Digital TV Tuner, Component Description - GF82.60-P-3118GRJ
MODEL 166.0
with CODE (865) TV tuner
up to model year 2013/AEJ 12
Location
The digital TV tuner is arranged beneath the left front seat.
Task
- Receive signals
- Demodulating and decoding signals
- Transmit signals
Receive signals
- Direct lines
- Telematics CAN (CAN A) (with code (864) Rear entertainment system)
- Media Oriented System Transport (MOST)
Direct lines
- Power supply over circuit 31 and circuit 30g over one direct line each
- Electronic wake-up for MOST via a direct line
- FM 2, DAB and TV 1 (A2/19) antenna amplifier via a coaxial cable
- TV 2 antenna amplifier (A94/2) via a coaxial cable
- TV 3 antenna amplifier (A94/3) via a coaxial cable
Telematics CAN (CAN A) (with code (864) Rear entertainment system)
The TV digital tuner is a telematics CAN subscriber and it 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
- Telematics (with code (864) Rear entertainment system)
- Media Oriented System Transport (MOST)
Direct line
- Phantom power supply to following antenna amplifiers:
- FM 2, DAB and TV 1 antenna amplifier
- TV 2 antenna amplifier
- TV 3 antenna amplifier
- Video signals over Y/C lines to COMAND controller unit
- Video signals over Y/C lines to the DVD player (with code (864) Rear entertainment system)
- Audio signals over low frequency (LF) lines to the DVD player (with code (864) Rear entertainment system)
Telematics (with code (864) Rear entertainment system)
The TV digital tuner is a telematics CAN subscriber and it communicates with the following control units:
- Left rear display
- Right rear display
- DVD player
Media Oriented System Transport (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 or code (811) Advanced 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 |
|---|---|---|---|---|
| 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 I Bmax | |
| A | < 1.9 | Action IAction (Standby=Operation) | ||
| mA | 1 | Quiescent current I0 | ||
| Reverse polarity protection | YES | |||
| Additional specific parameters TV reception frequencies |
MHz | 90 - 108 | TV band 1 | |
| MHz | 170 - 222 | TV band 3 | ||
| MHz | 470 to 770 | TV band 4/5 | ||
| Minimum voltage | V | ≤ 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 diagnostic system of the TV digital tuner via the electronic ignition lock control unit (N73), 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-2220-97NAA |