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Advantages and Disadvantages of Using DSP Filtering on Oscilloscope Waveforms

6/2/2005 04:00 AM EDT
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re: Advantages and Disadvantages of Using DSP Filtering on Oscilloscope Waveforms
Enigma86d   6/24/2011 3:08:00 PM
Hello Mr. Johnnie, I read "Unfortunately, the oscilloscope's hardware adds unwanted phase shift to the higher-order components of high-speed signals that can ONLY be eliminated by either significantly increasing the instrument's bandwidth, or by correcting with phase-correction DSP filtering" under the "Phase-correction Filtering" paragraph. I researched and discovered that zero-phase filters can be made (topic: ZERO-PHASE FILTERING in "Understanding digital signal processing, second edition" written by Richard G. Lyons). I simulated it in Matlab and it seems to work fine. Would you have any regards about it? Thank you for your very well written article. Marius RUSU, student at University of Birmingham.

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