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|  TM 11-5820-401-34-3/0967-LP-432-3060
5-2. VOLUME CONTROL TEST. (CONT)
Turn on test equipment. Allow at least 15 to 30 minutes for warmup.
INITIAL EQUIPMENT CONTROL SETTINGS. Set equipment controls as indicated in the following
table. If using alternate test equipment, adjust for 30.00 MHz, 20-v rf input level, 1-kHz modulation,
and 8-kHz frequency deviation.
CONTROL AND SWITCH SETTINGS
CONTROL OR SWITCH
POSITION/SETTING
EQUIPMENT
100
FREQUENCY TUNING-MC
AN/USM-207
POWER
TRACK
MIN (fully counterclockwise)
DISPLAY
INPUT
0.3 V MAX (both switches to left)
103 (black knob)
GATE TIME
PLUG IN
SENSITIVITY
FREQ
FUNCTION
DIRECT
DIRECT/HETERODYNE
OPERATE
OPERATE/OFF/STAND BY
AN/URM-103
BAND SWITCH
30.00
RF TUNING
10
DEVIATION RANGE KHZ
1000 Hz
FUNCTION
Adjust for 8-kHz meter indication
DEVIATION
To red line
RF SET TO LINE
LO, 0-10 KUV
RF OUTPUT
20 v
LO RF UV
A
BAND
R-442/VRC
30. 00
MC-TUNE-KC
OLD OFF
SQUELCH
ON
LIGHT
Fully counterclockwise
VOLUME
ON
POWER
TEST PROCEDURE
1.
Adjust AN/URM-103 RF TUNING control for 30.00-MHz display on AN/USM-207,
NOTE
To produce a display on the AN/USM-207, the AN/URM-103 rf level must be increased
by turning the LO RF UV control clockwise. When the dispiay appears, readjust the
AN/URM-103 RF TUNING control until the AN/USM-207 indicates 30.00 MHz, and reset
the LO RF UV control to 20 v.
2.
Disconnect T-connector from AN/USM-207.
Turn R-442/VRC VOLUME control fully clockwise, then fully counterclockwise.
3.
5-3
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