TB 9-6625-160-24
(31) Set CALIBRATOR frequency to 100 kHz. Adjust A2C110 for a reading between
99.50 and 100.5%. Repeat technique of (30) and (31) as often as needed until flatness at
40 kHz and 100 kHz is within limits specified.
(32) Repeat paragraph 9 above.
10. DC Level Accuracy
a. Performance Check
(1) Press TI numerical key for 41.0 and then SPCL key to initialize TI.
(2) Set MEASUREMENT mode to DC LEVEL and INPUT and OUTPUT float
switches to ground.
(3) Connect CALIBRATOR OUTPUT terminals to TI INPUT HIGH connector
observing polarity.
(4) Set CALIBRATOR to first value listed in table 13.
(5) Set CALIBRATOR OPR/STBY switch to OPR.
(6) TI right display must indicate within limits specified in table 13 below.
(7) Repeat technique of (4) through (6) above for first five parameters and limits
listed in table 13 (5 measurements).
(8) Set CALIBRATOR OPR/STBY switch to STBY.
(9) Set TI INPUT FLOAT switch to FLOAT. Move cable from INPUT HIGH
connector to INPUT LOW connector. Short INPUT HIGH connector to ground.
(10) Repeat technique of (4) through (7) above for each value listed in table 13. TI
indication will be negative (5 measurements).
Table 13. DC Level.
Calibrator
TI Limits (V dc)
(V dc)
Low
Indication
High
300
297
303
30
29.7
30.3
3
2.97
3.03
0.4
0.394
0.406
0.04
0.034
0.046
300
-297
-303
30
-29.7
-30.3
3
-2.97
-3.03
0.4
-0.394
-0.406
0.04
-0.034
-0.046
(11) Disconnect test setup. Remove ground from TI INPUT HIGH connector
b. Adjustments. Perform adjustments in paragraph 17 below.