My coworker is working on a board design where layer 7 of 10 is a mixed layer, it has tracks and several plane areas.
The total copper area for this layer, according to Hyperlynx, is 49%.
Layer 7 is properly defined as a signal layer in the CES stackup editor and in Plane Assignments. The check mark is also on to keep the layers in sync.
Does anyone know why Hyperlynx sees this as a plane layer?
Hyperlynx have be built with the intelligence and flexibility. You can change the layer type or adjust the preferences for plane type , the default is 40%.