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Search Method
Configure the settings for the following search methods. Refer to page 131 for the principle of flaw detection.
Item
Option
Inspection Mode
Dif.
Gray Range
Num. Of Cells for
2 - 256
Calc. Range
Number of cells
1 - 253
per shift
Threshold
1 - 255
Detect Size
2 - 256
Adjusting the threshold
This feature is effective if you do not know how much you should adjust the threshold to detect the desired flaw.
With this feature, you can check the number of flaws to be detected after adjusting the threshold. After that, you
can set the adjusted threshold as inspection condition.
1.
Select "Thresh.Adj.".
After the message "Please wait a moment." appears, the number of flaws to be detected for each threshold
is displayed. The eight flaws are displayed in the descending order of threshold. If you want to view the
next eight flaws, press the right or left arrow key. If you want to view the flaws after the 9th, press the up or
down key.
The current setting value for threshold is displayed out of the table.
2.
Move the cursor to the column in which threshold numbers appear and check the number and
positions of flaws that are detected according to the selected threshold.
The flaw detected according to the threshold is displayed in pink.
3.
Select the desired threshold number and press the ENTER key.
The current threshold in the table is changed.
The threshold that has been set as an inspection condition is also changed.
138
Description
To select an inspection method
To set the number of cells to be grouped
(Available only if the inspection mode is set to "Gray Range" mode)
To set how much the grouped cells are shifted
(Available only if the inspection mode is set to "Gray Range" mode)
To set a lower limit of variation in brightness in order to extract the cells in a
candidate flaw. The PV310 extracts the cells more than the setting value for
Threshold as the cells making up a candidate flaw.
To set a flaw size in cell unit
Set the minimum number of the cells in a candidate flaw. The PV310 regards
a candidate flaw consisting of the cells more than the minimum number of
cells you have set here as a flaw.
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