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Sony PCM-601ESD Operating Instructions Manual page 11

Digital audio processor
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AUTOMATIC PLAYBACK MUTING FUNCTION
Press the AUTO PB MUTE
button
during playback to
activate the
muting
circuit, which
automatically
eliminates
faulty sound reproduction caused when tape
playback begins or when the unit
is set
to the fast
forward or pause modes, or when frequent dropouts
occur.
If
the muting circuit
activates so
often as to make
listening
unpleasant,
adjust
the VTR tracking
control
and then press the AUTO PB
MUTE
button to release it.
This
will
permit you
to
continue
listening
without
interruption, although a certain amount
of noise will be
reproduced.
Notes
Be sure
to press the AUTO PB MUTE button when
recording
and
playing back TV
programs.
Otherwise
the video data could be misread as
PCM data a1=1d
clicking
noise might
occur,
which
could damage the
speakers.
Clicking
may
also
occur
when
a
blank video
tape
is
played back.
The PB MUTING indicator
lights
up
when
dropouts
occur, regard less
of the AUTO
PB
MUTE
button
setting.
OVC CONTROL ADJUSTMENT
When playing back the tape recorded
with
the
mm
or
VHS
long
play mode,
on which
the
recorded
track is too
narrow to
correctly
pick up the
digital
signals,
set the
OVC
control as follows :
1
Press
the ANALOGUE button.
2
Press
the
PCM-601ESD
TRACKING
button and adjust
the VTR
tracking
function (see "Tracking
adjustment
of
the
VTR").
3
Turn the OVC
control
as
follows :
OVC
indicators
Red
Green
r---,
••
Blink intermittently.
4
If
you cannot make the
adjustment
this
way, reset
the OVC control to the
center
position
and adjust
the VTR's picture or
sharpness
control
so that the
OVC
indicators
light
up
in
the manner described in
step
3.
Once
the
optimum
video
condition
is
obtained,
it
is
not
necessary to readjust the
OVC control even
if red OVC
indicator
sometimes
flashes or lights up.
The built-in
error
correction
circuit functions
at
that time.
If the
red
OVC
indicator
frequently
flashes,
clean
the
head or replace the video
tape.
Note
:
The OVC indicator shows the
logically
counted
PCM data
condition.
Therefore, the VTR
condition is
checked
only
with
the PCM data and
it
does not
correspond
to the video image
condition. In
general,
PCM
data
error
occurrence tends to decrease when no
image or dropout
compensation
is applied.
11

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