24
FM RF signal
generator
antenna
terminal
set
level meter
4
Ω
SPEAKER OUT
0.01
µ
F
FM RF signal
generator
antenna
terminal
set
level meter
4
Ω
SPEAKER OUT
0.01
µ
F
FM Noise Focus Adjustment
Setting :
FM button : FM
Carrier frequency : 98.0 MHz
Output level
: 60 dB (1 mV)
Mode
: mono
Modulation
: 400 Hz, 22.5 kHz deviation (30%)
Procedure :
1. Tune the 98.0 MHz.
2. The then output level is supposing that (A) dB.
3. Adjust with the volume RV3 on TU1 so that the output level is
(A) –18.5 ± 2 dB then signal generator input set to –20 dB.
Adjustment Location : See page 25.
FM Stereo Separation Adjustment
Setting :
FM button : FM
Carrier frequency : 98.0 MHz
Output level
: 60 dB (1 mV)
Mode
: stereo
Modulation
: main : 400 Hz, 22.5 kHz deviation (30%)
sub : 400 Hz, 22.5 kHz deviation (30%)
19 kHz pilot : 7.5 kHz deviation (10%)
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV4 on TU1
for minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV4 on TU1
for minimum reading.
L-CH stereo separation :
A
–
B
R-CH stereo separation :
C
–
D
The separations of both channels should be equal.
Specification : Separation more than 25 dB
Adjustment Location : See page 25.
Procedure :
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