无盘设计
1.因为过孔具有电容效应,无盘设计能最大限度保证阻抗连续性,从而减小反射与插损;
2.减缓走线压力,降低产品成本与风险;
SetupConstraintsModelSpacing Models勾选Hole to line
SetupUnused Pads Suppression
光绘钻孔层注明无盘设计:Non-functional pads on internal signal layers must beremoved.
输出光绘文件的时候勾选suppress unconnected pads。
菜单栏选择ManufactureArtwork勾选suppress unconnected pads