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Page Title:
AC/DC VOLTMETER Circuit Select Tests (CRC) |
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 TM
55-4920-430-13
g. Reverse the connections to the dc power supply to check negative indications. For each dc input
level, the AC/DC VOLTMETER reading shall be as listed below.
DC
METER
AC/DC
RANGE SWITCH
INPUT LEVEL
VOLTMETER READING (DC)
200 MV
-49.0 to
-51.0
mV
50.0 mV
-98.4 to
-101.6
mV
100.0 mV
-147.8 to
-152.2
mV
150.0 mV
-187.3 to
-192.7
mV
190.0 mV
flashing
220.0 mV
2V
0.500
V
-0.495 to
-0.505
V
-0.995 to
-1.005
V
1.000
V
-1.494 to
-1.506
V
1.500
V
-1.894 to
-1.906
V
1.900
V
flashing
2.200
V
20 V
-4.94 to -5.06
V
5.00 V
-9.93 to -10.07
V
10.00 V
-14.91 to -15.09
V
15.00V
-18.90 to -19.10
V
19.00 V
flashing
22.00 V
200 V
-4.6 to -5.4 V
5.0 V
-14.5 to -15.5 V
15.0 V
-29.4 to 30.6 V
30.0 V
follows:
a. Set the METER RANGE switch to 2V and METER switch to DC.
b. Set the A/B SELECT switch to A.
c. Connect the negative terminal of the dc power supply and the negative test lead of the digital mul-
timeter to receptacle AFCS J3, pin AA. Connect the positive test lead of the multimeter to the positive
terminal of the dc power supply. Adjust the multimeter to read dc volts. Adjust the power supply for
0.25-volt output.
d. Set the CIRCUIT SELECT A switches to the positions listed below. At each position, connect the
0.25-volt output of the dc power supply to the receptacle pin listed below. For each position and pin, the
AC/DC VOLTMETER shall read 0.225 to 0.275. (See fig. 4-8.)
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