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This is a tutorial and demonstration of the basics of the Resolution BW (RBW) and Video BW (VBW) functions in a Spectrum Analyzer. You may wish to review the "Basics of a Spectrum Analyzer" video if you are unfamiliar with the basic functions and block diagram of a swept spectrum analyzer. Here is the link for that video:
• #22: Spectrum Analyzer...
This video covers the definition of these terms, where they exist in the analyzer, what they do, and the effects they have on the displayed results.