User Guide

PAMAS
Technical Documentation
NHD–4
CAR Installation Guide
Page 4
Original 11/97
Product List
Product: Remarks: Code:
Mobile HF charging holder MCH–8
HF junction box HFJ–3
Mounting plate (w/16 screws) MKE–1
Swivel mount (w/6 screws) HHS–1
HF microphone (w/flat mounting plate) HFM–4
HF loudspeaker (w/2 fused conn. & wire ends) PCH–4
Power cable LCP–1
Handset option (optional) HSU–1
Modular 8 pin extension cable SCE–4
Mobile HF Charging Holder (MCH–8)
The holder unit MCH–8 offers an external antenna connection, handsfree
and also firm attachment to the vehicle.
Mounting Plate and Swivel (MKE–1 and HHS–1)
The mounting plate (MKE–1) and swivel mount (HHS–1) mounting
brackets are interchangeable. Either one can be used to mount the
MCH–8 or HFJ–3. The MKE–1 mounts flat and HHS–1 swivels for
adjustable mounting angles.
Junction Box (HFJ–3)
Handsfree junction box (HFJ–3) provides and controls the supply voltages
for the accessories and charge current for the handportable. In addition, it
controls the audio paths to accessories and handsfree equipment. The
jack marked HANDSET/ACCESSORY is reserved for the optional
handset.
Power Cable (PCH–4)
The power cable connects to the junction box (HFJ–3) via the 4 pin
connector. The red (+12V) and black (GND) wires connect to the battery
via the supplied fused connectors. The yellow (XCRM) wire is for car radio
mute and the blue (IGNS) wire is for ignition sense. The XCRM line goes
down to 0 volts during a call. The maximum sink current is 250 mA, (see
”CAR RADIO MUTING”). The IGNS line is connected to a +12 V voltage
source, controlled by the car ignition key. The ignition sense can utilize
voltages up to 24 V, (see ”IGNITION SENSE”).
Handsfree Microphone and Speaker (HFM–4 and HFS–6)
The handsfree microphone can usually be installed on the drivers sunvisor
or A–pillar. The main idea is to get the microphone as close to the driver’s
mouth as possible, and to attach the microphone to a surface that is
mechanically quiet. The microphone connects to the HFJ–3 MIC jack. The
loudspeaker should be mounted at least 3 ft/1 m away from the handsfree
mic to avoid acoustic feedback. The loudspeaker connects to the HFJ–3
SPEAKER jack.