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11. Super Linear Converter
@
Required Measuring Equipments
(1)
Distortion Meter:
To be able to measure up to 0.001%.
(2)
Amplifier:
Gain 60 dB, distortion — Jess than 0.1% (electronic VTVM, etc.).
(3)
DENON
TECHNICAL
DISC:
100 Hz /0 dB, 1 kHz / -60 dB.
(4)
Oscilloscope
Note:
Because the unit is precisely adjusted by the factory, do not attempt to adjust the unit easily if the above equip-
ment are not on hand.
Connection Diagram
Oscilloscope
(Fig. 1)
Distortion
CD Player
O
Meter
Distortion
Distorted Component
Monitor Output
Distortion Meter
jAdjustment Point
Confirming Matter
Adjustment Procedure
SLC Volume
|
Oscilloscope
. Connect as per Connection Diagram (Fig. 1).
. Playback DENON TECHNICAL DISC 100 Hz/0dB
(L ch)
100Hz
OdB
oN
tone.
\
LPF
"ON
VR501
OEE
. Adjust the SLC volume controls (1), ), 3), 4)
consecutively and obtain minimum distorted
Observe the dislorted
waveform on the scope.
component of this
portion
. Re-adjust step 3.
Oscilloscope
(ch2)
. Connect as per Connection Diagram (Fig. 2).
. Playback the Test Disc 1 kHz / -60 cB tone.
wo Sw
. Adjust the SLC volume control @) for minimum
SLC Volume
distorted waveform on the scope.
e
Adjust the VRs
. Apply the above adjustments for both channels.
consecutively to
obtain the peak
portions of
distorted com-
ponent become
smooth.
Trigger CH1
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