7.3 Demo Menu Commands
The Demo menu has one command–
Demo Control
. This command opens a dialog box that lets
the user change several operating functions of the FFT and BP demos. Figure 7-3 shows the
dialog box that accompanies the FFT demo. Select the Demo Control command for a demo which
has no dialogs, an error message that says “This demo does not require user input” will appear.
Click OK and continue with the demo.
Figure 7-4 FFT Demo Dialog
Table 7-1
FFT Demo Dialog Description
Dialog Field
Description
Source
Select the source for the FFT; the codec or a random number generator.
Domain
Splits the original DFT using one of the following methods:
DIT (Decimation in Time) or DIF (Decimation in Frequency)
Window
A filter to use on the Fourier transform.
Scaling
Scaling refers to how and how much data is captured while the FFT is running. Dynamic
Scaling is a snapshot of current FFT high and low (limits) (activity).
Cumulative Scaling shows FFT activity over time (limits) (activity).
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