User Manual

Table Of Contents
RBS 2103Macro Outdoor
Number of units: 1.
ACB Alarm Collection Board
The ACB is the connection point in the cabinet for external alarms that are
connected t o the EAC U outside the cabinet.
Number of units: 1.
BFU Battery Fuse Unit
The BFU provides a battery circuit breaker for one battery and connects the
battery to the +24 V DC busbar. The BFU also supplies +24 V DC to the ECU.
Number of units: 0 2.
CDU - Combining and Distribution Unit
The CDU is the interface between the transceivers and the antennas. Common
functions include TX combining, RX preamplifier and distribution, antenna
system supervision, and Tower M ounted Antenna (TMA) support.
Number of units: 1 3.
DXU - Distribution Sw itch Unit
The DXU is the central c ontrol unit for the RBS. Common functions include
distribution switching, BSC interface, timing, external alarm collection, local
bus control, and interface switching.
Note: In a master-extension configuration, The DXU is used only in the
master cabinet.
Number of units: 0 1.
ECU - Energy Control Unit
The ECU controls and supervises the power equipment and the climate control
equipment. The ECU also monitors the cabinet temperature.
Number of units: 1.
IDM - Internal Distribution Module
The IDM provides distribution and fusing for the +24V DC system voltage.
Number of units: 1.
10 (20)
EN/LZT 720 0 221 Ue n R1A