GF82.60-P-0002Q Audio 10 Function
GF82.60-P-0002Q Audio 10 Function
The following versions are possible:
^ Radio (A2) (radio, cassette drive)
^ Radio (A2) (radio, CD drive) with code (756b) MB Audio 10 CD radio with VK/RDS
The radio (A2) can generally be combined with a CD player with changer (6-disc) (in glove compartment) (A2/6).
The radio (A2) is the main operating unit for the entertainment and communication systems within the Digital Data Bus (D2B) ring that is integrated in the vehicle. It has a display, function keys, a rotary switch and a cross-shaped rocker button for information input and output.
There are four possible connecting facilities:
^ Sound system
^ CD changer
^ Telephone
^ Emergency call
^ Voice control
Several functions can also be activated with the aid of the multifunction steering wheel (MFL) buttons.
It should be noted that all button operations on the MFL are first processed by the instrument cluster (A1).
The instrument cluster (A1) links the incoming button actuations with the current menu setting at the multifunction display (A1p13 and transmits an appropriate Controller Area Network (data bus/ CAN bus) (CAN) message via the Controller Area Network Bus Class B (interior) (CAN-B) to the radio (A2) if necessary. The following related information is displayed in the instrument cluster (A1):
^ Phone numbers.
^ Transmit frequency
^ CD or cassette operation
^ Station name
D2B bus system
The digital components of the radio (A2) are networked via the D2B fiber optical cable bus system. The bus system is used to transmit data (control commands and useful information) between the various system components.
Because some of the individual components work with different data formats or require different data transfer rates and security levels, different bus systems have been installed:
^ Digital databus (D2B)
^ Controller Area Network bus Class B (interior) (CAN-B)
^ Controller Area Network bus Class C (engine compartment) (CAN-C)
The conditions must be met for startup:
^ Circuit 15R ON
^ D2B ring active
D2B components such as the telephone can also be activated on the D2B ring.
System activation
The operating unit switches on when the rotary knob is pressed. The volume is regulated at the rotary switch for the audio source adjusted in each case.
The function keys switch over to the audio source desired by the user. The radio (A2) is operated using:
^ Fixed programmed function keys
^ Alphanumeric key block
^ Eject key
^ Programmable function keys
^ rotary knob with integrated handsfree button
^ cross-shaped rocker switch with pushbutton
^ ON button
^ Mute button
^ Display
^ Control buttons on the MFL
The vehicle can be equipped optionally with an infrared remote control for issuing commands from the rear passenger compartment for telephone and audio functions, providing another increase to the level of operating convenience.
Speed-dependent volume control
A higher vehicle speed leads to an increase in driving noise (e.g. wind noise) whereas a lower vehicle speed leads to a decrease in driving noise. In order to achieve the best possible sound quality without having to fiddle with the radio, the volume of the radio (A2) is adapted to the ambient noise. The speed information is transferred via CAN-B.
Interfaces
The CAN-B is used to communicate with the instrument cluster (A1). In this way the instrument cluster (A1) receives the audio and telephone information for the multifunction display (A1p13) in the instrument cluster (A1) and the time from the radio (A2) via this bus system.
The time can also be synchronized between the radio control panel (A2) and the instrument cluster (A1) via the MFL.
Diagnosis takes place via STAR DIAGNOSIS.
