Appendix F: Miscellaneous

⇒

Discrete

frequencyConvolution

componentcomponent

⇒

Frequency component

Window function

Convolution component

included in real￿time

frequency

and discrete frequency

waveform

characteristic

component

Figure F￿7: Concept of Convolution

Figures F-8 through F-13 show the FFT window functions prepared for this instrument and their characteristics. Also, note that if you use a window function with taper processing, then carry out inverse Fourier transformation to make real-time data, that real-time data is tapered.

The window functions are effective for investigating the frequency components of the acquired waveform, but the waveform after the window function is applied differs from the original waveform.

AWG2021 User Manual

F￿19