Handbook

PBL UHF1/1A 1 & 2 Air Interface
Maintenance Handbook
H/book Number:-60-055900HBKM
Issue No:-2
Date:-20/10/2003
Page:-
78 of 85
6. INSTALLATION
6.1 Initial Installation Record
When this equipment is initially commissioned, please use the equipment set-up record sheet
in Appendix A. This will help both the installation personnel and AFL should these figures
be needed for future reference or diagnosis.
6.2 General
The size and weight of the wall units mean that they represent a significant health hazard
unless they are mechanically installed in the correct manner. In the interests of safety this
should be done before any electrical, RF, or optical connections are made.
It is important in determining the location of the wall units that space is allowed for access
to the front and underneath of the equipment. To enable maintenance to be carried out, the
door must be able to fully open. The location must be served with a duct to allow the entry
of cables into the unit.
6.3 Electrical Connections
The mains power supply and the alarms are connected through an IP65 connector which
should need no further attention once connected. It is recommended that the AC power
connection is approved by a qualified electrician, who must satisfy himself that the supply
will be the correct voltage and of sufficient capacity.
All electrical and RF connection should be completed and checked prior to power being
applied for the first time.
6.4 Optical Connections
The optical input and output ports are be located on a bracket fixed to the lower inside of the
case. The optical fibres from the tunnels enter through a cable gland on the case underside
The ports are supplied with a green plastic cover, which must be removed prior to the
connection of the fibre cable. Ensure that transmitter and receiver fibre cable are identified
to prevent misconnection. At the master site, the fibre transmitters are in the downlink path
with the receivers in the uplink. At the remote sites the fibre transmitters are in the uplink
with the receivers in the downlink. Where some of the fibre optic transmitter outputs are
split with optical couplers to provide a connection to more than one remote site, care must be
taken to ensure that the correct connections are made.
Ensure that connections are kept clean and are fully tightened.