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TB 9-6625-1996-35
4
SECTION III
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instruction outlined in paragraphs 6 and 7 are preparatory to the calibration
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 table 2.
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 manufacturer's manual 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
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Remove protective cover from TI only when necessary to make adjustments.
Replace cover after completing the adjustments.
b. Connect TI rear panel DIGITAL BUS 1.0 LOAD to controller GPIB0 (opt 12
only).
c. Connect TI to autotransformer, connect autotransformer to a 115 V ac source and
adjust for 115 V ac output.
d. Set POWER switch to ON and allow at least 1 hour for stabilization. If TI has
been disconnected from line power for more than 24 hours, allow at least 24 hours for
warmup before beginning calibration.
e. Set TI rear panel INT STD/EXT STD switch to INT STD and INTERNAL/EXT
ARM/EXT GATE switch to INTERNAL (OPT 12 only).
f. Position controls as listed in (1) through (10) below:
(1) FUNCTION switch to FREQ A.
(2) GATE TIME switch to 100 ms.
(3) DISPLAY POSITION switch to AUTO.