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TV-Mode, Function - GF82.85-P-2011GN

Model 166 as of model year 2016 with code 865 (digital TV) 

Model 292 with code 865 (digital TV) 

G14136921Courtesy of MERCEDES-BENZ USA

Shown on model 292 

G14136922Courtesy of MERCEDES-BENZ USA

Illustration shows model 166 

Function requirement TV mode, general 

TV mode, general 

With CODE 865 (TV tuner), the tuner unit makes it possible to receive digital TV channels. The tuner unit separates the video and the audio signals from each other and forwards them separately. The TV mode is therefore comprised as follows:

The COMAND controller unit switches the TV picture off when the vehicle starts to move. When the vehicle is moving, only acoustic playback remains active and - for safety reasons - a warning is shown on the Audio/COMAND display. The COMAND controller unit receives the speed signal via interior CAN from the instrument cluster.

IMPORTANT Model 166

as of model year 2016

with code 864 (Rear compartment entertainment package) with code 865 (digital TV)

Model 292

with code 864 (Rear compartment entertainment package) with code 865 (digital TV)

The TV reception can also be used in the rear. Using the TV reception in the rear is described elsewhere.

Operation function sequence 

The COMAND controller unit generates the menu displays and transmits them to the Audio/COMAND display via an LVDS line. The control signals from the Audio/COMAND control panel and from the touchpad are forwarded via the following route:

Telematics CAN →

COMAND controller unit →

MOST →

Tuner unit

The control signals from the left multifunction steering wheel button group and from the right multifunction steering wheel button group are forwarded via the following route:

Steering wheel electronics →

Steering LIN →

Steering column tube module control unit →

Chassis CAN 1 →

Electronic ignition lock control unit →

Chassis CAN 2 →

Instrument cluster →

Interior CAN →

COMAND controller unit →

MOST →

Tuner unit →

Function sequence for TV signal reception 

In model 292, the TV-1 signal and the TV-2 signal are forwarded via the following route:

Rear window antenna →

TV 1 antenna amplifier or TV 2 antenna amplifier →

Tuner unit

IMPORTANT The tuner unit receives the TV-2 signal at the TV 1 input and the TV-1 signal at the TV 2 input.

In model 292, the TV-3 signal is forwarded via the following route: Windshield antenna →

TV 3 antenna amplifier →

In model 166, the TV-2 signal is forwarded via the following route: Rear window antenna →

FM 2, DAB and TV antenna amplifier →

TV and DAB antenna splitter (with code 537 (Digital radio (DAB))) → Tuner unit

In model 166, the TV-1 signal and the TV-3 signal are forwarded via the following route:

Windshield antenna →

TV 1 antenna amplifier or TV 3 antenna amplifier →

Tuner unit

Function sequence for video signal 

After the TV signals have been processed in the tuner unit, the video signals are output via the following route:

LVDS line →

COMAND controller unit →

LVDS line →

Audio/COMAND display

Function sequence for audio signal 

After the TV signals have been processed in the tuner unit, the audio signals are transmitted via MOST to the COMAND controller unit (except CODE 810 (Sound system) and except CODE 811 (Advanced sound system)) or via the COMAND controller unit to the sound system amplifier control unit (with CODE 810 (Sound system) or CODE 811 (Advanced sound system)), amplified and output via the speaker system.

Additional information (except CODE 498 (Japan version)) 

The supplemental information is subdivided into the following categories:

The tuner unit receives digital television in accordance with the standard "Digital Video Broadcasting-Terrestrial" (DVB-T) in the range of 470 to 710 MHz. In addition to the video compression standard Mpeg 2, Mpeg 4 is also supported. Receiving encoded programs is also possible via an integrated conditional access module.

Additional functions 

New services will be offered in the frequency ranges from 90 to 108 MHz and 170 to 222 MHz in future that can be supported by the tuner unit.

The tuner unit currently has the following functions:

IMPORTANT Videotext function: Some stations, primarily in central Europe, offer videotext in addition to their television program. For this purpose, the tuner unit is equipped with a separate videotext decoder. Only videotext broadcast with Latin ASCII characters are supported, i.e. Greek or Cyrillic characters are not supported.

Additional information (with CODE 498 (Japan version))

The supplemental information is subdivided into the following categories:

The reception of encoded programs is possible with a B-CAS SIM card (Subscriber Identification Module). With digital TV reception, the "one-segment" substandard (TV standard for mobile telephony) is also supported in addition to the "full-segment" substandard.

IMPORTANT The tuner unit is supplied with a "B-CAS card" inserted into the integrated SIM card reader. The SIM card reader is covered with a seal.

Additional functions 

The tuner unit has the following functions:

  Electrical function diagram for TV mode, function   PE82.85-P-2065-97NBA
PE82.85-P-2065-97NBB
  Overview of system components, telematics   GF82.85-P-9999GN