User's Manual

Table Of Contents
mBSC-CM RUM
mBSC-CM December 15, 2015
Page 7
to the BTS receivers. Internal splitters, combiners, and software controlled attenuators enable customized
designs to support various RF inputs scenarios.
BIU
Opreate
Tx700
Rx
4
IN
Rx3
IN
Rx2
IN
Rx1
IN
Tx4
OUT
Tx3
OUT
Tx
2
OUT
Tx1
OUT
Tx850
Tx1900
Tx2100
Tx2600
Rx700
Rx850
Rx1900
Rx2100
Rx2600
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 2 independent bi-directional fiber connections.
FIU
Opreate
FIBER2
TX2
RX2
FIBER1
TX1
RX1
Figure 6FIU