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Ground reference issues

Question asked by presario on Nov 15, 2006
Latest reply on Nov 20, 2006 by ALEPEREZ

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I have a multilayer PCB tackup in momentum and I have two ports on my top most substrate. If I try to reference these ports to ground, it gives me an error that says 'Ground reference ports must be associated to an internal port or to a single port with same reference plane'What does this mean?
How can I succesfully reference these two ports to ground?

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ALEPEREZ Nov 20, 2006 7:07 PM
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Ground reference ports are defined on finite strip metal and associated with a single or internal port that is electrically close. You normally do not need to do this since most models contain an infinite ground plane which automatically defines the return path for internal and single ports.
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