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Buffer Mode "Next" and "Every" in IMAQdx Extract Image (Labview NXG)

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Hi everyone,

 

I have some issues in understanding the difference between the "Next" and "Every" buffer mode in IMAQdx ( LabView NXG).

The default value is "Next": Default value is Next, which specifies that the driver waits for the next acquired buffer.

Then there is "Last": Last specifies that the driver does not wait for the next buffer but instead returns the last acquired buffer.

 

So far, so good, but then there is "Every": Every returns all sequential images in memory.

Where is the difference between "Every" and "Next"?

In my application I have a "One Shot" Acquisition of a certain amount of images and I want to save all of them without loss of frames in high speed (20 kHZ).
When measuring the loop time of the "Extract Image" function, Buffer mode "Every" produces faster results.

Probably an easy question but I didn´t find anything online that answered my questions.

Thank you very much!
Christoph


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