Doepfer A-198 Handleiding

Doepfer Niet gecategoriseerd A-198

Lees hieronder de 📖 handleiding in het Nederlandse voor Doepfer A-198 (10 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 133 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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doepfer System A - 100 Trautonium / Ribbon Controller A-198
1
1. Introduction
Module resp. A-198 is a so-called Trautonium Rib-
bon Controller. It provides variable Control Voltages
and Gate signals generated by combined position /
pressure sensor. The controlling element of the A-
198 is a linear position sensor (length about 50 cm)
that has available a pressure sensor too.
Touching the sensor with a finger generates a Con-
trol Voltage that is proportional to the position of
the finger. The Scale - i.e. the relation between
position difference and voltage difference - is ad-
justable with a potentiometer at the front panel. A
Hold switch is used to determine if the CV voltage is
held after removing the finger or if the voltage jumps to
0V. In the last case (Hold = off) a Gate signal is
derived from the CV voltage whenever a finger tou-
ches the sensor (e.g. for triggering an Envelope Gene-
rator / ADSR).
A pressure sensor made of conductive rubber arran-
ged below the position sensor generates a second
Control Voltage that increases with higher pressure
of the finger. Even for this CV the Scale is adjustable.
A second Gate signal is triggered as soon as the
pressure exceeds a certain value. The Gate Thres-
hold is adjustable at the front panel.
A-198
Trautonium / Ribbon Ctr.
Scale
CV
Gate
Position
Scale
CV
Gate
Pressure
Control
Board
Off
OnHold
Thres
A-198 Trautonium / Ribbon Controller System A - 100 doepfer
2
2. Overview Controls:
1 Scale : Scale / spread control for Position Con-
trol Voltage output !
2 Hold : Hold function switch
3 LED : Gate signal indicator for Position Gate at
output " (active only if Hold = off)
4 Thres : Threshold control for Pressure Gate si-
gnal at output $
5 LED : Gate signal indicator for Pressure Gate at
output $
6 Scale : Scale / spread control for Pressure Con-
trol Voltage output §
In / Outputs:
! CV : Position Control Voltage output
" Gate : Position Gate output (active only if Hold =
off)
§ CV : Pressure Control Voltage output
$ Gate : Pressure Gate output
% Contr. Board: Connector for manual (USB type)
A Do not connect USB devices to this socket!
"
!
$
§
2
1
4
6
%
3
5
doepfer System A - 100 Trautonium / Ribbon Controller A-198
3
3. Controls
1 Scale
The position sensor of the A-198 is in principle a
linear potentiometer that is activated whenever a
finger touches the sensor. Consequently the relation
between the position of the finger and the Control
Voltage CVPOS is linear too (see fig. 1).
Fig. 1: Connection between position, Control Vol-
tage CVPOS and Scale
The Scale, i.e. the connection between position diffe-
rence and voltage difference, is adjusted with control
1 (see fig. 1).
P If CVPOS is used to control the VCO pitch
the scale is adjusted with control 1 so that
the position difference corresponds to the
desired spread, e.g. 25 cm for one octave.
2 Hold
This switch determines the behaviour of the position
control voltage CVPOS if the finger is removed from
the sensor:
In the Off position of the Hold switch the control
voltage CVPOS drops to 0V as soon as the finger is
removed. If the Gate output " is used to trigger an
Envelope Generator (e.g. A-140, A-141), that controls
the loudness of a VCA or the timbre of a VCF, the
Release time of the Envelope Generator should be
set to zero so that the dropping tone is muted. This is
identical to the behaviour of the Trautonium. Even for
Off : CVPOS drops to 0V and the Gate output "
turns from high to low. This is the same mode
that was available in the Trautonium.
On : The last control voltage before the finger was
removed is held with an internal S&H circuit.
In this mode the Gate function at output " is
not active (Gate is permanently high). This
mode was not available in the Trautonium.
Ribbon Sens or
CV
POS
Pos it ion
Scale

Product specificaties

Merk: Doepfer
Categorie: Niet gecategoriseerd
Model: A-198

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