Doepfer A-151 Handleiding
Doepfer
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A-151
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doepfer System A - 100 Quad Sequential Switch A-151
1
1. Introduction
Module A-151 (Quad Sequential Switch) is like an
electronic four-position rotary switch.
It includes trigger and reset inputs, four in / out-
puts, and a common out / input.
Each time a pulse is received at the trigger input
socket, the common out / input is connected to the
next in / output. After the fourth in / output, the next
trigger makes it step back to the first again, and so on
(see Fig. 1).
Voltages in the range -8V...+8V at the O/I resp. I/O
sockets can be processed by the module.
Four LEDs indicate the active in / output (ie. the one
that is connected to the out / input at any particular
time).
A positive pulse at the reset input switches the out /
input immediately back to the first in / output (see Fig.
1).
Version 2 of the module (from about 2005) is equip-
ped with an additional switch that is used to set the
number of steps to 2, 3 or 4. On top of that the new
versions allows to switch audio or control signals
within the full A-100 voltage range (i.e. -12V...+12V).
Trig. In
A-151
SEQ. SWITCH
Res. In
O/I
I/O 1
I/O 2
I/O 3
I/O 4
A-151 Quad Sequential Switch System A - 100 doepfer
2
2. Overview Indicators:
1 LED: Indicator for in / output $
2 % LED: Indicator for in / output
3 LED: Indicator for in / output &
4 LED: Indicator for in / output /
5 Steps: Switch for the limitation of the num-
ber of addressed steps to 2, 3 or 4
(available only in version 2)
In / Outputs:
! Trig. In : Input for trigger pulse
" Res. In : Input for reset pulse
§ O/I : Common out / input
$ I/O 1 : In / output 1
% I/O 2 : In / output 2
& I/O 3 : In / output 3
/ I/O 4 : In / output 4
!
"
§
$
%
&
/
5
1
2
3
4
doepfer System A - 100 Quad Sequential Switch A-151
3
3. Indicators
1 LED • • • 2 LED 3 LED 4 LED
LEDs 1 to 4 are the status indicators, showing
which of sockets $ to / is connected to the common
out /input § at any moment.
5 Steps
This switch is used to limit the number of addressed
in/outputs to 2, 3 or 4. The switch is available on in
version 2 of the module (about since 2005).
4. In / Outputs
! Trig. In
Socket ! is the A-151’s trigger input. With each new
pulse (at the rising edge), the common out / input is
switched to the next in / output.
After stepping to the fourth in / output the next trigger
pulse sends the common out / input back to the first in
/ output again (see Fig. 1).
H Don’t forget that with a very fast repeating
trigger, the switching process on the A-151
can produce audio-frequency modulation
(see chapter 5, user examples).
" Res. In
If you want to over-ride the stepping sequence, and
send the common out /input back to the first in / output,
send a reset pulse to the reset input " (see Fig. 1).
The rising edge of this pulse immediately resets the
common out / input to the first in / output.
Using the reset input, you can create repeated se-
quences which switch between three inputs or outputs
($ Ö % Ö &
Ö $ Ö % Ö & Ö $...).
§ O/I
Socket $ is the common out /input. Each time the
A-100 is switched on, or a reset pulse is received, this
socket is connected to the first in / output socket $
(see Fig. 1).
$ I/O 1 • % & / I/O 2 • I/O 3 • I/O 4
Sockets $ to / are the in / outputs.
Product specificaties
| Merk: | Doepfer |
| Categorie: | Niet gecategoriseerd |
| Model: | A-151 |
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