TB 9-4920-451-24
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.
CAUTION
This TI shall be powered by 115 V ac, 400 Hz only. Connection
to 115 V ac, 60 Hz will damage the TI.
a. Open the TI and remove accessory cover.
b. Set MODE SELECT switch to OFF position.
c. Connect power cable to TI at receptacle marked CAUTION: CONNECT TEST SET
TO 115 V 400 HZ POWER ONLY.
d. Connect adapter cable SP 10008521 (p/o TI) to power cable.
CAUTION
Verify that 400 Hz power source is turned off.
e. Connect three leads of adapter cable (p/o TI) to 400 Hz power source as listed in
(1) through (3) below:
(1) Black - high side of output.
(2) White - low side of output.
(3) Green - ground on power source.
f. Set TI MODE SELECT switch to MEAS EXT position. Turn on 400 Hz power
source. Allow a 5 minute warm-up period.
8. Internal Calibration
a. Performance Check
(1) Set switches as listed in (a) and b below:
(a) T/U COMP to T/U position.
(b) RANGE to LO position.
(2) Open the CALIBRATION ADJUSTMENT cover (fig. 1) and set all switches to
OUT position.