TB 9-6625-1866-50
9. 500-Volt Range and Stability
a. Performance Check
(1) Turn UUT VOLTS RANGE switch to CAL and press and hold CAL PUSH (OP
CAL to CAL) switch.
(2) Adjust ADJ CAL control for 0 (zero) indication on UUT meter. Observe that
ADJ CAL control is within 90 degrees of center of its rotation. If not, perform b(1) and (2)
below.
(3) Release CAL PUSH (OP-CAL, to OP) switch and turn VOLTS RANGE switch to
500.
Figure 1. Differential voltmeter.
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