[SI-LIST] Ground nodes in spice

I have a question regarding backplane simulations of serial 8b/10b
signals, running 2.5Gbs and above.  Does it matter whether the ground
nodes of the daughtercards and backplane are all set to 'zero' or to a
floating node for eye pattern results?
Thanks,

Fabrizio Zanella
Principal Hardware Design Engineer
Broadbus Technologies
fzanella@xxxxxxxxxxxx
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