Section III. PRELIMINARY OPERATIONS

Section III. PRELIMINARY OPERATIONS

TB 11-6625-2932-35

6. Preliminary Instructions. a. The instruction outlined

tenance information is contained in

in this section are preparatory to the calibration process.

the manufacturer's manual for this

Personnel should become familiar with the entire bulletin

Test Instrument.

before beginning the calibration.

b. Items of equipment used in this procedure are

NOTE

referenced within the text by common name and item

Do not perform power voltages and

number identification as listed in table 2 and 3. For the

current check unless out of tolerance

identification of equipment referenced by item numbers

conditions in the preceeding checks

prefixed with A, see table 2, and for prefix B, see table 3.

cannot be corrected by adjusting the

WARNING

specified component

HIGH VOLTAGE is used during the

7. Equipment Setup.

performance of this calibration.

NOTE

DEATH ON CONTACT may result if

Determine if the TI being calibrated is

personnel fail to observe safety pre-

the special version that operates from

cautions

a 60Hz power frequency source or the

NOTE

version that operates from a 50Hz

power frequency source before apply-

Unless otherwise specified, verify the

ing power.

results of each test and, whenever the

test requirement is not met, take

corrective action before continuing

a. Set TI front panel switch 110V 125V 150V 220V

with the procedure. Additional main-

240V to the appropriate setting according to the available

voltage source to be used.

b. Energize TI and allow sufficient time for warmup and

stabilization.

Section IV. CALIBRATION

(2) Connect audio oscillator (Al) to TI ground and to

8. Deflection Voltage. a. Performance Check.

contact 4 (fig. 1) of the socket for relay T rls 43.

(1) Set TI shift control to a midrange position and

the changeover switch to distortion.

Figure 1. A. Socket for relay, pin connections.

B. Cathode ray relay tester, display.