Manual Part 3

RBS 2207 Radio Configurations
The radio performance of a configura tion 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 inc luded 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 ante nnas are used). The configurations th at
support SW power boost are listed in Section 6.5 on page 14.
Functional views of radio signal paths for various c onfigurations are shown in
Figure 4 on page 8 up to and including Figure 7 on page 10. Only components
necessa ry to illustrate the config uration are shown.
5.1 dTRU To pology
Configuration of Hybrid Combiner
The dTRU can be configured wit h or w ithout 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 R X signals can be distributed from the RX1 and RX2 ports to all four
receivers when both transceivers are connected to the same an te nna system.
7 (14)
EN/LZT 720 0135 Uen R3A