TB 9-6625-2217-35
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.
Additional maintenance information is contained in the manufacturer's manual and TM 11-
6625-3232-40 for this TI.
d. Unless otherwise specified, all control and control settings refer to the TI.
7. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUPUT(S) to minimum after each step within the performance
check where applicable.
a. Remove protective covers as needed to make adjustments.
b.
Connect TI to
autotransformer and
connect autotransformer to a
115 V ac
source
and adjust for 115 V output.
c. Press POWER ON OFF pushbutton to ON and allow at least 72 hours for
stabilization.
d. TI will assume the following states:
(1) Display 00000000.
(2) Hz, RESOLUTION, FREQ A, INPUT A
and INPUT B
LEDs ON.
(3) INPUT A and INPUT B TRIG LEDs may be ON or OFF.
8. Time Base Stability
a. Performance Check
meter REF INPUT.
(2) Connect TI 10MHz STD. OUTPUT to frequency difference meter SIG INPUT.
(3) Adjust TI rear panel FREQ STD ADJUST FINE and COARSE for a minimum
difference indication on frequency difference meter.
4