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PAMS
Technical Documentation
Power Cable PCH–4J
The power cable connects the standard handsfree unit HFU–2 to the ve-
hicle's power supply. The red wire must be connected to the + voltage on
the vehicle's power supply via the supplied fused connector. The black
wire must be attached to a good negative GND connection.
The blue ignition sense (IGNS) wire is connected to +12 V voltage con-
trolled by the vehicle's ignition key via the supplied fused connector.
See section "Ignition Sense".
The yellow wire is used for car radio muting (XCRM). The line goes down
to 0 volts during a call. See section "Car Radio Muting".
The green wire is used for motor antenna (AMC). The voltage in this out-
put is +12 V whenever the phone is on. See section "Antenna Motor Con-
trol".
External Mobile Antenna (not supplied)
The cellular phone is designed to operate with a high quality external an-
tenna. However, due to many different types of antennas being available,
an antenna is NOT included as part of this kit. Please, consult the dealer
to find out which is the most suitable antena type for your installation.
Installation
There are some important aspects that require special attention in posi-
tioning car kit accessories.
The positioning of the phone holder is the most important factor when try-
ing to achieve the most comfortable position for the user. The location of
the holder should be selected so that the visibility of the phone's display is
good under all lighting conditions, but not so that the driver's attention is
easily distracted. The holder should be located so that the driver can easi-
ly reach the keypad. Under no circumstances should the holder prevent
the driver from controlling or operating the vehicle in any way or observ-
ing traffic.
The HF microphone should be installed according to the directions in the
separate microphone installation guide. Ensure the microphone is as
close to the driver's mouth as possible, and attached to a surface that is
mechanically quiet. The microphone should be mounted at least 3 ft/1 m
away from the handsfree unit speaker to avoid acoustic feedback.
Ensure cables are routed as far away as possible from the vehicle's elec-
tronic systems (refer to WARNINGS)*. Also, ensure that cables are not
subjected to undue mechanical stress e.g. under seats or against sharp
edges.
* To prevent disturbance, cables should be routed as far away from the
interference source as possible
Issue 1 07/99
CARK 64 / 91 Installation Guides
NSE–5
Page 9
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