Radyne QAM256 Bedienungsanleitung Seite 32

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User Manual
Chapter 1. Overview
Page 1-16 P/N 2349-72712-01
1.5.5. System Events and Alarms
NMS-4000 features an event log that displays events and alarms related to the system.
When managing a site or several sites, any events and alarms sent from the system can be
easily viewed from one central place. Figure 1-15 shows the events and alarms in a system.
Figure 1-15: Event Log Window
1.5.6. Statistical Multiplexer Management
The CODICO
®
NMS-4000 has an optional Statistical Multiplexer mode which is operated in
conjunction with the CODICO
®
SM-3000 Statistical Multiplexer.
Statistical Multiplexing of Variable Bit Rate (VBR) encoders provides an efficient means of
optimizing the output quality and bit rates of a series of encoders handling continually
changing input streams, as with digital broadcast satellites.
By continuously monitoring the dynamic output quality of a series of encoders, the SM-3000
maximizes bandwidth usage and provides high quality video. This feature is provided by
applying a distribution algorithm, and modifying the available compression bit rate resources
allocation among the encoders.
The Statistical Multiplexer continuously performs the following:
Samples data from the encoder outputs
Performs calculations
Sends new settings to the encoders.
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