DS-2040CA Digital Oscilloscope: 1.DC-40MHz,dual channel color display 2.1GS/s real sample,50GS/s equivalent 3.w/ ... , rectangylarSample points 1024pointsX-YBandwidth 40MHzPhase diff±3 degreesDisplay A/CA: mono/color,320×240 resolutionPower supply Worldwide 100-225 V/40VA ... . MCH Digital Oscilloscope,DS-2040CA digital oscilloscope,40Mhz bandwidth,color display,dual channel