TV-Mode, Function - GF82.85-P-2011GW
Model 463
as of model year 2013 up to model year 2017
with code EM8 (TV tuner)
Show on model 463
Function requirement TV mode, general
- Circuit 30g ON
- Transport mode not active
TV mode, general
The digital TV tuner makes it possible to receive digital TV channels in the vehicle and show them on the Audio/COMAND display.
The TV functions can be selected, activated and adjusted using the following components: Audio/COMAND control panel, left multifunction steering wheel button group and right multifunction steering wheel button group.
The Audio/COMAND control panel sends the control signals via the following route:
Telematics CAN →
COMAND controller unit →
Media Oriented System Transport →
TV digital tuner
The control signals from the left multifunction steering wheel button group and the right multifunction steering wheel button group are sent by the steering wheel electronics as follows:
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 →
TV digital tuner
The digital TV tuner separates the video and audio signals from each other. The TV mode is therefore comprised as follows:
- Function sequence for TV signal reception
- Function sequence for video signal
- Function sequence for audio signal
- Additional information (with code EM8 (TV tuner))
- Additional information (with code ZJ1 (Version for Japan))
The TV picture is switched 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.
Function sequence for TV signal reception
The TV 1 and TV 2 television broadcasting signals are received via the following route:
Left side window antenna →
TV 1 antenna amplifier and TV 2 antenna amplifier →
TV digital tuner
The TV 3 television broadcasting signal is received via the following route:
Right side window antenna →
TV 3 and DAB antenna amplifier →
TV antenna splitter (with code EF6 (Digital radio (DAB))) →
TV digital tuner
Function sequence for video signal
After the TV signals have been processed in the digital TV tuner, the video signals are output as follows:
Digital TV tuner →
Y/C line (Y - brightness (luminance)/C - color information (chrominance)) →
COMAND controller unit →
LVDS line →
Audio/COMAND display
The control signals, e. g., switch-on request, are received by the Audio/COMAND display over the telematics CAN from the COMAND controller unit.
Function sequence for audio signal
After the TV signals have been processed in the digital TV tuner, the audio signals are sent via MOST to the COMAND controller unit and on vehicles with code EU9 (Harman Kardon® Logic 7® surround sound system) via MOST to the sound system amplifier control unit where they are amplified and output over the speaker system.
Additional information (with code EM8 (TV tuner))
The supplemental information is subdivided into the following categories:
- TV reception
- Additional functions
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 786 MHz according to the Digital Video Broadcasting Terrestrial (DVB-T) standard. In addition to the video compression standard Mpeg 2, Mpeg 4 is supported. Reception of 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 the future that can be supported by the digital TV tuner.
The digital TV tuner currently provides the following features:
- Video text (Pages: 100 to 899)
- Station list of channels currently receivable
- Last settings
- National settings
- Info (information on currently selected stations)
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 ZJ1 (Version for Japan))
The supplemental information is subdivided into the following categories:
- TV reception
- Additional functions
TV reception
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.
Additional functions
The digital TV tuner provides the following features:
- Digital image storage
- Last settings
- "BML" (Broadcast Markup Language) function: The digital TV tuner supports video text for all available Japanese TV stations. This enables information to be shown similar to a small website on weather, news, etc. By selecting a region in the setting list you can obtain region-specific information
- "EPG" (Electronic Program Guide) function): The Electronic Program Guide shows information such as start times and the duration of programs and detailed information about the TV programs for each TV station
- Bilingual function: Two languages are supported depending on station availability, e. g., Japanese on the main-sound track and English on the sub-sound track
| Electrical function diagram for TV mode, function | PE82.85-P-2065-97ZGA | ||
| Overview of system components, telematics | GF82.85-P-9999GW |