Oscilloscopes Are Classified According To Different Signals

The analog oscilloscope uses an analog circuit (oscilloscope tube, which is based on an electron gun). The electron gun emits electrons to the screen, which are focused to form an electron beam and hit the screen. The inner surface of the screen is coated with fluorescent material, so that the points hit by the electron beam emit light.
The digital oscilloscope is a high-performance oscilloscope produced through a series of technologies such as data acquisition, A/D conversion, and software programming. The working mode of a digital oscilloscope is to convert the measured voltage into digital information through an analog converter (ADC). A digital oscilloscope captures a series of sample values of a waveform and stores them until it determines whether the accumulated sample values can depict the waveform. Subsequently, the digital oscilloscope reconstructs the waveform. Digital oscilloscopes can be divided into digital storage oscilloscopes (DSOs), digital fluorescence oscilloscopes (DPOs), and sampling oscilloscopes.
In order to improve the bandwidth of analog oscilloscopes, it is necessary to comprehensively promote oscilloscope tubes, vertical amplification, and horizontal scanning. To improve the bandwidth of a digital oscilloscope, it is only necessary to improve the performance of the front-end A/D converter, and there are no special requirements for the oscilloscope tube and scanning circuit. In addition, digital oscilloscope tubes can fully utilize memory, storage, and processing, as well as various triggering and advanced triggering capabilities. In the 1980s, digital oscilloscopes emerged with numerous achievements, and there was a great potential to replace analog oscilloscopes comprehensively. Analog oscilloscopes did indeed retreat from the foreground to the background.