I am using a Keysight InfiniiVision MSOX3054T Scope having Bandwidth of 500MHz and Sampling rate of 5Gsa/s.
I am learning to use the FFT Option in the scope.
Below is the waveform I captured of my QSPI Clock signal (48MHz)
My questions :
I am learning to use the FFT Option in the scope.
Below is the waveform I captured of my QSPI Clock signal (48MHz)
My questions :
- What is the threshold and the excursion levels (marked in red) mean? How to play around this value?
- And how is the -4.97dBV calculated (again marked in red)? Can someone show the calculation for the -4.97dBV value?