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System a - 100, A-191, Switching between the functions – Doepfer A-191 Shepard Generator/16xMIDI-CV Interface (no longer available) User Manual

Page 3: Midi-cv interface

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doepfer

System A - 100

MCV 16

A-191

3

3. Switching between the functions

Because the A-191 has two separate functions in it,
which share some of the controls and outputs, at any
one time it can be used either as a MIDI-CV interface
or as a Shepard Generator. To switch between the two
you simply press a button (see below).

H

The A-191’s controls and in / outputs for
each function are explained in their
respective sections of this manual.

7

Mode button

To switch between functions, press the lowest mode
button
7

7

7

7

.

8

LED

LED 8 lights when the Shepard Generator is active;
otherwise it’s the MIDI-CV interface which is active.

H

If the A-191 receives MIDI clock, LED 8
flashes (see chapter. 4.2, " MIDI In).

4. MIDI-CV interface

4.1 Basics

In its MIDI-CV mode, the A-191 provides a MIDI-CV
converter, and a MIDI-synchronized LFO.

Whenever the A-191 receives relevant MIDI control-
ler messages
on the channel you’ve selected, it con-
verts them into control voltages (in a 0 V to +5 V
range), and sends these out on the corresponding CV
outputs. Table 1 on page 4 lists the MIDI controllers,
their corresponding CV output sockets, and their de-
fault values.

H

After switching your A-100 system on, pres-
sing the Store/Reset button 9 sets the
voltages at the CV outputs to the default
values
(see table 1).

If you’re running your A-100 from a MIDI
sequencer, you’ll need to save the appro-
priate MIDI controller messages at the begin-
ning of a Song, to initialise the A-191’s CV
outputs correctly.