TB 9-4931--363-50
NOTE
No zero adjustment is ever required on any measurement
function or range scale and none is provided.
(4) If any reading of the digital multimeter varies from that specified in table 4 or 5,
adjust the corresponding adjustment listed in table 7 until the display indicates the exact
value of test input applied.
Table 7. Calibration Adjustments
Function
Range
Test
Select
Select
Input
Adjustment
DCV
1.0
1.000 VDC
R10
ACV
1.0
1.000 VAC, RMS 400 Hz
R4
NOTE
It the only test standard available does not provide the full-
scale values shown in the tables, then the closest value to the
specified input should be used and the control adjusted for that
display value. It is desirable to use input signals of at least 50
percent of full scale if that option is available.
WARNING
Use insulated calibration tool. High voltage may be present at
calibration points.
(5) Replace the rear cover of the digital multimeter.
(6) Replace the power supply mounting plate.
(7) Install the test set chassis assembly in the test set container.
7. Final Procedure
a. Deenergize and disconnect all equipment.
NOTE
Reinstall protective covers on unit under test, if necessary.
(U.S. Army Calibration System). When the unit under test cannot be adjusted within
tolerance or utilized with an appropriate correction chart, annotate and affix red tag DA
Form 2417 (Unserviceable Test Instrument or Standard (red tag)).
PIN: 015130-000
