User Manual

dTRU Unit Description
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.
1.1.1 Main Functions
The dTRU is a distributed main CPU DMCN and its main functions are:
• Transmits and receives radio frequency signals - GMSK, 8-PSK, 16-QAM
or 32-QAM modulation
• Processes signals
1.1.2 Variants
There are two dTRU variants available:
• Built in hybrid combiner connected through jumper cables
• Built in hybrid combiner connected through a switching relay
1.2 Dimensions
The dTRU has the following dimensions:
Table 1 Size and Weight
Height Width Depth Weight
400 mm
(9 HE x 44.45 mm)
71 mm
(14 TE x 5.08 mm)
270 mm
6.2/7.6 kg
1.3 Power Consumption and Heat Generation
Table 2 Power Consumption and Heat Generation
Max. power consumption Max. heat generation
485 W 380 W
2 8/1551-LZA 701 0001 Uen PC1 2010-09-26