Harman Becker Automotive Systems MULF2-HI Bluetooth Handsfree Carkit User Manual UserManual MULF2
Harman Becker Automotive Systems Bluetooth Handsfree Carkit UserManual MULF2
08 user manual
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Date Name
Drawn MULF2
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Harman/Becker User Manual 1
01 04.08.06 Schneid Automotive Systems of 66
Rev. Change / Note Date Name File UserManual_MULF2.doc Printed. 04.08.06
MULF2
BMW
User Manual
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Inhaltsverzeichnis
1 Abstract ........................................................................................................................... 3
1.1 Revision index............................................................................................................ 3
1.2 Applicable documents................................................................................................ 3
1.3 Abbreviations ............................................................................................................. 4
1.4 Purpose of the document........................................................................................... 5
2 General............................................................................................................................. 5
3 Power supply................................................................................................................... 5
4 Antenna............................................................................................................................ 5
5 Bluetooth ......................................................................................................................... 5
5.1 Generally.................................................................................................................... 5
5.2 Summary.................................................................................................................... 6
6 FCC note.......................................................................................................................... 6
MULF2
BMW
User Manual
Harman/Becker reserves the copyright to this document. It must not be copied, communicated or made available to third parties without the written authorisation of Harman/Becker
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1 Abstract
1.1 Revision index
No. State Version Change Description Changed pages Autor
1 ready 1.0 All Schneider
1.2 Applicable documents
Ref. State Version Document Description Autor
MULF2
BMW
User Manual
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1.3 Abbreviations
Document Description
BT Bluetooth
EC Echo cancellation
NR Noise reduction
MULF2
BMW
User Manual
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1.4 Purpose of the document
User manual for the MULF2.
2 General
The MULF2 is not sold direct to the customer. The MULF2 will be delivered directly to the car
manufacturer. MULF2 is manufactured for BMW AG.
BMW AG is responsible for the correct installation of the MULF2. This document is a guide for the
correct use of the MULF2.
3 Power supply
Normal operation voltage of the MULF2 is 9V – 16V. The nominal supply current of the MULF2 is
180 mA at 14V. The MULF2 may only be operated on a fused power supply. The recommended
fuse is a 10A Type.
4 Antenna
The MULF2 has an external antenna connector. The connector is a FAKRA type. Only the
following antenna should be connected to the MULF2:
• 6 928 461 (BMW part number)
This antenna has a gain of 2,1 dBi.
It is possible, to connect the antenna via a coax cable.
5 Bluetooth
5.1 Generally
Bluetooth operates in the 2.4 GHz ISM (Industrial Scientific Medicine) band at 2.4 GHz. A
frequency hop transceiver is applied to combat interference and fading. Modulation is GFSK
(Gaussian Frequency Shift Keying) with a BT=0.5. The Modulation index is 0.32. A binary one is
represented by a positive frequency deviation, and a binary zero is represented by a negative
frequency deviation. The symbol rate is 1 Ms/s. For full duplex transmission, a Time-Division
Duplex (TDD) scheme is used. On the channel, information is exchanged through packets. Each
packet is transmitted on a different hop frequency. A packet nominally covers a single slot, but can
be extended to cover up to five slots. The Bluetooth protocol uses a combination of circuit and
packet switching. Slots can be reserved for synchronous packets. Bluetooth can support an
asynchronous data channel, up to three simultaneous synchronous voice channels, or a channel
which simultaneously supports asynchronous data and synchronous voice. Each voice channel
supports a 64 kb/s synchronous (voice) channel in each direction. The asynchronous channel can
support maximal 723.2 kb/s asymmetric (and still up to 57.6 kb/s in the return direction), or 433.9
kb/s symmetric.
MULF2
BMW
User Manual
Harman/Becker reserves the copyright to this document. It must not be copied, communicated or made available to third parties without the written authorisation of Harman/Becker
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5.2 Summary
• Modulation: GFSK, BT = 0,5
• Data rate: 1Mbit/s
• working frequency range: 2402 MHz to 2480 MHz
• frequency range with guard band: 2400 MHz to 2483,5 MHz
• Channels: 79 channels with 1 MHz channel spacing
• max output power: 4 dBm
6 FCC note
In the user manual should be the following text:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.