... with USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS ... sample rate500MSa/aEquivalent sample rate50GSa/sInput impedance1MΩ//13pFInput couplingDC, AC, GNDTriggerEdge, video, pulse, delayAcquisition modesAuto, normal, ... to 5V/divVertical resolution8bitMax. input voltage400V(DC+AC peak),5Vrms@50ΩAuto measurementsVpp, Vamp, Vrms ...