User Manual

AS4000 Central Terminal Installation and
Commissioning
DLP 019
605-0000-432
Issue 1.3a Date 18th October 1999
Page 1 of 2 Copyright Airspan Communications Corporation 1999
SETTING THE RACK INTO SERVICE.
1. Setting the rack into service:
Switch off power at the Breakers
Remove all test equipment
2. Connecting Antenna Feeder Tails
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. See Figure 47. If PA2 and the TX filter units are fitted the second
antenna should be connected to the TX filter unit. See Figure 47.
Note: See Antenna and Feeder Installation and Commissioning Procedure, 605-
0000-433 for details of feeder grounding.
3. Using a single Antenna
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.
Front
When only
using one
antenna
connect
here
TX shelves 1&2
/ RX all shelves
Coupler 1
DIP/LNA1
TX Filter
Shelves 3&4
TX Filter
View of top of RF Shelf
Coupler 2
Connections to level
control unit if fitted else
terminate with 50 ohms
Figure 47. RF Antenna Connections