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cathode-ray oscilloscope


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(CRO)

An instrument based on the cathode-ray tube that provides a visual image of electrical signals. The horizontal deflection is usually provided by an internal timebase, which causes the beam to sweep across the screen at a specified rate. The signal to be investigated is fed to the vertical deflection plates after amplification. Thus the beam traces a graph of the signal amplitude against time.

Subjects: Physics.


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