Digital TV tuner, component description - GF82.60-P-3118FLJ
MODEL 212 with CODE (865) TV tuner with CODE (498) Japan version up to model year 2013 /YoM 12
Shown on model 212.0
Location
The digital TV tuner is located at the right rear in the trunk behind the paneling on a bracket.
Task
- Receive signals
- Demodulating and decoding signals
- Transmit signals
Receive signals
- Direct line
- CAN (with code (864) Rear entertainment system)
- Media Oriented System Transport (MOST)
Direct line
- Power supply over circuit 31 and circuit 30g over one direct line each
- Electronic wake-up for MOST via a direct line
- TV 1 antenna amplifier (A94/1) via a coaxial cable
- TV 2 antenna amplifier (A94/2) via a coaxial cable
- TV 3 antenna amplifier (A94/3) via a coaxial cable
CAN (with code (864) Rear entertainment system)
The digital TV tuner is a telematics CAN (CAN A) subscriber and communicates with the following control units:
- Left rear display (A40/5)
- Right rear display (A40/6)
- DVD player (A40/4)
MOST
The TV digital tuner is a subscriber of the MOST, via which it communicates with the COMAND controller unit (A40/3).
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
Signals are sent through the following lines:
- Direct line
- CAN (with code (864) Rear entertainment system)
- MOST
Direct line
- Phantom power supply to following antenna amplifiers:
- TV 1 antenna amplifier
- TV 2 antenna amplifier
- TV 3 antenna amplifier
- Transmit video signals to the COMAND controller unit via Y/C lines
- Transmit video signals via Y/C lines to the DVD player (with code (864) Rear entertainment system)
- Transmit audio signals via low frequency (LF) lines to the DVD player (with code (864) Rear entertainment system)
CAN (with code (864) Rear entertainment system)
The digital TV tuner is a telematics CAN subscriber and communicates with the following control units:
- Left rear display
- Right rear display
- DVD player
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).
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 | VV | 14 | Battery voltage UB | |
| Voltage limits | VV | 9 | Minimum UBmin | |
| VV | 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 | VV | ≤9 | ±0.2 | Minimum UBmin If the voltage drops below the minimum value (UBmin ), 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 via the front SAM control unit with fuse and relay module (N10/1), the interior CAN (CAN B), the COMAND controller unit (A40/3) and the Media Oriented System Transport (MOST). The following service functions are supported:
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| Flash capability/coding capability | Profi-compatible flashable/SCN coding |
| Wiring diagram for TV tuner | A90/3 | PE82.60-P-2220-97DAA |