0
\$\begingroup\$

We know both VBW and trace averaging intends to smooth the fluctuations of a spectrum.

But how do they differ from each other?

\$\endgroup\$
2
\$\begingroup\$

Without getting into DSP and filter theory:

Video bandwidth works by 'smoothing' based on frequency points at higher and lower frequencies within the same sweep - It limits how 'sharp' peaks can be.

Trace averaging works by averaging a frequency point with previous versions of the same frequency point from different sweeps. This means it doesn't care about the samples at other frequencies, but you need more than one sweep to be able to do it.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.