Display | Hide Excitation
This option is used to visualize the excitation loads as vectors. Supported for the Modal Frequency Response, Direct Frequency Response, Coupled (Structural, Thermal and Electrical Analyse) and E-Motor Acoustic solutions with Optistruct solver.
When excitations are displayed as vectors, all frequencies available in the selected load case are listed in the result panel and vectors are displayed based on the chosen options in the panel like frequency, complex filter and scale type.
The frequencies and their respective orders are listed for Acoustic solutions, while for the remaining types, only the frequencies are listed.

Displayed vectors can be animated using the options in the animation toolbar.
Example:

Hide Excitations
This option is used to hide the excitation vectors.