What does “WARNING: Primitives found on Internal Planes\ mean ?
Protel accept that they are unable (yet hopefully) to provide full integrity checking of internal planes. Specifically the Protel software cannot check for: 1) Internal planes with isolated sections caused by free primitives on the plane layer 2) That all plane connections are made by a “sufficiently” large width of copper (no necks that are too narrow) 3) That plane blow-outs around multi-row components have not isolated a connection (or that nearby thermal reliefs are not interfering with each other and other connections). 4) other stuff probably The warning you got is Protel’s quick and dirty check telling you that you should do a careful manual check to ensure that your planes are OK. This warning only occurs when you have some non-automatic (pad blowout/thermal) on an internal plane layer.
