In most cases, the Nyquist plot is applied to the LOOP GAIN for a circuit with feedback (check the stability properties for the closed-loop system).

Therefore my question: Do you want to perform a STABILITY analysis ?

In this case and if you want to plot a BODE diagram before, you must use the LOOP GAIN function rather than the closed-loop filter response.

Short answer: yes! One question however is what you want to do with this plot...

Dear Mr. Wangenheim,

Thank you for the information.

Dear Mr. Enzmann,

I am preparing a list of experiments in control systems using microcontrollers for Master degree students. Thank you.