Analog Converter
Knowing How Analog and Digital Oscilloscope Work
To know more about how an oscilloscope works, you have to understand how it detects and shows a signal. The analog type is different from the digital one. The analog type of oscilloscope is much simpler than digital oscilloscope. We will talk about the analog type and then the digital type.
The voltage signal of an analog oscilloscope runs to the vertical system. The vertical system is used to control the amplitude of a signal. The increasing of a signal voltage is depending on how the vertical scale is set. The signal then transferred to the cathode ray tube. When an electron hits the phosphor inside cathode ray tube, it creates glowing dot that is moved by voltage which is applied to deflection plates. The signal sent also goes to the trigger system. It causes the horizontal time base to move the dot on the screen. It moves from left to right in specific interval. The frequent speeds results in the glowing dot to form a solid line. The sweeping action and the vertical deflection action make the dot to move on the screen. The trigger stabilizes the signal to make sure that the sweep starts at the same point. This activity results in display of the signal analyzed by the oscilloscope.
Digital oscilloscope has some differences and similarities from analog oscilloscope. Digital oscilloscope has data processing system. When this tool is attached to a circuit, the vertical system will adjust the signal's amplitude. The analog to digital converter then send the signal to discrete points. It converts the voltage to digital values. The horizontal system then translates how often the analog to digital converter takes specimen. Analog to digital converter stores sample points in memory in waveform points. The waveform points form a waveform record. The points stored in memory and then displayed by the system.
About the Author
If you want to get an oscilloscope, you might want to check out dual trace oscilloscope. You can always find some informations about new oscilloscope.
The Whiffletree: A mechanical digital-to-analog converter
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