... -Y mode,imported coded switch 3.w/A&B sweep function MCH Sweep Oscilloscope,os-3000A series, w/A&B sweep, dual channel. 40 ... 5s/div,21 range in 1-2-5 sequenceDisplay modeA,A INT,B,B TRIG’DHold off timeContinuous variable ≥twice sweep ... 50kHzOthersCalibration waveformFrequency :1kHz±5%,voltagePower supply220V/110V±10%;50/60HzDimensions310(W)×150(H)×455(D)mmWeight10kg *Specifications are subject to change ...