TB 9-6625-2114-35
15. Dc Voltage
a. Performance Check
(1) Set FUNCTION switch to +DCV and RANGE switch to .5V.
(2) Connect DCV probe and COM lead together. If TI meter does not indicate 0,
perform b (1) and (2) below.
(3) Set FUNCTION switch to -DCV. If TI meter does not indicate 0, perform b
(3) below.
(4) Set RANGE switch to each range. Zero offset will not exceed 1 percent of
full scale for any range.
(5) Set FUNCTION switch to +DCV and repeat technique of (4) above.
(6) Set RANGE switch to .015V.
(7) Connect DCV probe and COM lead to calibrator OUTPUT HI and LO.
(8) Adjust calibrator output for a full-scale indication on TI. If calibrator does not
indicate between 0.01470 and 0.01530 V, perform b (4) and (5) below.
(9) Repeat technique of (6) and (8) above using settings and indications listed in
value and perform adjustments listed in table 6 for full-scale indication on TI.
Test instrument
Calibrator indications (V)
Adjustments
RANGE
Indications
switch settings
(V)
Min
Max
(R)
.05V
0.05
0.0490
0.0510
R18
.15V
0.15
0.1470
0.1530
R18
.5V
0.5
0.490
0.510
R30
1.5V
1.5
1.470
1.530
R30
5V
5.0
4.90
5.10
R30
5V
3.0
2.90
3.10
---
5V
1.0
0.90
1.10
---
15V
15.0
14.70
15.30
R30
50 V
50.0
49.0
51.0
R30
150V
150.0
147.0
153.0
R30
500V
500.0
490.0
510.0
R30
1500V
1000.0
970.0
1030.0
R30
NOTE
R18 affects all ranges and R30 affects ranges above 0.15 V.
Because of interaction, a justment of R18 and R30 (fig. 3)
d
may have to be repeated until TI voltage indications are
within specified limits.
