3.7" usb digital oscilloscope *Digital oscilloscope *Bandwidth:20MHz Sample Rate ( Real time ):100MS/s USB oscilloscope replaceable Li-ion ... 1(DSO+Multimeter+Cymometer all CE approval Features- USB Oscilloscope -HDS1022M-N Handheld SeriesUSB oscilloscope, Multimeter and ... Vpp,Vavg,RMS,Frequency,Period,Vmax,Vmin,Vtop,Vbase,Width,Overshoot ,Preshoot,Risetime,Falltime,+Width,-Width,+Duty,-Duty, Delay ...