EAI 580 Console Handbook — Chapter 4: Readout Selector System
Dibba & za i a
CHAPTER 4
READOUT SELECTOR SYSTEM
4.1 INTRODUCTION
The readout selector system provides a simple means of reading out voltages of the analog
components and addressing the servo attenuators for setting. (The servo attenuator system is
described in Chapter 5 of this handbook. )
The readout selector system consists of the 0. 51.0359 Address Select Card, two each 0, 51.0360
Units and tens select cards and a 0.11.0213 Select Mother Card. The address select card and
the units and tens select cards are mounted on the 0. 9.0050 Keyboard with their respective
pushbuttons available at the front of the keyboard (Figure 4.1). The select mother card is
mounted in the center of the console frame and is accessible from the rear of the computer
(Figure 4, 2).
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ADDRESS SELECT/
SWITCHES
Figure 4.1. Location of Address Select Switches
Table 4.1 identifies and describes the functions of the switches associated with the address
select card. w
The 0. 51.0360 Units and Tens switches are used to select the particular unit that is to be read
out, The first column of numbers is the ten position, while the second, or right,
CHAPTER 4 READOUT SELECTOR SYSTEM
MOTHER CARD
=
Figure 4.2, Location of Select Mother Curd
4.2 CIRCUIT DESCRIPTION
=)
This paragraph contains the descriptions of the individual switchi .
ing circuits associated wi
with the |
readout selector system. Each circuit is described in a separate paragraph ;
simplified schematic of the overall system. po. Figure 4,3 is a
7
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-
| 4-2
|
CHAPTER 4
READOUT SELECTOR SYSTEM
Table 4.1 Address Select Mode Functions
Pushbutton Function
DIG I/O Depressing this pushbutton transfers control of the readout
selection system to a digital computer when the 580 is in-
stalled in a hybrid configuration.
PP This pushbutton is used to connect the DVM patch terminal on |
the 0. 12.1607 Control Tray to the DVM input.
F Depressing this pushbutton allows the amplifiers located in | ij
the 0.12. 1345 MDFG Amplifier Network to be balanced on the <
DVM. 5
D This pushbutton is used for a derivative readout from the
summing junctions of the integrators and track/store units.
D/10 Same as the D (derivative) pushbutton except that in voltage
readout is divided by a factor of 10. |
P The P (potentiometer) pushbutton connects the arm of the
potentiometer addressed to the VM and DVM.
A The A (amplifier) pushbutton when depressed switches the
output of the selected amplifier or MDFG setup amplifier
to the DVM input.
4.2.1 Digital I/O Switch Circuits
The digital I/O (DIG I/O) switch is used in conjunction with an interface chassis when the 580
is connected with a digital computer in a hybrid configuration. As indicated in Figure 4.3,
depressing the DIG 1/O switch transfers control of the readout selector system from the 580 to
a digital computer connected through the interface chassis. This switch should not be used
unless the 580 and a digital computer are connected in a hybrid configuration.
4.2.2 PP (Patch Panel) Switch Circuit
Depressing the patch panel (PP) pushbutton switches the DVM input to the DVM patch terminal
on the 0.12, 1607 Control Tray.
A second set of contacts connects -20 volts to the units and tens selector switches, allowing
the selection of units for readout purposes. When the PP pushbutton is depressed, readout of
stabilizers is an automatic process. To readout amplifiers it is necessary to connect the DVM _
patch terminal to the A SEL patch terminal located on the control tray. :
READOUT SELECTOR SYSTEM
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INTERFACE
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4.2.3 F Switch Circuit
The F switch circuit, in conjunction with the balance switches, located on the 0. 12.1345 MDFG
Amplifier Network, is used for balancing the MDFG amplifiers. When the switch is depressed,
the output of the balance switches on the MDFG amplifier networks is switched to the DVM in-
put. To balance an amplifier it is necessary to close the balance switch associated with the de-
sired amplifier connecting the output through the F switch to the DVM output.
| A second set of contacts on the F pushbutton connects -20 volts to the units and tens selector
Switches. Since the stabilizers are read out on the VM, it is possible to select a stabilizer and
consequently balance an amplifier while in the F address mode.
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NOTES: TENS SELECT
1. RELAY K1 AND D SWITCH SHOWN ENERGIZED.
2. SELECTOR RELAYS DELETED FOR CLARITY.
Figure 4.4. Derivative Switch Circuit, Simplified Schematic
4.2.4 D (Derivative) Switch Circuits
metre) pushbutton is used to read out the sum of the voltages applied through the in-
ssociated with the integrator and track/store units (Figure 4, 4),
2 voltage at the input to the integrators and the track/store units the 580
>
c test) mode. In this mode, relay K1 is energized and the sum of the
5 on the D switch. The D switch, when closed, connects the de-
0.26, 0268 Digital Voltmeter. Closing the D switch
READOUT SELECTOR SYSTEM
—— |
1
jo
CHAPTER 4
also connects pins 7 and 8 together grounding one end of the DVM 100K input resistor. —
third section of the D switch connects -20 volts to the units and tens select switches prov
for the addressing of the desired unit.
4.2.5 D/10 (Derivative Divided by 10) Switch Circuits
The D/10 switch circuit is similar in operation to the D switch except that a fourth switch po-
sition is used (pins 1, 2, and 3) to connect resistor R1-3 (Figure 4.5) in parallel with the feed-
back resistor (R1-4) of DVM amplifier A. The additional resistance reduces the gain of ampli- — 7
fier A by a factor of 10.
D/IO
PART OF:
0. 26.0268 DIGITAL VOLTMETER
INT OR
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TO UNITS AND
TENS SELECT |
Figure 4.5. D/10 Switch Cireuit, Si
2 2a
READOUT SELECTOR SYSTEM
w of the
_ When the P pushbutton is depressed, contacts 7 and 8 (Figure 4. 3) connect the arm =
om
potentiometer to the DVM input. Contacts 5 and 6 also connect the arm of the poten vate
hia : Be
_ through the VM FUNCTION switch (P SEL position) to the input of the VM. The VMr
: d 11 switch
potentiometer when the RANGE switch is in the NULL position only. Contacts 10 an
-20 volts to the units and tens select unit,
4.2.7 A (Amplifier) Switch
The A (amplifier) switch utilizes one set of contacts to connect the amplifier being read out to
the DVM input. A second set of contacts connects -20 volts to the units and tens select switches
to permit the addressing of amplifiers,
ch contacts 5 and 6, when closed, provide an input to the DVM (Figure 4.3). Depending on
state of the relay shown in the MDFG setup circuit, the MDFG setup amplifier or the ampli-
select line (A SEL) is read out by the DVM. The A SEL line is connected through a series
s to the output of the addressed amplifier. For a description of the MDFG setup ampli-
lout relay see Chapter 10 of the 580 Computing Components Handbook (Publication
10 800. 2057-0).
1 set of contacts (10 and 11) provide -20 volts to the units and tens select switches to
e addressing of the desired amplifier.
2.8 Address Select Circuit
-
ress select circuit consists of two Model 0. 51.0360 Units and Tens Selector printed cir-
an 0. 11.0213 Select Mother Card including four 0.12. 1646 Am
stabilizer Select cards, and the DAS Attenuator Panel.
on the right side of Figure 4, 3.
plifier Select cards
The address Select
-20 volts to both of the units
mply depress the pushbutton
‘hbutton, representing the
c
HAPTER 4 READOUT SELECTOR SYS
units digit in the right-hand column. For example, addressing the component in position 19
is accomplished by depressing pushbutton 1 in the left column and pushbutton 9 in the right-
hand column. Since any address must contain two digits a zero is assumed to precede any
Single digit address, i,e., component 8 is addressed as 08.
Once the proper pushbuttons have been depressed, relays on the select mother card and on the -
attached amplifier and stabilizer select cards are energized and the addressed unit is selected
for readout. As an example, using the select circuits on the rightside of Figure 4.3 and the
typical circuits at the lower left of the figure, amplifier 00 is addressed. Depressing unit
pushbutton 0 selects relay KO on the select mother card. Depressing tens pushbutton 0 activates
K1 and K2 on the stabilizer select card and relays Kl, K2, and K6 on the amplifier select card.
The combination of relays KO and K2 on the amplifier select cards connects amplifier 00 to
the A SEL line as shown on the typical amplifier circuit. Depressing pushbutton A connects the
A SEL line to the DVM as described in Paragraph 4.2.7. The same address (A00) also con-
nects the stabilizer of the selected amplifier through relay KO and relay K2 on the stabilizer
select card to the VM.
The potentiometer readout relays are connected in a type of grid or matrix circuit. The units
select switches select a row by placing a voltage on one end of each relay in the row coinciding
with the pushbutton that has been depressed. The tens select switches select a column by
grounding one end of each relay in the column coinciding with the pushbutton that has been de-
pressed. The relay at the point the selected row and column cross is energized. The contacts
of the relay, when closed, connect the arm of the selected potentiometer through contacts 7
and 8 of pushbutton P to the DVM. i
The address select circuits can also be controlled by a digital unit through an interface chassis
when the 580 is connected in a hybrid configuration.
With the DIG I/O switch depressed, the -20 volts normally applied to the address select switches
is connected to the interface chassis. When the desired address has been selected, the -20 vc
is applied through the interface chassis to the proper position, for the desired address on the _
r,
to ensure that the external -20 volts is not fed into the address select system.
4,2.9 The VOLTMETER (VM) Circuit
The VOLTMETER (VM), Figure 4.6, located in the monitor panel ates dire
DVM readout display, consists of a Model 0. 13.0046 O A
and a RANGE switch. The overload portion of
a a -
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T OF: 0.12.1607
, CONTROL TRAY
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Figure 4,6, Null Circuit, Simplified Schematic
1odes of the VM are selected by the FUNCTION switch located on the lower right of the
Table 4.2 describes each FUNCTION switch position.
Table 4,2 Descriptions of FUNCTION Switch Positions
READOUT SELECTOR SYSTEM
Function
Disconnects VM input.
Connects VM to the VM patch terminal on the 0.12. 1607 Control Tray.
Connects the VM to the stabilizer of a selected amplifier for balancing.
Connects the VM to the stabilizers of the set-up and time base amplifi-
ers and the servo amplifier output located in the MDFG drawers.
-Connec the vM to the input of the servo amplifier used with the.servo
1e VM to the -relay bus.
the -10 volt reference bus,
e +5 volt bus,
|
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CHAPTER 4
:
The 30, 10, 3, 1, .3, and.1 positions on the RANGE switch are used to heat t
by connecting precision resistors between the voltage input and the VM. Th
provides circuitry (Figure 4.6) to accurately set voltages in the absence of a DVM.
for setting voltages using the nulling method is given below.
Place the FUNCTION switch in the PP position.
2. Place the RANGE switch in the NULL position.
3. Patch the voltage to be adjusted to the VM patch terminal on the 0. 12. 1608
Tray.
4. Select the desired voltage value using the RDAC pushbuttons,
Complete the procedure by adjusting the voltage patched to the VM terminal
voltmeter indicates a null point (0 volt). ;
| ; 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.
If proprietary items are replaced with items ob-
tained from other sources, EAI cannot assume
responsibility for a unit not operating within its
published specifications.
ORDERING INFORMATION
To expedite your order for replacement parts the procedures below should be followed:
ie 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
EAT 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 other publications by that number.
2) When ordering complete assemblies (networks, printed circuit cards, etc.), sp
model and serial numbers of the equipment the assembly is to be used with. If
include the purchase order number or the FAI project number of the origina
purchased.
S' When ordering expansion components, note if mounting hardware is requ
ware is needed, add to the purchase order the statement "INCLUDIN
WARE".
NOTE THAT EAI RESERVES THE RIGHT TO.
| EN REQUIRED. EAI G'
PARTS LISTS INDEX
Title
| Select Mother Card ......... Jnl 6 Sgn HeU SUE Scania cabo sat
Select Amplifier Network Card ..... Be och ch cansen cn lnoc oc Heenan
boa?) Select Stabilizer Card ...........seeeeec0e isle p§eibssaunengeemnec
).1180 Monitor Panel ....... PE er, Slee eulls Tiare teeete Pimtefels plsls erslnye wie «088 eae
0.13.0046 Voltmeter Card ........ cece ccs cece eee ence en errnccceeeeecees
Address Select Card .......ccccecccceccccesscces ssp DO GbE CL eo
| Units and Tens Select Card .......cccccces ec cccenscetcccecsereseres
Page
4-15
4-16
4-17
4-18
4-19
4-21
4-22
ITEM] REF. DEsic. DESCRIPTION EALNO.
1 | CRI thru 10 Diode 00 614,0293-0
2 KO,1,8,9 Relay: 18 VDC, 520 ohms Coil, 4 Form C 00 618.0171-0
Contact (Allied Control T-154-4c-520
or equal)
3 K2 thru 7 | Relay: 18 VDC, 520 ohms Coil, 6 FormA 00 618.0172-0
Contacts (Allied Control T-154-6A-520
or equal)
4 Ql thru 8 | Transistor: 2N3638 00 686.0250-0
a R1,3,5,7, | Resistor, Fixed, Composition: 00 625.0103-0
9,11,13,15 10K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
| 6 R2,4,6,8, | Resistor, Fixed, Composition: 00 625.0271-0
10,12,14, 270 ohms +5%, 1/4W
| 16,18,20 (Allen-Bradley CB or equal)
} 7
Socket, Relay: 16 Contacts
(Allied Control 30055-4 or equal)
00 650.0133-0
DESCRIPTION EAI NO.
| Diode (ITT - G187 or equal) 00 614.0043-0
| Relay: 18V, 520 ohms Coil, 6 FormA Contact | 00 618.0172-0 A
(Allied Control T-154-64-520 or equal)
Relay; 18V, 520 ohms Coil, 4 Form C Contact 00 618.0171-0 =
(Allied Control T-154-4C-520 or equal)
Resistor, Fixed, Composition: 00 625.0331-0 A
330 ohms +5%, 1/4W ,
(Allen-Bradley CB or equal)
| Socket, Relay: 16 Contacts 00 650.0133-0 A
(Allied Control 30055-4 or equal) |
_ SELECT AMPLIFIER
_ NETWORK CARD
[: : = _
BH
1646 Sh.1 of sto. ri
a XK1,2,3,4
Socket, Relay: 16 Contacts
(Allied Control 30055-4 or equal)
NOT €: THE
ae
CATEGORY COLUMN !5 DESIGNED TO INDICATE AVAILABILITY oF Sa etiay UNIT
_ INDICATES PARTS THAT SHOULD BE PURCHASED LOCALLY.
Bs -INDICA TES PARTS THAT SHOULD BE PURCHASED FROM EAI.
ITEM] REF. DESIG. DESCRIPTION EAI NO. *CAT.
h =| cRr1,2 Diode (ITT-C187 or equal) 00 614.0043-0 A
RP =1K1,2,3,4 |Relay: 18V, 520 ohms Coil, 6 FormA Contact | 00 618.0172-0 | A
(Allied Control T-154-6A-520 or equal)
B R1,2 Resistor, Fixed, Composition: 00 625.0331-0 A
330 ohms +5%, 1/4W
(Allen-Bradley CB or equal)
| 00 650.0133-0 | A
DESCRIPTION
EAI NO,
*CAT.
i
ee ce Or Module
|Connect or, Plug: 12 Contacts; Male
(Amp 480088-1 or equal)
|Meter
Potent iometer
\Switch, Rotary; 3 Pole, 1-12 Positions
(Centralab PA2009 or equal)
Iswitch
a
IF
.
00 542.1059-0
00 590.0055-1
00 642.0701-0
00 658.0011-0
00 658.0197-0
Livy OF Panta. [UNIT TITLE
MONITOR PANEL
ITEM! REF. DESIG, DESCRIPTION EAI NO, *cat. |
1 {cl Capacitor 00 516.0387-0 B
2 C2 Capacitor, Fixed, Ceramic: 00 515.0249-0 A
220 nf +20%, 25V
(Mucon 21984-9 or equal)
7, | CRL,2 Diode 00 614.0007-0 B
4 | Ls Loudspeaker: 2.5 KC 00 582.0007-0 A
(Mallory (Sonalert) SC628 or equal)
5 | Ql Transistor: 2N3638 00 686.0250-0 A
6 | Q2 Transistor: 2N3638A 00 68630305-0 A
7 R1 Resistor, Variable, Wirewound: 00 642.0685-0 A
500 ohms +5%, 1W
(Int. Resistance Co. 106-2 or equal)
8 R2 Potent iometer 00 642.0719-0 B
9 R3 Resistor, Fixed, Composition: 00 626.0102-0 A
1K ohms +5%, 1/2W ;
(Allen-Bradley EB or equal)
10 | R4 Resistor, Fixed, Film: 00 634.0707-0 A
1K ohms +1%, 1/4W
(Intl. Resistance Co. CEB-TO or equal)
11 } R5 Resistor, Fixed, Film: 00 634.0096-0 A
4K ohms +1%, 1/2W ‘
(Weston Inst. 9852B or equal)
12 R6 Resistor, Fixed, Film: 00 634.0097-0 A
18K ohms +1%, 1/2W sk
Weston Inst. 9852B or equal) |
13 | R7 Resistor, Fixed, Film: 00 634.0098-0 | A
58K ohms +1%, 1/2W ;
(Weston Inst. 9852B or equal)
14 | R8 Resistor, Fixed, Film: 00 634.0064-0
198K ohms +£%, 1/2W
(Weston Inst. 9852B or equal)
15 | R9 Resistor, Fixed, Film: 00 634.0099-0
598K ohms +1%, 1/2W ;
(Weston Inst. 9852B or equal)
Prote: THE CATEGORY Shieh Leenienia= TO INDICATE AVAILABILITY OF = UNIT
Ae ane PARTS THAT SHOULD BE. Pancnaan? te Fog an %
1.5K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
= jE EAI NO. *CAT.
: DESCRIPTION
|. Si arias -0103-0 A
| Resistor, Fixed, Composition: 00 625
| 10K ohms +5%, 1/4QW
(Allen-Bradley CB or equal)
1. ) 625.0822-0 A
| Resistor, Fixed, Composition: po lh 2250
8.2K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
-0 A
| Resistor, Fixed, Composition: 00 pees 0153
15K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
- A
Resistor, Fixed, Composition: ; 00 625.0152-0
VOLIMETER CARD
so Ty —
ITEM] REF. DESIG. DESCRIPTION EAI NO,
1 cl Capacitor, Fixed, Ceramic: | 00 511.5223-4
22 nf +20%, 25V ~
(Sprague 3C9 or equal) 00 ae
2 [ps1 Lamp, Incandescent: 28V, 40 MA; 00 578.0089-0
Clear T-1-3/4 Bulb
(Hudson 369 or equal)
3 {Ql Transistor: 2N3638A 00 686.0305-0 A
4 1R1,2 Resistor, Fixed, Composition: 00 625.0472-0 A
4.7K ohms +5%, 1/4W .
(Allen-Bradley CB or equal)
5 |R3 Resistor, Fixed, Composition: 00 625.0103-0 A
10K ohms +5%, 1/4W
(Allen-Bradley CB or equal)
6 |Sl-() Switch, Pushbutton 00 656.0177-2 B
' = es eee ie el is ee
HE CATEGORY COLUMN IS DESIGNED TO INDICATE AVAILABILITY.
a - INDICATES PARTS THAT SHOULD BE PURCHASED LOCALLY. ~
» -INDICATES PARTS THAT SHOULD BE PURCHASED FROM EAI,
NOTE: T
Piode (ITT-G187 or equal)
Switch
= eae he
DESCRIPTION EAI NO. *CAT.
00 614.0043-0 A
00 656.0177-0 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. — =i
The drawings are bound into the manual in the order listed under the index Drawing Number i
column. -
al |
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 Drawing Number
0. 9.0050 Keyboard Panel Wiring C00 009 0050 OW
(Sheets 1, 5, and 6 o
0. 11.0213 Select Mother Card Schematic DOO 011 0213
(Sheets 1 and
iE
0.20. 1180 Monitor Panel Schematic 020
Wiring
0. 51.0359 Address Select Schematic
0. 51,0360 Units and Tens Select Schematic
2251.0 36T-/
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QOS. A36l
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9.081 0362
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a
O.L1B. 73 9S
2.084 2259
2.0(8./394
= 5
=
7: aioe
2.018. 139@
ih
cad
0.51, 0363-1
(WSLLDES: Boe 1393.
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