Issue link: https://resources.pcb.cadence.com/i/1532922
Each topology has its own benefits, depending on the application. 4. Once you have set the topology for that ECSet, you can apply it to the appropriate nets found in the spreadsheet under Electrical > Net > Routing > Wiring. 5. In this example, however, you can also directly apply a net schedule (see below). Note: Depending on your use case, you can use either constraint sets, or a specific rule application as needed, like in this example. However, please use constraint sets as often as possible to catch most cases first before applying net-specific one-off rules. Using constraint sets modularizes and streamlines your PCB design constraint process and makes you more efficient. The constraint set method also reduces the likelihood of errors and forgotten constraints. You can also import, and export constraint sets across your team so that everyone adheres to similar standards. The less you do unique constraint values that are outside (or override) the constraint sets, the fewer problems you will have. Benefit of a good Wiring Topology: Improves signal integrity and timing by ensuring critical connections are made efficiently. Stub Length (Max Stub Length) Stubs that lead off traces and pads can act as antennas. Those antennas are problematic for electromagnetic field compati- bility and electromagnetic interference (EMC and EMI). PCB trace stub on top view of PCB 38 www.cadence.com OrCAD X Constraint Management Guide