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FM ADJUSTMENT
Equipment Required
AM IF/RF signal generator
Solid-state voltmeter (SSVM)
Regulated DC power supply
2-CH voltmeter
Distortion meter
FM Alignment Using FM Signal Generator
Note: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible
to avoid overload and clipping.
Step
Stereo
Signal
Separation
Generator
to antenna
receptacle
FM SNC
98.1 MHz
Adjustment
Dev. 75 kHz
L+R=90 %
Int. 1 kHz
60dBμV output
Stop
Signal Generator
SENS.
to antenna
receptacle
Note: The tuner module is well-adjust and adjustment is not recommended.
ALIGNMENT PROCEDURES
Generator
Generator
Coupling
98.1 MHz
Int. 1 kHz
Dev. 75 kHz
L+R = 90 %
pilot = 10 %
98.1 MHz
@ 40 dBμ
98.1 MHz
Mod. 1kHz
Dev 75kHz
1000 kHz
Mod. 1kHz
Mod 30%
Display
Adjustment
Setting
98.1 MHz
VR3
98.1 MHz
VR2
98.1 MHz
VR4
1000 kHz
VR1
10
Remarks
Adjust AF
output power
at maximum
separating
more than 30 dB
Stereo Separation
25 dB (±5 dB)
Adjust AF to
stop station.
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