GF82.85-P-3122CE Component Description For SDAR Tuner/High Definition Tuner Control Unit

GF82.85-P-3122CE Component Description For SDAR Tuner/high Definition Tuner Control Unit

Component Identification:

Location
The SDAR/high definition tuner control unit is located in the trunk on the equipment bridge in front of the spare wheel well.

Task
The SDAR/high definition tuner control unit has the following tasks:
^ Reception of signals
^ Amplifying and decoding signals
^ Transmission of signals

Receive signals
Signals are read in via the following connections:
^ Direct lines
^ Media Oriented System Transport (MOST)

Direct lines
The following signals are read in via direct lines:
- Wake-up
- Satellite signals and terrestrial signals from the multifunction antenna (A28/11)

MOST
The following signals are read in via MOST:
- Control signals from COMAND controller unit (A40/3)

Amplifying and decoding signals
The SDAR/high definition tuner control unit decodes and amplifies the satellite signals (Time Division Multiplex (TDM)) and the terrestrial signals (Coded Orthogonal Frequency Division Multiplex (COFDM)) in pulse code modulation signals.

Transmission of signals
The SDAR/high definition tuner control unit sends the following signals via MOST:
- Demodulated and decoded digital S-band satellite and S-band terrestrial signals as digital traffic data signals
- SDAR/high definition tuner control unit status, program-specific supplemental information (e.g. artist, track name and composer) as well as music categories ("ROCK", "NEWS" and similar)
- Decoded audio signals