CST – Computer Simulation Technology

Signal Integrity Rules

Net Integrity

  • Net Length
  • Net Coupling
  • Net Stub
  • Net between Reference Planes

Via Integrity

  • Unconnected Via Pads
  • Via Clearance Overlap
  • Via to Net Coupling
  • Via Stub

Before CST BOARDCHECK can analyze a design, it needs to know which nets and components are important to the user and which type designation to give each of those nets/components. Nets can be tagged as critical, power, or ground and can also be identified as single-ended or differential. Components fall into one of 4 categories: integrated circuit, capacitor, other passive, or I/O connector. To help speed up this process, CST BOARDCHECK has several auto-tagging assumptions that can be applied.

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