... DS-2040CA Digital Oscilloscope: 1.DC-40MHz,dual channel color display 2.1GS/s real sample,50GS/s equivalent 3.w ... rate50GSa/sInput impedance 1MΩ//13pFInput coupling DC, AC, GNDTrigger Edge, video, pulse, delayAcquisition modesAuto, normal, singleTrigger sourcesCH1, CH2, Ext, ... manual Dimension 303(W)×145(H)×288(D)mmWeight 5kg Video link: http://v.youku.com/v_show/id_XNTAwNDE4Njg4.html*Specifications ...