User Manual

AS4000 Operations and Maintenance
Appendix
605-0000-431
1
. Issue 1.6. Date3/2/99
Page 10 of 12 © Copyright Airspan Communications Corporation 1999
2Mbit/s Switch Interface
Shelf Alarm
LED Card
Analogue Card
Tributary Unit (TU)
Modem
1
Modem
2
Modem
3
Modem
4
Modem
15
Modem
SPARE
Modems 5-14
Modem Shelf (1 of 4 )
Tx Rx
Control
Serial Shelf Controller Bus
Multiplexed I Q and Ctrl Tx Paths
Digital CDMA Rx Bus
2 Mbit/s Rx Sig Bus
2 Mbit/s Rx Data Bus
2 Mbit/s Tx Sig Bus
2 Mbit/s Tx Data Bus
Tx
Rx
Shelf
Controller
Monitor
Card
RF Card 1
Power
Amplifiers
1
To Other Modem Shelves
Low Noise
Amplifier
RFCombiner
Shelf
Antennas
1
3 4
DIP/LNA1
4
RF Card
4
(TX)
RF Card
3
(TX)
RF Card
2
(TX)
3 2
RF Card
4
(RX)
RF Card
3
(RX)
RF Card
2
(RX)
2
From Other Modem Shelves
Diplexer
Isolators
Monitor
Card
Power Supply Units
To Shelves
and Cards
DIP/
LNA2
PA2
PA1
Backplane
Figure 3-14. AS4000 CT Block Diagram