TB 9-6625-199-24
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
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. If applicable, ensure TI DATA HOLD switch is off during performance checks.
b. Zero TI range/function as necessary.
c. Throughout the performance checks, all reference to Range, Applied and Limits
columns are in reference to appendix B.
8. Dc Voltage
a. Performance Check
(1) Connect TI DC VOLTS terminals to calibrator OUTPUT terminals, observing
polarity.
(2) Set TI controls for the first range listed in the Range column. Some TIs require
the test leads be changed to different jacks for range changes.
(3) Set calibrator for the first value listed in the Applied column and set OPR/STBY
switch to OPR. If TI indication is not within limits specified, perform b below.
(4) Repeat technique of (2) and (3) above for remaining ranges and applied values
listed in Range and Applied columns. If TI indication is not within limits specified, perform
b below.
(5) If applicable, disconnect equipment setup.
b. Adjustments. Refer to TI manufacturer's manual for corrective action.
9. Ac Voltage
a. Performance Check
(1) Connect TI AC VOLTS terminals to calibrator OUTPUT terminals, observing
polarity.
(2) Set TI controls for the first range listed in the Range column. Some TIs require
the test leads be changed to different jacks for range changes.
NOTE
For voltages above 220 V ac @ frequencies ≥1 kHz, use
calibrator amplifier and set BOOST On when required.
(3) Set calibrator for the first value listed in the Applied column and set OPR/STBY
switch to OPR. If TI indication is not within limits specified, perform b below.