Oscilloscopes are used to observe the change of an electrical signal over time, such that voltage and time describe a shape which is continuously graphed against a calibrated scale. Band Width DC ~ 10MHz (3db). Y Deflection 10mV / div ~ 5V / div 1-2-5 step ±5%. Sweep Rate 200ms/ div-0.5us / div 1-2-3 step±5%. Trig Source Int., Ext. X Sensitivity 0.5V / div, ±5%,MAG 0.1V/div, ±10%. Trig Mode Int. ? 1div ,Ext. ?0.5Vp-p. Wave Rectangle. Amplitude 0.5V ±2%.