Yamaha CS-50 Instruction Manual page 51

I
or sound.
The CS-60
memory
is a
miniaturised version
47
of the
programmable
panel, and
is
used in
exactly the
same way.
The
preset patches
(PRESET TONES)
were
all
derived from
actual settings
of
the
programmable
panel.
Once
a
given patch
was
derived, the resistance
value or switch position
ol
each panel control
was
measured.
A
fixed
component
of the
same
value
was
then
built
into the instrument, creating
a
kind of
internal
memory
that
is
recalled
whenever the
corresponding
preset
patch
is
selected.
You
can
always duplicate a preset patch
by using the
pro-
grammable
panel,
as
is
suggested
by
some
of the patch
charts
included
in
this
manual.
You may
wish
to
do do,
and to then vary one or
more
controls to obtain
variations
from
the presets.
Foot Controller Pedal (Both Models)
&
Foot Switch
Pedal
(CS-60 Only)
The
Foot
Controller
is
an expression
pedal that
contains a light
and
a photosensor.
As
the pedal
is
rocked back and
forth,
an aperture varies
the
amount
of
light
reaching the photosensor.
In turn,
the photo-
sensor varies
its
resistance,
and hence
varies
the
DC
voltage
output from the
circuit.
The
voltage
from
the
Foot
Controller
is
applied to the
VCA.
there by
varying
the volume.
The
CS-60 Foot Switch Pedal
is just
that-an
ON-
OFF
switch which
is
housed
in
an assembly designed
for
foot
actuation.
The
switch can be
used to activate
the
portamento/glissando
effect
and/or
the sustain,
depending on
the setting of front-panel
assignment
switches.
When
the
Foot Switch
Pedal
is
not
plugged
into
the synthesizer, the jack automatically closes the
circuit
so the unit
acts as
though
the
Foot Switch
Pedal
were pressed down.
The Foot Switch Pedal has
a
standard
(tip/sleeve)
phone
plug,
whereas
the
Foot
Controller,
because
it
contains
more
circuitry,
requires
a
stereo (tip/ring/
sleeve)
phone
plug.