User Guide

Internal time steps in transient analyses
265
Internal time steps in transient
analyses
During analog analysis, PSpice maintains an internal time
step which is continuously adjusted to maintain accuracy
while not performing unnecessary steps. During periods
of inactivity, the internal time step is increased. During
active regions, it is decreased. The maximum internal step
size can be controlled by specifying it in the Step Ceiling
text box in the Transient dialog box. PSpice will never
exceed either the step ceiling value or two percent of the
total transient run time, whichever is less.
The internal time steps used may not correspond to the
time steps at which information has been requested to be
reported. The values at the print time steps are obtained
by second-order polynomial interpolation from values at
the internal steps.
Pspug.book Page 265 Wednesday, November 11, 1998 1:14 PM