FFT without Spectral Leakage

NI High-Speed Digitizers Help (NI-SCOPE)

Edition Date: January 2017

Part Number: 370592AB-01

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NI-SCOPE (English | Japanese)

The following figure shows a sine wave sampled from an NI 5102 and its corresponding FFT amplitude spectrum in decibels. The time-domain waveform has an integer number of cycles (namely 10), so the assumption of periodicity does not create any discontinuities.

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