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SEP.10 1978
ENSEMBLE
MODULATOR
ETH-7(i5iH007)
MODULATOR
BIAS
ADJUSTMENT
Feed
a signal
(1kHz,
sine,
-20dB)
into
EXT.
IN
jack
on
the
rear panel.
Connect
an
oscilloscope to
MONO
jack.
Set
ENSEMBLE
changeover
switch
at
I.
Increase
the input
level
until
the
output
is
slightly distorted.
Adjust
VR-71
so that positive
half
and
negative are symetrlcal.
For
easier
check
on
individual
channel,
connect
the scope
at
the
points:
TP7-301,
-401, -501
and
-601.
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