Panasonic PV500 User Manual page 162

Setting Edge 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 pins 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 pins individually, select "Yes" for "Set Individually".
Select "No" not to employ Individual Setting.
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 pin number
(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 pins are detected stably.
Setting Judgement Limits
Set a tolerance (maximum and minimum values) of the pitch values of detected pins. If the detected pitches are
within the tolerance, the object will be judged as "OK", if it is out of it, the object is judged as "NG". When
judgements of all pitches 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".
3.
After inputting is completed, press the CANCEL key.
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