* Altium - Use Net Class Directives for Diff Pairs instead of Diff Pair Directives.
* Altium - Delete all Solid Polygons or use Hatched Polygons.
* Altium - Simplify the design rules, i.e. Clearance All 7mils and not InAnyDifferentialPair
* Altium - Simplify the design rules for trace width, i.e. 5mils
* Altium - Use only one drill size when exporting to Specctra
* Altium - Use only Thru-Hole and Blind Vias
* Altium - Copy the board outline to the Keepout layer to keep routes inside the borders.
* Altium - Export Specctra *.dsn file.
* Electra - Fanout GND Vias. Protect and then Unselect Net GND (Do Not Route GND)
* Electra - Run the Router and Export the the Routes.
* Altium - Import the Routes *.rte file.
* Altium - Run DRC Checks and Cleanup routes as needed.
* Altium - Clean up Diff Pairs using Find Similar and Retrace.
* Altium - Net Antennae Design Rule NOT ((ObjectKind = 'Via') And (Net = 'GND'))
Ensuring PCB Readiness for Specctra-compatible Routers in Altium Designer
Bugs and Tips:
https://forum.live.altium.com/#/posts/251575/797738
https://forum.live.altium.com/#/posts/254379/812665
Related Links: DFM (MakeDo)
That's it !
