Viessmann 5234 Feedback Decoder
Areas which are not controlled via 5233 should be powered by this small module. This prevents bridging of the track insulation betwenn monitored and unmonitored sections due to vehicles travelling over the insulations from causing interruptions in the occupied message. the additional circuit also guarantees, that the voltage drop of the digital voltage, caused by the current sensors in the 5233, in the monitoring track areas is the same as in the track areas which are not monitored. this avoids a reduction of the speed of a locomotive entering the monitored area.