TB 9-6625-2287-35
(6) Set RANGE-FULL-SCALE switch to .01-VOLTS. Adjust calibrator for .003 V ac
output and then adjust adjustment number 6 for a TI indication between .0025 and 0.0035
V ac (ideal .003 V ac) (R).
NOTE
Adjustment numbers 7 through 11 are located from rear to
front on left side of TI cabinet.
(7) Adjust calibrator for .005 V ac output and then adjust adjustment number 7 for
a TI indication between .0045 and 0.0055 V ac (ideal .005 V ac) (R).
(8) Adjust calibrator for .009 V ac output and then adjust adjustment number 8 for
a TI indication between .0085 and 0.0095 V ac (ideal .009 V ac) (R).
(9) Set RANGE-FULL-SCALE switch to .03-VOLTS. Adjust calibrator for 0.025 V ac
output and then adjust adjustment number 9 for a TI indication between .0235 and .0265 V
ac (ideal .025 V ac) (R).
(10) Set RANGE-FULL-SCALE switch to .003-VOLTS. Adjust calibrator for 0.0025
V ac output and then adjust adjustment number 10 for a TI indication between .00235 and
.00265 V ac (ideal .0025 V ac) (R).
(11) Set RANGE-FULL-SCALE switch to .001-VOLTS. Adjust calibrator for
.0009 V ac output and then adjust adjustment number 11 for a TI indication between .0008
and 0.001 V ac (ideal .0009 V ac) (R).
(12) Disconnect RF probe from calibrator.
NOTE
Perform (13) through (22) below for Boonton, Model 91CA with
serial number below 2541.
NOTE
Calibrator operating frequency is 300 kHz.
NOTE
Adjustment numbers 1 through 6 are located from front to rear
on right side of TI cabinet.
NOTE
Ensure RF probe is connected to calibrator WIDEBAND
OUTPUT before proceeding to (13) below.
(13) Set RANGE-FULL-SCALE switch to 1-VOLTS. Adjust calibrator for 0.9 V ac
output at 300 kHz and then adjust adjustment number 1 for TI meter indication between
0.85 and 0.95 (ideal 0.9 V ac).
(14) 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).
(15) Set RANGE-FULL-SCALE switch to .3-VOLTS. Adjust calibrator for .28 V ac
output and then adjust adjustment number 3 for a TI indication between .265 and .295 V ac
(ideal .28 V ac) (R).
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