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AVR300 SURROUND SOUND RECEIVER
FM/RDS SECTION
- FM mono: 1kHz, 75kHz devi., 60dB/µV
- FM stereo: 1kHz, 67.5kHz devi., 60dB/µV
Pilot signal 19kHz 7.5kHz devi.
OUTPUTS
- Connect the non-inductive type resistor of 8 ohms to the all speaker terminals unless otherwise noted.
Item Step
Connec-
tion of
instru-
ment
FM SG output
Stereo
modula-
tor output
Tuning
frequency
Output
indicator
Adjustment
point
Adjust for Remarks
FM
IF/RF
1
Fig.1
99.0MHz 1kHz
75kHz devi.
66dBf (60dB)
— 99.0MHz
DC volt-
meter
L941 0±100mV
FM MUTE/MODE
switch: ON/AUTO
Repeat the steps 1
to 3 until no further
adjustment is neces-
sary.
2
AC volt-
meter
IFT on the
front end
Maximum
3
Distortion
analyzer
L942 Minimum
Stereo
Distor-
tion
Fig.2
99.0MHz Ext.
mod. 66dBf
(60dB)
Channel
L or R
1kHz
99.0MHz
Distortion
analyzer
IFT on the
front end
Minimum
FM MUTE/MODE
switch: ON/AUTO.
Don’t turn more than
+/-180°.
Stereo
Sepa-
ration
Fig.2
99.0MHz Ext.
mod. 66dBf
(60dB)
Channel
L or R
1kHz
99.0MHz
Oscillo-
scope
R956
Maximum
Separa-
tion
Repeat stereo
distortion and stereo
separation align-
ment until THD at
minimum and sepa-
ration at maximum.
Muting
Level
Fig.1 99.0MHz 22dB — 99.0MHz
Oscillo-
scope
R941
Signal
output
RDS Fig.3
99.0MHz Ext.
mod. 66dBf
(60dB) RDS
4% MOD
— 99.0MHz — — —
Decode the RDS
Program Station.
AM SECTION
AM Modulation: 400Hz, 30%
For UL Version
Step AM SG output Tuning frequency Output indicator Adjustment point Adjust for
1— 530kHz Digital DC voltmeter QSC coil on RF block M971 1.35±0.2V
2
600kHz
400Hz 30% mod.
60dB/M
600kHz AC voltmeter RF coil on RF block M971 Maximum
3
600kHz
400Hz 30% mod.
60dB/M
990kHz AC voltmeter L972 Maximum
For CE Version
Step AM SG output Tuning frequency Output indicator Adjustment point Adjust for
1—522kHz or 531kHz Digital DC voltmeter QSC coil on RF block M971 1.35±0.2V (531kHz)
2
600kHz
400Hz 30% mod.
60dB/M
603kHz AC voltmeter RF coil on RF block M971 Maximum
3
600kHz
400Hz 30% mod.
60dB/M
999kHz AC voltmeter L972 Maximum
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