TB 55-4920-346-34
(4) Adjust potentiometer R13 for equal deflection on both sides of center zero. Reversing test leads from test
points 16 and 17 as necessary. Adjust R13 when phase A is in TP-16.
10. AC Milliamp
a. Performance Check.
(1) Connect equipment as shown in Figure 5.
(2) Set the METER MODE selector to AC MILLIAMPS and METER to the INTERNAL position on the test
instrument.
(3) Set meter calibrator (A4) output controls to amps, 400 Hz position.
(4) Adjust the current controls on the meter calibrator for an indication of 100 MA on the test instrument. Meter
calibrator will indicate between 82 and 118 MA.
(5) Adjust the current controls on the meter calibrator for each test instrument indication as listed in table 4.
Meter calibration will indicate within the limits specified.
(6) Set all power to OFF.
b. Adjustment. No adjustments can be made.
Change 1
9
