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Signal of System Control Connector
CNJ901
SYSTEM CONTROL
1
@
| ST- V502
CNJ701
SYSTEM CONTROL
2
@
SECTION
2
ELECTRICAL ADJUSTMENTS
FM DISCRIMINATOR ADJUSTMENT
Setting:
FM rf signal
generator
set
NULL
Terminal
o_O
0
| {
|
|
Procedure :
1.
Tune the set to 98MHz.
2.
Adjust T21 for 0V reading on the VOM.
Note:
FM
tuning level adjustment should be made after FM
discriminator alignment.
FM TUNING LEVEL ADJUSTMENT
Setting :
FM rf stereo signal
generator
FM75Q
terminals
Carrier frequency:
. 98MHz
Modulation :
LkHz, 40kHz deviation (100%)
Output level :
17.8uV (25dB)
Procedure:
1.
Tune the set to 98MHz.
2.
Adjust RV24 so that the TUNED LED goes on.
FM STEREO
SEPARATION
ADJUSTMENT
Procedure:
FM rf stereo
Signal
generator
VTVM
FM75Q
OUTPUT
terminals
CNJ702@
= L-CH
Carrier frequency :
98MHz
@: R-CH
Output level :
ImV (60dB)
Modulation
Audio 400Hz :
16.25kHz deviation
Sub channel 38kHz :
Pilot signal 19kHz:
16.25kHz deviation
7.5kHz deviation
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