![]() ![]() This option also checks the surface area for the thermal (not just the spokes) against any void areas that encroach into the thermal. A thermal can become 'starved' when the surface area of the copper spokes connecting it to the plane is reduced by void areas. Thermals are connections to a plane with thermal relief 'cutouts' around them to reduce heat conductivity to the plane copper. Report Starved Thermals with less than n% available copper – enable this option to have the batch rule checking process look for and report 'starved' thermal connections larger than the specified percentage.To check for dead copper, the Un-Routed Net rule (in the Electrical category) must be enabled for Batch DRC. The voids around the pins join to completely cut through the plane copper, effectively breaking it into two parts. An example of where this may occur is a connector placed across a split plane but not connected to it. Broken planes occur when an area of a plane that has connectivity to a net becomes electrically disconnected from the rest of the plane. Report Broken Planes – enable this option to have the batch rule checking process look for and report broken planes.Limiting the number of violations that are reported is a key strategy in keeping the checking process manageable. Stop when n violations found – use this field to determine the maximum number of violations that can be detected before the batch DRC process is stopped (default = 500).An invalid multi-layer pad is one whose hole size is zero that would otherwise make it an SMT pad. Report Multilayer Pads with 0 size Hole – enable this option to include any invalid multi-layer pads found in the design.To check for vias under SMD pads, the Vias Under SMD rule (in the High Speed category) must be added to the design and enabled for Batch DRC. This option is only for detecting SMT pads with holes defined in them, which was possible in legacy versions of the software. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |