TB 9-6625-121-24
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
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Set TI rotary switch to V
.
b. Allow 5 minutes for warm up.
8. Dc Voltage
a. Performance Check
and COM inputs.
(1) Connect calibrator to TI V Ω
(2) Set calibrator output for 360.0 mV.
If TI does not indicate within limits
specified in first row of table 3, perform b below.
(3) Repeat technique of (2) above, using settings and indications listed in table 3. If
TI does not indicate within limits specified in table 3, perform b below.
Table 3. Dc Voltage Accuracy.
Calibrator Output
Test instrument
(dc)
Range
Min
Max
360.0
mV
400
mV
359.5
360.5
3.6
V
4.000
V
3.595
3.605
5
V
40.00
V
4.98
5.02
12
V
40.00
V
11.98
12.02
-20
V
40.00
V
-20.03
-19.97
20
V
40.00
V
19.97
20.03
28
V
40.00
V
27.96
28.04
36
V
40.00
V
35.95
36.05
360
V
400.0
V
359.5
360.5
900
V
1000
V
898
902
(4) Set calibrator output to minimum.
b. Adjustments. No adjustments can be made.