Changing the Representation Display

Changing the representation display consists of choosing a representation with an adequate scale for the order analysis.

To Change the Representation Display:

Prerequisites: A RPM profile must be associated with the current time-frequency representation.
Right-click the representation then choose:

  • Time/frequency display to show the time along the horizontal axis and the frequency values on the vertical axis.

  • Time/order display to show the harmonics regularly spaced out, which helps horizontal identification.

    Tip: Time/order display is useful for low frequencies.

The Representation display is modified.

  • Rpm/frequency display to show the linear variation in harmonics as a function of engine rotation speed.

  • Rpm/order display to show the engine rotation speed along the horizontal axis and the harmonic order on the vertical axis.

    Tip: Rpm/order display can be used to display variations in amplitude of an engine harmonic as the engine speed builds, for example.
    Note: Order export is only possible from Time/order or RPM/order representations.