Installation Instructions

FIXED TERMINAL INSTALLATION HANDBOOK
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28/42 09/2001
IH – PS8433EAE01
This document is the property of MATRA NORTEL COMMUNICATIONS and should not be copied or circulated without permission
for wide band BERs:
♦ – 80 dBm if the duplex gap is between 5 and 10 MHz,
♦ – 87 dBm if the duplex gap is between 10 and 20 MHz,
Ideal scenario: the background noise represents an antenna noise
factor of 8 dB (an uncluttered rural area). The decoupling required to
prevent any deterioration is 35 dB.
Normal scenario: the background noise represents an antenna noise
factor of 20 dB (semi–urban area).
The required decoupling is 30 dB.
• desensitizing of the receiver by the signal transmitted by another radio
terminal.
If the radio terminals in question are all operating within the same base
station connected communication and are at the limit of the coverage
area, the decoupling must be 40 dB for a duplex gap of between 10
and 20 MHz and 50 dB for a duplex gap of between 5 and 10 MHz.
If they are operating within different base station connected
communications and are at the limit of the coverage area, the
decoupling must be 50 dB for a duplex gap of between 10 and 20 MHz
and 60 dB for a duplex gap of between 5 and 10 MHz.
If the site is not located at the coverage limit, the 30 dB requirement
may be made less stringent.
Note: Direct mode on multiple installation sites.
It is not possible to make direct mode calls, without desensitizing
neighbouring receivers in BS connected mode.
4.3.1.3 Antenna cable
• Route the antenna cable near to the wall unit location following the
safety precautions given in Chapter 3.
• On the cable end, connect an elbowed TNC male coaxial connector
(local supply).