Eddyfi Technologies TSC U41, User Manual, Page: 57 / 72

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Size
Once a defect indication has been found, it can be sized using this option from the Analysis
Ribbon.
Figure 4-22
Sizing
1.
The
Size
button brings up the defect information dialogue box.
2. You may need to move the defect dialogue box to one side so the Bx and Bz signals are
visible.
3.
The defect data is selected by left-click and mouse move across the Bz trace. This is
shown in green. The recommended place to start the selection is at a point just before
the Bz signal begins to deviate from the background value indicating the start of the
defect.
4.
The recommended place to end the selection is just after the Bz signal rejoins the
background at the end of the defect.
5.
If this is done correctly, the Bx background value (yellow horizontal line labelled “Bkgd”)
will be in approximately the right position. It can be manually adjusted by dragging the
yellow line with mouse (or finger on touchscreens) or for very fine adjustment using the
left/right arrow keys after selecting the Bx view.
6. The Bx minimum value (yellow horizontal line labelled “Min”) can also be adjusted by
dragging the yellow line with mouse (or finger on touchscreens) or for very fine
adjustment using the up/down arrow keys after selecting the Bx view .
7.
The Bz peak and trough can be adjusted by dragging the green vertical lines or for
further adjustment by pressing the button consisting of a red vertical line and arrows
pointing to the left and right.
8.
Enter the
Length Estimate
in the defect dialogue box.
9.
Check the Coating Thickness is correct.
10. Add the sized defect to the defect list, if it is satisfactory, or press Cancel to clear the
current sizing and start again.
11.
This defect can be edited by pressing the
Defects
tab. "Defect List Box", page 46 for
more detail.
12.
The length and depth summary is added to the information pane.