Solid EXPRESS Single-Carrier DAS, Инструкция по установке и эксплуатации

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EXPRESS DAS
Installation and Operations Manual
6 EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
The DAS Management System (DMS-600) is a network management device that provides remote control
and monitoring of the DAS through a standard Internet connection.
Using a single strand of fiber, the EXPRESS ODU can feed an EXPRESS Optical Expansion Unit (OEU)
to extend the DAS from one building to others within the same campus. The OEU acts as a remote ODU
for that distant building, feeding signals to another set of remote components.
SISO (single-input and single-output) and MIMO (multiple-input and multiple output) are available in a
single unit. A MIMO configuration may be required to achieve increased communication performance –
most notably in data throughput.
2.3 SISO Configuration
The figure below shows a typical SISO installation that supports four frequency bands using two modules
in the BIU. The BIU CPU and BIU Power Supply occupy two of the expansion slots leaving three slots
empty.
In this SISO environment, the connected ODU sends and receives the signal through a single fiber strand
to and from the MRU/ARUs. From there the signal is passed forward and backward along coaxial cable to
the antenna array.
Figure 2.2 – EXPRESS DAS – SISO Configuration