TB 9-6625-1098-24
(6) Repeat technique of (5) above while varying calibrator wideband frequency from
1 to 3 MHz. If calibrator error display does not indicate within 5 percent of reference in (4)
above, perform b below.
(7) Set METER RANGE switch to .003 VOLTS.
(8) Adjust calibrator frequency to 1 kHz and amplitude for a 0.003 V indication on
TI meter. Set the reference level on calibrator by pressing the NEW REF key.
(9) Vary calibrator frequency from 10 Hz to 1 MHz while maintaining a 0.003 V
indication on TI meter. If calibrator error display does not indicate within 2 percent of
reference in (8) above, perform b below.
(10)Repeat technique of (8) above varying calibrator frequency from 1 to 3 MHz. If
calibrator error display does not indicate within 5 percent of reference in (8) above,
perform b below.
(11)Repeat technique of (7) through (10) above for .01, .3, and 3 VOLTS ranges,
using TI meter indications corresponding to METER RANGE switch setting. If calibrator
error display does not indicate within limits specified in (9) and (10) above, perform b below.
b. Adjustments
(1) Set METER RANGE switch to .01 VOLTS.
(2) Adjust calibrator frequency to 1 kHz and amplitude for a 0.01 V indication on TI
meter. Set the reference level on calibrator by pressing the NEW REF key.
(3) Adjust calibrator frequency to 2 MHz and output amplitude for 0.0% error
display reading.
(4) Adjust A2R39 (fig. 1) for a 0.01 V indication on TI meter (R).
(5) Adjust calibrator frequency to 3 MHz and output amplitude for 0.0% error
display reading.
(6) Adjust A2C21 (fig. 1) for a 0.01 V indication on TI meter (R).
(7) Repeat (3) through (6) above as necessary to correct for any interaction between
adjustments.
(8) Set METER RANGE switch to .3 VOLTS.
(9) Adjust calibrator frequency to 1 kHz and amplitude control for a 0.3 V indication
on TI meter. Set the reference level on calibrator by pressing the NEW REF key.
(10) Adjust calibrator frequency to 2.5 MHz and amplitude for 0.0% error display reading.
(11) Adjust S3C6 (fig. 2) for a 0.3 V indication on TI meter (R).
(12) Set METER RANGE switch to 3 VOLTS.
8
