User's Manual

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3.2 Component of SMDR-NH124 Remote Unit
The following figure shows internal configuration of Remoe Unit with fully RF equipped.
Figure 3.2 – Inside of Remote Unit
Remote Unit receives TX optical signals from Head-End and converts them into RF signals. The converted
RF signals are amplified through High Power Amp in a corresponding RDU, combined with Multiplexer
module and then radiated to the antenna port.
When receiving RX signals through the antenna port, this unit filters out-of-band signals in a
corresponding RDU and sends the results to Remote Optic Module to make electronic-optical
conversion of them. After converted, the signals are sent to a upper device of ODU. ROU can be
equipped with up to three RDUs (Remote Drive Unit)
The following table describes components on Remote Unit
No.
Unit
Description
Remark
1
RDU+BPF
Remote Drive Unit
Filter and high amplify TX signals;
Filter and amplify RX signals;
Remove other signals through BPF
BPF is exclude from VHF+UHF module