Component description for SDAR tuner/high definition tuner control unit

P54.21-3006-06

Illustrated on model 207.3

N87/8 SDAR control unit / high definition tuner

Location

The SDAR/high definition tuner control unit is located in the center of the trunk below the trunk mat on the equipment carrier.

Task

The SDAR / High definition tuner control unit has the following tasks:

 Receive signals

 Amplifying and decoding signals

 Transmit signals

Receive signals

Signals are read in via the following connections:

 Direct line

 Media Oriented System Transport (MOST)

Direct lines

- Wake-up

- Multifunction antenna (A28/11) (for satellite signals and terrestrial signals)

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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 (PCM) signals.

Transmitting signals

Signals are sent through the following lines:

 Direct line

 MOST

Direct line

- Multifunction antenna (power supply to antenna, phantom supply via antenna input)

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MOST

- Audio signals to sound system amplifier control unit (N40/3) (with code (810) Sound system)

- Status of SDAR / high definition tuner control unit, program-specific supplemental information (e.g. artist, track name and composer) as well as music genre
(e.b. "ROCK", "NEWS") to the COMAND controller unit

- Demodulated and decoded digital S-band satellite as well as S-band terrestrial signals as digital traffic data signals to the navigation unit integrated into the COMAND controller unit