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Visual inspection is the visual comparison by a human of some attribute of the printed circuit assembly with specified standards that describe the acceptable range for that attribute. The inspector normally picks up the printed circuit assembly or places it under a microscope and carefully observes particular attributes, such as the condition or bend radius of component leads or the wetting of solder joints to a lead. Visual inspection always involves human judgment in comparing the attribute to its conditions of conformance to standards. asp.net upc-a UPC-A . NET Control - UPC-A barcode generator with free . NET ...
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NET UPC-A Generator Controls to generate GS1 UPC-A barcodes in VB. NET , C# applications. Download Free Trial Package | Developer Guide included ... General Inspection Issues As Fig. 53.1 indicates, visual inspection can occur after each of the several printed circuit assembly process steps. Visual inspection often has different purposes, depending on where in the assembly process it occurs. These purposes fall into the following major categories: Quick detection of an assembly process step that is not operating within its normal range Detection of process defects as specified by the customer or industry or internal standards Solder Joint Inspection Issues Visual inspection after the reflow and wave-soldering process steps can also be just a quick scan for obvious defects to detect a process condition outside of control limits. In this case, the operator visually inspects for solder bridges, large solder balls or solder splashes, lifted leads, and a asp.net upc-a UPC-A Barcode Generator for ASP . NET Web Application
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