Smart Gui - Algorithm Training Material_rev1.pdf - 第138页

Copyright © ViT rox All Rights Reserved . Lead Ringer - T ypes of Ringer T ests 9. Green Box Bend Differs • This preset is a variant of Preset 3 - Shoulder Bend Differs but placement should be more consistent. • Anchor s…

Lead Ringer - Types of Ringer Tests

8. Toe Fillet Shape Differs

• Anchor set to (Lead Tip anchor)

• Image Plane: max(Angle 1, Angle 3)

• Software measure the mean intensity of the pixels contained within the ROI.compare each lead with its

neighbours (per row comparison), with invert check (invert the results if most of the leads of the row are defects).

• Inspection area: Lead Tip Area

• The solder shape varies if the lead is lifted and this is what we are looking for here. We are using a lead tip

anchor an not a pad anchor, in case the pad anchor found is not reliable enough to the diverse process

conditions.

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Lead Ringer - Types of Ringer Tests

9. Green Box Bend Differs

• This preset is a variant of Preset 3 - Shoulder Bend Differs but placement should be more consistent.

• Anchor set to (Green Box Inner Edge anchor)

• Image Plane: Angle 1

• Software measure the mean intensity of the pixels contained within the ROI.compare each lead with its

neighbours (per row comparison), with invert check (invert the results if most of the leads of the row are defects).

• Inspection area: Lead Tip Area

• If the lead is lifted (heavily) or bent, the lead will be visibly deformed: the shoulder will appear brighter in the

current region of interest.

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Lead Ringer - Default Pretest

Page 1: Pad Too Dark

• Inspect Pad Region, If lifted lead, end of the pad will look

darker

Page 2: Toe Fillet Curvature Too Low

• Inspect Lead Tip Region, If the lead is lifted, the solder shape

will not be the same

Page 3: Toe Fillet Shape Differs

• Inspect Lead Tip Region. The solder shape varies if the lead

is lifted

Page 4: Shoulder Bend Differs

• Inspect Shoulder Region. If the lead is lifted (heavily) or bent,

• The lead will be visibly deformed: the shoulder will appear

brighter in the current region of interest.)

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