Panasonic PV500 User Manual page 156

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For the information of the following conditions, refer to the chapter of Gray Edge checker (page 110).
·
Inspection Condition - "Scan Method", "Edge Condition", "Detected Position"
·
Search Method
Deciding Differential Threshold
Decide a threshold value of differential in detecting area. Only the areas with differential value which is higher
than this threshold are subjected to detect.
The threshold can be set in two ways, common setting and Individual setting. The common setting sets the
same value for all Gray Edge cells and the Individual setting sets separate values. Use the Individual setting if
pins have different brightness or only some of pins are dark due to lighting condition.
1.
Select "Thresh.Adj.".
2.
Press the TRIG key to execute a test.
The detected edge differentials are displayed. Use them to set the threshold.
3.
To set threshold of Gray Edge cells individually, select "Yes" for "Set Individually".
Select "No" not to employ Set Individually.
4.
Select the threshold setting table.
5.
To employ the common setting, select the row of "Common" and enter a value.
To use the Individual setting, select Gray Edge cell number and enter a threshold.
6.
Press the TRIG key to execute a test.
Press the F1key to display the image and confirm that all parts are detected stably.
Setting Judgement Limits
Set a tolerance (maximum and minimum values) of the values of detected gaps. If the detected widths are
within the tolerance, the object will be judged as "OK", if it is out of it, the object will be judged as "NG". When all
widths are detected and judgements of them are "OK", judgement of the checker will be "OK".
1.
Select "Judgement Limits".
2.
Input the setting values for "Max. Judge, Pitch" and "Min. Judge. Pitch".
Even when using "Gap" as the execution mode, these items are displayed as "Max. Judge. Pitch" and "Min.
Judge. Pitch".
3.
After inputting is completed, press the CANCEL key.
154
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