Skip to content

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.

  1. Lock Axis Axis Lock

    Click to lock Unlock Axis or unlock Lock Axis axis scaling.

  2. Measurement Selector

    Click to change the displayed measurement or units.

  3. Axis

    Click and drag to scale each axis individually.

  4. Plot Area

    Click and drag to move the plot area.

  5. 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.

  6. 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.

  7. 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.

  8. Annotation Tool

    Use the annotation tool to label a data point in a graph with a brief note.

  9. Normalize Data

    Select to change the vertical scale to make 1 the maximum value.

  10. Change Sample Rate

    Click these tools to increase Increase sample rate or decrease Decrease sample rate the sample rate.

    Tip

    Set a sample rate that is approximately twice the frequency range displayed on the FFT.

  11. 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: