Ericsson RBS 2106 Hardware Reference Manual page 331

1 Product Overview
The dTRU is a 2-TRX replaceable unit. A TRX is a transmitter/receiver and
signal-processing unit, which transmits and receives one carrier. There are
different versions of dTRU depending on the frequency band and modulation
capability, that is, both GMSK and 8PSK (EDGE) or GMSK only.
The dTRU has two TX antenna terminals and four RX antenna terminals. The
dTRU features a built-in hybrid combiner. The hybrid combiner can be used to
combine the two TX antenna terminals to one common terminal.
Two of the RX antenna terminals are used for 2-branch diversity reception.
The dTRU is hardware prepared for 4-branch diversity reception through the
remaining two antenna terminals.
1.1 Main Functions
The dTRU is a distributed main CPU DMCN and its main functions are:
•
•
2 Dimensions
The dTRU has the following dimensions:
Table 1
Height
400 mm
(9 HE x 44.45 mm)
3 Power Consumption and Heat Generation
Table 2
Max. power consumption
485 W
Transmits and receives radio frequency signals – GMSK or 8PSK
modulation
Processes signals
Size and weight
Width
71 mm
(14 TE x 5.08 mm)
Power consumption and heat generation
Depth
270 mm
Max. heat generation
380 W
3(6)
Weight
7.6 kg
EN/LZT 720 0242 R1A