DS-2040CA Digital Oscilloscope: 1.DC-40MHz,dual channel color display 2.1GS/s real sample,50GS/s equivalent 3.w ... time,+width,-width,overshoot,preshoot,+duty,-duty,etcMath +-×÷FFTStorage 10waveforms,10 stepsFFTWindow Hanning, hamming, Blackman-harris, rectangylarSample points 1024pointsX-YBandwidth ... . MCH Digital Oscilloscope,DS-2040CA digital oscilloscope,40Mhz bandwidth,color display,dual channel