Tektronix TDS5000B Series

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Hamming Window
This window is unique in that the time domain shape does not taper all the way to zero at the ends.
This makes it a good choice if you wanted to process the real and imaginary parts of the spectrum
off line and inverse transform it back to the time domain. Because the data does not taper to zero,
you could remove the effect of the window function from the result.