User`s guide

5 Acqu iring Image Data
Specifying the Amount of Data to Log
Note W h ile you can specify any size acquisition, the number of frames
you can acquire is limited by the amount of memory you have available on
your system for image storage. A large acquisition can potentially fill all
available system memory. For large acquisitions, y ou might want to rem ove
frames from the buffer as they are logged. For more inform ation, see “Moving
MultipleFramesintotheWorkspace”onpage6-4.Tolearnhowtoemptythe
memory buffer, see “Freeing Memory” on page 5-37.
Specifyin
g a Noncontiguous Acquisition
Although FramesPerTrigger specifies the number of frames to acquire, these
frames do not have to be captured contig uously from the video stream. You
can specify that the toolbox skip a certain numbe r of frames between frames
it acquires. To do this, set the value of the
FrameGrabInterval property.
Note The FrameGrabInterv al property controls the interval a t which the
toolbox acquires frames from the video stream (measured in frames). This
property does not control the rate a t which frames are provided b y the device,
otherwise known as the frame rate.
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