User Manual

Table Of Contents
Ericsson Internal
DESCRIPTION 30 ( 50 )
/ XSNSIXI 129/1551-LZA 701 0001 Uen
CBC/ XRX/M ( Kai Lian) 2011-05-05 F
Prepared (also subject responsible if other) No.
Approved Checked Date Rev Reference
FCU
RBS 2106 and RBS 2106i include a Fan Control Unit (FCU) that controls the
fans in the cooling system by regulating fan speed. The FCU is controlled
by the DXU.
RBS 2106 V3 does not include an FCU as a hardware. Instead the fans are
controlled directly from the DXU.
Number of units: 0 for RBS 2106 V3, 1 for RBS 2106 and RBS 2106i.
IDM
The Internal Distribution Module (IDM) distributes 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 AC to regulated +24 V DC.
Number of units: 2 4
6.2 Optional Hardware Units
This section describes the RBS 2106 optional hardware units.
ASU
The Antenna Sharing Unit (ASU) is a part of co-siting, that is, using another
cabinet together with a GSM RBS 2106 cabinet in the same sector. The 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.