标题: 求助,在用system SI 提取S参数时出现以下错误 [打印本页] 作者: lwhzwlw 时间: 2015-10-8 09:23 标题: 求助,在用system SI 提取S参数时出现以下错误 各位好,; J, N; G, y8 q; z- m
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新人向各位请教一个问题, 在使用SYSTEM SI 的提取POWER SI中PCB的S参数时,出现错误如下: ( u& M) G- x6 b' g' `* p/ e0 @3 A T+ B
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****Signal Net Statistics for Net DDR_DQS3M***** / x. }# X, P4 B7 N7 p8 c6 C Total number of traces buried under pads : 2, d1 L; v* D2 l
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. 4 P- v: T( H% R( C****Summary : Signal Net Statistics for the Design***** , W+ B- \8 H t% {4 l Total number of small shapes : 0. Y0 @% u9 M) r- {% U) w3 M
Total number of large shapes : 0 $ }" Q5 r9 b$ }; \ Total number of traces buried under traces : 0' t& l- s: f/ y
Total number of traces buried under pads : 904 s0 s+ `2 y. n6 b' u. d
Total number of traces overlapping along length : 0 1 I" E% v8 y7 n8 g6 \7 {- O# |8 _" i Total number of traces aligned along length : 3 + W, H* Y+ ^: o Total number of traces with no reference : 0 & w0 A$ `8 n6 ~2 u$ v/ o: n + j' b6 R `$ M+ W3 J" s5 t/ Y! O/ ?* `$ I
请问 traces buried under pads和traces aligned along length 是什么意思啊?怎样才能消除错误?感激不尽!!!!!!!! " q/ o3 B n. J; q- J3 N, f! G% w% f5 `& A