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AWG2021 User Manual
3 Ć195
FFT Editor (Option 09)
On instruments with Option 09 installed, existing waveform files up to 16,000
waveform points with the extension .WFM can be edited in the frequency
domain. When the editor is started, Fast Fourier transformation occurs automati-
cally and the data is transformed into the frequency domain. When you leave the
editor, inverse fast Fourier transformation is carried out to convert the frequency
domain data into time domain data.
The window function for fast Fourier transform is selected when the editor is
started. Within the editor, filtering (high pass, low pass, band pass, band cut) and
clipping are possible.
This editor is not used to make new files. Rather, it edits existing waveform files
in the frequency domain. Here is the procedure for editing the FFT editor.
1. Press the EDIT button in the MENU column. The initial EDIT menu will
appear.
2. Select More from the side menu to display the third page of the side menu:
More 3 of 3.
3. Using the general purpose knob, select the waveform file (.WFM) from the
file list.
The Edit in Frequency Domain item is added to the side menu.
4. Select Edit in Frequency Domain from the side menu. The menu for
selecting the window function is displayed. See Figure 3 -141.
Entering the FFT Editor