Installation Guide - Bosch GSM 909 Executive User Manual

Two-in-one telephone system
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  • ENGLISH, page 3

INSTALLATION GUIDE

VDA plug
Some cars are supplied with a pre-installed VDA plug
and installation for mobile phone. If so, connect this
plug directly to the HF box, and do not use the cable
supplied with the handsfree kit. If your car is fitted with
an active microphone you must replace this by a passive
microphone or use a microphone level converter cable
available from your Bosch dealer.
Wiring diagram
• Connect the RED wire (+ V) to the positive pole of the
car battery. Remember to insert the fuse included
(3,15 AT).
• Connect the BLACK wire (- V) to the negative pole of
the car battery.
• Connect the YELLOW/BLACK wire (Ignition sense) in
such a way that when ignition is on the input is +12V,
and when ignition is off the input is 0V. Do not connect
directly to the ignition coil terminal.
• Connect the VIOLET wire (Radio muting) to the car
radio's muting wire. During telephone conversation
the violet wire will connect to ground (max 100 mA)
and thereby mute the car radio loudspeakers. If the
radio does not have a built-in muting option the violet
wire can be used to operate a Stereo Mute Box (not
supplied with this kit).
Handset cradle (GSM 909 Executive)
When placing the handset cradle, please beware of the
safety of the driver as well as the passengers in case of
car accidents. Do not place the handset cradle too far
from the steering wheel. Also, do not install any items in
front of an airbag. Regulations on this point must be
followed very carefully.
Mobile cradle (GSM 909 DUAL/DUAL S)
When placing the mobile cradle, please beware of the
safety of the driver as well as the passenger in case of
car accidents. Also do not install any item in front of an
airbag.
6
Regulations on this point must be followed very carefully.
If in car mode (mobile in cradle) the mobile is not in
use. Therefore the mobile cradle can be mounted in a
separated place.
External antenna
An external antenna must be connected since the
mobile antenna is disconnected when the mobile phone
is placed in the cradle. External antenna is not included
in this handsfree kit.
Microphone and loudspeaker
The handsfree car kit uses digital signal processing
(DSP) technology allowing full duplex conversation
under natural speech and sound level. In order to obtain
optimum performance, please observe:
• The handsfree microphone must be placed as close to
the driver's mouth as possible (30-35 cm) and pointing
directly toward the mouth. A typical placement is
above the driver's door or at the roof near the cabin
light, where there might be minimum wind noise. It is
not recommended to place the microphone on the
steering column or on the dashboard.
• The location of the speaker is less critical, but the
distance to the microphone should be more than 80
cm. Do not place the speaker behind any lining as this
might reduce the speaker sound.
• Both the speaker and the microphone should be
firmly fastened to obtain the best sound quality.
• It is possible to mount the microphone in two ways:
You can either tape the microphone directly on the
surface, or you can mount the small bracket with 2
screws and then tape the microphone on the bracket.
• It is also possible to mount the loudspeaker in two
ways: You can either use the large mounting bracket
with 2 screws and then click the loudspeaker into the
bracket, or you can use the small bracket which is
already attached to the speaker. The speaker can be
placed horizontally or vertically with both brackets.
With the small bracket it is possible to turn the speaker
in any angle required.
INSTALLATION GUIDE
Wiring diagram
or
Handset Cradle
Click bracket
Mobile
External antenna
Cradle
(Not included)
FME
connector
Handsfree module box
Loudspeaker assembly
Loudspeaker
Large mounting bracket
Small mounting bracket
Loudspeaker
Microphone
3.15 AT
Red
+ V to battery
Black
– V to battery
Yellow/Black
Ignition
Violet
Radio mute
VDA plug
Directional microphone
Microphone
7
GB

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