Explain how CRO is used for measurement of frequency & amplitude with suitable diagram
Voltage measurement/Amplitude:
The most direct voltage measurement that can be made with the help of oscilloscope is the peak to peak value.
The RMS value can be calculated from peak to peak value.
In order to measure the voltage from the CRT display, one must observe the vertical attenuator expressed in volts/div and the number of division of the beam. The peak to peak value is then computed as,