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Basic Operation
DSO5000 Series Digital Storage Oscilloscope User Manual 24
high-frequency transients.
Applying a window to the YT waveform changes the waveform so that the start and stop values
are close to each other, which reduces the discontinuities.
The Math FFT function has three FFT Window options. There is a trade-off between frequency
resolution and amplitude accuracy for each type of window. You shall determine which one to
choose according to the object you want to measure and the source signal characteristics.
Window Measurement Characteristics
Hanning Periodic Waveform
Better frequency, poorer amplitude accuracy than Flattop
Flattop Periodic Waveform
Better amplitude, poorer frequency accuracy than Hanning
Rectangular
Pulse or Transient
Waveform
Special-purpose window applicable to discontinuous
waveforms. This is actually the same as no windows.
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