When performing a time analysis where lower frequencies are not simulated and need to
be estimated, different options are available to extrapolate the spectral component of the
simulation result to 0 Hz.
On the Time analysis tab, in the Add time domain results group, click the dialog launcher.
Figure 1. The Time analysis options dialog.
Note: The adaptive sampling technique provides more accurate low frequency
extrapolation than linear interpolation but can be less predictable.
dialog launcher.