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Home >> Mercedes Benz >> 2011 >> E 350 BLUETEC (212.024) V6-3.0L DSL Turbo (642.850) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Entertainment Systems >> Antenna, TV >> Description and Operation

Antenna, TV: Description and Operation



GF82.90-P-1003FL Rear Entertainment, TV Reception, Function
- with CODE (864) Rear entertainment system
- with CODE (863) Digital/analog TV tuner
- with CODE (498) Japan version



Function requirements
^ Circuit 30g and active telematics CAN (CAN A) (a vehicle door is opened) for t = 10 min

The "TV" menu item is only active when the display is switched on. It is necessary to select the respective display using the "Roller" control on the remote control when the "TV" menu item with menus and submenus is operated via the remote control

General
The TV image or the interface is shown by the left rear display (A40/5) or right rear display (A40/6) after selecting the "TV" menu item in the application bar.
The "Rear entertainment TV reception" function consists of the following subfunctions:
^ Function sequence for selection of the TV channel or video text
^ Settings in "TV" menu item via remote control function sequence
^ Transmission of audio and picture signals function sequence

Operating instructions:
If the "TV" menu item is called up via the "4-zone control with OK" control on the remote control, the TV screen appears on the respective display in full-screen mode. A control menu displaying the channel currently selected appears in the status bar of the respective display. The skip left and right symbols appear in the function bar of the respective display with the previous and next channel shown next to the respective symbol.
Full picture mode is terminated by pressing the "4-zone control with OK" control on the remote control. The "TV" menu item is displayed on the respective display with the associated menus broken down as follows:
- Application bar:
- "Disk", "TV", "AUX" and "System"

- Scaled down TV image and "Full screen" menu
- Function bar:
- "TV" menu, "Memory", "Info" (only with digital TV channels), "Text", "Treble" and "Bass"

The associated submenus can be called up on the respective display via the following menus:
- "TV" menu:
- Channel list (receivable channels)
- Channel input (precise channel input)
- Brightness (setting from -5 to +5)
- Contrast (setting from -5 to +5)
- Color (setting from -5 to +5) - Automatic
- 16:9 optimized
- 4:3
- Wide screen
- Channel fix (manually setting a station)
- TV standard (= country switchover for channel selection)
- Audio 1
- Audio 2

- "Memory" menu:
- Audio memory (up to 20 channels per display)
- Preset station buttons 1 to 20 (per display)

- "Info" menu (supplemental information about channel, only with digital TV channels)
- "Text" menu (for calling up the video text)
- "Treble" menu (for adjusting the treble from -10 to +10)
- "Bass" menu (for adjusting the bass from -10 to +10)

The "TV" menu item with menus and submenus is selected and operated on the respective display via the following controls on the remote control:
- "Roller":
- Select respective display

- "4-zone controller with OK":
- Navigate the interface of the screen on the respective display in 4 directions and select menus or submenus with "OK".

- "Back":
- Move back through menu levels

- "Mute":
- Muting of selected TV channel for headphones connected by cable

- "VOL +" and "VOL -":
- Regulation of volume of the selected TV channel for headphones connected by cable

- "Skip forward" or Skip back":
- Skip forward or back when selecting TV channel

- "Video text":
- Operation of the various video text functions

- "12-key keypad":
- Alphanumeric input of TV channel

Irrespective of the settings on the COMAND controller unit (A40/3) (with code (527) COMAND APS with single DVD drive (with navigation) or with code (512) COMAND APS with DVD changer), the analog and digital TV channels that can currently be received can be selected.

Function sequence for selection of the TV channel or video text
The TV tuner (analog/digital) (A90/1) (with code (863) Digital/ analog TV tuner) or the TV digital tuner (A90/3) (with code (498) Japan version) receives the TV signals from the following antenna amplifiers via the respective direct lines:
- TV 1 antenna amplifier (A94/1)
- TV 2 antenna amplifier (A94/2)
- TV 3 antenna amplifier (A94/3)

The respective TV tuner evaluates the TV signals and transmits the analog audio signals via a stereo line and the analog picture signals via a Y-brightness (luminance)/C-color information (chrominance) (Y/C) line to the DVD player (A40/4).

The DVD player forwards the analog audio signals via a stereo line and the analog picture signals via a Y/C line to the respective display. The interface is shown on the respective display.
The TV channel or the video text can now be selected via the specified controls on the remote control (see operating instructions). The signals from the specified controls on the remote control are transferred via the infrared (IR) interface to the remote control and to the respective display.
The display forwards the IR signals to the respective TV tuner via the telematics CAN.

The TV tuner evaluates these signals and transmits the analog audio signals via a stereo line and analog picture signals via a Y/C line of the received and selected TV channel back to the DVD player. The DVD player forwards the analog audio signals via a stereo line and the analog picture signals via a Y/C line to the respective display. The interface is shown on the respective display.

Settings in "TV" menu item via remote control function sequence
The respective display uses the analog picture signals from the DVD player and the digital signals to generate the interface of the "TV" menu item on the respective display. The respective display shows the menus and their submenus in the "TV" menu item for the rear passenger (see operating instructions).
The rear passenger can perform the corresponding operations and settings using the specified controls on the remote control (see operating instructions).
The signals from the controls on the remote control are transferred via the IR interfaces at the remote control and at the respective display.

Transmission of audio and picture signals function sequence
The respective TV tuner sends analog picture signals of the received and selected TV channel via a Y/C line to the DVD player and from there via a Y/C line to the respective display. The display uses them to generate digital picture signals for picture display. After receiving the analog audio signals of the received and selected TV channel at the TV tuner, this sends the audio signals via stereo lines to the DVD player and from there to the respective display. In the display, digital audio signals are generated from the analog audio signals.
Up to 31.5.2010, the digital audio signals are transmitted via the IR interface of the respective display to the IR interface of the corresponding headphones (cordless).
As of 1.6.2010, the digital audio signals are transmitted via the two-way radio interface of the respective display to the two-way radio interface of the corresponding headphones (cordless).
Volume can only be adjusted using the volume control integrated in the headphones.

A headphones socket is integrated into each display, to which headphones can be directly connected (cable).
The volume is adjusted using the "VOL +" and "VOL -" controls on the remote control. Additionally, the preset volume can be changed via the volume control of the particular headphones. The signals from the "VOL +" and "VOL -" controls on the remote control are transferred through IR interfaces on the remote control and the respective display.





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