TB 9-4920-456-24
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Unlatch and remove transit cover from TI and set TI on work surface with front
panel vertical.
b. Connect calibration test fixture to transponder test set connector on TI front panel.
c. Set all TI toggle switches (except POWER switch) to up position. Ensure POWER
switch is in OFF position.
d. Set all switches on calibration test fixture to OFF position.
e. Connect TI to a 115 V ac 400 Hz source A+, D-.
f. Set TI power switch to ON, and permit self-test to complete its cycle.
NOTE
When self-test is completed, the displayed messages either
indicate that self-test was passed, and TI is now connected for
TESTING, or display a SELF TEST FAILED message (with
probable causes of the failure).
g. Allow TI to warm-up for 1 hour before proceeding to next paragraph.
8. Multimeter Function Test
a. Performance Check
(1) Connect multimeter (ac mode) to VOLTMETER (PWR) test jacks on calibration
test fixture.
(2) Set calibration test fixture LOAD SELECT S3 switch to 1 and DC/AC S5 switch
to AC.
(3) Press AC V key on TI METER SELECT keyboard.