All electronics necessary to drive the sensors and actuators
are built into a rack. It contains the amplifier of the torque
signal converting the laser spot displacement to k5V. Additionally,
the coil currents of a micromotor are measured
mapping *lOOOmA to k5V. Furthermore, the rack comprises
the power stage for the master-motor mapping k5V
to *4A as current set-point, and the power stage for the micromotor
with three channels of Al2V output voltage
mapped to a k5V set-point.