Aktakom ADS2061 User Manual page 32

Hamming
Blackman
Fig.5-8, 5-9, 5-10, 5-11 show four kinds of window function referring to sine wave of
1KHz:
User Manual of Smart Digital Storage Oscilloscope
Use Hamming for measuring sine, periodic and
narrow band random noise. This window works on
transients or bursts where the signal levels before
and after the event are significantly different.
This is a very good window for measuring
amplitude accuracy but less so for resolving
frequencies.
Use Hamming for measuring sine, periodic and
narrow band random noise. This window works on
transients or bursts where the signal levels before
and after the event are significantly different.
This is the best window for measuring the
amplitude of frequencies but worst at resolving
frequencies.
Use Blackman-Harris for measuring predominantly
single frequency waveforms to look for higher
order harmonics.
Fig.5-8. Blackman window
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