Airspan AS4000, Installation Manual

Page: 76 / 193

Printed Documentation
72
Central Terminal Card Installation
The CT rack is shipped with shelves fitted to customer requirements and internal cabling
complete.
Preliminary
In a new installation ensure that the CT Circuit Breakers located on the lower assembly of the
Combiner Shelf are set to the OFF position (Down). See and that the breakers on the Fuse
and Alarm panel of the Expansion Rack are switched are set to the OFF position (down) See.
Warning: Before handling any cards or modules, observe full anti-static
precautions
CAUTION PA INSERTION
Care should be taken when installing PAs to ensure that the card connector mates with the
backplane connector correctly. Any attempt to ram the card home or force the card into he
slot may cause damage to the connector. Insert the card until the connectors engage, ease
the card into the backplane until fully engaged. Lock top and bottom with a screwdriver. If
resistance is met, remove the card and reinsert. If difficulty persists contact the Airspan
service centre.
CAUTION DIP/LNA INSERTION
Care should be taken when installing DIP/LNAs to ensure that the card connector mates with
the backplane connector correctly. Any attempt to ram the card home or force the card into he
slot may cause damage to the connector. The board extractor levers may be used to assist
with insertion, when the card is home press the body of the DIP/LNA to ensure that the
connector is fully engaged. If resistance is met remove the card and reinsert. If difficulty
persists contact the Airspan service centre.
WARNING: Isolation of power from the rack is only achieved by ensuring that both
circuit breakers are in the off position.
Part of RF Combiner Shelf showing Circuit Breakers.