Airspan AS4000, Installation Manual

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Printed Documentation
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Some Installations may use directional antennas and use two DIP/LNAs for a two shelf
system. in this situation Shelf 1 connects to DIP/LNA 1 and Shelf 2 to DIP/LNA 2. See Hybrid
Rack Modification for Directional Antenna
Two Antenna Installations
In new installations the protective boots of the antenna feeder tails free ends should be kept
in position until the tail is actually connected. Form one of the tails carefully (avoid tight bends,
minimum bend radius is 125mm), to connect with the N-Type sockets on the Coupler on top
of the DIP/LNA module in the Combiner Shelf. If PA2 and the DIP/LNA2 units are fitted the
second antenna should be connected to the DIP/LNA2.
Single Antenna Installations
If modem shelves 3 and 4 are not installed it is possible to install only 1 antenna and connect
the feeder to the output port of DIP/LNA1 Unit.
If the Combiner Shelf is not equipped with DIP/LNA2, it is recommended that the second
antenna should be terminated with a 50ohm termination. The termination can be made either
at the base of the dipole if only one feeder is fitted, or at the base of the second feeder if the
second feeder has been provided in readiness for future shelf expansion.
Card Provision into existing installation
a) Shelf 3 (Top shelf of expansion Rack)
When installing cards into an existing installation the power is already connected to the DA
CT Rack and the cards should be inserted in the order listed below.
Insert the following cards into the Combiner Shelf (located in the DA CT Rack):-

1 RF Power Amplifier module (2 PAs per module) in the right hand position in the
combiner shelf located in the combiner rack.- Note orientation of the PA module.

1 DIP/LNA2 (Terminate output with 50ohm termination.)

1 x PSU’s

1 x RF Card (RF) (Third Slot)
Insert the following cards into the Modem Shelf:-