5-7.
PROGRAM
PLAYBACK
ADJUSTMENTS
5-8.
OUTPUT
LEVEL
While
reproducing the operating level tone
from
the
test
cartridge,
adjust
the
ROUT
and
LOUT
controls
on
the Playback/Logic board
for
the
desired output as measured
on
an
external
VU
meter connected to the output.
5-9.
PLAYBACK
EQUALIZATION
While
reproducing the frequency response
series
of tones
from
the
test
cartridge,
adjust
the
PLAY
EQ
controls
located
on
the Playback/
Logic
board. Adjust the
LF
Rand
LF
L
controls
so
that
no
tone
between
50
Hz
and
1,000
Hz
rises
more
than 1
dB
above
the frequency response
ref-
erence tone. Adjust the
HF
R
and
HF
L
so
that
the tones
between
10
kHz
and
18
kHz
are
within +1,
-2
dB
of the reference tone.
5-10.
VU
METER
CALIBRATION
(REPRODUCE
UNITS
ONLY)
Once
the output level
is
set
as described in Step 1,
adjust
the
METER
CAL
R
PLAY
and
L
PLAY
for
a
front
panel
VU
meter indication of 0
VU
while reproducing the operating level tone.
5-11.
CUE
SENSITIVITY
ADJUSTMENT
The
cue
tones sensors are adjusted to operate
on
a tone
at
a
level
below
the
NAB
standard
cue
tone
levels.
This allows
for
variations
in tone level caused
by
tape wear,
etc.
At
the
factory,
Series
3000
units
are adjusted to sense tones 6
dB
below
the
NAB
standard
levels.
When
a cue tone
test
cartridge
is
available
with tones recorded
at
a level
below
the
NAB
standard
cue
tone
level,
the sensors
may
be
ad-
justed
while reproducing the
cue
tone
test
cartridge.
During the 1,000
Hz
stop tone,
adjust
the
CUE
SENS
1
kHz
control
so
that
the sensor
just
triggers
and
stops the
unit.
During
the
150
Hz
tone,
adjust
the
CUE
SENS
150
Hz
control
so
that
the sensor
just
triggers
to
light
the
Q1
150Hz tone.
During
the 8,000
Hz
tone,
adjust
the
CUE
SENS
8kHz control
so
that
the sensor
just
triggers
to
light
the
Q11
8kHz
indicator
lamp.
I
tton
I
WHEN
ADJUSTING
THE
1
KHZ
CONTROL
WAIT
3
SECONDS
AFTER
THE
CARTRIDGE
STARTS.
THIS
SENSOR
IS
DISABLED
FOR
THIS
TIME.
If
a
cue
tone
test
cartridge
is
not
regularly
available,
tones
from
an
audio signal generator
may
be
used to
adjust
the sensors.
However,
a
cue
tone
test
cartridge
or
cue
tone recording of
known
quality
must
be
available
initially
to determine the signal
levels
required. Proceed as
follows:
25
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