User's Manual

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6. Optical compensation can be made not only in ODU but also in ROU.
6.2 ROU Operation
The figure below shows the level of the system link of SMDR-NH124 (BIU-ODU-ROU). This
section describes ROU-related information. ROU receives various signals through optical
modules. The signals are filtered only for corresponding signal band from a corresponding RDU
module and amplified with a High Power Amplifier. Then, the multiplexer combines the signals
with others and sends them with an antenna.
6.2.1 ROU Operation
ROU is in one-body enclosure type. ROU is located at a remote closet in a building.
And it can be installed on a wall or into a rack.
Basically, one antenna is provided. To install a variety of antennas, you need such
devices as a divider and a coupler. ROU can work with a DC Feeder and an Optic
Cable Feeder. For power supply of ROU, a power supply in AC-DC and DC-DC type is
provided to let you select a power supply suitable for an application.
For upper level, ROU can be connected with ODU and OEU. It has AGC function for 5dBo of
optical cable loss.
The following show operational procedures after installation of ROU.
Checking the status of ROU's LED Indicator