How can the initial design of a concentrator avoid the need for later modifications?

Systematically integrating EMC design into the early stages of concentrator development is the fundamental way to avoid later rectification. Key early design points include: In the architecture phase, determining a reasonable grounding architecture, planning the PCB stack-up (ensuring a complete ground plane), and selecting a shielded chassis. During circuit design, reserving space for filtering and protection circuits for all external interfaces. PCB layout strictly adheres to zoning principles: separating high-voltage, low-voltage, digital, and analog circuits; short high-speed and clock lines with ground planes; and placing filtering components close to interfaces. When selecting components, prioritizing models with good EMC characteristics. Utilizing simulation tools to anticipate potential problems. Developing an "EMC Design Checklist" and checking each PCB version before finalization. Inviting EMC experts to participate in design reviews. Through proactive design, most EMC problems can be eliminated in their early stages, requiring only minor adjustments during later testing, significantly shortening the development cycle.