1. After receiving the rectification opinion, it's essential to plan the EMC improvement strategy in advance. Without a clear plan, you might end up making random changes, like a fly without a head, which can lead to increased costs and wasted time. A well-structured plan helps you stay focused and efficient during the process.
2. The key to identifying the problem lies in two main approaches. First, use your engineering intuition and experience to make an initial judgment. Second, analyze the data from testing instruments to pinpoint the exact issue. Combining both methods gives you a more accurate understanding of what needs to be fixed.
3. Determine the source of interference (the emitter) and the path through which it affects the system (the disturbed path). In many cases, there may be multiple sources and paths. If a certain measure doesn't improve the situation, don't give up—try different solutions. Persistence is key. Once you identify these two elements, you can address the root cause effectively, often at a low cost and with long-lasting results.
The following ideas can help you identify the source and path from various perspectives. While specific solutions are important, understanding the first two factors—intuition and test data—is crucial for successful troubleshooting.
Second, EMC Rectification Process:1. RE (Radiated Emission) Over-Standard Rectification Process:
2. Wire and Cable Over-Standard Rectification Process:
3. Signal Cable Rectification Process:
4. Shield Leakage Correction Process:
5. ESD Path Analysis:
These flowcharts may vary depending on the person or situation. However, the most important thing is to accumulate experience over time and develop your own method of handling EMC issues. If you haven’t identified the problem yet, going through this process step by step can help clarify your thoughts.
Additionally, it’s important to develop a habit of recording your findings. This doesn’t mean you need to document every small change, as that can be inefficient. Instead, focus on recording key points, especially the areas where improvements were made. Keeping good records will help you review and understand the process clearly when you reach the conclusion.
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