TB 9-6625-2353-35
Table 3. Dc Voltage Accuracy - Continued
Calibrator
Test instrument
Range
Indication limits
Output
setting
Min
Max
19 V
20 V
18.97
V
19.03 V
190 V
200 V
189.7
V
190.3
V
1000 V
1000 V
998.0
V
1002
V
50001, 2, 3
1000 V (200) V
474.0 (94.8) V
526.0 (105.2) V
Perform only if probe is supplied with TI.
1
Replace calibrator with power supply. Connect probe to TI V-Ω and COM inputs
2
and to power supply observing polarity. After probe check is complete, reduce output
to minimum and connect TI V-Ω and COM inputs to calibrator OUTPUT HI and
OUTPUT LO observing polarity.
3 Verify to 1000 V if power supply is not available. Values in parenthesis are for 1000 V.
b. Adjustments.
(1) Short leads and adjust R111 (fig. 1) for a TI bar graph display of 0 segments.
(2) Set calibrator for an output amplitude of 200 mV and adjust R126 (fig. 1) for a TI
bar graph display of 20 segments.
(3) Set calibrator for an output amplitude of 190 mV and adjust R227 (fig. 1) for a TI
indication of 190.0 (R).
9. Ac Voltage
a. Performance Check
(1) Position TI controls as listed in (a) and (b) below:
(a) AC DC pushbutton to AC (in).
(b) 200 mV, 200 A, 200 Ω pushbutton to in position.
