Mean and average voltages-- Oscilloscopes can calculate the average or mean of your signal, and it can also tell you the average of your signal's minimum and maximum voltage. At their core, oscilloscopes display a plot of voltage vs. time for one or more signals. Voltage is the amount of electric potential between the two points in a circuit. The oscilloscope is used to measure the electrical signal which is displayed on a graph of plots with voltage vs. time was known as a waveform. You need just to measure the voltage, rest values are obtained by calculation. When to Use an O-Scope . Most oscilloscopes only directly measure voltage, not current, however there are a couple of ways it is possible to measure current using a scope: Measure the voltage dropped across a shunt resistor – some power supply designs may have shunt resistors built into the design for feedback.

These are generally low-value resistors, … How to Measure Voltage with an Oscilloscope Oscilloscopes help you visualize your electrical signal. One technique is to measure the differential voltage drop across such a resistor.