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

MODEL 204.0/2 as of model year 2009 with CODE 865 (TV receiver) 

MODEL 204.3/9 with CODE 865 (TV receiver) 

Fig 1: TV-Mode - Block Diagram
G10084750Courtesy of MERCEDES-BENZ USA

Function requirement TV mode, general 

TV mode, general 

With the TV mode it is possible to pick up television channels (e.g. the Japanese National Television System Committee (NTSC) frequency range) in the vehicle and to view them on the Audio/COMAND display. As of 1.6.2009 (with code (498) Japan version) reception is digital via Integrated Services Digital Broadcasting - Terrestrial (ISDB-T). As of 1.6.2012 (model 204.9 except code (498) Japan version), reception is digital via Digital Video Broadcasting Terrestrial (DVBT). The interface is generated by the COMAND controller unit and, like the TV picture, shown on the Audio/COMAND display.

IMPORTANT Except model 204.9 with code (867) SPLITVIEW, the TV picture is switched off for safety reasons starting at v ≥ 5 km/h. When the vehicle is moving, only acoustic playback remains active and a warning message is shown on the Audio/COMAND display.

In model 204.9 with code (867) SPLITVIEW, the TV function in the field of view is fully usable for the front passenger even while driving.

IMPORTANT The TV functions can be selected, activated and set with the following components:

TV mode includes the following function sequences:

Receipt of TV signals 

The antenna signals for TV reception are received by the following antenna amplifiers:

The antenna amplifiers forward the signals to the TV tuner control unit (up to 31.5.2009) or to the digital TV tuner (as of 1.6.2009). In model 204.9 with code (537) Digital radio, the FM 2, DAB and TV 1 antenna amplifier forwards the signals via the TV antenna splitter to the digital TV tuner (as of 1.6.2012). Upon receiving a television channel, the TV tuner control unit (up to 31.5.2009) or the TV digital tuner (as of 1.6.2009) generates audio and video signals.

Output of video signals 

The video signals are transmitted via the following route by the TV tuner control unit (up to 31.5.2009) or by the digital TV tuner (as of 1.6.2009) to the Audio/COMAND display:

Output of the audio signals over the speaker system 

The TV tuner control unit (up to 31.5.2009) transmits the audio signals via a direct line to the COMAND controller unit.

The digital TV tuner (ab 1.6.2009) transmits the audio signals via the Media Oriented System Transport (MOST) to the COMAND controller unit.

On vehicles except code (810) Sound system, the COMAND controller unit emits the audio signals at the speaker system.

On vehicles with code (810) Sound system, the COMAND controller unit sends the audio signals via MOST to the sound system amplifier control unit.

IMPORTANT More detailed information on the speaker system is available in the "Speaker output function" document.

TV mode with remote control and headphones (model 204.9 with code (867) SPLITVIEW) 

Equipment with code (867) SPLITVIEW in model 204.9 enables the driver and the front passenger to use the entertainment and communication systems integrated into the vehicle including the ability to display them on the Audio/COMAND display at the same time and independent of each other. The TV function can be activated and operated using the remote control. The COMAND controller unit receives the signals from the remote control via the integrated infrared interface. In order to enable undisturbed concentration on the traffic situation for the driver, the front passenger receives the audio signals via headphones. The COMAND controller unit sends the audio signals over an integrated Kleer® radio interface to the radio frequency headphones. As an option, external cabled headphones can also be used. The cabled headphones receive the audio signals from the COMAND controller unit via the headphones (cabled) electrical connector.

Additional information (model 204.9 except code (498) Japan version, as of 1.6.2012) 

The supplemental information is subdivided into the following categories:

TV reception 

As the transmission frequencies for analog TV will be used differently in future, only digital TV will be received in the range from 470 to 710 MHz according to the Digital Video Broadcasting Terrestrial (DVB-T) standard. 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 will be supported by the digital TV tuner.

The digital TV tuner currently provides the following features:

IMPORTANT Videotext function

Some stations, primarily in central Europe, offer videotext in addition to their television program. For this purpose, the TV digital tuner is equipped with a separate video text 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, as of 1.6.2009) 

The supplemental information is subdivided into the following categories:

TV reception 

Reception of encoded programs is possible in vehicles up to 31.5.2012 with a smart card and as of 1.6.2012 with a B-CAS SIM card. With digital TV reception the "one-segment" substandard (TV standard for mobile telephony) is also supported in vehicles as of 1.6.2012 in addition to the "full-segment" substandard.

Additional functions 

The digital TV tuner provides the following features:

  Electrical function diagram for TV mode, function Model 204.0/2 up to model year 2012, model 204.9 up to model year 2013 PE82.85-P-2065-97FAA
Model 204.0/2 as of model year 2012, model 204.3, model 204.9 as of model year 2013 PE82.85-P-2065-97FAB
  Overview of system components, telematics   GF82.85-P-9999CE 
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