The 1940s was the era of electronic oscilloscopes. The development of radar and television required good performance waveform observation tools. Tektronix successfully developed a synchronous oscilloscope with a bandwidth of 10MHz, which is the basis of modern oscilloscopes. The advent of semiconductors and electronic computers in the 1950s promoted the bandwidth of electronic oscilloscopes to 100MHz. In the 1960s, the United States, Japan, the United Kingdom, and France each had different contributions in the development of electronic oscilloscopes, including a 6 GHz sampling oscilloscope, a 4 GHz traveling wave oscilloscope, and a 1 GHz storage oscilloscope; portable, plug-in oscilloscopes became Series products. In the 1970s, the analog electronic oscilloscope reached its peak, and the line series was very complete. The multi-function plug-in oscilloscope with a bandwidth of 1 GHz marked the high level of science and technology at that time, adding a logic oscilloscope and a digital waveform recorder for testing digital circuits. Analog oscilloscopes have not made much progress since then, and they have begun to give way to digital oscilloscopes. The UK and France have even withdrawn from the oscilloscope market. The technology is leading the United States, and the mid- to low-end products are produced in Japan.
To increase the bandwidth of an analog oscilloscope, oscilloscope, vertical amplification, and horizontal scanning are required to fully advance. To improve the bandwidth of a digital oscilloscope, it is only necessary to improve the performance of the front-end A/D converter. There are no special requirements for the oscilloscope and the scanning circuit. Plus digital oscilloscopes take full advantage of memory, storage and processing, as well as multiple trigger and pre-trigger capabilities. In the 1980s, digital oscilloscopes sprang up, and the results were numerous. The analog oscilloscope gradually replaced the analog oscilloscope from the foreground to the background.
However, some features of analog oscilloscopes in the early stages of development are not available in digital oscilloscopes:
The operation is simple: all operations can be found on the panel, the waveform response is timely, and the digital oscilloscope often takes a long processing time.
High vertical resolution: continuous and infinite, digital oscilloscope resolution is generally only 8 to 10 bits.
Fast data updates: capture hundreds of thousands of waveforms per second, and digital oscilloscopes capture dozens of waveforms per second.
Real-time bandwidth and real-time display: The continuous waveform has the same bandwidth as the single-waveform. The bandwidth of the digital oscilloscope is closely related to the sampling rate. When the sampling rate is not high, interpolation calculation is needed, which is prone to confusing waveforms.
In short, analog oscilloscopes provide engineers with a visionary waveform that can be tested with confidence within the specified bandwidth. In the human facial features, the visual nerves of the eyes are very sensitive, and the waveform of the screen is instantly reflected to the brain to make judgments, and subtle changes can be perceived. Therefore, the simulation oscilloscope has just begun to be popular with users.
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