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FM Stereo Separation Adjustment
Setting:
[SOURCE]
button : FM
FM RF signal
antenna jack (CN11)
generator
0.01 µ F
Carrier frequency : 97.9 MHz
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 33.75 kHz deviation (45%)
sub
: 1 kHz, 33.75 kHz deviation (45%)
:
19 kHz pilot: 7.5 kHz deviation (10%)
Procedure:
FM Stereo
Level meter
signal generator
connection
output channel
L-CH
R-CH
R-CH
L-CH
L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 28 dB
Adjustment Location: See page 17.
level meter
4 Ω
+
set
–
speaker out terminal
Level meter
reading (dB)
A
L-CH
B
L-CH
Adjust RV4 on TU11
for minimum reading.
C
R-CH
D
R-CH
Adjust RV4 on TU11
for minimum reading.
AM Auto Scan/Stop Level Adjustment
Setting:
→
[SOURCE]
[MODE]
AM RF signal
generator
AM dummy antenna
(50 Ω )
Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
: 33 dB (44.7 µ V)
Output level
Procedure:
1. Set to the test mode. (See page 14.)
[SOURCE]
2. Push the
[MODE]
3. Push the
4. Adjust with the volume RV1 on TU11 so that the "AM" indi-
cation turns to "AM0" indication on the display window.
But, in case of already indicated "AM0", turn the RV1 so that
put out light "0" indication and adjustment.
Adjustment Location: See page 17.
– 16 –
button : AM
30 Ω 15 pF
65 pF
set
antenna jack (CN11)
button and set to FM.
button and set to AM .
Display
Display
SHUF1
SHUF1
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