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
of
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).
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