TB 9-4935-364-24
7. Equipment Setup
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.
CAUTION
Before connecting or disconnecting standards to TI, set
function switch to DISCHARGE.
NOTE
Unless otherwise specified, verify the result of each test and,
whenever the test requirement is not met, take corrective
action before continuing with the calibration. Adjustments
required to calibrate the TI are included in this procedure.
Additional maintenance information is contained in the
manufacturer's manual for this TI.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
reading.
a. Adjust meter mechanical zero adjustment for a
b. Set switch on rear panel to 100-125 V.
c. Remove protective cover from TI only if adjustments are required.
d. Connect case and GUARD terminals together, if necessary, with shorting links.
e. Position controls as listed in (1) through (5) below:
(1) TEST VOLTAGE controls to 1-0-0V.
(2) Multiplier switch to 10T.
(3) Function switch to DISCHARGE.
(4) POWER-OFF switch to OFF.
and SET
HIGHEST RANGE controls fully ccw.
(5) Adjust SET
f. Connect TI to autotransformer (A1).
g. Connect autotransformer to a 115 V source and adjust for 115 V.
h. Turn POWER-OFF switch to POWER and allow at least 30 minutes for warm-up.
indication on TI meter. If SET
,
i. Adjust SET control for
control cannot be set to
perform j and k below.
and SET
HIGHEST RANGE controls to midrange.
j.
Adjust SET