CONNECTOR AND CABLE GROUNDING FOR EMI/EMC

摘要

1. Cable & Connector Grounding VERY IMPORTANT for EMC 1.1 Cables and Connectors Must Be Designed as a System 2. Cable Shield Grounding Recommendations 2.1 Use Single Point Grounds for Low Frequency Threats 2.2 Typically 60 Hz corrupting analog or audio circuits 2.3 Use Multi Point Grounds for High Frequency Threats 2.4 Typically power transients or ESD corrupting digital circuits 2.5 Typically RFI corrupting analog circuits 2.6 Watch our for "pigtails" with high frequencies 2.7 Use "Hybrid Grounds" for Low/High Frequency Threats 3. Provide Adequate Signal Returns in Cables/Connectors 4. Pay Attention to Cable/Connector Mechanical Issues 5. Trade Off Cable Shields and Filters as Appropriate.