Product Description

Limited Internal
PRODUCT DESCRIPTION 16 ( 27 )
EAB/SEMCON Staffan Paulusson EN/LZT 720 0491 Uen
EAB/RKW Lena Jonsson Borg 2004-12-28 R1A
Prepared (also subject responsible if other) No
Approved Checked Date Rev Reference
E
Distribution of +24 V DC power to the IDM
ddTMA
The ddTMA is to be mast-mounted and placed close to the antenna. It
improves the receiver sensitivity.
Number of units per cabinet: 0 6
OVP
The OVP module is a connection and overvoltage protection device for external
alarms, ESB, and PCM links. The OVP modules protect equipment inside
the RBS from overvoltages and overcurrents that can occur in external lines.
Examples of equipment requiring OVP include transmission lines, ESBs, and
external alarms. The OVP modules are mounted in the DF.
Number of units: 0 7
DXX
The DXX is a plug-in unit that combines cross-connect, control and interface
functions. It has four 2 Mbit/s interfaces complying with the G.703 standard. If
the DXX option is used, then it is located in the 12 TE (x 5.08 mm) Optional
Expansion Unit (OXU) position in the DXU/dTRU subrack.
Number of units: 0 1
ESB
TG synchronisation is the technology used to expand one RBS 2107 cabinet
with another RBS cabinet in the same cell. The ESB is the cable between
the DXUs.
Number of units: 0 1
Gas Collecting Kit
The batteries can be fitted with a gas evaporating kit, which removes gases
from the cabinet.
Number of units: 0 1
OXU
The following Optional Expansion Unit (OXU) positions are available:
Two spaces in the DXU/dTRU subrack 1 x 5 TE and 1 x 12 TE (x 5.08 mm)
Two 19-inch OXU positions are available below the DXU/dTRU subrack
RUs that are often located in the OXU slots include the DXX and the TMA-CM.
The 19-inch position below the DXU/dTRU subrack is used for transmission
equipment.