Inspection and testing of printed circuit boards

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Inspection can be in the state:• unmounted,• mounted.

Statistical methods can be applied for not inspecting every board.

• Visual inspection (broken line, shortcut),

• Optical tool (projector, microscope, CCD camera + computer),

• Electronic method.

Automated optical inspection

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Measurement points:• Soldered points,• Special measurements pads (SMT).

Electronic measurement methods:• Two-point,• Multi-point pad

connector.

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Four-point measurement equipment