TB 9-6625-2183-24
Figure 3. DMM input setup.
(2) Set calibrator output to 1.900 V and adjust R855 (fig. 4) for DMM indication
of 1.900 (R).
17. Ac Volts
a. Performance Check
(1) Connect calibrator to DMM INPUT LO and HI, and adjust calibrator frequency
to 50 Hz.
(2) Press ACV pushbutton to IN.
(3) Adjust calibrator until DMM indicates 1.900 V ac. If calibrator does not indicate
between 1.8800 and 1.9200 V ac, perform b below.
(4) Repeat technique of (3) above for DMM indications and calibrator frequency
settings listed in table 8. Calibrator will indicate within specified limits.
Table 8. Ac Voltage Check
Test instrument
Ac calibrator indications (V Ac)
DMM indications
Frequency
Min
Max
(V ac)
(Hz)
1.900
500
1.8800
1.9200
19.00
500
18.800
19.200
19.00
50
18.800
19.200
190.0
50
188.00
192.00
190.0
500
188.00
192.00
700.0
500
686.0
714.0
700.0
50
686.0
714.0
b. Adjustments. Set calibrator to 1.9000 V and adjust R853 (fig. 4) for a DMM
indication of 1.900 V ac (R).