产品核心能力：
Electrical rule check for PCB layout designers
OrCAD Sigrity ERC is an easy-to-use reference-aware trace impedance, coupling and reference check tool for advanced PCB layout signal quality checking. Three options are available:

• Check all nets
• Check selected nets • Check by net groups
  OrCAD Sigrity ERC produces the impedance and coupling overlay, where layout traces are color-coded with impedance and coupling coef cient values. The overlays clearly show increased impedance and coupling due to voids on reference planes, which would be practically impossible to identify on the board level with visual inspection.
  Comprehensive results tables

OrCAD Sigrity ERC also generate comprehensive results tables:

• Trace segment-by-segment results – Reference-aware impedance
  Reference-aware coupling
  Upper/lower layer reference
  Coplanar reference
• Net-level results
  Impedance summary – Coupling summary
  Length and delay
• R,L,andC
  Number of reference discontinuities – Number of no reference sections
  Number of vias

Board-level results

• Routing area
• Component placement area – Routing ef ciency