EASE Computer Installation Instructions
INDUSTRIAL AND NUCLEAR INSTRUMENTS
ANALOG COMPUTERS
Berkel e ydorscon
BECKMAN INSTRUMENTS, INC. .
2200 WRIGHT AVE., RICHMOND, CALIF.
TELEPHONE: LANDSCAPE 6-7730
WARNING
| Do not attempt to operate this instrument
until you have read the Instruction Manual.
EASE Computer
I INSTALLATION
INSTRUCTIONS
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-) Beckman Instruments Inc. 16 August 1955
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Installation
GENERAL
All computer components are rack-mounted in one or more cabinets,
The cabinets are fitted with casters which may be removed after the
racks have been rolled into position, Cabinets may be arranged in
any order provided that the inter-connecting cables have been cut to
the proper length. Allow some air space at the rear of the cabinets
for ventilation and install them in a room that is generally well-ven-
tilated, .
Ordinarily, cable connections between components in the same cabinet
will have been completed at the factory, Connections from the power
line to the computer and connections between cabinets must be made
at the installation site. These connections consist of:
1, A common ground bus between cabinets,
2. Connections from the power line to each cabinet and from the
power control unit in the base of the control unit cabinet to
similar units in other cabinets,
| 3, Other connections between cabinets consisting mainly of input
and output connections from the control unit to each of the
operational components,
GROUND CONNECTIONS
To attach the ground bus, slide the copper ground clamps onto the large
bare copper cable. String the cable along the rear of the cabinets and
screw a ground clamp to the end of each copper ground strap which protrudes
from the rear of the cabinets, Then tighten the clamps on the cable,
Installation -1
LINE POWER CONNECTIONS
To supply line power to, the computer connect a source of 115 volt a-c
power to the socket at the rear of each cabinet, The cabinet holding the
control unit will not draw more than 7 amperes. Each of the other
cabinets may draw as much as 20 amperes. The line voltage at the input
to each cabinet should not drop below 105 volts nor rise above 125 volts,
A line power control anit occupies the base of each computer cabinet,
This unit provides a means of energizing the filament supplies through-~
out the cabinet independently of the plate supplies. The unit connects
115 volt a-c power to the sockets spaced along the vertical strip inside
the cabinet, Line power for filament supplies appears at the sockets
labelled "FIL" or 'FIL REG", Power for plate supplies appears at
the sockets labelled "PLATE", The power control unit also connects
line power to a terminal strip at the bottom rear of the cabinet, This
strip is used to interconnect the unit in the control unit cabinet with
those in the other cabinets,
Figure 1 is a schematic diagram of the power control system in the con-
trol unit cabinet, This cabinet contains an automatic time delay switch
which prevents power from reaching the plate sockets until the filament
power has been applied 30 seconds, Closing the FILAMENT switch
starts the time delay motor which closes a switch after 30 seconds, This
switch applies the line voltage across the PLATE switch and relay and
across the plate relay control terminals on the inter-cabinet connection
strip,
Installation -2
r 7 (C4 - potty po co }
-——
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115VAC
115VAC
Fused
Filament
Plate
Relay
Control
Plate
ay an on Ho" TN
115VAC INPUT
ap
FAN PLATE
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30A 30A |
® _— Fuses —" l
| FIL
010 , Front |
Utility 7 Panel l ei 4
Outlets
20 \
? ay Rear |
O3 RY Panel |
j | FIL
040) ° FILAMENT fe) |
va ~~~ 3witeh | Ci Oe
O5
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o 80 Green (2) Indicator |
070 “ t
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O98 |
Time |
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i PLATE
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0120 6 |
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Wy § came |
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va Plate Relay f | PLATE
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Red ay Indicator
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INTER-CABINET
CONNECTION
STRIP
Figure 1
CONTROL PLATE & FILAMENT
UNIT SUPPLY SOCKETS
Line Power Control System
Control Unit Cabinet, Model 1187
Installation -3
a
Figure 2 is a schematic diagram of the power control system in the other
cabinets, This system differs from that in the control unit cabinet in that
it lacks a time delay switch, 115 volts a-c must be brought to the plate
relay control terminals to energize the plate relay, If you wish to supply
power to this cabinet independent of the control unit cabinet, simply con-
nect the plate relay terminals to the filament supply terminals; that is,
terminal 7 to terminal 5 and terminal 8 to terminal 6, So connected,
power reaches the plate sockets as soon as both FILAMENT and PLATE
switches are closed, When applying power you must be careful to close
the FILAMENT switch first and wait 30 seconds before closing the PLATE
switch, On the other a hand, you may take advantage of the automatic time
delay in the control unit cabinet by connecting the computing cabinet to that
circuit, To do this, connect the plate relay control terminals to the plate
terminals in the control unit cabinet -- terminal 7 to terminal 9 and ter-
minal 8 to terminal 10, So connected, the plate relay contacts in the con-
trol cabinet are in series with the plate relay coilin the other cabinet, and power
cannot reach the PLATE sockets in any cabinet until 30 seconds after the
FILAMENT switch on the control unit cabinet has been closed, All the cab-
inets in the computer installation may be connected to the control cabinet in
this way, If you do this, the PLATE switch on the control cabinet becomes
the master plate on-off switch for the entire computer and all other PLATE
switches may be left permanently closed, When applying power you must be
careful to close the FLLAMENT switches on the other cabinets before closing
the one on the control cabinet,
Cabinets holding one or more Model 1041 Operation Amplifier Units contain
a voltage regulating transformer for each unit, These transformers are
located in the base of the cabinet near the power control unit, A line from
the primary winding of each plugs into a socket carrying unregulated fil-
ament power, and a line from a FIL REG socket plugs into a socket on the
transformer which is connected to the secondary,
Installation-4
|
' 115VAC INPUT
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INTER-CABINET
ion CONNECTION
| STRIP
|
PLATE & FILAMENT
SUPPLY SOCKETS
POWER CONTROL UNIT
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7 OF | FAN
tl 1 OD | ow
O) | REG
é + Fuses _ | FIL
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115VAC |
4 020 |
; f i 0 } Front L | FIL
= Panel
115VAC Os Utility | P
Fused Outlets a,
aad 040 r Rear > | E
> Panel | Aad
O5 ]
Filament } | FIL
J . (olne: ——~— FILAMENT _ o_o |
Switch ft | d
_ Plate 12) TK
Relay ]
ontrol 080 6 Green { Q ) Indicator o | WIL
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| Plate | Pik
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Ono 4 l +f OY ATE
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Switch {
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Plate Relay |
‘Regulating |
() Onormer | ,
. One for each
Red Indicator Model 1041 | PLATE
7 war in cabinet) q
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_. Figure 2 Line Power Control System
Operational Component Cabinet, Model 1185
Installation -5
OTHER CONNECTIONS BETWEEN CABINETS
The text and diagrams on the following pages describe all necessary
cable connections to each of the computer components. Most of these
connections will be completed when you receive the computer since
they link components in the same cabinet, Connections which must
be made at the installation site consist. mainly of input and output
connections from the control unit to the various operational com-
ponents,
Each power supply will provide d-c voltages for several combinations of
operational components, The number of each type of component connected
to a specific power supply differs from one installation to another, The
best arrangement is that which takes full advantage of the load capacity
of the power supply. The instructions for connecting each component
specify the power supply to which it must be connected and list the cur-
rent it draws at each d-c voltage, The output capacities of the power
supplies and the d-c requirements of all the operational components are
listed together in table on opposite page.
Installation -6
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D-C LOAD | COMPONENTS
POWER VOLTAGES CURRENT USING POWER VOLTAGES CURRENT
SUPPLY GENERATED CAPACITY SUPPLY REQUIRED DRAIN
Model +250v 0 to 300 ma 1041 +250 235 ma
Operational
1011 -250v 0 to 150 ma* Amplifier -250 90 ma
unit with
-465v 0 to 55 ma ten 1048 ~465 45 ma
Amplifiers
1072 +250v 20 ma
Set-up Unit ~250v 5 ma
(for 1071) -465v 5 ma
1071 +250v 40 ma
Function -250v 12 ma
Generator ~465v 9ma
1070A +250v 22 ma
Function
Generator ~250v 22 ma
1032 +250v 15 ma
Control Unit
Model 1010 +400v 125 to 300 ma 1051 +400v 14 ma
Multiplier
-400v 125 to 300 ma | Panel -~400v 17 ma
(excluding
multipliers)
1056 +400v 52 ma
Multiplier -400v 44 ma
1070 +400v a2ma
Function
Generator -~400v 22 ma
Model +100v 0 to 150 ma 1032 +100v 15 ma
Control Unit -100v 15 ma
1015 -100v 0 to 150 ma
1072 Set- +100v 12 ma
up Unit (for
1071) ~100v 12 ma
1071 +100v 10 ma
Function
Generator -100v 10 ma
* The Model 1011 will supply 200 ma at -250v if no current is drawn from the -465v
Notice that the Model 1070A does not require a -465 voli supply.
output.
Installation - 7
Model 1041 Operational Amplifier Unit
All necessary cable connections to this unit are shown in figure 3.
One Model 1011 customarily supplies d-c voltages for one Model 1041
containing ten Model 1048 amplifiers and may, in addition, supply
two Model 1070A Function Generators or one Model 1071 Function
Generator. Under normal amplifier output loads, a Model 104]
with ten amplifiers will not draw more than 235 ma at +250 volts,
90 ma at -250 volts and 45 ma at -465 volts, The Model 1011 will
provide 300 ma at +250 volts, 150 ma at -250 volts and 55 ma at
-465 volts.
J- REAR LIP OF MODEL 1041
EOL
SIG. GND. REG ll7V UNREG 117V
POWER ylo2 POWER POWER
( ) SIG CABLE
Jumper \
+250, -250
& -465 volt —~| 28~conductor cable
supplies To ground stri
pp 6 P To "FIL" socket
Y To "FIL REG" socket on cabinet
To 1032 Control Unit on cabinet
To 1011 Power Supply " tt
J104-or J106 AMPLIFIER" socket
°
Figure 3
The Model 1051 Multiplier Panel,
All necessary cable connections to this unit are shown in figure 4, D-C
power at +400 and -400 volts is supplied by a Model 1010 Power Supply.
One Model 1010 customarily supplies a panel with four Model 1056 Multi-
pliers and may, in addition, supply as many as three Model 1070 Function
Generators, The current drawn by the Model 1051 varies with the number
of multipliers it holds,
Installation -8
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Number of multipliers
in Model 1051 Panel Current Drain
At +400 volts At -400 volts
i
4 222 ma, 193 ma,
3 170 ma, 149 ma,
2 118 ma, 105 ma,
1 66 ma, 61 ma,’
The current drain from each voltage source on the Model 1010 must be at
least 125 ma and no more than 300 ma, Notice that if the Model 1051
panel contains fewer than 3 multipliers, some other load must be placed
on the power supply,
f-~* LIP OF MODEL 1051
AC DC
INPUT INPUT
J505 (on)
~——— 13-conductor cable |
To 1010 Power Supply
Y "+ 400V" socket
To 1032 Control Unit To "FIL REG" socket
"MULTIPLIER" socket on cabinet
es
Figure 4
Installation-9
Models 1070 and 1070A Function Generators
All necessary cable connections to either of these units are shown in
figure 5, The only difference between the models is that the Model
1070 requires d-c voltages of +400 and -400 volts while the Model
1070A operates on +250 and -250 volts.
Bach Model 1070 draws 22 ma at +400 volts and 22 ma at -400 volts
from a Model 1010 Power Supply. The current drain on the Model
1010 must be between 300 and 125 ma at each voltage, Therefore,
the Model 1010 will supply as many as 13 function generators but no
less than 6 function generators unless some other load is also draw-
ing current, Three Model 1070's may be supplied from a Model 1010
which is also supplying a Model 1051 Multiplier Panel containing 4
Multipliers, If necessary, you may procure a dummy load from the
factory.
{
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+400V INPUT
{ XL REAR LIP OF MODEL 1070 or 1070A
{
Internally Y
bussed
J701
+400V INPUT FUNCTION GENERATOR
J702 OUTPUT
O FILAMENT INPUT
Veo "PIL REG" socket 4-conductor cable ————-______»|
on cabinet |
¥ ic 1070 to 1010 Power Supply, "#400V" socket To 1032 Control Unit
If 1070A to 1011 Power Supply, J105 or J106 "FUNCT. GEN" socket
NOTE: The Model 1070 operates on d-c voltages of +400 and -400 volts
obtained from the 1010 Power Supply
The Model 1070A operates on d-c voltages of +250 and ~250 volts
obtained from the 1011 Power Supply.
Figure 5
Installation -10
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Each Model 1070A requires 22 ma at +250 volts and 22 ma at -250 volts,
These requirements are met by the Model 1011 Power Supply which will
deliver 0 to 300 ma at +250 volts and 0 to 200 ma at -250 volts if its
~465 volt source is not loaded, Consequently, one Model 1011 will supply
9 function generators or 2 function generators plus a Model 1041 Operat-
ional Amplifier Unit containing ten amplifiers,
Model 1071 Function Generator with Model 1072 Set-up Unit,
The Model 1072 Set-up Unit and the Model 1071 Function Generators it
serves (as many as 10) form an interconnected system, Figure 6 shows
all necessary cable connections to a set-up unit with two function gen-
‘erators, Additional function generators are connected in the same way.
REAR LIP OF MODEL 1071 ~\ ,_ Internally bussed
\. FIL
J106 S104 020 poms 103 Ce
J105 J101
To "FIL"
socket
f on cabinet
y
watt.
To 1032
Control
Unit
"FUNCT. GEN"
socket
-O
j~~——- 29-conductor
See Note 2 cable See Note 1
REAR LIP OF MODEL 1071 ~\ [__mernally bussed
‘ A FiL
J106 qf -7™NL 5103 O
J104 J102 x 105 101 —
< To "FIL"
socket
To 1032 on cabinet
Control Unit |
"FUNCT. GEN" | |
socket I t
| 1
See Note 2 See Note 1
Infernal’ 29-conductor
REAR LIP OF MODEL 1072 ™"\ busse: | cable
FIL
04 pes 5105 O-+e
J101 S J102 J103 To "FIL"
socket on
Figure 6 cabinet
met250, -250 and
~<«— +100 & -100 volt supplies -465 volt supplies
To ground strip To 1015 Power Supply To 1011 Power Supply
4-terminal Varicon socket J205 or J206
NOTES: 1. D-C voltages from the 1011 Power Supply may be introduced
at J102 on the set-up unit or at J105 on any one of the
function generators.
2. D-C voltages from the 1015 Power Supply may be introduced at Installation -ll
J101 on the set-up unit or at J104 on any one of the function generators.
a |
The system procures d-c voltages of +100 and -100 volts from the Model
1015 Power Supply. The set-up unit draws .12 ma at each of these voltages,
and each function generator consfmes about 10 ma at each voltage, The
~Model 1015 will provide from 0 to] 150 ma at each voltage. Customarily one
Model 1015 supplies: a ‘Set-up unit and as many as 10 function generators and,
_in addition, supplies reference voltages for the control unit. The conductors
carrying the +100 and -100 volt supply should be large enough to make the vol-
tage drop between the power supply and the system negligible,
The ‘system procures d-c voltages of +250, -250 and -465 volts from the
‘Model 1011 Power Supply. The following table lists the maximum current
drawn at each voltage when the function generators are operating into nor-
mal output loads,
Current Drain
+250v -250v ~465v
Set-Up Unit 20 ma 5 ma 5 ma
Each Function Generator ' 40ma 12 ma 9 ma
The Model 1011 Power Supply will deliver 300 ma at +250 volts, 150 ma at
~250 volts and 55 ma at -465 volts. Ore Model 1011 will supply a set-up
unit and five function generators, One function generator may be supplied
by the same Model 1011 which supplies a Model 1041 Operational Amplifier
Unit containing ten.. amplifiers.
Power supplied by one Model 1011 is inserted at the set-up unit or at one
of the function generators and carried to other components in the system
by the 29-conductor interconnecting cable shown in figure 6. The three
d-c voltages appear at pins 6,7 and 8 of connectors Jl02 and J103 on the
function generators and connectors J104 and J105 on the set-up unit. When
one part of the system is supplied by a different Model 1011 than another |
part, you must take care to keep the power supplies isolated from one
another, The cable interconnecting the two parts of the system should
Installation -12
poy
Lf (J a ne i
have no conductors connected to pins 6, 7 and 8, Connections at these points
would parallel the outputs of the power supplies and impair the regulation of
both supplies,
Model 1006 Variable D-C Voltage Source,
Figure 7 shows all necessary cable connectidns to this unit,
J REAR LIP OF MODEL 1006
To 1032 Control Unit
"DC SOURCE" socket
Figure 7
Model 1032 Control Unit
To learn how to connect operational components to this unit see the install-
ation instructions for each component,
The control unit obtains reference voltages of +100 and -100 volts from the
Model 1015 Power Supply, The 'MODEL 1015 INPUT" jack at the rear of the
control unit should be connected to the 6-terminal Varicon connector on the
rear lip of Model 1015, Under normal operating conditions the control unit
will not draw more than 15 ma at each of these reference voltages, The
Installation -13
€us) O-r
To "PLATE"
socket
| on cabinet
Model 1015 will supply 150 ma at each voltage, The conductors carrying the +100
and -100 volt supply should be large enough to cause only a negligible voltage
drop between the power supply and the control unit,
The control unit obtains a +250 volt supply from a Model 1011 Power Supply,
The 6-pin Varicon connector at the rear labelled "MODEL 1011 INPUT" should
pe connected to Jl05 or J106 on a Model 1011, The control unit draws about
15 ma when the computer is in the 'REPETITIVE" operating condition, It
draws no current in any other condition,
The Power Supplie s
The diagrams below show all necessary connections to the power supplies
except the output cabling, See the installation instructions on the operational
components to learn how they should be connected to the power supplies,
\
fo LIP OF MODEL 1011
J Internally bussed
a 4
eo ~~
J107 FIL PLATE
Test jack
y106 S105 @©-— Ja
Output jacks
!
To "PLATE"
socket on,
To "FIL"
cabinet
(+250, -250 and -465 volt supplies
are available at each jack)
socket on
cabinet
Figure 8 Cable Connections to Model 1011 Power Supply
Installation-14
Ty
{
‘|
L— J
“)
if
[ J REAR LIP OF MODEL 1010
a AC INPUT AC INPUT
} PLATE 3201 FILAMENT :
J202
3 t400V +400V /
oy '
W "
+ Te RATE ; To "FIL" socket
cabinet Output jacks on cabinet
{+400 and -400 volts are
available at each jack)
Figure 9 Cable Connections to Model 1010 Power Supply
5
To ground
, strap
a Output Jacks. (+100 & -100 volts are available at each jack)
|
REAR LIP OF MODEL 1015
f /
ry i NL J108 PIL
; ! ee
2 =] \lE]_Q f= OTs
} CHASSIS - ocket on
. _ ll7V AC it
Jumper noun | J101 POWER cabinet
5 anp [T— l— oO ~ |
| — L . To "PLATE"
PLATE socket on
cabinet
‘ ; To 1032 Control Unit To Model 1016 Slave Power Supply
vo "MODEL 1015 INPUT" jack if installed
fy ,
| |
\
: r Suppl
| | Figure 10 Cable Connections to Model 1015 Powe pply
| Installation -15
Lo
——_
BERKELEY division of
Beckman Instruments, Inc,
EASE Computer
OPERATING
INST RUC TIONS
Richmond 4, California
15 December 1955
WARRANTY
Every instrument manufactured by the BERKELEY division of Beckman Instruments, Inc. is
warranted to be free from defects in material and workmanship. Our obligation under this
warranty is limited to repairing or replacing any instrument or part thereof, except tubes,
which shall within one year from date of shipment to the original purchaser prove to be
defective after our examination.
Instruments tobe repaired:must be returned tothe factory with transportation charges prepaid.
Repair work will be performed only upon receipt of a written purchase order or authorization.
Claims for damage in shipment should be filed promptly with the transportation company. All
correspondence concerning the instrument should specify the model and serial number, This
information appears on the company name plate.
Experienced service personnel and special test equipment are available at the factory to per-
form any necessary repairs. Every effort will be made to expedite the repair of instruments
returned for servicing.
Any inquiry concerning details of operation, possible modifications, etc., should be addressed
to the Sales Department, BERKELEY division of Beckman Instruments, Inc., Richmond 4,
California,
Operation
CONTENTS
Page
1 Introduction
1 Applying Power
2 ° Initial Checks and Adjustments
8 Constructing and Using a Problem-Solving Circuit
8 General Method
9 - The Control Apparatus
9 Set-up Panel Terminals
16 Control System Controls
23 A Sample Problem
23 Patchboard Connections
24 For the Summing Amplifier
25 For the Integrator
26 For other Components
28 Control Settings
30 Running the Problem
Sw Ow 7 why
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EASE SETUP PANEL-1022 Berkeley
Computer Control System
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Applying Power
INTRODUCTION
See the 'PROBLEM PREPARATION" section of the computer manual to learn
how to devise a circuit analogous to a given equation; that is, to prepare a
diagram similar toFigure 4 at the rear of this section, This operation
section contains instructions for preparing computer components for use
in such a circuit, for constructing the circuit with those components and
for running a problem and measuring or recording the resultant voltages,
Most of the operations are performed on the control system shown opposite.
The part of this section headed "The Control Apparatus" tells what is connected
to each of the set-up panel terminals and describes the function of the operating
controls above and below the panel, This part provides a convenient source of
information for an operator who is not sure how to use a_ particular control
or terminal, The part headed "A Sample Problem" describes the construction
of a complete «xoblem-solving circuit, The circuit has been designed espec-
ially to illustrate the use of nearly all the devices available on the computer,
The sample problem is primarily an introduction for someone who has not used
the computer before, He may familarize himself with the equipment by actually
constructing the circuit step by step as it is described,
APPLYING POWER
The computer is equipped with separate plate and filament 115 VAC supplies,
These supplies are controlled by the PLATE and FILAMENT switches at the base
of the cabinets, All filaments in a cabinet are energized whenever the FILAMENT
switch ison, When applying power close these switches first, Wait at least
30 seconds for the tubes to warm up before applying plate power,
In standard computer installations power reaches the plate circuits in a cabinet
only when four conditions are met,
1, The PLATE switch on that cabinet is on,
2. The FILAMENT switch on that cabinet is on,
3, The PLATE switch on the control system cabinet is on,
4, The FILAMENT switch on the control system cabinet has
heen on at least 30 seconds,
Operation-1
~ So SRg ASSRRR -
7 SE SSE S-
7 SER
— Se Rig tFS ERRNRRE -—
Initial Checks
With this arrangement it is convenient to use the PLATE switch on the control
cabinet as a master plate on-off switch and to leave all other PLATE switches
permanently on, When applying power, first turn on the FILAMENT switches
in all cabinets except the control cabinet, The green indicators only will light on
these cabinets, (If the red indicators light the installation is not standard and
this procedure should not be followed.) Then, turn on the control cabinet FILA-
MENT and PLATE switches in that order, After an automatic 30-second delay
the red indicators will light on all cabinets, When removing power turn the
switches off in reverse order, Non-standard installations may be wired so
that the plate supply to each cabinet is not affected by the control cabinet switches,
See the installation section of the computer manual (pages 2 thru 5) for a descript-
ion of the power control system and the various ways it may be wired,
INITIAL CHECKS AND ADJUSTMENTS
The operational components mentioned below must be occasionally checked and
adjusted to insure continued accuracy, Whenever you have reason to suspect
that a computer component may have lost the accuracy desired, make the
checks and adjustments described here before inserting it in a problem-solving
circuit,
MODEL 1048 OPERATION AMPLIFIER
Allow the amplifier to warm up one-half hour with both filament and plate
power applied before making the front panel balance or zero adjustment,
This adjustment corrects for amplifier drift and provides an indication of
the operating condition of the amplifier, Although daily drift is negligible
under normal conditions, daily adjustment is suggested since the procedure
is quick and easy and will help the operator detect faulty amplifiers before
they are used,
To balance an amplifier place all the lever switches on the Model 1041 panel
at ON (up) except the switch for the amplifier to be adjusted, Move this
Operation-2
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Initial Checks
switch to the down (balance) position, Then, if necessary, adjust the
screwdriver control above it until the front panel meter reads zero,
This indicates that the output voltage is zero (at ground) with the input
at ground.
If the meter will not come to zero, the amplifier is defective and should not
be used in a problem-solving circuit, If the balance adjustment is insenstive
compared to that of other amplifiers, the amplifier may lack enough gain to
perform properly,
When a defective amplifier is left in the computer rack and energized along
with the rest, make sure that a feedback resistor (100K to 1M) is connected
between the amplifier output and the input grid, This will prevent the amp-
lifier from overloading and actuating the alarm circuitry on the control system,
All amplifiers used as summers have a feedback resistor connected under all
conditions, The other amplifiers may require a resistor patched in on the set-
up panel,
CAUTION: Take care not to connect an amplifier output to
ground since this will damage the outptt tube,
Do not connect a patch cord from an AMP OUT
terminal to an AMP GRID terminal because the
AMP GRID terminal is grounded during some
computer operations,
MODEL 1056 FUNC TION MULTIPLIER
Properly adjusted this multiplier produces an output voltage within 1 volt
of .OLXY where X and Y are the input voltages, The output voltage may
drift as much as 1 volt during each hour following adjustment,
The multipliers are numbered from 1 to 4 on the Model 104l panel, Below
each number is a switch and four potentiometer controls for adjusting that
multiplier, Make all four adjustments on each multiplier while all the other
Operation-3
Initial Checks .
multipliers in the cmssis are switched to OPERate, To make a precise
adjustment using the meter
cedure to adjust each multiplier:
l,
Turn the switch to DC ADJ and rotate the DC ADJ, control until the
meter on the 1051 panel reads zero,
At this position of the switch both X and Y inputs are zero, The
adjustment sets the output voltage at zero,
Turn the switch to X ADJ, and adjust the X ADJ control for a
minimum reading on the meter,
At this switch position the Y input is zero and the X input
is a 60 cycle test signal which peaks at -100 and +100 volts,
The adjustment sets the output voltage as near zero as
possible over the full range of X values when Y is zero,
Turn the switch to Y ADJ, and adjust the Y ADJ control for a minimum
meter reading,
At this switch position the X input is zero and the Y input
is the test signal,
NOTE: If the operator is preparing the multiplier for use
in the sample problem, he may omit adjustment
No, 4. Toset up the Model 1056 for this adjustment
requires considerable knowledge of the control
system, The multiplier will function accurately
enough in the sample problem circuit without
adjustment No, 4,
The last adjustment determines the value of K in the output expression
KXY,. Ideally, the adjustment should be made to achieve a minimum
average error for all combinations of X and Y input voltages, If the
first three adjustments have been made carefully, the static error may
be held within 0, 5% by setting K at 01 for only one combination of X
Operation-4
on the 1051 panel, press the METER SENsitivity
button after the pointer has been brought near zero, Use the following pro-
ae,
Z|
c—
Cj
|
Co) coo
y
Initial Checks
and Y voltages, Apply +100 volts to both X and Y inputs and connect the
multiplier anda 100 volt reference source to a summing amplifier ss
shown in the diagram below,
Model 1056 with
Switch at OPERate
+100V Ref. xX R, = 0.1M 1M
}-. O1XY MWA
+100V Ref. Y
To Meter
~~ _-
Ry =0.1M
+100V Ref. AAA
Turn the switch to OPERate and adjust the OPERate control until the output
of the summing amplifier is zero, This indicates that the output of the
multiplier is -100 volts which is -,01 XY when X and Y are both +100 volts,
The error due to any slight mismatch in the input resistors Ry and Ro may
be detected and eliminated by reversing the inputs to the summing amplifier
Connect the multiplier output to Ro and the reference source to Ry « If the
output of the summer is still zero, the resistors are well matched, If an
output voltage appears, readjust the OPERate potentiometer until the output
voltage has the same absolute magnitude with summer inputs reversed as
it does when the inputs are connected as diagramed above.
When the above adjustments are made the multiplier is ready to be connected
in a problem-solving circuit, , Repeat the adjustments before taking any critical
data if so much time has passed since the last adjustment that drift might cause
too great an error, The output of a multiplier may drift a maximum of 1 volt
in a hour,
Operation-5
Initial Checks
FUNCTION GENERATORS
See the section of the computer manual on the type function generator in-
stalled for directions, If the function generator circuit conatins any Model
1048 amplifiers, make initial adjustments on those as described on
"Operation, Page 2", |
Operation-6
[
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[—
CONSTRUCTING AND USING A PROBLEM-SOLVING CIRCUIT
GENERAL METHOD
A problem-solving circuit is constructed mainly by making patch board con-
nections and other adjustments on the control system shown opposite Page l.
Input and output terminals of the various operational components which must
be connected to form the circuit are gathered together within the system,
Connections between different components are made by patching cords from
one terminal to another on the set-up panel or patch board, This may be
done with the board in the receptacle unit or removed whichever is most
convenient, Input and feedback resistors and capacitors are inserted by
plugging an external component into the patch board or by making connections
to resistors and capacitors in the receptacle unit whose terminals have been
brought out to the patch board, Fixed voltages are introduced into the com-
puting circuitry by patching a cord from a terminal connected to a voltage
source to an operational components terminal,
After patch board connections are complete the board is placed in the receptacle
unit (if it has been removed) and the values of internal resistors, capacitors |
and fixed voltages sources are set by controls on the control cabinet, Starting
from a "reset'' condition in which each integrator output is held at some initial
condition voltage, the computer is switched to complete the problem-solving
circuit and the circuit voltages begin to change with time, The solution to a
problem is usually the voltage changes with respect to time a certain points
in the circuit, Voltages at these points may be observed on a meter or re-
corded, The changing voltages a may be halted at any time to inspect values at
that point, The control system may be switched so that the solution is auto-
matically repeated and consequently suitable for display on an oscilloscope,
Operation-8
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“
THE CONTROL APPARATUS
SET-UP PANEL TERMINALS
Each hole on the patch board becomes a single terminal jack when the board
is in place in the receptacle unit, In some places schematic diagrams
printed on the face of the patch board indicate the behind-the-board con-
nections, All bussed terminals are connected by a line from one hole to
the other, There are terminals for more operational components than are
ordinarily installed in the computer, Identical components are numbered
from 1 up and connected to groups of terminals numbered in the same way...
Terminals bearing a higher number than the quantity of components installed
are not connected to anything,
The following pages contain a list of all the types of terminals on the patch
board, Under the name of each type is the identifying patch board label, the
location on the board and information on to what each is connected,
Bussed Terminals (© & Zr)
The terminals in the columns under the ~ sign and the column nearest the
edge of the board under the Zin sign, are connected to no internal com-~-
ponents whatever, These terminals are simply bussed as indicated on the
face of the patch board, They are used for two purposes: first, to increase
the number of terminals connected to any chosen point in a circuit so that
several elements may be connected to that point; second, as simple mounting
points for plug-in components which are connected with patch cords to component
terminals elsewhere on the board,
Summing Amplifier Terminals (AMP GRID, AMPIN & AMP OUT)
The terminals of each amplifier (summers and integrators) are in a hor-
izontal row opposite the number of the amplifier on the margin of the
patch board, The complete behind-the-board connections to amplifier No, 4
are shown in Figure 1, All summers (that is, all amplifiers labelled 2 )
aré connected in this way.
' Operation-9
Set-Up Panel Terminals
AMP
IN
AMP Zw coer our x10 X1
GRID 5) a
a ae ==
WV
0.1M 1.0M
Patch Board Section
+28v
iC" Relay
ON 9 QOFF
To AMPLIFIER
‘wo SELECTOR Switch
= 1048 >
COEFFICIENT A
ADJUST Switch
1
10M
Figure |
Each amplifier has a fixed feedback resistance (R.) of lmegohm, Al
megohm input resistor is connected from the input grid to the XI ter-
minal on the patch board, A 0,1 megohm input resistor is connected
from the grid to the X10 terminal on the board, You may use these
terminals to set up the amplifier as a "unity" or "times ten" inverter
without patching in external resistors, The input grid is also connected
directly to the GRID terminal on the patch board, External plug-in input
resistors may be patched to this terminal, The '"C"' Relay contact in Figure
i is positioned as shown except when the COEFFICIENT ADJUST Switch
is ON,
Integrator Amplifiers Terminals (AMP GRID, AMP IN, AMP OUT)
The complete behind-the-board connections to integrator amplifier No, l
are shown in Figure 2, All amplifiers labelled '' f '' are connected in this way.
Operation-~10
{
{}
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—
{
—
4
4
?
—
C
Set-up Panel Terminals
1,0 megohm and 0,1 megohm input resistors are connected to the Xl
and X0 AMP IN terminals, and the input grid is connected directly to
AMP Zz COEF AMP AMP AUX /
ouUP— IN COEF BIAS
X10 | X1 - +
293° C—O) (0 |2 212
I
@ olla |lo|a eile e
nasa I << | ee |
0. 1M
AVA,
1. 0M .
/
ANI
TO AMPLIFIE
> )SSELECTOR Svitch
COMPUTE ING
° 104
—— Wa
"A" Relay Contacts
—— Eee 1. Opf Sections of Patch Board
= ; | }+_——-o INTEGRATOR
CAPACITOR
s_ Switch No. 1
I luf
-—— INITIAL
RESET
o 1Q, IQ 219 31@
COMPUTE | CONDITIONS
AM 2@l 129 22@32@
100K |
"B" Relay Contacts
se
Figure 2
the AMP GRID terminals, A1, Ouf or 0,luf feedback capacitor is chosen by
3-position switch labelled with the number of the integrator under "INTE-
GRATOR CAPACITORS" below the patch board,
When the SPECIAL-INTEGRATE switch bearing the number of the integrator
is at INTEGRATE, the "A" & "B" relays are positioned according to the
Operation-1i1
Set-up Panel Terminals
operating condition set by the control unit, In the RESET condition the input
grid is connected to the INITIAL CONDITION terminal marked by the number
of the integrator, In this state the BIAS voltage, patched across the AMP
OUT terminal and the INITIAL CONDITION terminals, charges the feed-
[
fj
back capacitor,
NOTE:
Operation-12
The five SPECIAL-INTEGRATE switches above
the control unit panel are each labelled with the
numbers of four integrators, Any group of four |
may be converted to summing amplifiers by the
following steps: |
1, Place the SPECIAL-INTEGRATE switch at
SPECIAL,
2, Place the INTEGRATOR CAPACITORS
switches labelled with the same numbers
at the center position,
3, Patch a 1 megohm feedback resistor from
the AMP GRID to the AMP OUT terminal
of each amplifier,
When this is done the amplifier operates exactly
like a summing amplifier, The 'A" & "B" relays
are not influenced by the operating condition of
the computer, "A" and "B" relay contacts are
positioned as shown in Figure 2 when the COEF-
FICIENT adjust switch is ON, When this switch
is OFF both contacts assume the opposite position,
co
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|
2
(-
i
Lo)
H C7
Pood
reo
i
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—
——
Lowe
—
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pe
LL
Unity Inverter Terminals
INVERT
Terminals for six unity inverter amplifiers
numbered 41 to 46 are availiable near the
center of the board under the two columns
labelled "INVERT", Two input terminals
for each are adjacent the number of the
amplifier in the column labelled "IN" and
two output terminals in the OUT column,
The input and feedback resistances of these
amplifiers are fixed and are bothl1M, so
that any voltage introduced at either of the
two input terminals appears with an op-
posite sign at both of the output terminals,
Auxiliary Amplifier Terminals
AMPLIFIERS
Terminals for four extra amplifiers which
have no internal input or feedback resist-
ors are available in a row near the center
of the patch board labelled "AMPLIFIERS, "'
Multiplier Terminals
Xx, Y& ,Ol XY
Terminals for sixteen multipliers are loc~
ated in convenient gapsin the AMP IN and
AMP, OUT columns labelled X, Y and -, 01
XY, Theterminals for eachmultiplier are
in the rowmarkedbyitsnumber, The vol-
tage appearing at either of the output ter-
Set-up Panel Terminals
minals inthe , 01XY columnis equal to -, 01
times the product of the voltage introduc-
ed at the input terminal in the X column
and that introduced at the input terminal
in the Y column,
Function Generator Terminals
FUNCTION GEN,
Terminals for five function generators are
located in the center of the patch board
under FUNCTION GEN, See the section of
this manual onfunction generators to learn
how these terminals are connected,
Silicon Diode Terminals
DIODES
These are at the top center of the patch
board under DIODES, They areconnected
exactly as shown on the face of the board,
Since the diodes are ordinarily used in
pairs for limiting circuits, etc, they are
numbered in pairs from 1 to 5,
Servo Potentiometer Terminals
COEF IN & AUX COEF
The numbers composing the second col-
umn in from the margins of the patch board
refer to the first sixty precision potent-
iometers located in the control unit, The
terminals adjacent to each number (one
under Z,,.,. and two under COEF, IN) are
IN
Operation-13
Set-up Panel Terminals
connected to that potentiometer as shown
in the schematic diagram which appears on
the patch board near numbers 1 and 31,
Terminals for the remaining thirty-eight
potentiometers in the control unit are in
the broken columns labelled "AUX. COEF, "
These, numbered 61 to 98, are connected
as shownon theboardn