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Page Title:
A5200 SQUELCH AMPLIFIER ALINEMENT, OLD SQUELCH LEVEL. |
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|  TM 5820-401-34-3/0967-LP-432-3060
4-25.
SILICON VERSION A5200A SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL. (CONT)
1.
Lift R-442/VRC A3000 tray (1). (See test setup diagram
2.
Connect MM-100E attenuated probe A to TP5008 (2). Connect alligator clip B to
ground.
3.
Adjust AN/GRM-114A VAR control (deviation control) for 0.20 0.01 vac reading on
MM-100E.
4.
Adjust NEW Squelch Resistor R5217 (3) until R-442/VRC CALL light just comes on.
4-26.
A5200 SQUELCH AMPLIFIER ALINEMENT, OLD SQUELCH LEVEL.
PURPOSE. This procedure adjusts the receiver sensitivity to the OLD SQUELCH signals which
include internal noise and the received carrier.
TEST EQUIPMENT AND MATERIALS
Maintenance Kit MK-1978/VRC
Test Set AN/GRM-114A
Power Supply PP-1104(*)/G
TEST SETUP. Connect the equipment as shown in test setup diagram
. Remove R-442/VRC top
cover. (See paragraph 2-7.)
4-142
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