Emc rectification plan and rectification process operation detailed

1. After getting the rectification opinion, you need to locate the EMC rectification plan in advance. If you don't have a good plan, you can blindly rectify the product like a headless fly, which will only increase the cost of rectification.

2, positioning means, for the small editor here feel that the main can be divided into two points. First: Intuitive judgment requires the judgment of the engineer's intuition and experience. Second: Compare the test and analyze the problem based on the data provided by the test instrument.

3, Determine the emc, the victim (interference source) interference path (disturbed path). In many cases, there are more than one interference path and source. Therefore, it is found that certain measures are taken to find that there is no improvement. Generally, do not change it back. Don't give up saying that it is not necessarily a step away from success. Only by finding these two points can we understand that the root causes can be solved fundamentally, and often only need to spend a small price to achieve the purpose of completely solving the problem, and achieve the effect of four or two.

The following ideas help you determine the source and path from some aspects. In addition, some solutions are provided. The solution is secondary. It is ok to understand the first two factors.

1. RE over-standard rectification process:

2. Wire and cable over-standard rectification process:

3. Signal cable rectification process:

4. Shield leakage correction process:

4, esd path analysis:

The above flow charts may be different for each person, and the most important ones should be accumulated more and more summed up to form their own rectification methods and ideas. If you haven't gotten the problem, follow the above process to sort through the ideas.

In addition, it is necessary to develop a good habit of recording. The meaning of the record is not recorded every time a change is made. The efficiency of the flow account is very low. It is necessary to record the key points. At least the improvement area must be recorded and attention should be taken. Finally, it will look very clear at the time of conclusion.

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