Selecting Orders Manually

This section explains how to select one order after another. These selections can then be processed.

To Select Orders Manually:

Prerequisites: You need a signal with an associated RPM profile.
  1. Right-click the signal and select Calculate time-frequency representation.
  2. Zoom in the representation to focus on the area of interest.
  3. In the toolbar, click Adjust window size .
  4. Click and drag the Adjust window size tool in the representation to surround the area of interest, where energetic harmonics are located.
  5. The best window size is applied to the time-frequency representation.
  6. In the toolbar, click Select harmonics .
  7. In the representation, move the Select Harmonics tool.
  8. If necessary, enter a value in the Current tool settings panel to specify the width in Hertz for the selection tool.
  9. You can verify the cursor position information in the left bottom corner of the main window.
    Note: T is the time in second. F is the frequency in Hertz. O is the order number. A is the amplitude in dB.
  10. Click the representation.

    The harmonic is manually selected.

    To select several orders (one order after another), click the representation again.

    Tip: If you need to deactivate the Select harmonics tool, press Esc.
    Tip: Once the order is selected, you can modify it.

The orders are selected.