Equipment Setup

TB 9-4920-451-35

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.

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.