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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
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