Jit Lim

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A window into the frequency domain, part 2

From guest blogger Gina Bonini: In my last post, I reviewed windowing factors used during scope FFTs—why they’re needed, and how to select the right one. In this post, I’ll continue down the path of reviewing key tidbits about the scope FFT function, an often confusing and somewhat mysterious topic. One of the biggest concerns when performing an FFT is aliasing.... More

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A window into the frequency domain

From guest blogger Gina Bonini: For a recent project, I had to blow the dust off the front cover of my Discrete Fourier Transform (DFT) book from college. I actually have a few DFT books, acquired throughout my career from a variety of sources. Each one of these books is relatively thin but packed with equations and higher-order math, which makes cracking the cover and trying to... More

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A night at the circus

From guest blogger Gina Bonini: I spent my Saturday night at the circus–Cirque Du Soleil, to be exact. I’ll admit it; I’m a big circus fan. To watch human performers do death-defying stunts, and push their bodies to a level beyond what mere mortals can do, is entertaining and inspiring. Cirque Du Soleil is unique in that it is also a major theater production with music... More

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Probing: It's not always about bandwidth

From guest blogger Randy White: Choosing a scope probe or understanding how to use one may not be as straightforward as you might think. For example, the Tektronix P2220 is one of the most common passive voltage probes, yet there are many factors to consider. The data-sheet spec section for this probe states, “200 MHz bandwidth, 10x/1x attenuation, 17 pF input C, and includes a 6 inch... More

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Living the pipe dream at Design West

From guest blogger Randy White: Remember that animated video of the pipes and balls with synchronized music? The video is called “Pipe Dream” and was made about 11 years ago. Below is a screen shot from the video in case you’re not familiar with it. Last week at the 2012 Design West show in San Jose, attendees were treated to a “live” version of... More