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4-4
(green) patch terminals.
Refer to Table 4.1 for the proper logic signals for the
desired mode.
4.2.2
Integrator Capacitor Selection
Each integrator is provided with four capacitors (10
~f,
1
~f,
0.02
~f,
and
0.002
~f)
which provide time constants of 1 second, 001 second, 2 milliseconds,
and 0.2 millisecond respectively when used with a standard gain-of-one (lOOK)
resistor.
Capacitor selection is determined by logic levels on the TS (time
scale) and the proper patching of the FAST input terminals.
Bottling the TS patch terminals connects the TS input to a master time scale
bus'.
The logic levels in this bus are:
controlled by the TIME SCALE push-
buttons on the main control panel.
The operation of the TIME SCALE pushbutton
is described in Paragraph 1.3.5 of Chapter 1.
Removal of the TS bottle plug
provides access to the TS input (green) terminal.
Externally generated logic
levels can be patched to this terminal to provide manual control of the TS
relay.
A low (grd) patched to the TS terminal energizes the TS relay placing
it in the 2 ms state while a high
(+
voltage or no connection) patched to the
terminal de-energizes the TS relay placing it in the IS state.
The FAST terminals, when bottled, effectively slow down computer operation by
increasing the value of the integrator feedback capacity.
This is accomplished
by
paralleling the 1
~f
capacitor with a 9
~f
capacitor in the IS mode and
paralleling the 0.002
~f
capacitor with a 0.018
~f
capacitor in the 2 ns mode.
Table 4.2 gives the necessary patching and time scale selection for different
time constants.
Table 4.2.
Time Constant Selection
TIME SCALE
FAST
Feedback
Time Constant
Switch
Terminals
Capacitor
(with lOOK Input)
1 SEC
Bottled
10
~f
1.0 SEC
1 SEC
Not Bottled
1 Ilf
0.1 SEC
2 MS
Bottled
0.02
~f
2.0 MS
2 MS
Not Bottled
0.002
~f
0.2 MS
4.2.3
Additional Integrator Uses
Any integrator not used for a particular problem can, by proper patching, be
used as
1) an extra D/A switch, and 2) as a differentiator.
The paragraphs
below describes these additional uses for the integrator.
4.2.3.1
D/A Switch.
To
the bottle plug between the C terminal
prong bottle plug between an amplifier
put.
Patch the signals to be switched
maining gain-of-one amplifier inputs.
4.3.
If the four prong bottle plug is
use the integrator as a D/A switch, remove
and the amplifier output.
Connect a two
gain-of-one input and the amplifier out-
in the IC patch terminal and the re-
The resulting circuit is shown on Figure
left in the OP and IC patch terminals,
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