oscilloscope
oscilloscope An item of electronic test equipment that can display a wide variety of waveforms of electric signals. It does this effectively by “plotting” the amplitude variations of the signal with time on a display device, normally a cathode-ray tube. The electron beam of the CRT is deflected horizontally so that the display is scanned linearly with respect to time. Vertical beam deflections, derived from the input signal, are then superimposed on the display, the horizontal and vertical deflections being synchronized by means of trigger circuits. Most oscilloscopes provide at least two input channels allowing waveforms from different sources to be compared. Some oscilloscopes provide two timebases, allowing selected portions of a waveform to be displayed at a higher frequency by inserting a defined delay in the orizontal scan. See also storage oscilloscope.
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oscilloscope
