Table 4-14. MODULE TEST SET, VOLUME CONTROL MODULE TEST
All module test set controls must he
preset according to the procedures in
Set METER SCALE to 1.1 v/O dB. Adjust
No significant change in meter reading but
OCILLATOR LEVEL to oddball. Set 20 dB
input signal reduced by 20 dBm.
attenuator switch to IN and INPUT SELECTOR
switch to RCVR/AUDIO.
OUTPUT SELECT switch to OUT. Set HEADSET/
SPEAKER switch of selector module to
HEADSET. Set HEADSET VOLUME control on
volume control module fully CW.
a. If a high degree of regulation is
Meter reading should not increase more than
required, first verify that the meter
reading is between +1 dBm and -2 dBm. If
necessary, adjust R1117 to achieve the
meter reading. Then alternate the 20 dB
attenuator switch from IN to OUT.
b. If no regulation was required, the
Meter reading should be at least +10 dBm as
jumper from E22 to E21 may have been
read on the highest range of METER SCALE
removed. If this is so, R1117 should be
positioned fully CW. Set 20 dB attenuator
switch to IN.