Reference Manual Part 1

RBS 2206
FCU
The Fan Control Unit (FCU) controls the fans in the cooling system by regulating
fan speed. The FCU is controlled by the DXU.
Number of units: 1
IDM
The Internal Distribution Module (IDM) is a panel for distributing the internal
+24 V DC power to the various units. Each distribution circuit in the cabinet is
connected to a circuit breaker in the IDM.
Number of units: 1
PSU
The Power Supply Unit (PSU) are available in two versions, PSU AC for
connection to AC mains, or PSU DC for connection to -48 or -60 V DC power
supply.
• The PSU AC converts 120 – 250 V to regulated +24 V DC
• The PSU DC converts -48 or -60 V DC to regulated +24 V DC
Number of units: 0, 2, 3, 4
DC Filter
The DC filter unit is the interface for +24 V DC power supply or battery backup.
Number of units: 1
5.2 Optional Hardware Units
This section describes the hardware units that are available as options for
the cabinet.
ASU
The ASU is part of co-siting, that is, using another cabinet together with a GSM
RBS 2206 cabinet in the same sector. The ASU allows a TDMA (or other)
cabinet and a GSM RBS 2206 cabinet to share RX antennas.
Number of units: 0 – 1
17 (28)
EN/LZT 720 0225 Uen R6A