GF82.60-P-3106CA | TV tuner (analog/digital), component description | 5.3.12 |
MODEL 207 with CODE (863) Digital/analog TV tuner
P82.90-2412-06
Illustrated on model 207.3
A90/1 TV tuner (analog/digital)
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).
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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.
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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 (UBmin), 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 - Write and read permanent channel list for special usage areas (workshop list) | ||||
Flash capability/coding capability | Profi-compatible flashable / SCN coding |