Section III PRELIMINARY OPERATIONS

TB 55-4920-431-35

Section III

PRELIMINARY OPERATIONS

Preliminary

Instructions.

a. The instructions outlined in this section are preparatory to the calibration

process. Personnel should become familiar with the applicable sections before

beginning the calibration.

b . Items of equipment used in this procedure are referenced within the text by

common name and item identification number as listed in tables 2, 3, and 4. For

the identification of equipment referenced by item numbers prefixed with A (See

table 2), for prefix B (See table 3), and for prefix C (See table 4).

HIGH VOLTAGE is used or exposed during the

performance of this calibration. DEATH ON

CONTACT may result if personnel fail to

observe safety precautions.

Unless otherwise specified, all controls and

control settings refer to the TI.

Equipment Setup.

Set all switches on TI to down position.

Check both TI meters for mechanical zero and adjust if necessary.

Connect test equipment as shown in figure 1 connection A.

d. Adjust DC power supply (A4) for 28 vdc + 0.5 vdc as indicated on digital

multimeter (A1).

Test equipment power will be switched off

before making or removing jumper and/or

test equipment connections.