Matrox MXO2 PCIe Host Adapter - Manual (Page 60)

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Chapter 5, Connecting External Devices to Matrox MXO2 LE
MXO2 LE RS-422 serial connection
MXO2 LE’s RS-422 serial connector lets you use RS-422 device control with a
supported video editing application when capturing material and exporting your
sequence to tape. This serial connection supports any device that uses the RS-422
SMPTE time code protocol, such as a VTR or digital disk recorder. For
information on how to configure Matrox RS-422 device control settings in Adobe
Premiere Pro, see
“Setting up Matrox device control” on page 91 ..
RS-422 serial cable
RS-422 device
MXO2 LE
(side view)