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How do you calculate the amount of time the Spectrum Time indicator (the orange bar) represents?

Subject: Setup & Operation | Published: October 2026 | FAQ ID: KB-03960

Question: How do you calculate the amount of time the Spectrum Time indicator (the orange bar) represents?

Answer: Spectrum Time = Window Factor / Resolution Bandwidth

  • Window Factors:
 FFT WindowFactor
 Kaiser2.23
 Rectangular0.89
 Hamming1.30
 Hanning1.44
 Blackman-Harris1.90
 Flat-Top3.77

 

  • The Resolution Bandwidth can be found next to the RBW readout on the MDO4000 display.