Oversampling

NI High-Speed Digitizers Help (NI-SCOPE)

Edition Date: January 2017

Part Number: 370592AB-01

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Oversampling is sampling at a rate beyond twice the highest frequency component of interest in the signal. Because real-world signals are not perfectly filtered and often contain frequency components greater than the Nyquist frequency, oversampling can be used to increase the foldover frequency so that these unwanted components of the signal do not alias into the passband. Oversampling is also necessary when trying to capture fast edges, transients, and one-time events.

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