Does anyone know how to make the vision alignment work on a Quad 4C? What I mean is make it work right, and reliably. I know how to define the component for inspection (lead pitch, lead count, dimensions, tolerances, etc.), and I know how to set light levels (primary, secondary) and adjust the videometer thresholds. But my results are FAR from satisfactory. I'm trying to do a TQFP32, a TQFP48, and a TQFP144, all with 0.5mm lead pitch. The TQFP144 works best, with "only" a 40% reject ratio. The TQFP32 always reports either invalid lead pitch, or lead pitch out of tolerance. The TQFP48 always reports alignment failed, with no clue as to what is wrong. Quite frankly, the image on the monitor from the alignment camera never looks very good at all. There are a lot of bright reflections coming from the leads, making it almost impossible to see any separation between some leads. Reducing the light intensity makes other leads almost disappear. Yes, I have done camera alignment. So far I have found the vision alignment pretty useless. Does anyone know how to make it work?
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