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|  TM 11-5820-401 -34-3/0967- LP-432-3060
RECEIVER SELECTIVITY TEST. (CONT)
5-10.
INITIAL EQUIPMENT CONTROL SETTINGS. Set equipment controls as indicated in the following
table. If alternate test equipment is used, adjust for 30 MHz, minimum rf input level, no modulation.
CONTROL AND SWITCH SETTINGS
CONTROL OR SWITCH
POSITION/SETTING
EQUIPMENT
100
FREQUENCY TUNING-MC
AN/USM-207
POWER
TRACK
DISPLAY
MIN (fully counterclockwise)
INPUT
0.3 V MAX (both switches to left)
103 (black knob)
GATE TIME
SENSITIVITY
PLUG IN
FUNCTION
FREQ
DIRECT
DIRECT/HETERODYNE
OPERATE/OFF/STAN D BY
OPRATE
AN/URM-103
BAND SWITCH
30.00
RF TUNING
10
DEVIATION RANGE KHZ
FUNCTION
MOD OFF
RF SET TO LINE
To red line
LO, 0-10 KUV
RF OUTPUT
Minimum setting
LO RF UV
R-442/VRC
BAND
MC-TUNE-KC
30.00
SQUELCH
OLD ON
LIGHT
ON
VOLUME
Fully counterclockwise
POWER
ON
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 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 slowly clockwise until R-442/VRC CALL lamp lights. Note
control setting,
4.
Increase AN/URM-103 LO RF UV level to twice the reading noted in step 3.
5-31
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