User Guide

PAMS
Technical Documentation
NME–3
General Information
Page 6
Issue 1 10/99
Figure 1. System Overview of CD949
CD949 Radio Unit
NME–3
Handset
RTE–2HJ
VDA Car Signals
HF Audio
Audio Line–Out
M/FBUS
GSM900
Antenna
RS232
Data IF
cradle
CRD–8
The GSM Transceiver is the main part of the Product, carring the main
GSM radio. Its has 3 Connectors:
1. System connector (Powersupply , Car signals, Audiosignals,
Handset Cardata)
2. RF connector (GSM antenna)
3. Data Connector (Laptop)
The features of the GSM Tranceiver are listed below
1. Class 2 (8W) phase GSM 900 transceiver
2. Powersupply
3. Support of ignition sense and backlightdimming signals
4. Delivery of Carradiomute and Antenna motor control signals
5. High Quality Handsfreeaudio (car enviroment)
6. Poweramplifier for 4W Handsfree Loudspeaker
7. Support of active Handsfree microphone according to VDA
standard
8. Delivery of lineoutsignal to use the Carradios amplifiers and
Loudspeakers for Handsfree (balanced)
9. SIM reader for large SIM–Card
10. RS–232 interface for Laptop connections
11. Connection to Handset
12. Car data interface for remotecontrol and Data applications