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

MODEL 207 with CODE (498) Japan version with CODE (865) TV tuner up to model year 2013/YoM 12 

Illustrated on model 207.3 

Location 

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

Task 

The digital TV tuner has the following tasks:

• Receive signals 
• Demodulating and decoding signals 
• Transmit signals 

Receive signals 

The input factors are read in via the following connections:

• Media Oriented System Transport (MOST) 
• Direct lines 

MOST 

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

Direct lines 

• Electronic wake-up for MOST via a direct line
• TV 1 antenna amplifier (A94/1) via a coaxial cable
• TV 2 and KEYLESS-GO antenna amplifier (A94/2) via a coaxial cable
• TV 3 antenna amplifier (A94/3) (model 207.3) or TV 3 antenna amplifier, FM2 and DAB band III (A2/54) (model 207.4) over a coaxial cable

Demodulating and decoding signals 

The TV signals that are received via the antenna amplifier are evaluated internally and separated into video and audio signals.

Transmit signals 

The signals are transmitted via the following connections:

• MOST 
• Direct line 

MOST 

The TV digital tuner is a subscriber of the MOST, via which it communicates with the COMAND controller unit. The audio signals are transmitted to the COMAND controller unit or the sound system amplifier control unit (N40/3) (with code (810) Sound system).

Direct line 

• Phantom power supply to following antenna amplifiers:
  • TV 1 antenna amplifier
  • TV 2 and KEYLESS-GO antenna amplifier
  • TV 3 antenna amplifier (model 207.3) or TV 3, FM2 and DAB band III antenna amplifier (model 207.4)
• Transmission of video signals (Y-brightness (luminance)/C-color information (chrominance) (Y/C)) via Y/C lines to the COMAND controller unit

Design 

The TV digital tuner is delivered with a "B-CAS card". The card reader in the digital TV tuner is sealed with a cover to prevent unintended removal of the "B-CAS card".

Technical data Designation	Unit	Values	Tolerance range	Remarks
TV digital tuner
Power supply	V	14		Battery voltage UB
Voltage limits	V	9		Minimum UBmin
	V	16		Maximum UBmax
Power consumption	A	< 1.9		Rated power consumption IBmax
	A	< 1.9		Action IAction (Standby=Operation)
	mA	1		Quiescent current I0
Reverse polarity protection				YES
Additional specific parameters TV reception frequencies	MHz	47 to 68		TV band 1
	MHz	174 to 230		TV band 3
	MHz	470 to 862		TV band 4/5
Minimum voltage	V	≥9	±0.2	Minimum UBmin If the voltage drops below the minimum value (UB min), all data in the volatile memories is lost.
Special features				Diagnosis IS tester The IS-tester can access the diagnosis of the digital TV tuner through the front SAM control unit with fuse and relay module (N10/1), interior CAN (CAN B), COMAND controller unit (A40/3) and Media Oriented System Transport (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 value of signals strength 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 control unit

A90/3

PE82.60-P-2220-97EAA