Dakota Ultrasonics DFX-8 plus MANUAL1 - Manual (Page 125)

DFX-8 Series Ultrasonic Flaw Detectors
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Note: If the CAPTURE feature has been activated, pressing the FREEZE key a
second time will capture the screenshot, and display the File Edit Box
enabling the user to name the captured file. The screen shot will be
captured as a “tagged interface format” (.tif), which can be opened directly
with any graphics file viewer.