TA375

The integrated FFT spectrum analyzer provides detailed frequency domain analysis, ideal for identifying noise, crosstalk and signal distortion. The spectrum analyzer in PicoScope is of the Fast Fourier Transform (FFT) type which, unlike a traditional swept spectrum analyzer, can display the spectrum of a single, non-repeating waveform. With up to a million points and comprehensive measurement tools, PicoScope's spectrum analysis capabilities are second to none.

With a click of a button, you can display a spectrum plot of the active channels, with a maximum frequency up to the bandwidth of your scope. To focus on a specific frequency range you can directly set the start and stop values of the analyzer frequency axis.

You can display multiple spectrum views alongside oscilloscope views of the same data. A comprehensive set of automatic frequency-domain measurements can be added to the display, including THD, THD+N, SNR, SINAD and IMD. You can even use the AWG and spectrum mode together to perform swept scalar network analysis.

The spectrum works with the waveform buffer so you can capture and rewind through thousands of spectrum plots. Or, save time by using mask limit tests to scan through them all automatically. Spectrum masks and measurements also work with PicoScope actions just like in the time domain, so you can leave the spectrum running continuously and choose to save the waveform on a mask failure, or trigger an alarm when the harmonics are too high.

A full range of settings gives you control over the number of spectrum bands (FFT bins), scaling (including log/log) and display modes (instantaneous, average, or peak-hold). A selection of window functions allows you to optimize for selectivity, accuracy or dynamic range.

Read more about FFTs in PicoScope.