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© National Instruments Corporation
with no (or very small) discontinuities, and, thus, reduced spectral leakage.
There are many different types of windows. The one you choose depends
on your application.
Figure 6-4 illustrates a window applied to a single waveform record. The
record contains about 1.25 cycles of the sine wave.
Figure 6-4. Window Applied to Waveform Record
Figure 6-5 illustrates two cycles of the windowed waveform, with the
discontinuity between records is no longer present.
Figure 6-5. Waveform Discontinuity After Windowing
Some of the windows available in NI-DSA are:
•
Uniform
•
Hanning
•
Blackman-Harris (standard, 4-term, and 7-term)
Window
Windowing
6-13
Chapter 6
Advanced Concepts
NI-DSA Software User Manual
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