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5-64
5.23
RCV CRYSTAL OSCILLATOR FREQUENCY CORRECTION
See Figure 5
24 and follow the procedure to correct the receive frequency of the crystal
oscillator on older versions of the UD-36 ( ) receiver module.
Allow a 1-hour warm-up period for radio and test equipment before starting procedure or
improper frequency adjustment can result.
Figure 5
-
24 RCV LO Adjustment
a. SET TO
PED
.
CHAN ALM
EYE
CLOSURE
AFC MON
EYE MON
RSL MON
GND
FREQ
CONT
RECEIVER
XTAL
MON
RF
IN
LMW-6090-SM
05/27/02
c. VERIFY CRYSTAL FREQ IS SAME AS
LABEL. IF NOT, ADJUST FREQ CONT
FOR CRYSTAL FREQ.
d. SET
AFC PED/NORM
SWITCH
TO
NORM
.
b. CONNECT FREQ COUNTER TO
XTAL MON CONNECTOR.
10.650 GHz
142.0000 MHz
LABEL
PED
AFC
NORM
RF FREQ
CRYSTAL FREQ
FREQ
COUNTER
Содержание MDR-8000
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