User's Manual

Table Of Contents
MBSC0800-040-RU
MBSC0800-040-RU July 02, 2014
Page 7
to the BTS receivers. Internal splitters, combiners, and software controlled attenuators enable customized
designs to support various RF inputs scenarios.
Figure 5BIU
3.2.1.2 FIU (Fiber Interface Unit)
The FIU provides the interface between the combined RF signals (BIU) and the optical fiber connections.
Each FIU is equipped for 2independent bi-directional fiber connections.
Figure 6FIU
BIU
Opreate
Tx700
Rx4
IN
Rx3
IN
Rx2
IN
Rx1
IN
Tx4
OUT
Tx3
OUT
Tx2
OUT
Tx1
OUT
Tx850
Tx1900
Tx2100
Tx2600
Rx700
Rx850
Rx1900
Rx2100
Rx2600
FIU
Opreate
FIBER2
TX2
RX2
FIBER1
TX1
RX1