Fast Fourier Transform (FFT) in an Oscilloscope: Myth or Reality?
Today we'll discuss a mathematical function called the fast Fourier transform (FFT). It's used for spectral analysis of periodic signals. Using the FFT, we can essentially decompose a periodic signal into its harmonic components.
Digital Oscilloscopes ➤ https://masteram.com.ua/ru/catalogue/...
Signal Generators ➤ https://masteram.com.ua/ru/catalogue/...
All modern digital oscilloscopes are equipped with the FFT function. Today, we'll try to evaluate how well this function works.
Our test subject will be the Siglent SDS1102X oscilloscope. Using a signal generator (in our case, a Rigol DG2041A), we'll feed the oscilloscope a 1 V square wave with a frequency of 1 kHz and 1 MHz. Using the Fast Fourier Transform (FFT) function, we'll decompose the incoming signal into harmonics and, by summing them, attempt to reconstruct the original signal.
#oscilloscope #FFT #Masteram