Equipment Setup

TB 9-4920-362-35

NOTE

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 TM 55-

4920-414-13&P for this TI.

NOTE

Unless otherwise specified, all controls and control settings

refer to the TI.

7. Equipment Setup

a. Position controls as listed in (1) through (6) below:

(1) AC POWER switch to OFF.

(2) DC POWER switch to OFF.

(3) TRIM switch to OFF.

(4) SAS switch to OFF.

(5) BOOST switch to OFF.

(6) POWER AC and DC circuit breakers to IN.

b. Connect autotransformer (A1) to AC POWER connector, using cable supplied with

TI.

c. Connect autotransformer to a 115-V ac, 60-Hz power source and adjust for 115-V ac

output.

d. Connect dc power supply (A2) positive terminal to DC POWER connector pin B and

negative terminal to pin A, using two leads (B5).

e. Connect digital voltmeter (A4) to dc power supply, using leads (B3 and B4).

f. Adjust dc power supply for a 28-V dc indication on digital voltmeter and then

disconnect digital voltmeter from equipment setup.

g. Set AC POWER and DC POWER switches to ON and allow at least 20 minutes for

equipment to warm-up.