... usb digital oscilloscope *Digital oscilloscope *Bandwidth:20MHz Sample Rate ( Real time ):100MS/s USB oscilloscope replaceable Li-ion battery back up ... PC Model Name HDS1022M-N Bandwidth 20MHz Sample Rate ( Real time ) 100MS/s Horizontal Scale(S/div) 5ns/div~100s ... DC gain accuracy ±3% Automatic Measurement Vpp,Vavg,RMS,Frequency,Period,Vmax,Vmin,Vtop,Vbase,Width,Overshoot ,Preshoot,Risetime,Falltime ...