Scientific Atlanta Continuum DVP eXtra Dense QAM Array, Системное руководство

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Continuum DVP eXtra Dense QAM Array System
Introduction
The Continuum DVP™ eXtra Dense QAM Array (XDQA) system is a compact QAM
array designed for QAM modulation and RF up-conversion of video streams in
Video On Demand (VOD) solutions.
The ITU-B version XDQA system supports a maximum output bitrate of 514.5 Mbps
encoded (12 x 5.361 Mbaud/256 QAM) of which 466 Mbps useful and the DVB
version supports a maximum output bitrate of 660 Mbps (615 Mbps useful). Each of
the six RF output ports provides two adjacent RF output channels.
The compact modular design allows you to customize your VOD application for up
to 188 VOD streams (3 Mbps, 8Mhz, 256 QAM) according to your specific needs.
The following illustration shows the Continuum DVP XDQA system.
Continuum DVP
eXtra Dense QAM Array
Alarm
Main
Backup
For redundancy reason, the Continuum DVP XDQA can be equipped with two
power supply units. This features automatic backup switching without service
interruption.
The Continuum DVP XDQA supports GbE loop-through. By cascading of two
devices 24 QAM channels are fitted in 2 RU, which fill a full GbE.
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1-2 Describing the Continuum DVP eXtra Dense QAM Array 4004949 Rev C