- Description: Another view. This decoder placement is only possible because the Tran DCX75 is only 1,5mm thick. Another word about the Tran decoders: In spite of the decoders qualities, the manuals are not good. Not the german original nor the swedish or english translaitons. To make the decoder get along with the Roco motor, I needed to put the value of 19 into CV9. This changes the motor PVM frequency from 16KHz to ~100Hz. Without this modification, the loco would not run more than half its top speed.
