User's Manual

mBSC081921-12 System
Operation Manual Issue 2
© 2009, Bravo Tech Inc. Page 5
Figure 2-2. Host Unit
2.3.1 Basic Functions of HU
HU provides the following basic functions.
• BIU (Base station Interface Unit): RF interface module with Base Station
• FIU (Fiber optic Interface Unit): Optical TRX module. Convert RF signals to Optic
signals
• RCU (Remote Control Unit): Ethernet Interface module for Network Management
Software
• PSU (Power Supply Unit): Power Supply unit for providing DC power to BIU, FIU and
RCU module
2.3.2 HU Interface Ports Description
Each interface port, shown in Figure 3, is described in below Table 1.