Matrox Orion Installation And Hardware Reference page 64

64 Appendix C: Glossary
Single-screen mode
A display configuration using a single monitor to display both
the Host operating system's user interface and images from
the Matrox Orion display memory.
Trigger
A signal that allows image acquisition to be synchronized to
external events. If supported, a digitizer can operate in one
of two modes upon receiving a trigger:
Asynchronous reset mode: If your digitizer supports and
uses this mode, the camera is reset to begin a new frame
when the trigger signal is received.
Next valid frame/field mode: If your digitizer supports and
uses this mode, the digitizer will grab the next valid frame
or field.
Vertical sync
The part of a video signal that indicates the end of a frame
and the start of a new one.
See also horizontal sync.