Reference Manual Part 1

RBS 2106
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) converts 120 – 250 V to regulated +24 V DC.
Number of units: 2 – 4
5.2 Optional Hardware Units
This section describes the RBS 2106 optional hardware units.
ASU
The Antenna Sharing is a part of co-siting, that is, using another cabinet
together with a GSM RBS 2106 cabinet in the same sector. The Antenna
Sharing Unit (ASU) allows a TDMA (or other) cabinet and a GSM RBS 2106
cabinet to share RX antennas.
Number of units: 0 – 1
ADM
The Auxiliary Distribution Module (ADM) handles distribution and fuse
connection of system voltage (+24 V DC and -48 V DC) to the transport module
(TM).
Number of units: 0 – 1
Battery Backup
Batteries can be installed inside the cabinet in either of the TM/BM spaces
located to the left of the BFU. An external source of battery supply can also
be used through the DC filter. if this is the case, then internal batteries can
not be used.
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N/LZT 720 0222 Uen R6A