The cathode ray osciloscope is basically an indicating device which can display in usable form, the actual voltage variations in an electrical quantity as compared to time. Some of the many desirable features are as follows: It displays instantly information that otherwise would require hours of experimentation; Waveforms can easily be photographed and retained for fututre reference; It usually has a negligible effect on the characteristics of a circuit under test; It has an extremely wide range of sensitivity; It is rugged, dependable and not easily damaged by overload or surges.
