Airspan AS4000 - Page 18

Central Terminal Level Control Unit
Operators Manual
GSI 002
605-0000-428
Issue 1.2. Date 5/11/98
Page 2 of 14
Level Control Unit
Modem Shelf 1
Modem Shelf 2
Modem Shelf 3
Modem Shelf 4
RF Combiner Shelf
Antenna
Port 1
Coupler
Shelf
1 & 2 Tx
1, 2, 3, 4 Rx
Shelf
3 & 4 Tx
‘B’
Communication lines to
each shelf controller
Includes keypad and display for user I/O
Digi Board
Sitespan PC
Antenna
Port 2
Coupler
or
X25 PAD
To
Element
Manager
Figure 1. LCU Connections to AS4000 CT Rack