The cassette drive is a standard part such as in radio sets with integrated cassette drive.
The on-board monitor control panel (BMBT) transfers pressed radio buttons as well as the status of the cassette drive in the form of I-bus signals to the radio. The radio set then decides whether driver functions are to be controlled and sends corresponding data telegrams back to the on-board monitor control panel (BMBT). In turn, the on-board monitor control panel (BMBT) triggers the required action on the cassette drive. Any change in the status of the cassette drive is sent to the radio.
Exception: The cassette is ejected immediately when EJECT button is pressed. The EJECT data telegram is additionally sent to the radio.
The sound signals from the cassette drive are amplified as standard and transferred at audio frequency outputs to the radio for further amplification. Short-circuits do not destroy the audio frequency outputs.