ELECTRONIC MUSIC LABORATORIES EML 101 Service Manual

PANEL JACKS
EML 101
(Listed from left
to
right)
(Arrows down
- inputs; arrows
up
-
outputs)
KEYBOARD
+
VOLTS (output)
Glide (input)
Gate (output)
CM
2
(output)
Sequencer
(input)
Constant voltage source; stereo output, +10
V,
-10
V,
nominal.
Used with optional
lOI foot switch for turning glide on and
off.
—
A voltage source of
approximately
15
volts which
is
"turned
on" for
every key depression.
When
a
key
is
depressed,
the
GATE VOLTAGE immediately goes
to
+15
V
and will remain at
that
level
for
as
long
as
the key
is "down".
The GATE may
be used to initiate envelopes of the
101, "step"
a
Sampler, initiate external add-on control functions
(Envelope, Sampler, Sequencer)
of
the EML 200, EML 401 module,
and
EML
400 Series Sequencer.
Keyboard
1
control voltage
Lowest key
- 4.4 volts (+10%)
ifnM
.
..
/
;
r
.
Highest
key
- 8.8 volts
T+lOjg)
~
O.S<^ ^
EML 400 Series Sequencer quantized, exponential, or
linear
voltage input for pitch control of Oscillators
3
and
4.
Oscillator
3
must
be
in the KB2 mode. Oscillator
4 in CM3 mode.
OSCILLATOR CONTROL MIXER
External
(input)
Output
Used
to introduce external control voltage sources
into the
oscillator
control mixer.
Patching an external control source
into
pT,
negates
the presence of Oscillator
4
in this mixer.
Oscillator
4
being replaced by the new control source.
Turning
the lower
pot
counterclockwise determines
"how
much" of
the
new control
source
signal will be
in
the mixer.
The
fnix
of control voltages
is
outputted
at this jack.
If the
pots
in the
MIXER block are both set
to zero
nothing
will be
outputted,
(i e. If the uppermost
"pot"
is set
to
9
o'clock
and the lower "pot" set
to
2
o'clock, the proportional mix of
the control
voltages from Oscillator
1
and
Sampler
will be
present at the output.)