Electronic Measurement

90GHz Oscilloscope Breakthrough: The Deep Significance of Technological Independence Behind Domestic High-End Instruments

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Recently, according to public reports, a research team in China has successfully developed a real-time oscilloscope with a bandwidth of 90GHz, achieving performance indicators that meet international advanced levels. This achievement breaks the decades-long technological monopoly of European and American companies in the field of high-end electronic measurement instruments and is seen as an important … Read more

China’s 90GHz Oscilloscope Breaks Barriers! A ‘Chinese Standard’ for Global Ultra-High-Speed Signals

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In the laboratory, the waveform on the silver device is steadily fluctuating, and Chinese engineers are clenching their fists—this moment rewrites the history of high-end electronic measurement instruments in China. On October 15, 2025, at the Bay Area Semiconductor Expo in Shenzhen, China’s self-developed 90GHz real-time oscilloscope was officially unveiled. This device has a bandwidth … Read more

The Evolution of the Multimeter

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The Evolution of the Multimeter

The first pointer meter used to detect current was called a galvanometer, invented in 1820. When used in conjunction with a Wheatstone Bridge, it can compare an unknown resistance and voltage to known voltages and resistances, thereby measuring related voltages, currents, and resistances. This method of measurement in the laboratory is time-consuming and labor-intensive, making … Read more

How to Read the Digits on a Digital Multimeter?

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How to Read the Digits on a Digital Multimeter?

In electronic measurements, the digital multimeter (DMM) is a favorite among many electronic engineers. Without a digital multimeter, projects cannot be completed. However, when first learning to use a digital multimeter, it is easy to misunderstand how to read its digits. Let’s learn how to read it! 1. Integer Digit Count Definition: The digits that … Read more