doepfer
System A - 100
Analog / Trigger Sequencer
A-155
5
4
CV knobs (upper row)
You use the CV knobs
4
(upper row) to set the
voltage
output for each step
in the upper analog CV
row. The control voltage set for each step is output at
the upper
Pre Out
§
socket.
The
range of voltage output
can be controlled with
the range switch
6
. Three very accurate voltage ran-
ges are provided (see below) so that the upper analog
CV row is ideally suited for precise
VCO pitch control.
5
CV knobs (lower row)
You use the CV knobs
5
(lower row) to set the
voltage
output for each step
in the lower analog CV row. The
control voltage set for each step is output at the lower
Pre Out
§
socket.
You use the
Scale control
7
to adjust the
range
of
the voltages controlled by the CV knobs.
H
If for any step you patch in an
external CV /
audio input
(socket
$
), the corresponding-
knob in the lower row doesn’t put out its own
voltage.
Instead, it acts as an
attenuator
for the
external CV / audio signal,
before sending it
to the
lower
Pre Out
output
§
.
6
Range
The position of the
Range switch
(a three-way toggle
switch)
6
selects the precise
voltage control range
,
within which the upper row of CV knobs
4
will operate.
There are three ranges to choose from:
•
up
:
1 V
(i.e. one octave)
•
centre
: 2 V
(i.e. two octaves)
•
down
: 4 V
(i.e. four octaves).
The maximum voltage is obtained by turning the knobs
fully clockwise.
7
Scale
Control
7
sets the
range of control voltages
, within
which the lower row of CV knobs
5
will operate. If an
external CV / audio signal is patched into any of the
sockets
$
, the scale control affects the amount of
attenuation
the CV knob will produce on that voltage
.
8
Glide
The internal
slew limiter's
rate is set with control
8
.
If for the current step in a sequence (e.g. step three)
the slew limiter is switched in (by a
"low"
control
signal at the
Glide Ctrl.
§
socket), the control voltage
sent to output
Post Out
§
doesn’t jump instantly from
the voltage at the previous step (in this example, step
two). Instead, it glides gradually to the new voltage, at