BMW 7 Series: Technical Information
Not only does the Universal Bluetooth Hands-Free System offer a means to wirelessly integrate a mobile phone into the vehicle, it also can be diagnosed using the DISplus or GT1.
The control module should always be coded to the specific vehicle that it is installed into to ensure optimum system performance. Coding of the module can be done using the DISplus or GT1 with CD33 or higher installed.
The ULF control module contains several controllers that provide the following functions:
1. Bluetooth Control Circuit: The Bluetooth control circuit is physically connected to the Bluetooth antenna. It establishes the connection between the Bluetooth mobile phone and the vehicle, de-scrambles the incoming call/signal from the phone, scrambles the outgoing signal from the microphone for transmission to the phone, plus controls all communication to paired Bluetooth devices.
2. Hands-free Control Circuit: The hands-free control circuit in the ULF controls the input/output of audio frequency signals in handsfree mode. The hands-free mode is designed for full-duplex transmission. This means the user can listen and speak simultaneously. Voice transmission takes place via a microphone located in the interior of the vehicle.
Pressing and holding the send/receive button until an audible beep is heard will activate the integrated voice recognition system and place the system into a hands-free mode.
3. Audio Output Control: The incoming signal from the Bluetooth phone is processed, sent through the radio and to the speakers.
4. Audio Input Control: The outgoing audio received from the vehicle microphone is processed and transmitted to the Bluetooth phone.
5. I/K-Bus Interface: The interface in the ULF control module for the I/K-bus controls the procedure for transmitting and receiving data telegrams via the I/K-bus in connection with other components on the bus.
6. Power Module: The power module in the ULF control module regulates the voltage supply and monitors system shutdown in the event of an under voltage situation in the vehicle.
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System Overview
Fig. 15: Identifying Power Module System Components
Voice Recognition
The voice recognition for the this system is integrated into the ULF Control
Module and utilizes the same voice
commands as thos
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General Information
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Safety regulations
SAFETY AT WORK
INFORMATION ON HAZARDS
Information on VEHICLE PROTECTION
Materials
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