Comnet MLS II MLSH041, Руководство по обслуживанию

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LBI-38425A ALIGNMENT AND TROUBLESHOOTING PROCEDURES
20
5.2.3 Transmitter Adjustment Procedure
STEP ITEM
TEST
POINT
TUNING
CONTROL PROCEDURE
1 Initial Setting Turn the volume on APC RV1,
RV2 fully counterclockwise
(CCW).
2 Confirming the
voltage
TP4
Disconnect RF cable P101 from
connector J201.
Turn on the power.
Turn on the PTT (ground J701-
2).
Confirm voltage of TR6
collector is 9V at TP4 and that
the relay K1 clicks at this time.
3 Setting APC
off power
RV1
RV2
Connect RF cable P101 to J201.
Turn the volume RV1 on APC
fully clockwise (CW).
Next, turn the volume RV2
slowly CW and set an output of
48W ±2W at the center
frequency of each band.
4 Confirming
minimum
power
RV1 Turn the volume RV1 on APC
fully CCW and confirm
minimum power of 20W or less.
5 Confirming
APC on power
RV1 Turn volume RV1 on APC
slowly CW and set an output of
44W ±2W at the highest
frequency of each band. 40W or
more for other Frequencies.