TB 9-4931-321-24
(10) Adjust amplitude of function generator for a 0 (zero) dB indication on TI meter.
(11) Function generator output amplitude will not exceed 1 V rms.
indication on TI meter. Adjust function generator amplitude as necessary.
(13) Adjust function generator output amplitude to 1.0 V and adjust GAIN controls
for a 0 (zero) dB indication on TI meter.
NOTE
Strap LOW and GRD terminals on resistance standard.
(14) Disconnect function generator.
Set resistance standard to 5000 ohms and
connect to TI INPUT.
(15) Set RANGE-DB switch to 60.
(16) Average noise level will be at least 7.5 dB down from 0 (zero) on TI meter 0
(zero) to 10 dB scale.
(17) Set RANGE-DB switch to 0 (zero) and INPUT (INPUT SELECTOR) switch to LOW.
(18) Adjust function generator output amplitude for 0.15 V rms.
(19) Disconnect resistance standard and reconnect function generator to INPUT.
Adjust GAIN control as required.
control for a 0 (zero) dB indication on TI meter.
(21) Disconnect function generator. Set resistance standard to 100 ohms and connect
to INPUT.
(22) Set RANGE-DB switch to 60 and repeat (16) above.
(23) Set RANGE-DB switch to 0 (zero).
b. Adjustments. No adjustments can be made.
10. Input Frequency
a. Performance Check
(1) Connect function generator to TI INPUT using 50
termination.
(2) Set EXPAND switch to 0 (zero) and turn GAIN and FREQ controls
fully clockwise.
(3) Adjust function generator output amplitude for on-scale indication on TI meter.
Adjust function generator frequency to obtain peak indication on TI meter. Readjust
function generator output amplitude to obtain a 0 (zero) dB indication on TI meter 0 (zero)
to 2 dB scale. Function generator frequency display will indicate 1020 Hz or more.
Record function generator frequency indication.
(4) Turn FREQ control fully counterclockwise.
(5) Adjust function generator frequency to obtain peak indication on TI meter. If
necessary, adjust function generator output amplitude to maintain on-scale indication on TI