User`s guide

8 Model Analysis
Transient Response Plot Settings (Continued)
Action
Command
Change time span over which
the im pulse or step response is
calculated. For a scalar time
span T, the resulting response is
plotted from -T/4 to T.
Note To change the time span
of models you estimated using
correlation analysis models,
select Estimate > Correlation
models and reestimate the
model using a new time span.
• Select Options > Time span (time
units), and choo se a new time span
in units of time you specified for the
model.
• To enter your own time span,
select Options > Time span (time
units) > Other, and enter the total
response duration.
• To use the time span based on model
dynamics, type
[] or default.
The
default tim e span is computed
based on the model dynamics and
might be different for different
models. For nonlinear models, the
default time span is 10.
Toggle between line plot or stem
plot.
Tip Use a stem plot for
displayin g impulse respons e.
Select Style > Line plot or
Style > Stem plot.
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