Frequency Analysis
The frequency analysis (FFT: Fast Fourier Transform) can be accessed after the data has been loaded in the Data Preparation step.
-
Click on the Frequency Analysis button on the main Troubleshooter toolbar to open the input selection dialog.
-
On the field selection dialog, select the desired fields and set the sampling rate.
-
Click on the Ok button
-
Each of the previously selected fields' frequency analysis is drawn. The units for the X-axis is megahertz and the Y-axis is amplitude.
Frequency Analysis Options
Scrolling axes:
-
To scroll axis click on the scroll axis button or select scroll axis form the right click popup menu.
-
Click and drag with the left mouse button on the axis to scroll.
Zooming axes:
-
To scroll axes click on the zoom axes button or select zoom axes form the right click popup menu.
-
Click and drag with the left mouse button on the axes to zoom.
Zoom in all axes:
-
Click on the zoom in all axes button to zoom in on all axes.
Zoom out all axes:
-
Click on the zoom out all axes button zoom in on all axes.
Zoom in box:
-
Click on the zoom in box button.
-
Click and drag a window over the area to zoom into.
Zoom to fit:
-
Click on the zoom to fit button to zoom to fit all axes.
Scroll to ruler position:
-
Click on the scroll to ruler position button to zoom to fit all axes.
Show ruler:
-
Click on the show ruler check box to toggle the ruler.
Share Axis:
-
Click on the share axis check box to toggle the sharing of axis between the different frequency analysis graphs.
Related topics: