TB 9-6625-2194-35
R151
845AB & 845AB/AF
845AR
R213
Figure 1. High impedance voltmeter -
null detector -
rear view.
Calibrator Indications (V)
Test instrument
RANGE
DC voltage
Model 845AB
switch settings
divider settings
and 845ABAF
Model 845AR
Min
Max
Min
Max
V
.0001000
0.0284
0.0316
0.0281
0.0319
3
.0001000
0.097
.103
0.096
0.104
V
10
V
.0001000
0.293
.307
0.290
0.310
30
.0010000
0.0979
0.1021
0.0969
0.1031
V
100
V
.0010000
0.2939
0.3061
0.2909
0.3091
300
1
mV
.0100000
0.098
0.102
0.097
0.103
3
mV
.010000
0.294
0.306
0.291
0.309
10
mV1
---
0.0098
0.0102
0.0097
0.0103
30
mV
---
0.0294
0.0306
0.0291
0.0309
100
mV
---
0.098
0.102
0.097
0.103
300
mV
---
0.294
0.306
0.291
0.309
1
V
---
0.98
1.02
0.97
1.03
3
V
---
2.94
3.06
2.91
3.09
3
V2
---
1.94
2.06
1.91
2.09
3
V3
---
0.94
1.06
0.91
1.09
10
V
---
9.8
10.2
9.7
10.3
30
V
---
29.4
30.6
29.1
30.9
100
V
---
98
102
97
103
300
V
---
294
306
291
309
1000
V
---
980
1020
970
1030
1Remove
dc voltage divider from equipment setup.
2Adjust
calibrator output for an indication of 2 on TI lower scale
3Adjust calibrator output for an indication of 1 on TI lower scale
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
5/(6 BLANK)