TM 11-6625-444-14-2
(2) Apply +0.12000 Vdc to the voltmeter
Iect the 2 V range.
INPUT terminals from the dc voltage calibrator.
(3) Adjust A1-R407 so that the voltage
(5) Set the digital multimeter (A5) to the 20
monitored by the digital multimeter just trips from
Vdc range.
approximately -14.0 Vdc to approximately +5.0
Vdc.
PUT terminals from the dc voltage calibrator
(A1).
(4) Increase the dc voltage calibrator out-
put to +0.13000 Vdc. The voltage monitored by
the digital multimeter should trip back to -14.0
(7) Adjust A1-R406 so that the voltage
Vdc.
monitored by the digital multimeter just trips from
approximately +2.5 Vdc to approximately -14.0
(5) Reduce the dc voltage calibrator to
Vdc.
output to +0.11000 Vdc. The voltage monitored
by the digital multimeter should trip back to +5.0
(8) Reduce the dc voltage calibrator out-
Vdc.
put to +1.9400 Vdc. The voltage monitored by
the digital multimeter should trip back to +2.5
Vdc.
d. <-12000 Down Range Trip Point Adjust-
(9) Increase the dc voltage calibrator out-
ment (A1-R408)
put to +1.9600 Vdc. The voltage monitored by
the digital multimeter should trip back to -14.0
(1) Change the voltage applied to the volt-
Vdc.
meter INPUT terminals to -0.12000 Vdc.
b. > -195000 Up Range Trip Point Adjustment
(2) Adjust A1-R408 so that the voltage
(A1-R405)
monitored by the digital multimeter just trips from
approximately -14.0 Vdc to approximately "+5.0
(1) Change the voltage applied to the volt-
Vdc.
meter INPUT terminals to -1.9500 Vdc.
(3) Increase the dc voltage calibrator out-
(2) Adjust A1-R405 so that the voltage
put to -0.13000 Vdc. The voltage monitored by
monitored by the digital multimeter just trips from
the digital multimeter should trip back to -14.0
approximately +2.5 Vdc to approximately -14.0
Vdc.
Vdc.
(4) Reduce the dc voltage calibrator out-
(3) Reduce the dc voltage calibrator out-
put to -0.11000 Vdc. The voltage monitored by
put to -1.9400 Vdc. The voltage monitored by
the digital multimeter should trip back to +5.0
the digital multimeter should trip back to +2.5
Vdc.
Vdc.
(4) Increase the dc voltage calibrator out-
put to -1.9600 Vdc. The voltage monitored by
the digital multimeter should trip back to -14.0
Vdc.
a. RATlO FULL RANGE control setting. Refer
to figure 6-24 for location of adjustments.
c. < +12000 Down Range Trip Point Adjust-
ment (A1-R407)
(1) Apply a +1.000 Vdc signal to the EX-
TERNAL REFERENCE V and LO terminals on the
voltmeter rear panel from the first dc voltage
test
(1) Move the digital multimeter
calibrator (A1).
lead from A1-CR401 anode to A1-U405, pin 12.
