User's Manual

34/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01
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– cable guides and ladders,
– cable hangers and cable grounding kits,
– antenna heaters (to prevent antenna icing).
Grounded entry point
Each BS requires a grounded entry point in order to ground BS components and cables. Refer to local
electrical code requirements when choosing a grounded entry point for the BS.
Lightning protection
BS site lightning protection requires:
– installing lightning arresters on IF and RS-422 cables,
– grounding X-Pol RBS Txs, X-Pol RBS Rxs and mounting poles,
– grounding IF cables,
– lightning rods.
Lightning arresters
The installation of both IF and RS-422 cable lightning arresters is strongly recommended. If light-
ning arresters are not used, equipment is not covered by the warranty agreement.
Lightning arresters should be installed as close to the rooftop IF cable entry point as possible. Li-
ghtning arresters must be grounded according to international, national, territorial, regional and
municipal safety codes.
Lightning rods
Equipment that may be subject to lightning strikes must be protected by a lightning protection sys-
tem that is installed in accordance with all applicable international, national, territorial and local
regulations and practices.
This may require the installation of lightning rods, a rooftop ground loop, and a main building
ground.
X-Pol RBS Tx and X-Pol RBS Rx
The X-Pol RBS Tx and X-Pol RBS Rx cases, mounting bracket and mounting pole must be groun-
ded to the building power utility ground.
IF cable
IF cables must be grounded at the cable entry point, every 50 m (164 ft) between the cable entry
point and the X-Pol RBS Tx or X-Pol RBS Rx, and at the base of a tower.
Use a standard cable grounding kit available from the recommended cable manufacturer.
IF cable installation
IF cables provide a signal path for data, and power for the X-Pol RBS Tx and X-Pol RBS Rx. IF cables
should be approved by Alcatel, and rated for the particular environment where they are installed (indoor,
outdoor, riser or plenum).
Cable run requirements for the inside and outside of the equipment room vary from site to site. Alcatel
currently recommends only certain cable types, connectors and manufacturers. However, customers
can contact Alcatel to inquire about using alternate cable solutions if the currently approved cables do
not suit a specific application.
Because there are many factors associated with choosing a suitable IF cable, customers are advised by
Alcatel of the manufacturers and part numbers recommended for these cable assemblies.