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2. In visual inspection of solder joints, inspector A found 724 defects out of 10000 boards...
Ask Yout Teache of solder joints on printed circuit boards can be very subjective. Part of...
Ask Yout Teache of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the numerous types of solder defects (e.g. pad non- Human visual in wetting, knee visibility, voids) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 jolints, inspector A found 742 that were judged defective, inspector...
0r2 points Human visual wetting, knee visibility, volds) and even the degree to which a joint...
0r2 points Human visual wetting, knee visibility, volds) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 joints, inspector A found 742 that were judged defective, inspector B found 732 such joints, and 1351 of the joints were judged defective by at least one of the inspectors. Suppose that one of the 10,000 jolints is...
Current technology uses high-resolution X-rays and lasers for inspection of solder-joint defects on printed circuit boards....
Current technology uses high-resolution X-rays and lasers for inspection of solder-joint defects on printed circuit boards. A particular manufacturers of laser-based inspection equipment claims that its product can inspect on average at least 10 solder joints per second when the joints are spaced .1 inch apart. The equipment was tested by a potential buyer on 48 different PCBs. In each case, the equipment was operated for exactly 1 second. The results of the Mini-tab analysis on the number of solder-joints...
Ask Yout Teache of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the numerous types of solder defects (e.g. pad non- Human visual in wetting, knee visibility, voids) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 jolints, inspector A found 742 that were judged defective, inspector...
0r2 points Human visual wetting, knee visibility, volds) and even the degree to which a joint possesses one or more of these defects. Consequently, even highly trained inspectors can disagree on the disposition of a particular joint. In one batch of 10,000 joints, inspector A found 742 that were judged defective, inspector B found 732 such joints, and 1351 of the joints were judged defective by at least one of the inspectors. Suppose that one of the 10,000 jolints is...
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