TB 9-6625-2798-50
Section III. PRELIMINARY OPERATIONS
3-1. Preliminary Instructions.
WARNING
HIGH VOLTAGE is used during the
a. The instructions outlined in this section are
performance of this calibration.
preparatory
to
the
calibration
process.
DEATH ON CONTACT may result if
Personnel should become familiar with the entire
personnel fail to observe safety
bulletin before beginning the calibration.
precautions.
b. Items of equipment used in this procedure are
NOTE
referenced within the text by common name and
Do not activate tester for periods
item identification as listed in tables 2-1 and 2-2.
exceeding five seconds.
Wait 20
For identification of equipment referenced by
seconds between measurements.
item numbers prefixed with A, see table 2-1, and
for prefix B, see table 2-2.
3-2. Equipment Setup.
Remove the test instrument
cover.
Section IV. CALIBRATION PROCESS
NOTE
4-1. Meter Accuracy (Floor and Equipment).
Unless otherwise specified, verify the
results of each test and take
a. Performance Check.
corrective action whenever the test
requirement is not met before
(1) Short COMMON and FLOOR AND
continuing with the calibration.
EQUIPMENT terminals on the test
instrument.
NOTE
(2) Push PRESS TO TEST button on test
Do not activate tester for periods
instrument and zero the meter. Release
exceeding five seconds.
Wait 20
button.
seconds between measurements.
(3) Remove
shorting
lead
from
test
instrument.
(4) Connect equipment as shown on Figure
but not including 1 megohm.
Figure 4-1. Performance check setup for less than 1 megohm
(floor and equipment)
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