TV tuner (analog/digital), component description - GF82.60-P-3106CA

MODEL 207 with CODE (863) Digital/analog TV tuner 

Illustrated on model 207.3 

Location 

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

Task 

The TV tuner (analog/digital) performs 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 

Media Oriented System Transport (MOST) 

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

Direct lines 

• Electronic wake-up 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, FM2 and DAB Band III antenna amplifier (A2/54) (model 207.4 without code (537) Digital Radio) or TV antenna splitter (A2/89) (model 207.4 with code (537) Digital Radio) via a coaxial line

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 tuner (analog/digital) 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) via a coaxial line
• Transmission of video signals (Y-brightness (luminance)/C-color information (chrominance) (Y/C)) via Y/C lines to the COMAND controller unit

Technical data Designation	Unit	Values	Tolerance range	Remarks
TV tuner (analog/digital)
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	MHz	47 to 68		TV band 1
TV reception frequencies (analog and digital)	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				The IS tester can access the diagnostic system of the TV tuner (analog/digital) over the front SAM control unit with fuse and relay module (N10/1), interior CAN (CAN B), COMAND controller unit (A40/3) and the 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 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
Flash capability/coding capability				Profi-compatible flashable/SCN coding

Wiring diagram for TV tuner

A90/1

PE82.60-P-2220-97EAA