User`s guide

8 Model Analysis

• Bode

• Pole-Zer o Map

5 If you selected to plot s te p or impulse response, y ou can set the time span.

Select Options > Time span and enter a new time span in units of time

you speciﬁed for the model.

For a time span T, the resulting response is plotted from -T/4 to T.The

default time span is 10.

Click Apply and then Close.

6 If you selected to plot a Bode plot, you can set the frequency range.

The default frequency vector is 128 linearly distributed values, greater

than zero and less than or equal to the Nyquist frequency. To change the

range, s elect Options > Frequency range, and specify a new frequency

vector in units of rad per model time units.

Enter the frequency vector using any one of following methods:

• MATLA B expression, such as

[1:100]*pi/100 or logs pace (-3,-1,200).

Cannot contain variables in the MAT LAB workspace.

• Row vector of values, such as

[1:.1:100].

Click Apply and then Close.

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