TB 9-6625-2253-24
d. Unless otherwise specified, all control and control settings refer to the TI.
7. Equipment Setup
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. Remove protective cover from TI only when necessary to make adjustments.
Replace cover after completing the adjustments.
b. Position TI controls as follows:
(1) POWER switch to ON.
(2) PEAK HOLD switch to OFF.
(3) 200 mV pushbutton to in position.
(4) All other pushbuttons to out position.
8. Dc Voltage
a. Performance Check
(1) Connect TI V/:/S and COMMON to calibrator.
(2) Set calibrator output for 190.0 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 the settings and indications listed in table 3.
TI will indicate within limits specified in table 3.
Table 3. Dc Voltage Accuracy
Test instrument
Calibrator
Indication limits
output
Range setting
Min
Max
190 mV
200 mV
189.7 mV
190.3 mV
200 mV
190 mV
190.3 mV
189.7 mV
1.9 V
2V
1.897 V
1.903 V
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
V
1002
V
(4) Set calibrator output to minimum and disconnect equipment setup.
b. Adjustment. Set calibrator output for 190.0 mV and adjust DC CAL R6 (fig. 1)
until TI indicates 190.0 (R).