Oscilloscopes

 EASA PART 66
Aircraft Maintenance Engineering
Module 7

Oscilloscopes:


The oscilloscope, or scope for short, is a device for drawing calibrated graphs of voltage vs time very quickly and conveniently. Such an instrument is obviously useful for the design and repair of circuits in which voltages and currents are changing with time. There are also many devices, called transducers, which convert some non-electrical quantity such as pressure, sound, light intensity, or position to a voltage. By using a transducer the scope can make a plot of the changes in almost any measurable quantity. This capability is widely used in science and technology.
 
The heart of the oscilloscope is a cathode ray tube or CRT. Looking at the face of the instrument, you are viewing the screen that the electron beam strikes. Electronic circuits in the scope apply voltages to one set of deflection plates to sweep the beam across the screen from left to right at a constant rate, thereby providing the time axis. Other circuits amplify or attenuate the input signal as needed, and apply voltages to the other set of deflection plates to move the beam vertically, providing the voltage axis. Controls are provided to select the time and voltage scales needed for any given situation.

Let's take this quiz and check how much do we know about oscilloscopes.


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  1. Mohammad HadiMarch 10, 2021 at 7:11 PM

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