TB 9-6625-2287-35
(16) Set RANGE-FULL-SCALE switch to A-VOLTS. Adjust calibrator for 0.03 V ac
output and then adjust adjustment number 4 for a TI indication between .025 and .035 V ac
(ideal .03 V ac) (R).
(17) Adjust calibrator for 0.09 V ac output and then adjust adjustment number 5 for
a TI indication between .085 and .095 V ac (ideal .09 V ac) (R).
(18) Set RANGE-FULL-SCALE switch to .03-VOLTS. Adjust calibrator for .028 V ac
output and then adjust adjustment number 6 for a TI indication between .0265 and .0295 V
ac (ideal .028 V ac) (R).
NOTE
Adjustment numbers 7 through 9 are located from rear to front
on left side of TI cabinet.
(19) Set RANGE-FULL-SCALE switch to .01-VOLTS. Adjust calibrator for .009 V ac
output and then adjust adjustment number 7 for a TI indication between .0085 and 0.0095
V ac (ideal .009 V ac) (R).
(20) Set RANGE-FULL-SCALE switch to .003-VOLTS. Adjust calibrator for
0.0028 V ac output and then adjust adjustment number 8 for a TI indication between
.00265 and .00295 V ac (ideal .0028 V ac: ) (R).
(21) Set RANGE-FULL-SCALE switch to .001-VOLTS. Adjust calibrator for 0.0009
V ac output and then adjust adjustment number 9 for a TI indication between .0008 and
.001 V ac (ideal .0009 V ac) (R).
(22) Disconnect RF probe from calibrator.
NOTE
Perform (23) through (33) below for AN/URM-145A
(ME-247A/U) (Boonton, Model 91CA) with serial number 2661
and above.
NOTE
Adjustment numbers 1 through 6 are located from front to rear
on right side of TI cabinet.
NOTE
Calibrator operating frequency is 300 kHz.
NOTE
Ensure RF probe is connected to calibrator WIDEBAND
OUTPUT before proceeding to (23) below.
(23) Set RANGE-FULL-SCALE switch to 1-VOLTS. Adjust calibrator for 0.3 V ac
output at 300 kHz and then adjust adjustment number 1 for TI meter indication between
0.25 and 0.35 (ideal 0.3 V ac).
(24) Set RANGE-FULL-SCALE switch to 3-VOLTS. Adjust calibrator for 2.5 V ac
output and then adjust adjustment number 2 for a TI indication between 2.35 and 2.65 V ac
(ideal 2.5 V ac) (R).
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