Reference Manual Part 1

RBS 2106
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
The Tower Mounted Amplifier Control Module (TMA-CM) is used to provide
ddTMA 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 a
TMA-CM is used, then it is located in one of the four OXU positions 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
for the RBS. It is the responsibility of the owner/operator to obtain the type
approval. To not violate the RBS function, the following is recommended:
• Any transmission equipment installed in the TM must fulfil the requirements
in the Generic EMC standards IEC61000-6-3 and IEC61000-6-2
• All in/out interfaces (signal and power), which pass the cabinet border
between two different EMC zones, must be sufficiently EMC-protected
(transient protection, filtering)
• Shielded cables are recommended for connection between transmission
equipment and the cabinet connection field, and between transmission
equipment and the DXU or DXX.
The recommended installation is shown in the figure below
21 (36)
EN/LZT 720 0222 Uen R6A