TB 9-6625-1957-24
(3) Rotate calibrator knob below EDIT FIELD pushbutton to adjust calibrator
display indication to equal TI indication. If calibrator err display does not indicate within
limits specified in first row of table 6, perform 11 b below, before proceeding.
(4) Repeat technique of (1) through (3) above, using the remaining calibrator
outputs and TI settings listed in table 6. Calibrator err display will indicate within limits
specified in table 6.
Table 6. Resistance
Test instrument
Calibrator
err
RANGE/FUNCTION
display
Nominal
settings
indication
output
0.31 %
200 k
190
k
0.31 %
21 k
1.9 k
0.31 %
20 k
19
k
0.31 %
22 M
1.9 M
0.51 %
20 M
19
M
Set calibrator 2 WIRE COMP to on.
1
Set calibrator 2 WIRE COMP to off.
2
b. Adjustments. Adjust R35
CAL (fig. 1) for a T1 indication equal to calibrator's
displayed value for 190 k (R). No further adjustments can be made.
12. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
(1) Connect multimeter between TP 1 PIN 24 +5V (fig. 1) and chassis ground. If
multimeter does not indicate between 4.9 and 5.1 V dc, perform 12 b below.
(2) Connect multimeter positive lead to TP 2 VR 410 +12 V (fig. 1). Multimeter will
indicate between 11.0 and 13.0. V dc.
(3) Connect multimeter positive lead to TP 3 PIN 15 -12 V (fig. 1). Multimeter will
indicate between 11.4 and 12.6 V dc.
(4) Connect multimeter positive lead to TP 6 +12 V FLOATING (fig. 1) and negative
lead to TP 5 FLOATING GROUND (fig. 1). Multimeter will indicate between +11.4 and
+12.6 V dc.
(5) Move multimeter positive lead to TP4 12 V FLOATING (fig. 1). Multimeter
will indicate between 11.4 and 12.6 V dc.
(6) Move multimeter positive lead to TP 7 +5 V FLOATING (fig. 1). Multimeter will
indicate between +4.5 and +5.5 V dc.
b. Adjustments. Adjust R420 5 V ADJ (fig. 1) until multimeter indicates +5.00 V dc (R).