12
RX-V10MK
2
2
2
2
2
1. Befor Adjustment
●
For dB
µ
, 1
µ
V=0dB
µ
applies.
Example : 60dB
µ
=1mV
●
100% modulation means that the frequency deviation is
±
75kHz.
●
Install the Matching Transformer and connect FM SG.
2. Connection diagram (Measuring instruments)
●
Discriminator balance adjustment.
FM Adjustment
●
Set each switch to the following position unless otherwise
specified.
INPUT SELECTOR ....... TUNER
TUNING MODE ............. AUTO
●
Stereo distortion adjustment/separation adjustment.
●
Monaural distortion adjustment
●
Sensitivity Verfication
See page 11 for TP locations & adjustment points.
Signal (ANT IN)
Test point
Rating
Reception
frequency
Adjustment
point
Rough adjustment of
discriminator balance
FM ANT (75
Ω
)
98.1MHz
70dB
µ
MONO 100Hz
100% modulation
98.1MHz
✽
(A-4)
T1
(Front side core)
Both ends of R25
(Between TP1 and TP2)
DC 0V
±
100mV
Rough adjustment of
monaural distortion
Same as Step 1.
98.1MHz
✽
(A-4)
T1
(Antenna side core)
REC OUT L, R
Minimize the distortion.
2
Fine adjustment of
discriminator balance
Same as Step 1.
98.1MHz
✽
(A-4)
T1
(Front side core)
Both ends of R25
(Between TP1 and TP2)
DC 0V
±
50mV
3
Fine adjustment of
monaural distortion
Same as Step 1.
98.1MHz
✽
(A-4)
T1
(Antenna side core)
REC OUT L, R
Minimize the distortion
(to –44dB or less).
4
Verification of
discriminator balance
Same as Step 1.
98.1MHz
✽
(A-4)
T1
(Front side core)
Both ends of R25
(Between TP1 and TP2)
DC 0V
±
50mV
5
✽
Execution of MAKER PRESET (Refer to page 7.) will faciltate setting reception frequency for adjustment.
FM
SG
FM
dummy
antenna
TUNER
P. C. B.
DCVM
Oscillator
FM
ANT
GND
TP1
TP2
R25
FM
SG
FM
dummy
antenna
TUNER
P. C. B.
SSG
FM
ANT
GND
FM
SG
FM
dummy
antenna
TUNER
P. C. B.
Oscillator
FM
ANT
GND
FM
SG
FM
dummy
antenna
TUNER
P. C. B.
FM
ANT
GND
REC
OUT
L
R
YLF-
15(LPF)
Oscilloscope
ACVM
DIST. M
ACVM
DIST. M
REC
OUT
DIST. M
REC
OUT
L
R
Oscilloscope
Oscilloscope
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