User Manual

Axell Wireless Limited
Technical Literature
Lincoln/Holland Upgrade Equipment
Document Number
60
-
214701HBKM
Issue No.
1
Date
29/08/2008
Page
7
of
43
Base
stations
Warning! The door is not attached when unlocked
3. Tri-Band Cable Signal Combiner 60-214702
Tri-Band Combiner 60-214702 is built into a wall-mounted, environmentally protected (IP65)
aluminium alloy case; RF ports and connectors are also IP65 standard making the entire enclosure
and connecting ports weatherproof. The door is fitted with three locking door handles which also
serve to locate the door onto the case. Caution, the door is not attached to the case when the locking
door handles are opened.
The Combiner has connections for various RF inputs and outputs across three bands; AWS, PCN and
Cellular.
AWS and PCN Downlink signals are received from the operators’ base stations, filtered and combined
into a single path and then passed to local LCX antannas, a portion of the Downlink signal is tapped
off and fed to a fibre optic transmitter which modulates the RF signal onto a laser for transmission to
the Remote Repeater 60-214701 as optical signals over fibre optic cable.
AWS and PCN Uplink signals are received from the local LCX antannas, filtered and amplified before
being split into their respective band/frequency allocations and fed to the operators’ base stations.
Optical signals from the Remote Repeater 60-214701 are demodulated to RF and combined with the
Uplink signal from the LCX antennas after the amplification stages.
The Cellular signal path is in the Uplink direction only, Signals are received, filtered and amplified
before being fed to the operators’ base stations.
3.1. Tri-Band Combiner 60-214702 Simplified Arrangement Sketch
60-214702 features dual redundant amplification stages in the Uplink bands so that in case of any
single amplifier failure, complete signal loss would not occur in that path, allowing continued
coverage. It also has a comprehensive alarm system (each amplifier module carries its own voltage-
free contact alarm relay output). 60-214702 is powered from an AC supply at 110V.
Caution must be exercised when attempting to move or lift this unit as the gross weight of the unit is in
excess of 90kg (200lbs)