At first enter the desired value of sampling time. Here default value is 1 sec for sampling time.
Click on 'Select Entry Method' dropdown button and select the available options to enter the values.
Fig.1. Select Entry Method dropdown button
For Pole - Zero entry: click on 'Add Poles' button to enter the pole values and click on 'Add Zeros' button to enter the zero values.
Click 'Add Pole' or/and 'Add Zero' buttons multiple times to enter multiple pole/zero values.
Fig.2. Add Poles and Add Zeros buttons
Fig.3. Entry of poles and zeros values
Click on 'Plot' button to get the Pole-Zero map of S plane and Z plane.
Plot can be downloaded by clicking on 'Download' button.
Click on 'Enter ζ , ωn Values' dropdown button.
Enter the values of damping ratio (ζ)and natural frequency (ωn).
Click on 'Run' button in the dropdown-menu to get the Pole Map of S plane and Z plane.
Plot can be downloaded by clicking on 'Download' button.
Fig.4. Enter ζ , ωn values
Click on 'Clear' button before every new simulation to clear the previous map.
Note: Do not click on 'Clear' button if you want to enter values of multiple poles and zeros.