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Several substrates to ground

Question asked by presario on Nov 14, 2006
Latest reply on Nov 20, 2006 by ALEPEREZ
I have a PCB stack up with 3 layers with all three having different substrates. They are sandwhiched beween four layers of copper, and I need to ground the bottom three layers of copper. When I create/modify the substrate in Momentum, on the metallization tab,I have set up my three substrates. I set up three vias through 'hole'. Is this correct? How am I to connect these via's to ground? are they all to be mapped via hole?

Thanks in advance