Yamaha AVC-50 Owner's Manual page 16

Natural sound stereo amplifier
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16
The Video Enhancer boosts high frequency information,
enabling Ë to increase both detail and sharpness. Since
image enhancement is proportional to source material
quality, the better the original, the greater the improvement.
Poor source material can only be enhanced with minimal
results. This is due in part to the fact that video noise (snow)
is in the same frequency range as detail and sharpness, so
when you enhance detail and sharpness, you also enhance
snow. (Snow is comparable to hiss in a high fidelity audio
system.)
When recording from a camera or television tuner use the
Video Enhancer to exaggerate detail, This will pre-
compensate for the loss of quality due to the video cassette
recorder and produce a tape with alf of the original detail,
When making tape duplicates, use the Video Enhancer to
retain most of the originals detail and sharpness. If the
original is very snow-free, the copy can look better.
When viewing à video tape recording, use the Video
Enhancer to compensate for lose of quality due to the video
cassette recorder.
Controls
the ON/OFF switch is used to engage the Video Enhancer
circuits, Press the switch once to turn the Enhancer on (the
switch stays in). Press it again to turn the Enhancer off.
The PB/REC (Playback/Recording) switch is used to select
the signal to be enhanced. When the switch is out, video
enhancing is performed on the video source signal being
monitored. When the switch is depressed, video enhancing
is performed on the video signal going to a video recorder.
If this switch is pressed during video recording, the picture
will go blank for a few moments.
Effects
and the PB/REC switch is out.
2. Select a broadcast program to obtain a high-quality
source image, Remember, the better the source, the more
obvious the enhancement.
6. Turn the SHARPNESS control and note its effect. The
edges and contours of objects and people should increase
in sharpness as you turn the control clockwise. If you
continue to tura the control clockwise, sharpness will be
exaggerated and false outlines will be created. Turn it back
to a desirable level, where the outlines are acceptable and
the images natural. Note the controls position
8. Return the SHARPNESS control to the
counterclockwise position.
extreme
11. Return the DETAIL control to the extreme
counterclockwise position,
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