SECTION III PRELIMINARY OPERATIONS

SECTION III.

PRELIMINARY OPERATIONS

6. Preliminary Instructions. a. The instructions outlined

first aid, is present.

in this section are preparatory to the calibration process.

Personnel should become familiar with the entire bulletin

WARNING

before beginning calibration.

The protective grounding terminals of the

test instrument and the

calibration

SAFETY PRECAUTION

equipment must be connected to the

A periodic review of safety precautions in TB

equipment grounding (safety) conductor of

385-4 is recommended.

When the

the power cords.

For electric shock

equipment is operated with covers removed,

protection use only extension cords and

DO NOT TOUCH exposed connections or

power recepticals with a safety-ground

components. MAKE CERTAIN you are not

connector, or otherwise connect the chassis

grounded when making connections or

to a safety ground system.

adjusting components inside the test

b. Items of equipment used in this procedure are

instrument.

referenced within the text by common name and item

identification number as listed in tables 2 and 3. For

WARNING

identification of equipment referenced by item numbers

HIGH VOLTAGE is used during the

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

performance of this calibration. DEATH ON

CONTACT may result if personnel fail to

c. The remote plug P9014 on video signal source (A6)

observe safety precautions.

must be modified to allow sync and phase lock of the

Fuel Field signal while using a black burst synchronizing

WARNING

signal. Figure 1 shows wiring details to provide this

DO NOT ATTEMPT to make internal

function.

connections or adjustments unless another

person,

capable

performing

Figure 1. Video signal source remote plug wired for

Automatic Video Corrector calibration

b. Connect variable transformer to 115-volt ac

NOTE

source and adjust the output to 115 volts.

Unless otherwise specified, all control and control

c. Set TI switch to ON and allow 15 minutes for

settings refer to the test instrument.

warmup and stabilization.

7. Equipment Setup. a. Connect T1 to variable

d. Connect equipment as shown in figure 2.

transformer (A1).