User's Manual

Confidential & Proprietary 10/19
Section2
System configuration and Functions
2.1 eROU(edge Remote Optic Unit)
eROU receives TX optical signals from eHUB and converts them into RF signals. The converted RF signal is
radiated to the antenna port via the AMP and Multiplexer.
When receiving RX signals through the antenna port, this unit filters out-of-band signals in a
corresponding Multiplexer and sends the results to OPTIC to make electronic-optical conversion of them.
After converted, the signals are sent to a upper device of eHUB.
The eROU supports up to 4 bands.
In addition, if band extension is required, another eROU can be added up to three using optical splitters
and RF ports. However, the band expansion equipment will be developed in the future.
And eROU is divided into an Internal product with an antenna and an External product without an antenna.
Figure 1. eROU Configuration Diagram
CASCADE_KIT
eROU
cROU
aROU
aROU
External PSU
External PSU