User Manual

Table Of Contents
Ericsson Internal
DESCRIPTION 32 ( 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
Gas Collecting Kit
The acid leads can be supplied with a gas evaporating kit, which evacuates
gases from the cabinet.
Number of units: 0 1
HCU
The HCU contains three hybrid combiners. Each hybrid combines two RF
signals, delivered from the dTRU, into one.
Number of units: 0 1
OXU (RBS 2106 and RBS 2106i only)
The following Optional Expansion Unit (OXU) positions are available:
Four spaces in the DXU/PSU subrack of the RBS 2106 and the RBS 2106i
(RUs that are typically located in the OXU slots include the DXX and the
TMA-CM)
One 19-inch OXU position is available between the CXU and the CDU
subrack (used for HCU and ASU in co-sited cabinets)
Smoke Detector
The smoke detector is an optical device. Its purpose is to detect visual smoke.
When smoke enters the detector, a light beam is deflected towards a photocell
and an alarm is activated.
Number of units: 0 1
Sound Hood
The sound hood attenuates noise from the climate unit, heat exchanger, and
air condition.
Number of units: 0 1
TMA-CM
One or two Tower-Mounted Amplifier Control Modules (TMA-CM) can be used
to provide ddTMAs with 15 V DC power through the bias injectors. It also
identifies ddTMA faults and forwards this information to the alarm module in the
RBS. If TMA-CMs are used, then they are installed in the DXU/PSU subrack.
Number of units: 0 2
TM
The Transport Module (TM) is a space in the cabinet reserved for transmission
equipment. The RBS is type-approved with transmission equipment from
Ericsson. Equipment from other manufacturers requires a new type approval