... CH1,CH2,ALT,CHOP,ADD mode 4.5mV-5V/div, 1mV-1V/div(X5) MCH Analog Oscilloscope,V-5040 40MHz oscilloscope ... controlAdjustableBasic functionModeCH1, CH2, superposition, alternation, intermittentVertical deflectionDeflection factor5mV/div to 10mV/div: 10 ranges, continuous adjustment according to 1-2- ... ratio to 1:2.5. (For 5 times. 1mV/div to 1V/div for 10 ranges)AccuracyNormal: +/-3% Amplification: +/-5% ...