Dtru Topology - Ericsson RBS 2207 Configuration Manual

RBS 2207
The radio performance of a configuration is defined at the TX and RX antenna
reference points at the RBS border. There is an X close to every reference
point in the following figures. The RBS border is not included in the figures.
The equivalent output power with SW power boost (TX diversity) configured
is the original output power specified for the basic configuration, increased by
typically 3 dB (if separate TX antennas are used). The configurations that
support SW power boost are listed in Section 6.5 on page 14.
Functional views of radio signal paths for various configurations are shown in
Figure 4 on page 8 up to and including Figure 7 on page 10. Only components
necessary to illustrate the configuration are shown.
5.1

dTRU Topology

Configuration of Hybrid Combiner
The dTRU can be configured with or without the hybrid combiner, using two
cables external to the dTRU, see Figure 4 on page 8.
Later versions of the dTRU do not use external hybrid cables, see Figure 5 on
page 8.
RX Signals Distributed from Two Ports
The RX signals can be distributed from the RX1 and RX2 ports to all four
receivers when both transceivers are connected to the same antenna system.
EN/LZT 720 0135 Uen R3A
Radio Configurations
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