TB 9-6625-2146-35
8. DC Volts
a. Performance Check
(1) Set TI function switch (if applicable) to dc volts (millivolts) and set range switch
to lowest range.
(2) Connect dc voltage standard (A7) (and if applicable through dc voltage divider
(A6)) to TI, observing polarity.
(3) Adjust dc voltage standard for full-scale indication on TI. DC voltage standard
will indicate within limits specified under accuracy in table 3 for TI being calibrated.
(4) Repeat technique of (1) and (3) above for remaining ranges.
NOTE
Perform tracking and linearity check on a convenient range at
cardinal points approximately two-thirds and one-third of full
scale. Indications will be within stated percent of full scale
for each cardinal point.
b. Adjustments. No adjustments can be made.
Table 3. Dc Voltage
Dc voltage standard indications (V)
Test instrument
TS-340/U and Weston, Models
range
TS-433/U
430, 455, 622 series, 901 and 931
0.25%
0.5%
Min
Max
Min
Max
1
mV1
---
---
0.995
1.005
2 mV
---
---
1.99
2.01
5 mV
---
---
4.975
5.025
10 mV2
---
---
9.95
10.05
20 mV
---
---
1.99
2.01
50 mV
---
---
4.975
5.025
100 mV
---
---
9.95
10.05
200 mV3
---
---
.1990
.201
500 mV
---
---
.4975
.5025
1000 mV
---
---
0.9950
1.0050
2000 mV
---
---
1.9900
2.0100
1.5 V
---
---
1.4925
1.5075
2 V
---
---
1.99
2.01
2.8 V
---
---
2.786
2.814
3 V
2.9925
3.0075
2.985
3.015
5 V
---
---
4.975
5.025
7.5 V
---
---
7.462
7.538
10 V
---
---
9.95
10.05
15 V
14.9625
15.0375
14.925
15.075
See footnote at end of table.
Table 3. Dc Voltage - Continued.
6
