Smart Gui - Algorithm Training Material_rev1.pdf - 第139页

Copyright © ViT rox All Rights Reserved . Lead Ringer - Default Pretest Page 1: Pad T oo Dark • Inspect Pad Region, If lifted lead, end of the pad will look darker Page 2: T oe Fillet Curvature T oo Low • Inspect Lead T …

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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Lead Ringer - Parameter Description

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1. Compare To

● This option enable user to setup the comparison option

● Comparison “between leads” or “against an absolute threshold”

● 3 options as follow:

➔ Other Leads: Each lead is compared to all the other leads of the same row. The lead that

get a score 0 is recognized as the "base" of the row. We look at the difference between

leads.

➔ Other Leads (Invert Check): The invert check will compare leads that are failing against a

good template build from previous inspected components and determine if it is similar to it or

not (the threshold used to do the comparison and determine if there is a switch needed is

the threshold from the concerned page). If no leads are failing, we do not perform the invert

check.

➔ Threshold: Each lead is compared to the absolute threshold given by the user (separately

from the other leads of the row).