Signal Processing Module: Description and Operation

GF82.62-P-5000RD Component Description For Digital Audio Broadcasting Control Unit
MODEL 172.4
- with CODE (537) Digital radio





N87/3 Digital Audio Broadcasting control unit

Location
The Digital Audio Broadcasting control unit is located in the trunk on the rear wall.

Task
^ Receive signals
^ Decoding of signals
^ Transmit signals

Receive signals
^ Direct lines
^ Media Oriented System Transport (MOST)

Direct lines
- Circuit 30g
- Circuit 31
- Wake-up
- Digital radio (DAB) band-III signals via a coaxial cable from the windshield antenna structure via the antenna amplifier FM 2, DAB and TV 3 (A2/19)

Media Oriented System Transport (MOST)
- FM signals from audio equipment (for optimum reception-dependent switchover of DAB to FM)

Decoding of signals
The Digital Audio Broadcasting control unit decodes the DAB band-III signals into pulse-code modulation (PCM) signals.

Transmit signals

MOST
- DAB status
- Station lists
- Audio signals