Black Box 3-Channel DVI Extender Installation And Operation Manual page 4

INTRODUCTION
Device confi guration is based on the serial RS232 interface.
Firmware upgrades are also handled via this connector.
The 3-Channel DVI Extender can be used not only in heavy-duty
industrial environments, but also in the media sector, the television and
entertainment industries, training and education centers and many other
application areas in the visualization business.
The 3-Channel DVI Extender transmission system consists of the
3-Channel DVI Extender TX transmitter unit and the 3-Channel DVI Extender RX
receiver unit.
Both devices are delivered as desktop versions.
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3-Channel DVI Extender - Installation and Operation Manual