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|  TM 11-5820-401-34-3/0967-LP-432-3060
5-5. OLD SQUELCH TEST. (CONT)
INITIAL EQUIPMENT CONTROL SETTINGS. Set equipment controls as indicated in the following
table. If using alternate test equipment, adjust for 30.00 MHz, minimum rf input level, 1-kHz
modulation, and 8-kHz frequency deviation.
CONTROL AND SWITCH SETTINGS
CONTROL OR SWITCH
EQUIPMENT
POSITION/SETTING
FREQUENCY TUNING-MC
AN/USM-207
100
POWER
TRACK
DISPLAY
MIN (fully counterclockwise)
INPUT
0.3 V MAX (both switches to left)
103( black knob)
GATE TIME
SENSITIVITY
PLUG IN
FREQ
FUNCTION
DIRECT
DIRECT/HETERODYNE
OPERATE
OPERATE/OFF/STAND BY
AN/URM-103
BAND SWITCH
RF TUNING
30.00
10
DEVIATION RANGE KHZ
FUNCTION
1000 Hz
Adjust for 8-kHz meter indication
DEVIATION
To red line
RF SET TO LINE
LO, 0-10 KUV
RF OUTPUT
Minimum setting
LO RF UV
R-442/VRC
BAND
30. 00
MC-TUNE-KC
OLD ON
SQUELCH
ON
LIGHT
Fully counterclockwise
VOLUME
ON
POWER
TEST PROCEDURE
OLD SQUELCH Test at 30.00 MHz
1.
Adjust AN/URM-103 RF TUNING control for 30.00-MHz display on AN/USM-207.
NOTE
To produce a display on the ANWSM-207, the AN/URM-103 rf level must be increased
by turning the LO RF UV control clockwise. When the display 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 minimum setting.
2 . Disconnect T-connector from AN/USM-207.
3. Turn AN/URM-103 LO RF UV control clockwise until R-442/VRC CALL lamp lights.
5-13
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