... coded switch 3.w/A&B sweep function MCH Sweep Oscilloscope,os-3000A series, w/A&B sweep, dual channel. 40/60MHz frequencySpecifications: ModelSpecificationsOS ... ,DC,GNDInput impedance1MΩ,approx.27pFPolarity selection(CH2 only)Horizontal deflectionA sweep time0.1μs/div to 0.5s/div,21 range ... 0.1μs/div to 1ms/divB sweep delay systemContinuous delay and triggered delayB sweep delay time0.1μs/div to 0 ...