... sample rate 3.2channle, color display 4.with USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS-2025CAChannels2 ... ,Vavg,Freq,Period,Rise timeFall time,+width,-width,overshoot,preshoot,+duty,-duty,etcMath+-×÷FFTStorage10waveforms,10 stepsFFTWindowHanning, hamming, Blackman-harris, rectangylarSample points1024pointsX- ...