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The Reports of Copper’s Death May Be Exaggerated

About 150 years ago the first stable transatlantic cable was laid and messages were sent between Ireland and Newfound­land over copper. The data rate on this cable was not even 1 bit/sec, it was 0.1 bit/sec. Concerns over the cable reliabil­ity and the slow data rate led some to believe copper was doomed as a communication media for these long cables.


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The Ultimate Power Rail Noise Measurement

Do I really need to use a power rail probe to measure ripple and noise? Power rail probes are single ended, so does that mean I can only monitor one power rail at a time? Are there other, more affordable options available? In this blog post, Steve Sandler answers to these questions and more.


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Bench Top Methods for Troubleshooting ESD

Troubleshooting ESD is all about tracing the path of ESD current. In this installment of Practical EMC, Kenneth Wyatt illustrates how this can be done using the HP 457A current tracer probe, or a medium-sized H-field probe, and tracing the path using an oscilloscope. 


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How Interconnects Work: Bandwidth for Modeling and Measurements

Modeling and measurement of digital serial interconnects is usually done in the frequency domain. That means that the minimal and maximal frequencies (or bandwidth) should be defined even before the analysis or measurement begins. This post introduces a simple and practical way to identify the bandwidth with a numerical analysis of defects in a single bit (SBR) or single symbol response (SSR).


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