[[File:b2MAN_Fig107.png|thumb|400px300px|B2The lower section of a test panel.Spice A/D Workshop]][[File:b2MAN_Fig108.png|thumb|400px|B2The Edit Plot List dialog.Spice A/D Workshop]][[File:b2MAN_Fig109.png|thumb|400px|B2An Op-Amp circuit with two voltage probes.Spice A/D Workshop]][[File:b2MAN_Fig110.png|thumb|400px|B2.Spice A/D WorkshopCartesian graph showing the input and output voltages of the Op-Amp circuit.]]
==Setting Up Circuit Observables==