Physics II Lab w answers_Part_11

Physics II Lab w answers_Part_11 - Appendix: Cathode Ray...

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33 Appendix: Cathode Ray Oscilloscope (CRO) A cathode ray oscilloscope (CRO) is a convenient and versatile instrument to display and measure analog electrical signals. The basic unit of a CRO is a cathode ray tube (CRT). The CRO displays the signal as a voltage variation versus time graph on the CRT screen. By properly interpreting the characteristics of the display the CRT can also be used to indicate current, time, frequency and phase difference. The basic subsystems of CRO are: 1. Display subsystem (CRT,) 2. Vertical deflection subsystem 3. Horizontal deflection subsystem 4. Power Supplies 5. Calibration circuits Fig.1 shows a schematic diagram block diagram of how the subsystems are interconnected to produce the observed signal. The Signal is sensed at its source by the oscilloscope probe. The signal voltage is then transmitted to the oscilloscope along a coaxial cable and fed to the vertical display subsystem. After suitable amplification, the input signal is applied to the vertical
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This note was uploaded on 11/26/2011 for the course PHY 2053 taught by Professor Lind during the Fall '09 term at FSU.

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Physics II Lab w answers_Part_11 - Appendix: Cathode Ray...

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