The sampling of oscilloscope also includes the accuracy of sampling rate
Oscilloscope sampling also includes the accuracy of sampling rate, that is, the effective conversion number (ENOB), common oscilloscope A/D converter is 8 bits. However, in practical use, the number of conversion bits that are really useful cannot reach 8 bits. Some oscilloscopes even degrade to about 4 bits in high bandwidth. This means that it is impossible for the user to accurately measure the amplitude of the signal using these oscilloscopes.