... and Cymometer, 3 in 1Support USB for data transmission to PC Model Name HDS1022M-N Bandwidth 20MHz Sample Rate ... factor 1X,10X,100X,1000X Input coupling DC, AC, GND DC accuracy(Average) Average>16:±(5% ... ) Max. Input Voltage 400V (PK-PK) (DC + AC PK-PK, 1MΩ input impedance, Probe attenuation 10:1) ... ±3 degrees Communication interface USB Power supply 100V-240V AC, 50/60Hz Li-ion battery 7.4V, 6 ...