The Impedance Analyzer adds powerful impedance measurements to the Analog Discovery. It contains automatically switchable reference resistors and relays so that no external setup is required. Simply plug it in, select it in WaveForms - and it is suitable for capacitances (50 pF - 500 µF) and inductances (10 µH - 1000 mH) in the frequency range from 1 Hz to 15 MHz.