GE Everest XLG3 VideoProbe, Руководство по эксплуатации

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114 Chapter 7 Measuring Features and Defects GE Inspection Technologies XLG3 VideoProbe System
Help: I’m Getting Inaccurate Stereo Measurements
Avoid placing cursors in areas of significant glare. If necessary, adjust the brightness or
reposition the probe tip to enhance details and reduce glare.
Verify that the object to be measured is near the center of the screen.
Verify that the matching cursor is correct within 1 pixel. If you cannot clearly see where the
match point should be, select a different point, or capture the image from a different angle
that better reveals details to allow better matching.
Activate the zoom window to most accurately place the measurement cursors.
Try shadow measurement instead if there is little detail in the measurement area, or if you
need to measure along smooth, straight lines.
Review guidelines under “To Position the Probe Tip for a Stereo Measurement Image” on
page 98.
Help: I’m Getting Inaccurate Shadow Measurements
Verify that the surface is perpendicular to the probe view for all but skew measurements.
Verify that the shadow is properly oriented, the vertical dashed line (if any) is centered,
and the cursors are properly placed.
Review guidelines under “To Position the Probe Tip for a Shadow Measurement Image” on
page 105.