TB 9-6625-142-24
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manuals for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
and COM inputs.
a. Connect calibrator to TI
and range to 200 mV.
b. Set TI function switch to DC (volts)
8. DC Voltage
a. Performance Check
(1) Set calibrator output for 180 mV. TI will indicate within limits specified in table 3
for the 200 mV range.
(2) Set TI ranges, and calibrator outputs for the remaining values in table 3. TI will
indicate within the limits in table 3 for the range being tested.
Table 3. Dc Voltage Accuracy.
Test Instrument
Calibrator
Limits
Output
RANGE
(V dc)
(V dc)
(V dc)
Min
Max
180 m
200 m
178.1 m
181.9 m
1.8
2
1.781
1.819
6
20
5.930
6.070
14
20
13.85
14.15
1
18
20
17.81
18.19
180
200
178.1
181.9
540
600
534.5
545.5
Check at + and -18 V.
1
(3) Set calibrator output to minimum.
b. Adjustments. No adjustments can be made.
9. AC Voltage
a. Performance Check
and range to 200 mV.
(1) Set TI function switch to (AC volts)
(2) Set calibrator for an output of 180 mV ac at a frequency of 45 Hz. TI will
indicate within limits specified in table 4 for the 200 mV range with a calibrator output
frequency of 45 Hz.
(3) Repeat technique of (2) above for the 200 mV range @ 500 Hz. TI will indicate
within limits specified in table 4 for the 200 mV range with a calibrator output frequency of
500 Hz.