
DOEPFER A-198 RIBBON CONTROLLER
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. Purchasing this system includes both the A-198 module and the Ribbon Controller. (the color of the A-198 manual will be changed to black, so that for R2M and A-198 the same manual will be used) 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 sens