TB 9-6625-2146-24
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 calibrator to TI observing polarity.
(3) Adjust calibrator for full-scale indication on TI. Calibrator will indicate within
limits specified under accuracy in table 4 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 r percent of full scale
for each cardinal point.
b. Adjustments. No adjustments can be made.
Table 4. Dc Voltage
Calibrator indications (V)
TS-340/U and Weston, Models
TS-433/U
Test instrument
430, 455, 622 series, 901 and 931
range
r0.25%
r0.5%
Min
Max
Min
Max
1 mV
---
---
0.995
1.005
2 mV
---
---
1.99
2.01
5 mV
---
---
4.975
5.025
10 mV
---
---
9.95
10.05
20 mV
---
---
1.99
2.01
50 mV
---
---
4.975
5.025
100 mV
---
---
9.95
10.05
200 mV
---
---
0.1990
0.201
500 mV
---
---
0.4975
0.5025
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
20 V
---
---
19.9
20.1
30 V
---
---
29.85
30.15
50 V
---
---
49.75
50.25
60 V
---
---
59.70
60.30