TB 9-6625-1924-24
indicated on multimeter.
(8) Adjust function generator for zero reference.
(9) Disconnect multimeter from test setup.
(10) Vary function generator frequency from 10 Hz to 1 MHz, while maintaining an
indication of 1 on TI meter 0 to 1 scale. If function generator does not indicate within 2
percent, perform b (3) and (4) below.
(11) Repeat technique of a (6) through (10) above for TI RANGE switch settings of
.03, .1, .3, 1, and 3. If function generator does not indicate within 2 percent on 3 volt
range, perform b (5) and (6) below.
b. Adjustments
(1) Adjust calibrator to 10.000 millivolts.
(2) Adjust A2R17 10mV 400 CPS ADJ (fig. 1) until TI meter indicates 1 on 0 to 1
scale (R).
(3) Adjust function generator frequency to 1 MHz and output for zero reference on
expand scale.
(4) Adjust A2C3 10mV IMC ADJ (fig. 1) until TI meter indicates 1 on 0 to 1 scale or
best in-tolerance condition (R).
(6) Adjust C3 3V 100KC ADJ (fig. 2) until TI meter indicates 3 on 0 to 3 scale (R).
12. Ac Rejection
a. Performance Check
(1) Turn TI FUNCTION switch to +DCV and RANGE switch to .1.
(2) Short VOLTS to COM terminal and adjust DC ZERO/
for zero indication.
Remove short.
(3) Connect calibrator to TI VOLTS and COM terminals.
(4) Adjust calibrator frequency to 400 Hz and output to 7.07 volts. TI meter will
indicate 0 on 0 to 1 scale 1 minor scale division.
(5) Turn TI RANGE switch to 1.
(6) Adjust calibrator output to 70.7 volts. TI meter will indicate 0 on 0 to 1 scale 1
minor scale division.
b. Adjustments. No adjustments can be made.