Smart Gui - Algorithm Training Material_rev1.pdf - 第109页

S-type Algorithm - Location Mode

108

1. Enable Pin Offset Checking

● Select the image plane that having best contrast between the component

and the background.

2. Pin Side Offset Threshold

● Unit in micron (um)

3. Pin Toe Offset Thres

● Unit in micron (um)

Pin Toe Offset Thres

Pass Fail

Pin Side Offset Thres

Pass Fail

Pin Toe

Pin Side

109

Component Body Inspection

S-type Algorithm - Body Mode

110

Presence Mode Description

Classic This is based on examining the grey level of a defined area of the component.

Colour MVC Its reliability is based upon board color and contrast to component color. The

classifier is based on inspecting 3 populated boards, and 3 bare boards. This

method is not ideal for small dark components, with low contrast to the board

color, like diodes. This cover in SLA training module.

PRMVC This is based on 3 populated boards, and 3 bare reflowed boards. This

requires extra CAD generation to create pads information. This cover in SLA

training module.

Voting This takes all of the classifiers into consideration. The algorithm then uses a

weighted score from each classifier and votes for presence/absence. This is a

classifier that is based on the shape profile of the component. This cover in

SLA training module.

In most cases, Classic is sufficient for

determining presence on s-types. If you

have a bare reflowed board available, you

can use the Voting classifier and train the

SLAs.