... switch 3.w/A&B sweep function MCH Sweep Oscilloscope,os-3000A series, w/A&B sweep, dual channel. 40/60MHz frequencySpecifications ... GNDInput impedance1MΩ,approx.27pFPolarity selection(CH2 only)Horizontal deflectionA sweep time0.1μs/div to 0.5s/div, ... C,,DC-50kHzOthersCalibration waveformFrequency :1kHz±5%,voltagePower supply220V/110V±10%;50/60HzDimensions310(W)×150(H)×455(D)mmWeight10kg *Specifications ...