EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 74)

Setting up and Using the Optical Sampling Oscilloscope
66 PSO-100
Displaying the FFT Spectrum of a Sampled Signal
Displaying the FFT Spectrum of a Sampled
Signal
Your Optical Sampling Oscilloscope can be used as an FFT spectrum
viewer as well.
To look at the spectral content of a signal is useful in many situations. For
example, you might want to see the bandwidth of the signal, or look at
specific frequency harmonics that you want to maximize or minimize.
You can choose between two spectrum types:
³
Batch: The FFT of each batch is taken separately.
³
Averaged: Several batches are taken together to accumulate an
averaged FFT.
To display an FFT spectrum:
1. From the main window, select the Display menu, then Spectrum
(FFT).
2. Select which type of spectrum to view.