TB 9-6625-2050-35
PRELIMINARY OPERATIONS
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in tables 2 and 3.
c. 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 manufacturers' manuals for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
WARNING
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
OUTPUTS(S) to minimum after each step within the
performance check where applicable.
c. Set LINE switch to ON and allow 30 minutes for TI to warm-up and stabilize.
CAUTION
To avoid damage to meter, set range calibrator FUNCTION
switch to STANDBY while changing RANGE switch settings
on TI and range calibration.
NOTE
If an out-of-tolerance indication is obtained during any
performance check, re-zero TI as follows: Set range calibrator
FUNCTION switch to STANDBY, then press TI ZERO
(model 435A) switch and wait for meter zero indication (model
435A) to stabilize.
