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Page Title:
SILICON VERSION A5200A SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL. |
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|  TM 11.5820-401-34.3/0967-LP-432-3060
4-24.
A5200 SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL. (CONT)
ALINEMENT PROCEDURE
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 4-vac reading on MM-100E.
4.
Adjust NEW Squelch Resistor R5217 (3) until R-442/VRC CALL light just comes on.
4-25.
SILICON VERSION A5200A SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL.
PURPOSE. This procedure adjusts the receiver sensitivity to the 150-Hz NEW SQUELCH tone.
TEST EQUIPMENT AND MATERIALS
Test Set AN/GRM-114A
Maintenance Kit MK-1978/VRC
Power Supply PP-1104(*)/G
TEST SETUP. Connect the eqipment as shown in setup diagram
Remove R442/VRC top
cover. (See paragraph 2-7.)
4-139
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