Servo and Handset Attenuators (EAI 580 Console Manual, Chapter 5)
CHAPTER 5
SERVO AND HANDSET ATTENUATORS
5.1 INTRODUCTION
A fully expanded 580 Computer has a complement of 80 potentiometers. Of these, 70 are ser-
vo-driven, permitting rapid manual or automatic program setup. The computer is provided
with a keyboard unit that permits pushbutton addressing and value entry for servo attenuators,
Optional peripheral equipment may be supplied to permit pot setting from digital computers,
punched paper tape, typewriter keyboards, etc. A manually operated lever on the analog con-
trol panel permits proportional control of any addressed servo pot.
The 10 handset pots may be used for any function requiring a manually set pot, or where the
convenience of a servo pot is not needed.
All attenuators have a non-linear resistance in series with the wiper to avoid possible damage
to the pot in the event of a patching error. This resistance has a negligible value for ordinary
current levels, but increases rapidly as current through the wiper increases, preventing burn-
out of the winding under excessive loading. The series resistance introduces no error into the
circuit, since the pots are set under normal loading, thus taking the additional resistance into
account.
5,2 TECHNICAL DATA
Resistance Value ...csseeecssrseccsccvccsceccs 5K
Setting Error*® .........+.-2+.«> sescceecessvees +1,0 Millivolt, Maximum
5.3 THE SERVO ATTENUATOR SYSTEM
The servo attenuator system consists primarily of the motor-driven attenuators (Figure 5. 1), ,
a servo amplifier, and a digital-to-analog converter. The computer readout system energizes
relays on the attenuator assemblies that connect the servo amplifier to an addressed attenuator
motor; the mode control system energizes a relay permitting pots to be driven only when the |
computer is in the pot set mode**, | |
ion applies to the servo attenuator assemblies only.
using the POT CONTROL lever can be performed in any mode,
a SERVO AND HANDSET ATTENUATORS
Figure 5.1. Servo Attenuators
5.3.1 Theory of Operation
The block diagram of Figure 5.2 illustrates the basic arrangement of the components included
in the servo attenuator system. Enter the desired potentiometer coefficient on the DAC keyboard,
The values of the resistors selected in the DAC provide a current into the amplifier that is
proportional to the required analog voltage. The positive output from the DAC is connected
through the digital I/O switch, located on the 0, 51.0359 Address Select Card to an input of the
servo amplifier.
_ The top of an addressed servo pot (when the computer is in the SP mode) is connected to positive
The wiper of the addressed pot is connected to the other input of the servo amplifier.
of each pot (except for those in the -4 positions) is grounded. The bottom of any -4
; must be grounded prior to setting. (In an attempt to null, the servo drives an un-
foe highest resistance, The pot is held in this position until the CLR pushbutton
the pot is grounded.) The output of the servo amplifier is a voltage having a
'y dependent on the difference between DAC output (the desired pot coefficient)
. “Sidi the ape of the pot. The servo amplifier thus provides a signal to
y of tac and value selection, ——_ the servo slewing
cator, in the units value display on the DVM, is lit,
CHAPTER 5 SERVO AND HANDSET ATTENUATORS
POT
CONT
'
DIGITAL i
INPUTS BOAG
| oe ~
+10v
SERVO SERVO REF
AMPLIFIER ous PATCHING
TERMINALS
>
o—
S
4 POT
READOUT
RELAY
---@----
POT READOUT
BUS
Figure 5.2. Servo Attenuator System, Basie Block Diagram
Figure 5.3 shows the circuit in more detail. To enter the desired pot coefficient it is necessary
to activate the RDAC pushbutton switches. Each switch connects a precision resistor or a com-
bination of resistors from negative reference to the input of the DAC amplifier. The value of
each resistor or combination of resistors is inversely proportional to the ''weight" of the acti-
vated switch. For example, the 1, 2, 4, and 8 switches connect resistors having ratios of
8000, 4000, 2000, 1000; the 10, 20, 40, and 80 switches connect resistors having ratios of
800, 400, 200, and 100, respectively, etc. Thus, the current provided by each resistor is
directly proportional to the switch weight. The resultant output from the DAC amplifier is an
analog voltage equal to the characters entered on the DAC keyboard, The output of the DAC is
connected through the digital I/O switch, located on the 0.51.0359 Address Select Card to an
input of the servo amplifier.
The 0.6. 0677 Servo Amplifier (J1) receives an input from the DAC (pin 11), and an input from
the wiper of an addressed pot (pin 12). The Servo Amplifier consists of a transformer-coupled
differential input section and a direct-coupled driver section. When the SET pushbutton is de-
pressed following the entry of data, relay K1 energizes. The contacts of this relay connect the
servo amplifier input section to the driver section, and apply relay voltage to the coil of K2,
the null detector circuit, the chopper oscillator, and relay K1 on the 0.51. 0288 Servo Control,
‘The Relay K2 connects the pot wiper to the input section. The chopper oscillator drives a two- a
SERVO AND HANDSET ATTENUATORS
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CHAPTER 5
One pole of the chopper converts the difference voltage between the pot wiper and the DAC level
from a dc signal to an ac signal. The ac signal is amplified by the input section, and the amplified
ac signal at the output of this section is synchronously detected by the other pole of the chopper.
The resulting pulsating de signal is amplified further by the output section, and connected through
relay K1 on the 0.11.0212 Pot Mode Relay Card (energized in the SP mode) to the pot motor
drive bus (bus 20-1). Relay K1 on the addressed 0. 42,0327 DAS Attenuator Assemblies is en-
ergized, coupling the servo amplifier output signal to the pot motor. As the motor drives the
pot wiper, the difference signal into the servo amplifier becomes progressively smaller. When
the voltage at the pot wiper is within about 1 millivolt of the level from the DAC output, the null
sensing circuit causes KI on the servo amplifier card to de-energize. When K1 de-energizes,
the input to the servo amplifier driver section is removed. After the contacts of K1 open, K2
de-energizes, removing the pot wiper signal from the servo amplifier, Since the contacts of
K1 open before K2 can de-energize, the transient signal that occurs when K2 de-energizes does
not affect the pot motor,
5.4 HANDSET ATTENUATORS
The handset attenuators are similar to the servo set attenuators in that they are addressed and
read out in the same manner. The two types of units differ in that setting the servo set pots is
almost an automatic procedure where the handset pots are set-up using a manual method. Two
methods of setting the handset pots are given below. To set the handset pots using a DVM for
reading the pot coefficient, proceed as follows:
PB OF NM
. «©
5.
This completes the pot setting using a DVM for readout purposes. F
If a DVM is not available, the handset pots have to be set using a null voltage method. The pro-
cedure for this method is given below.
i
2. Address the desired el aie mee P09).
SERVO AND HANDSET ATTENUATORS
Place the computer in the SP mode.
Address the desired pot (P00 through P09).
Ground the low terminal.
Adjust the precision knob on the selected pot until the DVM reads out the desired pot
coefficient.
Lock the knob to prevent accidental misadjustment.
Place the computer in the SP mode,
SERVO AND HANDSET ATTENUATORS
pot and the VM are now connected in the configuration shown in Figure 5. 4.
AC pushbuttons for the desired pot coefficient.
t the desired pot until the VM nulls (reaches zero).
the pot knob to prevent accidental misadjustment.
es the null voltage method of setting pot coefficients.
DAC
ay 3 DAC
_ASK O— = Aan: 6 Ol
+10V
| ou 13 S 13 7 :
Figure 5.4. Handset Attenuator Null Voltage Circuit
- 5
circuit, When the SET pushbutton is depressed following the entry
s provided to pin 13 of the card. This high forward biases Q7,
o the servo output section (transistors Q8-Q13). Another set
elay power to: 1) the coil of relay K2; 2) the chopper oscil-
ctor circuit; 4) acts as a null indicator to an external
K1 on the 0. 51, 0288 Servo Control Card.
er of the addressed pot is connected through R1
lator (Q1-Q2) is a 400-cycle push-pull
input from the DAC is connected,
). The resulting signal at the
to the difference between
ee"
CHAPTER 5 SERVO AND HANDSET ATTENUA TORS
the existing pot wiper voltage and the voltage from the DAC. The error signal is amplified by
common-emitter stages Q3 and Q4. Resistor R9 together with :esistor R11 provides feedback
| around the Q3-@4 stages. Transistor Q5 is an emitter-follower, providing an output to the
primary of T2, and through the wiper of R13 to the null detector circuit. Capacitor C6 and re-
sistor R8 provide feedback around the Q4-Q5 stages.
The pulsating signal at the wiper of R13 is coupled through R14 and C10 to a rectifier-filter
circuit consisting of CR5, CR6, and Cll. The resulting negative bias at the base of Q6 keeps
this stage cut off as long as the error exceeds a preset value. When Q6 is cut off, Q7 remains
conducting after the end of the initial Start pulse, thus keeping K1 energized.
The pulsating signal at the secondary of T2 is coupled to the base of Q8a by the arm (pin 2) of
chopper Di, The arms of chopper D1 are driven synchronously by the chopper coil. Thus, at
the instant when pins 7 and 8 of the chopper are connected together, pins 1 and 2 of the chopper
are also connected together. The pulsating voltage at pin 2 of the chopper has a polarity depend-
ent on the difference between the DAC level and the level at the wiper of the pot. If the level
from the DAC is more positive than the voltage from the pot, the voltage at pin 2 of the chopper }
is a positive pulsating voltage. Conversely, if the level from the DAC is less than the voltage \
from the wiper of the pot, the signal at pin 2 of the chopper is a negative pulsating voltage.
In either case, the signal is amplified by Q8a, and coupled to the base of Q9. The signal is
further amplified by Q9, and coupled to the bases of Q10 and Q12. The R23-C13 network pro- .
vides feedback for the Q9 stage. Diodes CR12 and CR13 establish the correct difference in |
bias levels for Q10 and Q12 without attenuating the signal. The Q10-Q11 stages are compound- W
connected and do not provide phase inversion, while the Q12-Q13 stages are both common-emit- i}
ter stages, also effectively providing no phase inversion. The signal at the junction of Q11 and
Q13 is thus a highly amplified pulsating dc signal that is connected to the motor of the addressed i}
pot. Resistors R24 and R25 provide a feedback signal from the output of the servo amplifier
to the base of Q8b. Since Q8a and Q8b are differentially coupled by common-emitter resistor '
R21, the amplitude of the feedback voltage at the wiper of R24 controls the overall gain of the
servo amplifier. |
The signal at the output of the servo amplifier drives the pot motor in the direction that reduces
the error signal. As the pot wiper approaches the voltage set in the DAC, the error signal de-
creases until the reverse bias on Q6 is not sufficient to keep the transistor cut off. As Q6 begins
to conduct, its collector goes toward ground, cutting off Q7. When Q7 cuts off, relay K1 de-en-
ergizes, disconnecting the pre-amplifier from the output section. The other contacts of K1
(5, 6) remove power from the null detector circuit, the chopper oscillator, relay K2, and the ;
pre pole on Hie Sai
SERVO AND HANDSET ATTENUATORS
he servo fails to null (for example, if no pot is installed in the address posi-
rounded pot became hung up, the CL (clear) key should be depressed. When
depressed, pin 16 of the servo amplifier card is grounded. The ground at
off Q7, exactly as if a null has been reached.
»OT CONTROL lever is used to set a pot manually, the input signal is connected to
bypassing the pre-amplifier section, The input signal at this point is derived
chopper supply, half-wave rectifier by CR1 or CR2 on the 0.51, 0288 Servo
, The polarity of the signal depends on the direction that the control lever is
amplitude is determined by the amount that the lever is moved from the center
Figure 3.5 illustrates this circuit in more detail.
The output of the single-shot is connected to one input of an AND gate. The second
is connected to the SP bus. In this manner, the output of the single-shot is
mode other than SP.
hbutton is depressed, pin 1 of OR gate 1a (located on the 0, 51. 0364 Set-Clear
_ forcing the output (pin 3) low. The low at the OR gate output essentially grounds
tor C1 and allows it to charge. When Cl starts to charge, pin 6 of
the gate output goes high. (The input to pin 7 of the AND gate is held
er is inthe SP mode.) The AND gate output pulse is connected to
o Amplifier energizing relay K1. The output of the gate is also
a to ensure that once the pushbutton is released the output of the
ypacitor is fully charged. Once the capacitor is charged, pin
th output returns to a low level.
order listed,
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le
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CHAPTER 5
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5.6.1.2
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SERVO AND HANDSET ATTENUATORS
Balance. Balancing the servo amplifier is most easily accomplished by two
people. Proceed as follows:
Place the computer in the SP mode. Depress the SERVO pushbutton on the
amplifier balance select panel, located on the MDFG setup panel.
Adjust R20, the balance control on the servo amplifier card (see Figure
5.5), until the monitor meter indicates a null.
Gain Adjustment. To set the servo gain, proceed as follows:
(NULL SENSITIVITY)
Perform the steps in Paragraph 5.6.1.1. Leave the computer in the SP
mode and the AMPLIFIER BALANCE SELECT switch in the SERVO position.
Set the null sensitivity control R13 (Figure 5. 5) to mid-range.
Select any bandset attenuator (P00 to P09) to ensure that the servo output
has no load.
Remove the coax lead to terminal 2 of the 0.51.0200 Servo Control Card
and reconnect to the RDAC output located on the 0.12. 1607 Control Tray.
Care should be taken when removing or replacing
the coax wire to prevent breaking the edge con-
nector.
|.
i
for +9. 0 volts.
_™T. Remove the coax lead from the RDAC output and connect it to ground,
: 8. Using a Hewlett-Packard 130C oscilloscope (or equal) check the servo out-
put voltage, The output should read less than 1 millivolt pk-pk if the gain
control has been properly set. (Note: When measuring the output disregard
- the TDVM clock pulses which appear on the scope. )
9. Remove the coax lead from ground and reconnect it to pin 2 of the servo
- control card.
the gain adjustment.
(..3 Null Sensitivity Adjustment. The sensitivity of the null detection circuit must
4fter the servo gain is completed to assure that the attenuators are set correctly
ystem disconnects properly.
ect one of thé handset attenuators (P00 to P09) and set to +5. 000 volts.
RDAC to 5001, and depress the SET pushbutton.
the sensitivity control, R13 (Figure 5.5), until the red flood is visible
readout display.
R13 until the red flood disappears.
5002 and depress the SET pushbutton. If the sensitivity
t, the red flood should light and remain lit until the
-k the +14 volt levels with
volt fuses on the
SERVO AND HANDSET ATTENUATORS
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CHAPTER 5
If the +14 volt levels are correct, install the 0. 6.0677 Servo Amplifier Card on an extender and
isolate the trouble with an oscilloscope. Apply an input from the POT CONTROL lever while
checking the output section (this requires two people).
If the output section is functioning normally, but the servo fails to set pots with the pushbutton
system, the trouble may be in either the null detection or the pre-amplifier circuit. Assure
that a high Start command appears at pin 13 of the card when the SET pushbutton is depressed
for the second time. Then make point-to-point signal checks to locate the trouble.
| APPENDIX 1
REPLACEABLE PARTS LISTS
This appendix contains Replaceable Parts Lists for the equipment described in this chapter. In
each case, a brief description of the part, the EAI part number and, where applicable, a refer-
ence symbol (schematic designation) is included. To enable a particular sheet to be readily lo-
cated, an index precedes the individual replaceable parts lists.
The category column indicates the availability of each part so that a replacement can be obtained
as quickly as possible,
Category A’ - The parts in category "A" are standard electronic items that are usually avail-
able from any commercial electronic supplier.
Category "B''- The parts in category 'B" are proprietary items that are available only from EAI.
CAUTION
If proprietary items are replaced with items ob-
tained from other sources, EAI cannot assume
vesponsibility for a unit not operating within its
published specifications.
ORDERING INFORMATION
To expedite your order for replacement parts the procedures below should be followed:
i. Specify the EAI part number and description of the part required. The model number and
serial number of the next higher assembly should also be included.
NOTE
EAI is currently revising the part numbering sys-
tem, All parts effected by this revision are iden-
tified using the new and the old number (the number
in parenthesis), All parts should be ordered using
the new number, The old number is provided to
cross reference parts that may still be identified
physically, or in othey publications by that number.
a When ordering complete assemblies (networks, printed circuit cards, etc.), specify the
model and serial numbers of the equipment the assembly is to be used with. If possible,
include the purchase order number or the EAI project number of the original equipment
purchased.
3. When ordering expansion components, note if mounting hardware is required. If hard-
ware is needed, add to the purchase order the statement "INCLUDING MOUNTING HARD-
WARE".
NOTE THAT EAI
TIONS
PARTS LIST INDEX
.
ee ee i 2 2 i see
wee o were eereene
snuator Card
. Pot Mode Relay Card
2rvo Control Card .............--
EPOUC AC Meee cass Sess ose edesecrestes
Pee eee ere ener reese reervrseneccesesece eer eee eves
Page
5-15
5-19
5-19
5-20
5-19
5-21
5-21
5-22
5-22
5-22
5-23
5-23
5-24
5-25
5-26
5-27
RPmrerterermrPerPertrRreteetrRpmerRtrPe wf
EEE
ITEM) REF. DEsic. DESCRIPTION EAI NO. *CAT.
1 |c1,10 Capacitor, Fixed, Ceramic: 00 511.6225-4 | A
2.2 uf +20%, 25V . (00 515.0240-0)
(Sprague 5C15 or equal)
2 C2 Capacitor, Fixed, Plastic: 00 521.1286-0 A
470 nf +10%, 80V
(Sprague 192P4749R8 or equal)
3 C3,4 Capacitor, Fixed, Ceramic: 00 515.0190-0 A
470 nf +20%, 25V
(Sprague 5C11 or equal)
4 1€5,8,12 Capacitor, Fixed, Electrolytic: 00 517.1107-3 A
100 uf +20%, 20V (00 516.0270-0)
(Sprague 150D or equal)
5 C6,13 Capacitor, Fixed, Electrolytic: 00 516.0272-0 A
470 nf +10%, 600V
(Cornell-Dubilier BYZ601ZU471K or equal)
6 C7 Capacitor, Fixed, Electrolytic: 00 517.1476-4 A
47 uf +20%, 35V
(Sprague 150D or equal)
7 c9 Capacitor, Fixed, Electrolytic: 00 517.1106-4 A
10 uf +20%, 35vV (00 516.0385-0)
(Sprague 150D or equal)
C11,14 Capacitor * 00 516.0264-0 B
C15,17,18 |Capacitor, Fixed, Ceramic: 00 515.0180-0 A
’ 20 nf +60% -40%, 150V
(Centralab DDM-203 or equal)
9a 1016 Capacitor, Fixed, Ceramic: 00 511.1121-2 A
120 pf +5%, 200V
(Erie 835 or equal) ;
10 |cR1,2,9 Diode (ITT-G187 or equal) 00 614.0043-0 A
11 |CR3,4,5,6,7 |Diode 00 614.0007-0 B
10,12,13
12 |CR8 Stabistor 00 648.0040-0 B
16 |L1 coil 00 538.0036-0 B
. LABILITY OF PARTS. [UNIT TITLE
B = INDICA TES PARTS THAT SHOULD BE PURCHASED FR ‘ . SERVO AMPLIFIER 1
DESCRIPTION a
sistor: 2N3567 } 00 686.0236-0 A
| Transistor 00 686.0257-0 | 8
_ | oe = ——
Meee alacor 00 686.0229-0 | B
|rransistor: (CE 12A8 or equal) 00 686.0169-0 | A
lieareietor 00 686.0108-0 B
| Transistor 00 686.0165-0 | B
_frranetstor 00 686.0210-0 B
|Transistor: 2N3740 00 686.0310-0 | A
)Resistor, Fixed, Composition: 00 625,0333-0 A
33K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
|Resistor, Fixed, Composition: 00 625.0103-0 A
10K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
|Resistor, Fixed, Composition: 00 625.0302-0 | A
3K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
tor, Fixed, Composition: 00 625.0470-0 A
47 ohms +5%, 1/4W
(Allen-Bradley CB or equal)
stor, Fixed, Composition: 00 625.0100-0 A
llen-Bradley CB or equal)
r, Fixed, Composition: 00 625.0153-0 A
[len-Bradley CB or equal)
‘ixed, peneettion: 00 625.0202-0 | A
dley CB or equal)
ed, Composition: 00 625.0104-0 | A
tion: 00 625.0562-0 | A
T TITLE
SERVO AMPLIFIER
eat 4 Sh.
Sf. 8.8. 4. 8.8. 8. 2..2..8. 6!
ITEM
REF. DESIG.
DESCRIPTION
EAI NO.
*caT.
35 |R12
36 |R13
37 [R14
38 {R15
39 |R16
40 |R18
41 {R19
42 |R20
43 [R21
R22,23
45 |R24
46
“al
[R27, 28
47
Resistor, Fixed,Composition:
910 ohms +5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Variable, Wirewound:
500 ohms, 1W
(Int. Resistance Co. 106-2 or equal)
Resistor, Fixed, Composition:
270 ohns +5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Fixed, Composition:
470K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Fixed, Composition:
4.7K ohms £5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Fixed, Composition:
18 ohms +5%, 1/4W
(Allen-Bradley CB or eqial)
Resistor, Fixed, Composition:
330 ohms +5%, 1/2W
(Allen-Bradley EB or equal)
Resistor, Variable, Wirewound:
200 ohms +5%, 1W
(Int. Resistance Co. Type 106-2 or equal)
Resistor, Fixed, Composition:
3.3K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Fixed, Composition:
470 ohms +5%, 1/4W
(Allen-Bradley CB or equal)
Resistor, Variable, Wirewound:
1K ohms +5%, 1W
' (Int. Resistance Co. Type 106-2 or equal)
Resistor, Fixed, Composition:
2.7K ohms +5%, 1/2W
(Allen-Bradley EB or equal)
‘fResistor, Fixed, Composition:
2.7K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
oo 625.0911-0
00 642.0685-0
00 625.0271-0
00 625.0474-0
00 625.0472-0
00 625.0180-0
00 626.0331-0
00 642.0733-0
00 625.0332-0
00 625.0471-0
00 642.0708-0
00 626.0272-0
00 625.0272-0
+ INDICATES
ee IND!
ee — CATEGORY CO
>LUMN IS DESIGNED TO INDICATE AVAILABILITY OF mantatl \
TS THAT SHOULD B = PURCHASE ic tet cli “
®
ITEM] REF. DESIG. DESCRIPTION EAI NO. CAT.
48 | R29 Resistor, Fixed, Composition: 00 625.0100-0 .
10 ohms +5%, 1/4W
(Allen-Bradley CB or equal)
49 |T1 Transformer 00 684.0220-0 B
50 |T2 Transformer 00 684.0221-0 B
51 |xXD1 Socket, Tube: 9 Contacts 00 650.0075-0 A
(Elco Corp. 05-4008 or equal)
52 |XQ1,2,5,7, |Socket, Transistor: 3 Contacts 00 650.0121-0 A
i 9,10 (Augat 8069-1G1 a@ equal)
' 53 |xXQ3,4,6 Socket 00 650.0162-0 B
if 54 |xQ8 Socket, Transistor: 6 Contacts 00 650.0148-0 A
| (Augat 8058-1633 or equal)
NOTE: THE CATEGORY COLUMN [8 DESIGNED TO INDICATE AVAILABILITY OF PARTS. [UNIT TITLE
; A «INDICATES PARTS THAT SHOULD BE PURCHASED LOCALLY.
@ -INDICATES PARTS THAT SHOULD BE PURCHASED FROM EAI.
SERVO AMPLIFIER
MODEL No.
_baATE 10 /10 ‘67 0.6.0677 Sh.4 of 4 Sh.
ITEM) REF, DESIG. DESCRIPTION EAI NO.
i | 31 Motor 00 594.0085-0
2 | R2 Potent iometer 00 642.0687-0
NOTE
If replacement of either the Servo
Motor (Bl) or the Potentiometer (R2)
is necessary, the entire unit must
be returned to EAI.
00.42.0326 DAS ATTENUATOR CARD
Da ei Capacitor, Fixed, Ceramic: 00 515.0151-0
10 nf +60% -40%, 150vV
(Centralab DDM-103 or equal)
2 | CR1,2 Diode 00 614.0007-0
3 | x1 Relay 00 618.0289-0
4 | RL Resistor, Non-Linear
00 646.0062-0
BES BR RR RR RRR:
*CAT.
B
00 642.0687-0
a
ITE .
Mi REF. DEsic. DESCRIPTION EAI NO, *CaT.
Connector Block: Lettered 00 542.1551-2 B
(DUAL SIN/COS 0.16. 0336)
0.51.0356 READOUT TRAY
1 jcrR1,2 Diode 00 614.0199-0 | B
2 |J1 Connector Block: Yellow 00 542.1545-1 B
3 |R1,2 Resistor, Precision 00 638.1050-2 B
4 |R3 Resistor, Precision _ | 00 638.1050-0 B
Se
— CATEGORY COLUMN IS ORSIGNED To INDICATE AVAILABILITY OF PaRTs. JUNIT TITLE
pee ee INDICATES PARTS THAT SHOULD BE PURCHASED bh
4 a ATES PARTS THAT SHOULD SE PURCHASED FROM EAI. ! D TRA
a = .
- Fan rae EAI NO. *caT.
[i -
|Fuse, Cartridge, Medium Acting: 00 570.0116-0 A
| Lamp, 250v
| (Littelfuse 314001 or equal)
jConnector 00 542.1489-0 | B
' ee Receptacle: 12 Contacts; Female 00 542.1058-0 A
| (Amp 480087-1 or equal)
Joomector, Housing: 16 Cavity 00 542.1430-0 | A
(Amp 582140-2 or equal)
0.11.0212 POT MODE RELAY CARD
<
[Diode (ITT-G187 or equal) 00 614.0043-0 | A
|Relay 00 618.0304-0 | B
00.12.1642 SERVO POWER SUPPLY
NETWORK CARD
fer 00 516.0415-0 | 8
, Fixed, Wirewound: 00 636.0054-0 A
mard 5XM1 or equal)
‘TTENUATOR HOUSING
ni Add
BRererewnrnrtnrnrtvrTrTrFrnrvrTFrnRrpBRprRza 2
1.2K ohms +5%, 1/2W
(Allen-Bradley EB or equal)
ITEM! REF. DESIG, DESCRIPTION EAI NO *CAT.
1 Resistor, Variable, Composition: 00 642.0747-0 | B
5.2K ohms +2%
2 Switch, Sensitive: SPDT 00 662.0046-0 | B
0.51.0281 SERVO CONTROL CARD
1 jcl Capacitor, Fixed, Ceramic: 00 515.0333-0 A
10 nf +20%, 200V
(Vitramon VK33BW103M or equal)
2 jcR1,2,3 Diode 00 614.0007-0 | B
3 |K1 Relay 00 618.0290-0 | B
4 /R1,2,3 Resistor, Fixed, Composition: 00 626.0122-0 | A
rm EAI NO, *CAT.
» Fixed, Film 00 634.0729-0 | A
s +0.1%, 1/2W .
> MFF1/4-T1 or equal)
00 656.0177-0
ad AL
'TEM| REF. DESIG. DESCRIPTION EAI NO *caT. |
1 {Rl Resistor, Fixed, Film: 00 634.0733-0 | A
4 megohms +1.0%, 1/2W
(Dale DCS-1/2 or equal)
2 [R2 Resistor, Fixed, Film: 00 634.0732-0 | A
2 megohms +0.5%, 1/2W
(Dale DCS-1/2 or equal)
3 [R3 Resistor, Fixed, Film: 00 634.0731-0 A
1 megohm +0.2%, 1/2W
(Dale MFF 1/4-T1 or equal)
4 |R4 Resistor, Fixed, Film: 00 634.0730-0 | A |
500K ohms +0.1%, 1/2W ri |
(Dale MFF 1/4-T1 or equal) . |
5 Sl Switch 00 656.0177-0 B
4
*
|
|
|. af
| — DESCRIPTION EAI NO, “CAT.
| lamp1s ifier _ 00 006.0681-2 | B
i -:
Capacitor, Fixed, Ceramic: 00 515.0404-0 A
150 pf +5%, 500V
(Erie 831-000-X5R0-1513 or equal)
Capacitor, Fixed, Electrolytic: 00 516.0270-0 A
100 uf +20%, 20Vv
_ (Sprague 150D107xX0020-S2 or equal)
|switch 00 656.0177-0 | B
DAC W/AMPLIFIER
Sh. 1 of 1 Sh.
z
«
“I
.
a
“
ITEM! REF. DESic,
DESCRIPTION EAI NO. *CaT.
: .
: la Integrated Circuitry: Quad 2 Input Gate 00 $92.0096-0 B
2 {cl Capacitor, Fixed, Electrolytic: 00 516.0425-0 A
2.2 uf +20%, 15V
(Kemet K2RC15 or equal)
3 |c2 Capacitor, Fixed, Ceramic; 00 515.0151-0 A
0.01 uf +60% -40%, 150V
(Sprague 19C385 or equal)
4 |R1 Resistor, Fixed, Composition: 00 625.0102-0 | A
1K ohms +575 1/4W 2
(Allen-Bradley CB or equal)
5 |R2 Resistor, Fixed, Composition: 00 625.0512-0 | A
5.1K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
6 $1 Switch 00 656.0180-0 B
APPENDIX 2
DRAWINGS
This appendix contains necessary schematics and wiring diagrams of equipment described in
this manual. To facilitate locating a particular sheet, an index is provided that lists the model
number of each unit or component, the type of drawings, and the associated drawing number.
column.
The drawings are bound into the manual in the order listed under the index Drawing Number
EAI drawings are prepared in accordance with standard drafting practices for electro-mechani-
cal and electronic equipment. All symbols are in accordance with current government stand-
| ards.
INDEX
Unit or Component Type of Drawing
6.677 Servo Amplifier Schematic
0. 11.0212 Pot Mode Relay Schematic
0.12. 1642 Servo Power Supply Schematic
Network
42, 327 DAS Attenuator (Switching) Schematic
0. 42.0338 Handset Attenuator Assembly
0. 51. 0288 Servo Control Schematic
0. 51.0361 DAC Control Schematic
0. 51.0362 DAC W/Amplifier Schematic
: 0. 51. 0364 Set-Clear Card Schematic
Drawing Number
D006 677 OS
BOO 011 0212 0S
AOO 012 1642 0S
C042 327 0S
BOO 042 0338 0A
BOO 051 0288 0S
C00 051 0361 0S
C00 051 0362 0S
BOO 051 0364 OS
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