DS-2040CA Digital Oscilloscope: 1.DC-40MHz,dual channel color display 2.1GS/s real sample,50GS/s equivalent 3.w/ ... 5V/divVertical resolution8bitMax. input voltage400V(DC+AC peak),5Vrms@50ΩAuto measurements Vpp, Vamp, Vrms, Vmin, Vtop,Vbase,Vbase,Vavg,Freq ... . MCH Digital Oscilloscope,DS-2040CA digital oscilloscope,40Mhz bandwidth,color display,dual channel