Abstract
An oscilloscope is one of the most important electronic measuring instruments for alternating current (AC) voltages and currents. It is particularly important because it allows one to “take” an electronic picture of AC waveforms. The chapter explains the construction of an oscilloscope, along with the function and adjustment of an oscilloscope's controls. A scope consists of two major segments: the display system and the controlling circuits. For display systems in analog scopes, a cathode-ray tube (CRT) technology is employed. A CRT display system consists of three major parts: an electron gun, a deflection system, and a screen. The other portion of an oscilloscope is control circuit. They cause the CRT to emit electrons, regulate how many electrons make up the beam current, and control the direction of the beam of electrons. The controls can be divided into three major subgroups: the mainframe group, the vertical control group, and the horizontal control group. The chapter describes the functions of the controls of a scope. A scope can be used to measure and determine the amplitude, period, and frequency of AC waveforms.
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