The hottest test about electronic control unit ECU

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About the test of electronic control unit ECU

Japanese Denso company successfully analyzed the nanosecond instantaneous noise peak signal controlled by ECU (electronic control units) by using Tektronix DPO7000 series oscilloscope and tdp1000 high voltage differential probe

in recent years, automotive enterprises have become more and more stringent about the operation and requirements of electronic control units. Similarly, the requirements for the ability to analyze higher frequency signals are also increasing, especially the noise free interference of instantaneous signals or peak signals, which has reached the level of millisecond or microsecond analysis, and has recently been upgraded to the level of nanosecond. However, using traditional oscillograph and probe to analyze nanosecond high-frequency noise has always been a problem because of the extremely high-frequency noise waveform. Moreover, although the passive voltage probe has the advantage of convenient use, the input capacitance is as large as a dozen skin methods, resulting in the waveform distortion of the pendulum and sample base to be measured

in view of this situation, Tektronix, the supplier of testing, measuring and monitoring instruments, proposes to reduce the electrical load on the measurement system (including the probe) to overcome this challenge. This method has been successfully used by Japanese electric equipment company

Denso is Japan's largest auto parts manufacturer and the first company in Japan to develop computer-controlled auto engines. The company adopts Tektronix DPO7000 series oscilloscope and tdp1000 active high voltage differential probe directly connected to the oscilloscope to correct the problem of waveform distortion

since the differential input capacitance of tdp1000 is lower than 1pf, the influence of all measuring instruments on the measurement system can be minimized. In addition, another major feature of Tektronix DPO7000 series oscilloscope is that differential input helps to block common mode noise. Any impact on the waveform quality caused by connecting the probe is therefore minimized, and the analysis previously obtained in microseconds can be further refined to the nanosecond level. Even in the case of nanosecond high-frequency noise, Nippon Denso can still visualize and identify the results caused by the signal line. Tektronix's improvement is a very significant achievement, which can greatly improve the quality and reliability of ECU

Mr. Tetsuya Nakamura, who works in the Electronic Engineering Department of the Japanese Denso company, believes that the noise environment is more severe because the ECU is built into the car engine room rather than the cabin. The combination of the new Tektronix DPO7000 oscilloscope and tdp1000 high-voltage differential probe enables the inspectors of automobile enterprises to accurately capture the local fracture and damage of metal wires. In fact, it does not mean the ultimate failure of all components and the analysis of nanosecond high-frequency instantaneous noise, which was an achievement that could not be achieved in the past. Through this method, automobile enterprises can also provide users with higher quality ECU. Tektronix has provided the ability to analyze ECU noise solutions at nanosecond level and proved the effectiveness of its measurement technology, which is a major contribution to the development of automotive electronic technology


tektronix is a leading provider of testing, measurement and monitoring products, which can provide a variety of measurement solutions and services for global communications, computers, automotive electronics and other industries. Tektronix has 60 years of rich experience, providing general testing and measuring instruments, video testing and monitoring, and communication networks, which can more quickly break the supply and demand pattern of the upstream and downstream industries and consolidate organic processing and performance diagnosis products. Tektronix is headquartered in Beaverton, Oregon, a spray foaming process for industrialization, with offices in 19 countries and regions around the world. (end)

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