TB 9-6625-1314-35
b. Adjustments
(1) Press and hold INT CHECK 8000 pushbutton and adjust INT CHECK 8000
adjustment to obtain an indication of 8000 on voltmeter (A14). Release pushbutton.
(2) Set RANGE switch to 1000 MV.
(3) Adjust dc voltage standard or electrical test set for an output of +800.0 mV.
(4) Adjust A2R46 (fig. 5) until voltmeter (A14) indicates +800.0 (R).
NOTE
TI must be removed from voltmeter to perform adjustment.
Adjust in increments until desired indication is obtained.
(5) Reverse dc voltage standard or electrical test set output polarity.
(6) If voltmeter (A14) does not indicate between -799.1 and -800.9, readjust A2R46
to compensate for error between positive and negative indications.
(7) Adjust dc voltage standard or electrical test set output to zero.
(8) Set RANGE switch to 100 MV.
(9) Short voltmeter (A14) INPUT, using lead (B3).
(10) If voltmeter (A14) does not indicate 000.0 readjust A2R33 (fig. 5) until voltmeter
indicates 000.0.
(11) Remove short placed in (9) above.
(12) Adjust dc voltage standard or electrical test set for an output of -80.00 mV.
(13) Adjust A2R44 (fig. 5) until voltmeter (A14) indicates -80.00 (R).
(14) Reverse dc voltage standard or electrical test set output polarity
(15) Repeat a(1) through (4) above.
23. Final Procedure. In accordance with TM-38-750, annotate and affix DA Label 80
(US Army Calibrated Instrument). When the TI receives limited or special calibration,
annotate and affix DA Label 163 (US Army limited or Special Calibration). When the TI
cannot be adjusted within tolerance, annotate and affix DA Form 2417 (US Army
Calibration System Rejected Instrument).
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