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8.
Repeat paragraphs 5-119.3 and 5-119.4.
9.
Disconnect the external DVM. With the DVM input jack sti
II
shorted adjust the AID Zero Potentiometer
on the
110
Board (Figure 5-19) for a 0.0 VDC reading on the R2001A CRT display.
CAUTION
Do not use the card extender while aligning the Processor
110
board.
10.
Remove the short from the DVM Input and connect the DVM Input to TP 12 oftheScopeiDVM Control
Board.
11.
Adjust the AID Gain Potentiometer on the Processor
110
Board (Figure 5-19) for a DVM reading on the
CRT equal to the voltage measured at TP 12 with the external DVM for paragraph 5-119.6.
12.
Connect the external DVM to TP11 of the ScopeiDVM Control Board and chassis ground. Note the
DVM reading for TP11.
13.
Disconnect he external DVM from TP11 and connect the DVM Input Jack on the front panel to TP11 of
the ScopeiDVM Control Board.
14. Adjust the AID Balance Potentiometer on the Processor
1/0
Board (Figure 5-19) for a DVM reading on
the CRT equal to the voltage measured at TP11 with the external DVM in step
13 .
.
,.~.
--·
-~
.
.
TP1. TP2
AID GAIN
AID ZERO
AID BALANCE
Figure 5-19.
Processor 110 AID Alignment Points
5-29
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