Module A-198 is a Trautonium Manual resp. Ribbon Controller. 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 control voltage CV1 that is proportional to the position of the finger. The scale (i.e. the relation between position difference and voltage difference) is adjustable with a potentiometer at the front panel. A hold switch is used to determine if the CV voltage is held after removing the finger (hold = on) or if the CV voltage jumps to 0V (hold = off). In the last case (hold = off) a gate signal is derived from the CV voltage whenever a finger touches the sensor (e.g. for triggering an envelope generator).
A sensitive pressure sensor located below the position sensor generates a second control voltage CV2 that increases with higher pressure of the finger. Even for CV2 the scale is adjustable. A second gate signal is triggered as soon as the pressure exceeds a certain value. The gate threshold is adjustable at the front panel.
The sensors are located in a separate metal frame (length about 600 mm, width about 30 mm, height about 18 mm, weight: about 900 g, color: silver-grey). The connection between the module and the sensor frame is made by a 4 pin cable (same as used for USB connections).
- Ribbon controller for Eurorack synthesizers
- Adjustable scaling for precision tuning
- Options for Hold or Reset when finger is removed from ribbon
- Gate output for whenever a finger touches the ribbon
- Pressure sensitive control
- Threshold control exports a gate whenever the pressure amount exceeds the threshold
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- Eurorack Module
- Width: 8HP
- Depth: 40mm
- Current Draw: 40mA @ +/-12V