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Rapt bandwidth management – Extron Electronics VN-QUANTUM User Guide User Manual

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Section 3: Functional Overview

VN-QUANTUM User Guide

Page 70

I455GB issue 8

RAPT Bandwidth Management


In the unlikely event that the number of sources displayed on the target display exceeds the real-time
capacity of the RAPT bus, VN-QUANTUM implements a system of bandwidth management.

All sources are processed at the full temporal rate of the system. This is the rate at which the displays
run, either 50 or 60Hz.

The RAPT bandwidth usage is monitored dynamically. Whenever the number of sources viewed
causes the RAPT bandwidth to be exceeded, the source update rate is lowered to half the full
temporal rate. When the RAPT bandwidth usage reduces to a point below its maximum, the source
update is increased to its full rate.

Note that the display output continues to run at selected refresh rate (either 50 or 60Hz).