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(5)
When
using the
EXT
SIG
INPUT
jack,
be
especially careful of
the
setting
of the
sensitivity
selector
(H/M/L).
The
STANDARD
INPUT
LEVELS
shown
in
the
table
on
the
right
indicate
the
levels
at
which
the
overload
indicator
(LED)
will
light
with the
EXT
SIG
control
set at
maximum.
If
the input
level
is
lower than
these
levels,
VCF
activation
by
the
envelope
follower
may
not be
satisfactory.
If
the input
level
is
so high that
it
exceeds
the
maximum
acceptable input
level
shown
in
the
table,
even
when
the
EXT
SIG
control
is
lowered,
the
sound
may
be
distorted.
When
using a micro-
phone,
setting
it
too
close to
the
sound
source
may
cause
distortion.
Be
very
careful
about
the
distance
between
the source
and
the
microphone.
When
using other
electric
or electronic
instru-
ments,
it
is
important
to
match
their
output
level
to
the SH-7,
In
some
cases
it
may
be
desirable to intentionally
cause
distortion effects
by
overloading the
SH-7
inputs.
NOTE:
DO NOT APPLY AN
EXCESS OF
±15
VOLTS TO
ANY
SH-7 INPUT.
The
common
positions for
sources
are:
H
.
.
.
microphones
M
.
.
.
electric/electronic
instrument
L
.
.
.
audio
devices
(line level)
SENSITIVITY
SELECTOR
(IMPEDANCE)
STANDARD
INPUT
LEVEL
MAXIMUM
INPUT
LEVEL
H
(lOKft)
-43dBm
(14mVp-p)
-32dBm
(50mVp-p)
M
(100KS1)
-18dBm
(250mVp-p)
-6dBm
(IVp-p)
L
(lOOKfl)
OdBm
(2Vp-p)
+10dBm
(6.3VP-P)
(1)
Never apply
over
±15
volts
to
any
SH-7
input.
(2!
The
FREQ
and
WIDTH
controls
under
the
rubber
covers
on
the
rear
panel
are
for
use
by
qualified
electronic
technicians.
Do
not touch
these since
even
a
very
slight
change
in
these
can
change
the synthesizer
pitch
relations
and
render the
synthesizer
useless as
a
musical instrument.
(6)
Even
when
SYNC
switch
is
set at
ON,
syn-
chronization
may
fail
if
the
VCO's
are
too
far
out
of
tune and/or
if
two
distant
keys
are de-
pressed simultaneously.
Before
setting
the
SYNC
switch to
ON,
tune
VCO-2
to unison
with
VCO-1
Also be
sure to
set
the
KEY MODE
switch
at
the
ONE
NOTE
position.
With
the
SH-7
synchronization
function, the
synchronization
mode
varies
depending
on
the
phase
relationship
at
the
time
it is
turned
on.
As
shown
in
the table below,
when
two VCO's
are
set at
the
same
range
and
at
the
same waveform,
the
tone
color
and volume
may
change depending
on
the timing of the
SYNC
switch operation.
It is
possible to
change tone
colors
by making
use
of
this
unique
characteristic.
SYNC - ON AT
0°
DIFFERENCE
SYNC - ON AT
90°
DIFFERENCE
SYNC - ON AT
180°
DIFFERENCE
VCO-1
A
8'
SQUARE
WAVE
-
VCO-2
8'
SQUARE
WAVE
COMBINED
VCO-1 /VCO-2
WAVE
-
--
VOL UME
IS
DOUBL
ED.
W
AVE
EFO
RM
IS
TH
CH/>
ERE
iNG
:fo
ED.
RE,
TO
ME
VOL
UME
IS
REDUI
:ed.
20
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