WaveEasy can display the waveform or a segment in frequency domain. This is used to analyze the waveform frequency spectrum. The following is a screen capture of a waveform containing multiple frequencies using the following formula:: 4 * Sin(10 * x) + 3 * Sin(50 * x) + 3 * Sin(100 * x) +1 * Sin(200 * x) with 10 Ms/Sec sampling rate. The resultant frequency spectrum shows 4 frequencies (100KHz, 500KHz, 1MHz, 2MHz). The upper axis shows a scale in fraction of the sampling rate (0.05 of 10M s/Sec which is 500KHz). You can also use the zoom tool to further view the spectrum in more details.
Frequency Spectrum Tab