Technical data
Even
though
you
have
made
the
basic
connections,
further
thought
is
required
for
a
successful
interface.
First,
from
reading
the
OPEN
SYSTEM
section
you
know
that
the
KBD
OUTPUT
provides
an
unsealed
version
of
the
Master
Multimoog
keyboard
signal.
It
will
have
to
be
scaled
to
cause
the
Slave
Multimoog
to
follow
the
Master
keyboard
accurately.
Let's
think
in
terms
of
the
sound
charts
below
for
a
tuning/scaling
procedure:
MASTER
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ruomod
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iooo«s
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inns
mm
rau
tow
SLAVE
OO0QO
uin.1T
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tOEUt
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RUIUMD
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StKMC
ROM
r
(for
tuning,
leave
MOD
AMOUNT
fully
toward
you)
First
of
all,
let's
tune
one
Multimoog's
pitch
level
to
the
other,
just
as
we
would
tune
all
the
instruments
of
a
band
together.
We
should
tune
at
the
pitch
represented
by
a
keyboard
signal
voltage
of
"zero."
Why?
When
the
Master
keyboard
signal
is
zero
volts,
the
output
at
its
KBD
OUTPUT
will
be
zero
volts
and
will
not
influence
the
pitch
of
the
Slave
Multimoog.
This
is
rather
like
resorting
to
tuning
the
open
strings
of
two
guitars
when
you're
not
sure
where
the
frets
(scaling)
are
on
each.
To
accomplish
tuning:
1.
Depress
the
lowest
key
on
the
keyboard
of
each
Multimoog
to
set
each
to
"zero
volt"
keyboard
signal.
2.
Place
BYPASS
of
each
Multimoog
ON
to
hear
the
sound
of
each
continuously
for
tuning.
3.
Use
the
FINE
TUNE
control
on
the
rear
panel
of
each
Multimoog
to
match
their
pitch.
Now
Master
and
Slave
are
tuned
to
the
same
pitch
level.
At
this
point
you
might
want
to
place
the
OSCILLATORS
switch
of
the
Slave
to
DRONE
so
its
keyboard
won't
affect
its
pitch.
Otherwise,
any
accidental
touching
of
the
Slave
keyboard
might
transpose
its
pitch.
{Useful
in
some
applications,
like
producing
parallel
intervals
at
the
touch
of
the
Slave
keyboard).
If
you
play
the
Master
keyboard,
you
may
notice
that
the
Slave
will
follow
pitch
generally,
but
increasingly
diverges
as
you
go
up
the
keyboard.
This
is
because
the
Slave
is
being
controlled
by
an
unsealed
version
of
the
Master
keyboard
signal,
available
from
the
Master's
KBD
OUTPUT.
Let's
scale
it:
68