weld), thus rendering the power switch ineffective. The power control circuit

eliminates the problem since the triac is able to withstand the "inrush" current.

POWER CONTROL CIRCUIT

RANGE P.C. SWEEP LENCHTSTART RESET 2. e 2 2 2.'

0 0 0 000

OSC SYNCINT0 0

ESC EXT OSCINPUT

— 19 —

A schematic of a test fixture which generates digital position command func-

tions for testing the servo is shown. The test set is connected to J-2 on the

DPCAR via one of the short Elco cables used in the system.

(FRONT) (COMPONENT SIDE)TOP OF CARD

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IKV 4-mx-■C

9601BB

Q 16

00IJJ

[ 1.812 0 22

20 GND• • 11.47 -.+

_—

100/24,-11,—

5j

J -2 ALL

ji 2 s)START

RED P.B.

'

L

I 1 J-2] KKEL] j_3

RESETBLACK P. B.

8 TOGGLE RET.

OSC ENABLE20Hz 26!

4 20t INT

SYNCo oosc 2'

19 18 17 21 22

1 28 I RESET I START\ o5 H

HBLK RED

2.22

A-1INTERFACE ELCO CONNECTOR ON BACK OF CHASSIS

45 1 POSITION SERVO/READOUT TEST FIXTURE

FOR AZIMUTH AXIS

10 K

POLYCARBONATE111p.F

3.2KNV,

+15

8

160 AMP = F, S. = iovDG-200

TOPVIEW

SWITCH CLOSEDWHEN CONTROLINPUT IS LOW+15

04

10K

4DG- 200

--°<°

+15 JIO20K-558

+15

10 K Ar----

04+5

-v

-15 =1 0 K

10 K 10K

+15

4

5585

+®

10K

10K +15

1058

Is 20K-v9

404

+5

IK

CURRENT , 20K 2

MONITOR (4- K

IINPUT 20AMP# 1 - 1 2

3

AMP# 2

[1-- X

AMP# 3 20K 32

10K

AMP#- 4

TACH J+ V INPUT

SIGNAL -I 18 1

+OUT = CW/ DOWN-OUT = CCW/ UP

{

-SELECTED RATE ORDRIVE CURRENT TOREMOTE CONTROLPANEL VIA DIGITALDATA LINK

SELECT BIT FROM▪ RE MOTE CONTROL

PANEL VIA- DIGITAL DATA LINK

TACH SELECTEDWHEN LOW

SELECTED RATE ORDRIVE CURRENT TOLOCAL CONTROLPANEL INDICATOR

SELECT BIT FROM▪ LOCAL CONTROL

PANEL SELECT SWITCH- TACH SELECTED

WHEN CLOSED

3.2K

+152 0 K

8

+15

110

SELECTED RATE OR11 74047 DRIVE CURRENT TOL I+

DO- 2000/(0 lio REMOTE CONTROL

PANEL VIA DIGITAL4

2 DATA LINK

404 -516 139

-15 10K

9

10 TACH SELECTEDWHEN LOW

SELECTED RATE ORDRIVE CURRENT TOLOCAL CONTROLPANEL INDICATOR

-V

4713 12

7:10)1 3 1>j

DG- 200

01'0

®

4

Ml

5

2

+5

6-15 I K

SELECT BIT FROM• LOCA L CONTROL

PANEL SELECT- SWITCH

TACH SELECTEDWHEN CLOSED

-V

6 4

558

2

20K

NV,

+158

558

1-

10K

10K -

20K

106

COMPONENT SIDE

9 M1112

5678

1 234

17:22

10K

10K

- 20 -

45-ft Drive Motor Current Monitor and Display System:

Circuits were added to allow the servo motor drive effort to be monitored.

The circuit schematics are presented below.

POLYCARBONATEl p.F <

CURRENT ft.

INPUTMONITOR

AMP# 1 - I

AMP �fr2

AMP# 3

AMP-#4

TACHINPUT

SIGNAL

10 K

+15

1 8558

20K 3 +0

10K

10K

FOR ELEVATION AXIS

5583 a

F:8 K

+15

SELECT BIT FROMREMOTE CONTROLPANEL VIA

- DIGITAL DATA LINK

45 FL DRIVE MOTOR CURRENT MONITOR a MISPLAY ADDITIONS R. HALLMAN 12/73

- 21

- 21a -

CARD SLOT WIRING LIST

- 21b -


FOR: BOX DPCAR CARD 27 FOR: BOX DPCAR CARD 28

From To From To From To From To

Slot 2 - A Gnd 1 God Slot - A God 1 God

+5 +5+5 2 +5

B 2

3 3NC NC

4 4

5 NC 5 NC

6 S5-U 6 S5-17

NC NC NC 7 S5-T H 7

8S14-21 20 S14-20 NC NCJ

K

8

9 9S14-19 2 S14-18 NC NC

L S14-17 2 10 S14-16 L NC 10 NC

M S14-15 11 S14-14 Al NC 11 NC

N S14-13 2 12 S14-12 NC 12 S5-14

P S14-11 10213 NC NC 13

R NC 14 S-1,13 NC 14 NC

S5-S 15 S5-15 NC 15

S3-15 16 NC 16

U S3-T 17 S3-16 NC 17 NC

V NC 18 NC V 18

\IV NC 19 S5-19 VV NC 19 NC

NC NC

(powerX +15 V DC ( 8ap) +15X 20 20

S2-21 21 S2-2 -15 V DC supply) 21 -15

S3-22 22 S2-1 - Buss pin 22 thru S5-22 22 S3-Z

slots 2, 3 & 4 and 7, 8

Abbreviations: BNC Connectors:& 9.

Bl, B2, B3, etc. Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22 Ex: S 25-22Elco Connectors: J1, J2, J3, etc. Elco Connectors: J1, J2, J3, etc.Slot 25, Pin 22

Slot Connectors: Si, 52, 53, etc.Slot 25, Pin 22 Slot Connectors: 51, 52, 53, etc.

J9-MM Pin No.'s -3, -X, -B, -22, etc. J9-MM Pin No.' s -3, -X, -B, -22, etc.Elco J9, Pin MM Elco J9, Pin MM

- 21c -


- 21d -


FOR: BOX DPCAR CARD 27 FOR. BOX DPCAR CARD 27


Slot 5 - A God 1 God Slot 7 - A Gnd 1 Gnd

B +5 2 +5 B +5 2 +5

C 3 C 3

D 4 D 4

E 5 E 5

F 6 F 6

H NC 7 NC H NC 7 NC

J S14-Z 8 S14-Y J 519-21 8 119-20

K S14-X 9 S14-W K 519-19 9 S19-18

L S14-V 10 S14-U L 119-17 10 119-16

M S14-T 11 S14-S M 519-15 Ni S19-14

N S14-R 12 S14-4 N S19-13 12 S19-12

P S14-10 13 S14-8 P S19-11 13 NC

R NC 14 R NC 14 18-13S S7-5 15 S7-15 S S10-S 15 S10-15

T 16 NC T 18-15 16 NCU 17 U S8-T 17 58-16

V NC 18 NC V NC 18 NCW S5-19 19 NV 57-19

19510-19

X S5-Y 20 NC X NC 20 NC

Y S5-21 21 S2-Y Y 17-21 21 57-2

Z S5-22 22 S2-22 Z 57-22 22 S7-1

Abbreviations: BNC Connectors: Bl, B2, B3, etc. Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22 Elco Connectors: J1, J2, J3, etc. Ex: S 25-22 Elco Connectors: J1, J2, J3, etc.Slot 25, Pin 22 Slot Connectors: 51, S2, S3, etc. Slot 25, Pin 22 Slot Connectors: 51, S2, S3, etc.

J9-MM Pin No.'s -3, -X, -B, -22, etc. J9-MM Pin No.'s -3, -X, -B, -22, etc.Elco J9, Pin MM Elco J9, Pin MM

- 22 -

- 22a -


- 228 -


FOR BOX DP CAR CARD 28 FOR: BOX DPCAR CARD 27


Slot 8 God 1 God Slot 10 - A Gnd 1 Gnd A

+5 2 +5 +5 2 +5

B B

C NC 3 NC C 3

4 D 4D

E ENC 5 NC 5

F S10-U 6 S10-17 F 6

H NC 7 S10-T H NC 7 NC

J 8 NC J S19-Z 8 S19-Y

K

NC

NC 9 NC K S19-X 9 S19-W

10 NC L S19-V 10 519-U

L

MM

NC

liC 11 NC S19-T 11 S19-S

N NC 12 S10-14 N S19-R 12 519-4

P NC 13 P 119-10 13 S19-8

R NC 14 NC R NC 14

S NC 15 S S12-T 15 S12-J

16 T 16 NCT

UU17 NC 17

V 18 V NC 18 NC

W 19 W 510-19 19

20 +15 SIX X S10-Y 20 NC X

Y Y+35 -15 21 -15 53-Y

S10-21 21 S7-Y

z S10-22 22 58-7, z 510-72 22

Abbreviations: BNC Connectors: Bl, B2, B3, etc.Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22Slot 25, Pin 22

Ex: S 25-22Slot 25, Pin 22Elco Connectors:

Slot Connectors:

Jl, 22, J3, etc.

Sl, S2, S3, etc.

Men Connectors:

Slot Connectors:

J1, J2, J3, etc.

51, 52, 53, etc.

JO-MMElco J9, Pin MM

Pin No.'s -3, -X, -B, -22, etc.J9-MMElco J9, Pin MM

Pin No.'s -3. -X, -B, -22, etc.

rl .

- 22c -


FOR: BOX DPCAR CARD 29

From To From To

God 1 Gnd

+5 2 +5

512-3 3 S8-X +15

112-4 4SOY -15

NC 5 NC

NC 6

7NC

8 NC

9 NC

10 NC

NC Ni NC

12

NC 13 NC

14 NCS12-1Red

or43 H

L6

NC 15

16

NC 17 NC

18

19

NC 20 NC

NC 21NC

NC 22 NC

- 22d -


DPCAR CARD 30

From To From To

Gnd 1 Gnd

+9 2 +5

3- F

4 Elevation B Yel

5Cross-OverSwitch

E Br

6Pin D Red

7_ C Or

8

9 S12-H

LSB

Slot 12 - A

B

C

D

E

F

H

J

K

L

M

N

S12-B P

1 RBr & Yel

1 S

Initializeposition read-out lamp inorange buttonon front panel.

U

V

W

X

Y

z

T

FOR: BOX

Slot 14

MSB

20 BitCompositePositionReadoutWithoutDigitalOffsetCal

- A

D

10

11

12

13

14

15

16

17

3 18

19

X 20

• NC 21• NC 22 114-1


Ext S 25-22 Elco Connectors: J1, J2, 53, etc. S 25-22 Elco Connectors: J1, J2, J3, etc.Slot 25, Pin 22 Slot 25, Pin 22

Slot Connectors: Si, 52, 53, etc. Slot Connectors: Si, S2, 53, etc.

J9-MM Pin No.'s -3, -X, -B, -22, etc. J9-MM Pin No.'s -3, -X, -B, -22, etc.Elco J9, Pin MM Elco J9, Pin MM

23 -

- 23a - - 236 -

CARD SLOT WIRING LISTCARD SLOT WIRING LIST

FOR: BOXFOR: BOX DPCAR CARD 31

DPCAR CARD 31

From To From To

From To From To

Slot 15 - A God 1 God

B +5 2 +5

C 3 S14-C

D 4 S14-D

E 5 S14-E

F 6 S14-F

H 7 S14-H

J 8 S14-J

K 9 S14-K

L 10 S14-L

M 11 S14-M

N 12 S14-N

P NC 13 S16-P

R NC 14 NC

S NC 15 S12-L

T NC 16 NC_

U 86 - D 17 86 - ,

3 85 - C 18 86 - E

8 5 - E 85 - DW 19

X 84 - D20

84 - ,

Y 83 - C 21 84 - E

Z All Pin E Bussed 22 All Pin F Bussej-


B +5 2 +5

C 3 114-P

D 4 114-R

E 5 114-S

F 6 S14,

H 7 S14-U

J 8 S14-V

K 9 S14-W

L 10 114-X

M 11 116-1

N 12 516-11

P 13 516-1

It NC 14 NC

S NC 15

T NC 16 NC

U 83

E 17

3 82 - n 18

W 81 - C 19 82 - E

X 81 - E 20 81 - D

Y 516-21 21 116-1

Z NC 22 NC

Al! below lino

to digital off-

set cal switch

elevation.

Abbreviations:

Ex: S 25-22Slot 25, Pin 22

J9-MMElco J9, Pin MM

BNC Connectors: BE, B2, B3, etc.

Elco Connectors: Jl, J2, J3, etc.

Slot Connectors: Si, 52, 53, etc.

Pin No.'s -3, -X, -B, -22, etc.

Abbreviations: BNC Connectors: Bl. B2, B3, etc.

Ex: S 25-22 Elco Connectors: J1, J2, J3, etc.Slot 25, Pin 22 Slot Connectors: Si, 52, 53, etc.

J9 -MM Pin No.' s -3, -X, -B, -22, etc.Elco J9, Pin MM

- 23c -

CARD SLOT WIRING

DPCAR CARD

LIST

32 FOR: BOX

FromTo ToFrom

1 Slot 19 - AGnd B-1 Shell 5 V - Remove power buss

S12-C +15 V 2 512-D

Fins A, 13, 1, 2

-15 VB

B-1 - Center Pin 3 514-9

NC 4 S17-A

5 S15-C

6 S15-D

7 S15-E

8 S15-F

9 S15-H

10 S15-J

Posi- 11 115-Ktion

S15-L12Rad-e 13 S15-Mout

S15-N14

15 S16-C

16 S16-D

17 S16-E

516-FV

18

19 S16-H

S16-JX

20

21 S16-K

22 516-1

FOR: BOX

From

Slot 17 - A

Elevation BPosition

Error C

Analog Out

Elevation

Compliment

Position

Command

Input R

S

T

U

V

W

X

Y

Z

- 23d -


DPCAR CARD 30

To From To

Gnd 1God

+5 2 +5

3 Azimuth

4 Cross-Over B

5Switch Pin E

6

7

8 NC

9 117-3

10 NC

11

12

13

14

15

16

17

18

19

20

NC 21

NC 22 119-1

Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22 Elco Connectors: J1, J2, J3, etc,Slot 25, Pin 22 Slot Connectors: Si, 52, 53, etc.

19-MM Pin No.'s -3, -X, -B, -22, etc.Elco J9, Pin MM

Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 2522 Elco Connectors: J1. J2. J3. etc.Slot 25. Pin 22 Slot Connectors: Sl, 52, 53, etc.

J9 -MM Pin No.' s -3, -X, -B, -22, etc.Elm J9, Pin MM

- 24 -

- 24a -


- 24b -




Slot 20 - A Gnd 1 Gnd Slot 21 A Gnd 1 End

2 +5 B +5 2 +5

C 3 119-C C 3 119-P

D 4 S19-D D 4 S19-R

E 5 S19-E E 5 S19-1

6 019-F F 6 119-T

7 S19-H H 7 S19-U

8 S19-J J 8 S19-V

9 119-K K 9 119-W

10 119-L L 10 S19-X

11 S19-M M Ni S21-1

12 S19-N N 12 521-11

NC 13 021-P P 13 S21-1

NC 14 NC R NC 14 NC

S NC 15 S21-15 S NC 15 S16-15

T NC 16 NC T NC 16 NC

U 86 - D 17 86 - C U 83 - E 17

AzimuthV 85 - C_ 18 86 - E V 82 - D 18 -C

PositionVV 85 - E 19 85 - D W 81 - C 19 8

2 - E

DigitalX 84 - D 20 84 c X 81 - E 20 81 - D

Offset

Cal Y 83 -C 21 84 -E Y 021-21 21 121-1

All pin E bussed. All pin F bussed.NC 22 NCZ 22 Z

Abbreviations: BNC Connectors: 131, B2, B3, etc. Abbreviations: BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22 Elco Connectors: J1, J2, J3, etc. Ex: S 25-22 Elco Connectors: J1, J2, J3. etc.Slot 25, Pin 22 Slot Connectors: SO, 52, 53, etc.

Slot 25, Pin 22Slot Connectors: 51, 52, 53, etc.

J9-MM Pin No.'s -3, -X, -B, -22, etc. 29-MM Pin No.'s -3, -X, -B, -22, etc.Elco J9, Pin MM Elco J9, Pin MM

FOR:

Slot

BOX

22

- 24c -


DPCAR CARD 32

2

FOR .

Slot 24

BOX

- 24d -


DPCAR CARD 24

From

A

V

X

To From

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

To From

- A

To From

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

To

Gnd B-2 Shell +5 Remove power Gnd Gnd

017-B 117-2 bass pin A B1 B

C

D

E

F

H

J

K

L

M

N

P

R

S

T

U

V

W

X

Y

Z

021-J +5

B-2 - Center Pin S19-9 515-C

112-N S2O-5 115-K

N20-C 120-F 515-}"

020-D 120-C 121-E

120-E 120-K 516-E

120-F 015-N S15-L

S20-H521-K 516-3

120-J 516-C 521-C

S20-K 516-F 016-K

120-L 025-C 515-5

120-M 015-D 125-5120-N 521-F

121-C 520-D 120-H

121-D 120-L 016-L

121-E 116-D 115-M

121-F 115-3 116-H

121-H115-E 021-L

20 121-J 021-D 521-5

21 121-K020-E

22 121-L S20-J 020-M


Ex: S 25-22 Elco Connectors: J1, J2, J3, etc. Ex: S 25-22 Elco Connectors: J1, J2. J3, etc.Slot 25. Pin 22 Slot Connectors: 51, 52, 53, etc. Slot 25, Pin 22 Slot Connectors: 51, 52, 53, etc.

J9-MM Pin No.'s -3. -X, -B, -22, etc. J9-MM Pin No.'s -3. -X, -B, -22, etc.Elco 39, Pin MM Elco J9, Pin MM

- 25 -

FOR:

Slot 25

BOX

- 25a -


DPCAR CARD 25 FOR:

Slot 26

BOX

- 25b -


DPCAR CARD 26


F

V

X

+5 1 Gnd A

S

T

U

V

W

X

Y

Z

Gnd 1 Gnd

2 S26-3 +5 2 +5

3 3

4 4

5 S22-D NC 5 S17-Z

6 S12-K NC 6 S17-Y

7 S26-D 7 S17-X

S26-C 8 8 517-W

9 826-T 9 S17-V

S26-M 10 S26-H 10 S17-U

11 11 S17-T

12 12 S17-S

13 S26-R 13 S17-R

S26-N 14 S26-S 14 S17-P

S26-L 15 S26-P 15 S17-N

S26-K 1616 517-M

S22-L 17 S22-T S22-Z 17 S17-L

S22-K 18 S22-S S22-Y 18 S17-K

S22-J 19 S22-R S22-X 19 S17-J

S22-H 20 S22-PS22-W 20 S17-H

S22-F 21 S22-N S22-V 21 S17-F

522-E 22 S22-MS22-U 22 S17-E

Abbreviations: BNC Connectors: B1, B2, B3, etc.Abbreviations: BNC Connectors: Bl, B2, B3, etc.Ex: S 25-22

Slot 25, Pin 22Ex: S 25-22 Elco Connectors: J1, J2, J3, etc.Elco Connectors: J1, J2, J3, etc.

Slot 25, Pin 22 Slot Connectors: Si, 52, 53, etc.Slot Connectors: Si, 52, 53, etc.

J9-MM Pin No.' s -3, -X, -B, -22, etc.J9-MM

Elco J9, Pin MMPin No.' s -3, -X, -B. -22, etc.

Elco J9. Pin MM

- 26 -

- 26a -


- 26b -




Slot 24 - A Gnd 1 God Slot 25 -- A VCC1 and

A16 2 B J3-B 2 526-3 B

C CJ3-Z

vrr 3 El

El-N 3 J3-A

D A10 4 E7 D Jii-F 4 41-1

E A4 5 E4 E J3-H 5 AS Al = M.S.B. and

Al 6 A13 F J3-C 6 20 Hz Control Signal

A18 = L.S.B. of FA7 7 113 S1-13

Input7 53-5

the Azimuth HH

110 8 E8 53-C 8 J3-d J

Position J

417 9 116 33-b 9 S3-T Readout. KP:

LEl = M.S.B. and

M

Ell 10 All LAS M.S.B.

of the M

S3-M 10 S3-H

114 11 R17 J3-S Ni J3-R

S2-C 12 E5 J3-P 12 J3-N 118 = L.S.B. of

the ElevationN

PPosition

Azimuth N

Position PCommand R

E2 13 S2-H J3-M 13 S3-R

J3-Y 14 A14 S3-N 14 53-5

Readout R

42 15 AS S3-L 15 S3-P SS

T A8 16 118 T J3-L, 53-K 16 J3-T

U Ell 17 E9 U 46 17 412

E6 18 115 AS 18 All

VV

VV 13 19 Al8 W A4 19 410

X Al2 20 415 X A3 20 A9

Y A3 21 J3-X Y A2 21 A8

46 22 49 Z Al 22 47

Z

Abbreviations: Abbreviations:

BNC Connectors: BE, B2, B3, etc. BNC Connectors: Bl, B2, B3, etc.

Ex: S 25-22Slot 25, Pin 22

Ex: S 25-22Slot 25, Pin 22Elco Connectors:

Slot Connectors:

J1, J2, J3, etc.

Si, 52, 53, etc.

Elco Connectors:

Slot Connectors:

J1, J2, J3, etc.

Si, 52, 53, etc.

19-MMElco J9, Pin MM

Pin No. s -3, -X, -B, -22, etc.J9-MMElco J9, Pin MM

Pin No.'s -3, -X, -B, -22, etc.

- 26c -


FOR BOX DPCAR CARD 26

From To From To


B VCC 2 VCC

C S2-J 3 S25-2

D S2-7 4 Calculator Inhibit

E NC 5 118

F NC 6 117Al8 is the

H S2-10 7 El6L.S.B. of

the Azimuth J NC 8 115

S2-T, J3-L 9 114Position K

Command L S2-S 10 113

M .S2-L 11 E12

El is the N S2-R 12 Ell

M.S.B. ofS2-15 13 EH

the Eleva-P

S2-13 14 E9tion Posi-

R

S2-14 15 E8tionS

S2-9 16 17Command T

U A18 17 E6

V 417 18 E5

W A16 19 14

X Al5 20 E3

Y A14 21 E2

Z A13 22 El

Abbreviations: BNC Connectors: Bl. B2, B3, etc.

Ex: S 25-22 Rico Connectors: J1, J2, J3, etc.Slot 25, Pin 22

Slot Connectors: Si, 52, 53, etc.

J9-MM Pin No.' s -3. -X, B. -22. etc.Elco J9. Pin MM

- 27 -- 27a -

ELCO CONNECTOR LIST FOR PDX/RACK/DRAWER DPCAR ELCO

End20

AA

BB

CC

Du

EE

FF

HH

KK

LL

MM

NN

PP

RR

SS

TTEnd —,38Pin

CONNECTOR

SMALL KEY

Pin To

CONNECTOR:

LIST FOR

DESIGNATION

, LARGE

FUnction

BOX/RACK/DRAWER

- 27b -

DPCAR

CONNECTOR: DESIGNATION T-1 ; TYPE Elco 56 PINS J-2 ; TYPE Elco • 56 PINS

SMALL KEY LARGE KEY PANEL P CABLE E

FUncton

KEY PANEL E CABLE P

FUnctonpin To Fraction Pin To pia To

A S12-N Az Pos Bit 1 MSB S16-LEltyttNn sition

A S22—D An Pos Con Bit l(MSB) u S17-Z El Pos Corn Bit 19 (LOB)

B S20-C Az Pos Bit 2 S16-4i Logic Common 2 , S17-2 Logic Common Gnd

C S20-D Az Pen Bit 3 w S12-6 Link Sync 3 w S26-4 H5/116 Control Select

Logic Common GndD 520-E An Son Bit 4 n 512-1 Logic Common 4 n 026-1

E S20-F An Pon Bit 5 5 y 012-15 Initialize P.R. Crpoy/D

F S20-H Az Son Bit 6 z 6 c S12-1 Logic Comnwn

H S20-J Az Pon Bit 7 AA 7 AA

, S20-K An Pon Bit 8 BB 8 BB

K S20-L An Son Bit 9 CC 9 Cc

L S20-M An Son Bit 10 DD 10 DD

M S20-N An Son Bit 11 EE 522-C An Son Error + Oct 11 EE

N S21-C An Son Bit 12 FF S22-A An Son Error - Oct 12 PE

P S21-D An Son Bit 13 HH 017-C El Pos Error + Oct 13 HH

R S21-E An Son Bit 14 JJ 017-A El Son Error - Oct 14 JJ

B S21-F An Son Bit 15 KK V 15 KK +5 Volts

T 021-H An Son Bit 16 LL 16 LL Ground

U O21-.S A7 Pen B i t 17 IVEM X 17 MM

V 021-K An Son Bit 18 En, NN 18 End NN

W 021-L Az Son Bit 19

21, 32, J3, etc.01, 02, S3, etc.

S22-Z • V •56

19

J1, J2, J3, etc.Si, S2, 83, etc.

End20 X 021-A Logic Common Gnd —>

p.

X 022-A Logic Common Gnd -_121>Pin , 015-A El Son Bit 1 MOB S17-D El Pos Con Bit 1 (MSB)Y

Z 015-C El Son Bit 2 2

AA a 015-D El Son Bit 3 a 3

S15-EBB

E1 Pos Bit 4 b 4

CC c 015-F El Son Bit 5 c 5

DD d 015-H El Son Bit 6 d 6

EE S15-J El Son Bit 7 7

FF 0 015-K El Son Bit 8 8

Hg h 815, Ri Pon Bit 9 h 9

JJ 015-M El Son Bit 10 10

KK k 015-N El Son Bit 11 k 11

LL 1 S16-C El Son Bit 12 1 1 2MM m S16-D El Son Bit 13 m 13

NN n R1 Pen Rif 14 n 14

PP S 016-F El Son Bit 15 p 15RR r 016-H El Son Bit 16 r 16

SS S16-J El Son Bit 17 X 17TT t S16-K El Son Bit 18 S17-Y • V 1r 18End Abbreviations: Elco Connectors:38 —> E, S25-22 Slot Connectors:Pin Slot 25, Pin 22 I g:,'T 19, Pin MM

Abbreviations: Elco Connectors:Slot Connectors:

ED: SS1.2o5t-2225, Pin 22 3E91coMJM9, Pin MM

ELCO CONNECTOR

CONNECTOR:

SMALL KEY

LIST FOR

,

— 27c —

BOX/HACK/DRAWER OSCAR ELCO CONNECTOR

SMALL

— 27d —

LIST FOR BOX/RACK/DRAWER DPCAR

DESIGNATION J-3 ; TYPE Elco ; 56 PINS CONNECTOR: DESIGNATION J3 TYPE Eloo 56 pms

LARGE KEY PANEL P CABLE E KEY LARGE KEY PANEL P CABLE E

Pia To Function Pin To Function Pin

,

To Function Fla To FUnction

A 025-3 Encoder OutputA 1-H 5-3 Encoder Output

B 025-B _Clock Pair B 1-N 5-B Clock (twisted pr)025-1 Gnd

GndC

D 025-1 Gnd GndE 025-4 Position Command E 1-16 5-4 Position CommandF 025-D Strobe Pair

F 1-V 5-D Strobe (twisted pr) zH 025-E _Encoder Protect AA H 1-17 5-E Encoder Protect AA

025-A +5 BB 3 VCC BBK 025-A +5 CC K Vcc CCL T Output- Rik DD L 1-13 5-T Output Blk DOM P Br EE M 1-D 5-P Lines Br EEN 12 R FF N 1-M 5-12 K SF

0 HH P 1-E 5-N 0 HH11 Y JJ R 2-R 5-11 Y 33

ir m y Grn KK S 1-R 5-MT 025-16 Output Blue LL T 1-14 5-16 B LLU 024-2 +5 Mm NC MMV

W524-2 +5 End

NN NC V Va End NNA Gnd 56

Pin56

Gnd End20 . End x21 Input Blk —>

Pin2-K 4-21 Input Blk —>

Piri-''y

zR Input Br y 2-L 4-R Lines Br

1r c Input R2-Z 4-C

AA a

BB

024-A GndAA

BB

a

b

24A Gnd 025-K Counter 4

3-22 5-K Counter '4' 025-F Counter 2

3-W 5-F Lines '2' CCCC c

025-8 Counter 1 3-16 5-8 '1' DD dDD d

EE25

FF fEE

SF f Cable wired HH h

T.TH h through t

in twisted pairsJJ

JJ jKK k

KK kLL 1 LLMM m mNN n NN nPP PP pRR RRSS SSTT TTEnd38 —>Pin

Abbreviations: Elco Connectors:Ex: S25-22 39-MM Slot Connectors:

Slot 25, Pin 22 Elco 39, Pin MM Pin No. 's

31, 32, 33, etc.Hi, S2, S3, etc.-3, -X, -B,

End38 —>Pin

Abbreviations: Elco Connectors:Ex: S25-22 J9-MM Slot Connectors:

Slot 25, Pin 22 Elco J9, Pin MM Pin No. 's

J1, J2, J3, etc.Si, S2, S3, etc.-3, -X, -B,

Through balance; adjust board; mounted behind cardslots nos. 7-10.

See balance board1 schematic.

Elco Connectors: J1, J2, J3, etc.Slot Connectors: al, 52, 53, etc.Pin No. ' s -3, -X, -B,

- 28 -

- 28a -

ELCO CONNECTOR LIST FOR BOX/RACK/DRAWER DPCAR

CONNECTOR: DESIGNATION J-5 TYPE Elco 38 PINS

WALL KEY LARGE KEY PANEL P CABLE E

Function Pin To Function

A S2-3 Coarse Sine +

S2-4 Coarse Sine -

S2 -A Shield

S2-6 Coarse Cosine + x

S2-5 Coarse Cosine - ' Y

S2-A Shield z

S3-V Coarse Error + AA

S3-18 Coarse Error - BB

S3-22 Shield

53-4 Fine Error - DD

S3-D Fine Error + BE \

N S3-A Shield FF

P S5-5 Fine Cosine

R S5-6 Fine Cosine + JJ

S S5-A Shield I KK

28b -

ELCO CONNECTOR LIST FOR BOX/RACK/DRAWER DPCAR Position Azimuth

CONNECTOR: DESIGNATION J-6 ; TYPE Elco ; 38 PINS

WALL KEY LARGE KEY PANEL p CABLE E

Ell To Finiction pia To Function

A 57-3 Coarse Sine + 5 u

B S7-4

C S7-A Coaeld

rse Sine -

Shi

D S7-6 Coarse Cosine +

E 57-5 Coarse Cosine -

F S7-A

H $8-V Coarse Error +

J S8-18 Coarse Error -

K S8-22 Shield

L S7-4 Fine Error -

M S8-D Fine Error +

• S8-A Shield

P 510-5 Fine Cosine -

R 510-6 Fine Cosine +

• S5-4 Fine Sine - LL• 55-3 Fine Sine +

3 S5-A Shield I EndS3-A 56

End Pin20 S3—A

P5

• Ri-X +15 Volts Thru balance adjustS3-A board mounted behind

a• S3-A

i card slots nos. 2-5.

NC; See balance board1 schematic.

NCAbbreviations: Elco Connectors: J1, J2, J3, etc.Ex: S25-22 J9-MM Slot Connectors: 51, 52, 53, etc.

Slot 25, Pin 22 Elco J9, Pin MM

• $10-A • S10-4 Fine Sine -

U 510-3 Fine Sine +

3 S10-A Shield

w S8-A End20 X SR-A

Y S8-A

• 58-X +15 V DC

AA a

BB b

CC

DD d

BE

FF f

HH h

JJ

KK k

LL 1

MM m

NN n

PP p

RR r

SS

TTEnd38Pin

AA

BB

CC

DD d

EE

FF f

HH h

JJ j

KK k

LL 1

m

NN n

PP p

RR

SS

TTEnd38 —,Pin

End

Pin

S8 -A

S8 -A

NC

NC

Abbreviations:Ex: 025-22 J9-MM

Slot 25, Pin 22 / Elco J9, Pin MM

— 28c —

ELCO CONNECTOR LMT FOR BOX/RACK/DRAWER DPCAR

CONNECTOR: DESIGNATION 5-7 • TYPE Elco 38 pms

SMALL KEY , LARGE KEY PANEL P CABLE E

pinTo Function Pin To Function

A S12-V Az MSB S 1 +

B 512-18 Az MSB S 1 -

C S12-1 Shield

• S12-W Az MSS S 2 +

E S12-19 Az MSS S 2 -

• S12-A Shield

AA

BB

CC

DD

EE

3 En, NN56

End Pin20 X —>PirE>

RR

Abbreviations: Elco Connectors: J1, J2, J3, etc.

Eu :nTR jr91-1mSlot Connectors: Sl, S2, S3, etc.

J2-CJ2-D

IIIJ4-AJ4-BJ4-C

AZIMUTH

YELLOW

ELEVATION

YELLOW

J-5Elevation Elco

Coarse + S2-3 A

Sine - S2-4 B

Shield 52-A c

Coarse + S2-5 DCosine - S2-6 EShield 52-A F

Coarse + S3-V HError - S3-18 JShield S3-22 K

Fine - 53-4 LError + S3-D MShield S3-A N

Fine - S5-6 PCosine + 55-5 RShield S5-A S

Fine - 55-4 TSine + 55-3 U

Shield S5-A V

Spare S3-A WGround S3-A X

S3-A Y

Bendix Stub

A J2-AJ2-B

J2-EJ2-F

IIIIIII Jl-CJl-J

Jl-B

V

SOME —MAIN FRAME CIRCUITS

- 29b -

GREEN

YELLOW

NOTCH

TO AUGATSOCKET"B"ON CARD 22

J5-AJ5-BJ5-C

Preamp Stub

J3-AJ3-B

Connector Body

52 = 5753 = 5855 = 510

- 29 -

- 29a-

Preamp +15 S3-X Z X Dolfa, J4-DPower S3-A a J4-E

Shield S3-A b Z J4-F

Jl = MS3108A-18-1S Jl-D

32 = MS3108A-165-1S Jl-E

J3 = MS3108A-12S-3PJ4 = MS3102A-14S-6S Jl-F

J5 M53106A-14S-7S Jl-G

Azimuth same except Jl-H

Elco = J6 J1-I

- 29c-

PHYSICAL LAYOUT - INDUCTOSYN STUB

10 Pin - JlM53108A-18-1S

7 Pin - J2MS31-08A-16S-1S (to Ind.)

Preamp

V4 - 6 Pin J5 - 3 PinMS3102A-14S-6S MS3106A-14S-7S

Bendix24 Pin

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