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<p>Hi:</p>
<p>This is the first time i work with discrete time transfers functions and Scilab.</p>
<p>I want to use bode() for plotting the magnitud and phase response of the system, however, i don't understand how to set the frequencies to normalized values (-pi, pi).</p>
<p>This is what i'm doing:</p>
<p><br>
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<p></p>
<div>s=poly(0,'s')<br>
H=(s^(-2400))/(1-0.5*s^(-2400))<br>
S=syslin('d',H)<br>
bode(S)</div>
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<p><br>
</p>
<p>i get a warning that frequencies beyond nyquist rate are ignored and the resulting plot is attached.</p>
<p><img tabindex="0" aria-expanded="false" crossorigin="anonymous" id="img472992" style="max-width: 99.9%;" contenttype="image/png" size="0" src="cid:4845973f-0da4-4dd3-ade0-64a7e55422d3"><br>
</p>
<p>In the help, it says that bode parameter could include fmin and fmax in herz, but isn't a discrete system response limited to normalized frequencies? And to transform the normalized frecuency to herz the sample rate must be used, but i don't know how to
pass it to the system or something.</p>
<p><br>
</p>
<p>Any hints would be appreciated.</p>
<p>Thanks<br>
</p>
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