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FM MPX VCO ADJUSTMENT
FM SIGNAL GENERATOR CONDITION
-
1. Test equipment connection is shown in figure.
MOHUISU GN sacra
ginity ae
dulati
2. Set the unit to 'FM auto" position.
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3. Set the radio frequency display and signalgenerator
== # =
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FREGUENCY
FM ANTENNA
COUNTER
TERMINAL
to 100:10 MHz.
4. Adjust VR301 for 19.00 +0.03kHz on frequency
counter reading.
%* USING ALTERNATE SYSTEM
1. Apply stereo signal from generator or receive the
stereo broadcast.
2. Adjust VR301 until stereo indicator lights up.
Cement arm of VR301 as shown in figure.
@) -
© - ®
Stereo OFF position
@ - ©
: Stereo ON position
(indicator lighting)
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Adjust point of Plot circurt
FM SIGNAL GENERATOR CONDITION
Modulation...
.cessccssceseeeees Stereo "L" mode or "R"
mode 100%
FM IFT (FM STEREO DISTORTION) ADJUSTMENT
1. Test equipment connection is shown in figure.
2.Set the unit to "FM" mode.
Modulation frequency........... 1kHz (Pilot 19kHz)
3. Set the radio frequency display and signal generator to
OUtPUt OVE... ercsecerereeneens 66dB
100.10 MHz.
4. Adjust L1so that the distortion factor of L-CH is minimized.
5. Make sure that the distortion factors of L-CH and R-CH are
3) pe] eas)
nearly the same with each other to minimum.
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Notes:
1. The adjusting screwdriver used should be made of resin.
2. L1 should be rotated no more 1/4 turn (90 deg.) on either
side.
Stereo modulator
Adjust within +90°
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