FFT display
Create a spectral analysis display that uses a Fast Fourier Transform (FFT) to measure the relative signal intensity as a function of frequency.
Note
Connect a supported sensor to make the display visible when building an experiment page.
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Axis Lock
Click to lock or unlock axis scaling.
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Measurement Selector
Click to change the displayed measurement or units.
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Axis
Click and drag to scale each axis individually.
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Plot Area
Click and drag to move the plot area.
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Legend
Select a run to analyze by clicking the run in the legend. Right-click the run symbol to change the run color and other data set properties.
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Scale to Fit Tool
Change the scale of a line graph to zoom in on a range of data or to view an entire run of data.
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Coordinates Tool
Use to determine the coordinates of a single data point. Use the delta tool to determine the difference between two points of data.
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Annotation Tool
Use the annotation tool to label a data point in a graph with a brief note.
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Normalize Data
Select to change the vertical scale to make 1 the maximum value.
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Change Sample Rate
Click these tools to increase or decrease the sample rate.
Tip
Set a sample rate that is approximately twice the frequency range displayed on the FFT.
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Properties
Change the visibility of data points, symbols, and lines connecting data points in a line graph.
Supported Sensors
You can use the FFT display with the following devices: