The Zoom FFT is interesting because it blends complex down conversion, lowpass filtering, and sample rate change through decimation in a spectrum analysis application. The Zoom FFT method of spectrum ...

This allows users to increase the record length of the FFT, which improves the frequency-spectrum estimate. Longer record lengths also provide finer frequency resolution and better dynamic range.

For years, oscilloscopes have offered FFT functionality enabling the versatile scope to function as a basic spectrum analyzer. More recently, feature-rich spectrum-analyzer software (or, should we say ...

Last week, we discussed FFT functionality and VSA (vector-signal-analysis) software on a scope. Sometimes I hear this called spectrum analyzer software, but in fact, spectrum analyzer software turns ...

Spectral analysis with a scope FFT is limited compared to a spectrum analyzer. Manual cursors typically are required to identify the frequency and amplitude of peaks in the spectrum.

However, their spectrum analysis abilities are lacking. While these scopes do have a Fast Fourier Transform (FFT) function, it’s limited and nearly useless for RF.