Digital TV tuner, component description - GF82.60-P-3118CE

MODEL 204.9 with CODE (865) TV tuner as of model year 2013/YoM 12 

Location 

The TV digital tuner is located in the trunk on the right side wall behind the paneling on a bracket.

Task 

In addition to the TV reception, the digital TV tuner also supports other functions:

• with code (498) Japan version:
  • Electronic Program Guide (EPG) (program information)
  • Broadcast Markup Language (BML) (video text)
  • Bilingual (sound available in 2 languages (e.g. Japanese and English), depending on station availability)
  • Digital image storage
  • Last settings
• except code (498) Japan version:
  • Video text (pages: 100 to 899)
  • Station list of channels momentarily receivable
  • Last settings
  • National settings
  • Info (information on currently selected station)

For the TV reception, the digital TV tuner performs the following tasks:

• Receive signals 
• Demodulating and decoding signals 
• Transmit signals 

Receive signals 

• Media Oriented System Transport (MOST) 
• Direct lines 

Media Oriented System Transport (MOST) 

The TV digital tuner is a subscriber of MOST and communicates with the COMAND controller unit (A40/3).

Direct lines 

• Power supply via terminal 31 and terminal 30
• Electronic wake-up for MOST
• FM 2, DAB and TV 1 antenna amplifier (A94/1), with code (537) Digital radio via the TV antenna splitter (A2/89)
• TV 2 antenna amplifier (A94/2)
• TV 3 antenna amplifier (A94/3)

Demodulating and decoding signals 

The TV signals are evaluated internally and separated into video and audio signals.

Transmit signals 

• MOST 
• Direct lines 

MOST 

The TV digital tuner is a subscriber of MOST and communicates with the COMAND controller unit.

Direct lines 

• Phantom power supply to following antenna amplifiers:
  • FM 2, DAB and TV 1 antenna amplifier, with code (537) Digital radio via the TV antenna splitter
  • TV 2 and KEYLESS-GO antenna amplifier
  • TV 3 antenna amplifier
• Transmission of video signals via a Y-brightness (luminance)/C-color information (chrominance) (Y/C) line to the COMAND controller unit

Design 

With code (498) Japan version, the digital TV tuner is delivered with a "B-CAS card". The "B-CAS card" is designed as a subscriber identification module (SIM) card and inserted in the SIM card reader. The SIM card reader does not have a cover.

Technical Data Designation	Unit	Values	Tolerance range	Remarks
TV digital tuner
Power supply	VV	14		Battery voltage U B
Voltage limits	VV VV	9 16		Minimum UBmin Maximum UBmax
Power consumption	A	< 1.9 < 1.9		Rated power consumption IBmax Action IAction (Standby=Operation)
	mA	1		Quiescent current I0
Reverse polarity protection				Yes
Additional specific parameters
Reception frequencies	MHz	90 - 108		VHF-Low (ISDB-T)
	MHz	170 - 222		VHF-High (ISDB-T)
	MHz	470 - 710		UHF (digital TV)
Minimum voltage	VV	9	±0.2	Minimum UBmin If the voltage drops below the minimum value (U Bmin), all data in the volatile memories is lost.
Special features				Diagnosis IS tester The IS tester can access diagnosis for the TV digital tuner via the front SAM control unit with fuse and relay module (N10/1), interior CAN (CAN B), COMAND control unit and MOST. The following service functions are supported: Control unit identification Fault management Read fault list Read freeze frame data of a fault Delete fault codes Wiring test of TV antenna amplifier and audio/video lines for short circuit and connection Read current signal strength (TV antenna amplifier switched on or off) Read mean signal strength value (TV antenna amplifier switched on or off) Antenna use (TV performs long-term observation) Test picture and test audio Programming TV parameters, i.e. National settings and audio and video lines used Read TV parameters Control module reset Write and read permanent channel list for special usage areas (workshop list)
Flash capability/coding capability				Profi-compatible flashable/SCN coding

Wiring diagram for TV tuner

A90/3

PE82.60-P-2220-97FAA