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Formulas and Differntial Pairs

Question asked by gary.felsman on Dec 15, 2011
Latest reply on Feb 9, 2012 by gary.felsman

I was trying to us a Formula to Match Differential pairs Signals in a group.

 

I set a match Group Tolerance of 1200th

 

The tried to reference all the Differential Paris to the Clock for that Group.

 

So I entered the Formula to try and match each signal to the negative side of the Differential clock with a toleance of +850/-350th.

 

={\QPI1_CPU1_CPU0_P1P0_CLK_DN\}+850/-330th

 

When I go into Expedition and turn on the Tuning Meter. Expedition only sees the Match Group tolerance of 1200.

 

This method works when I want to match single ended signals to a Differential Pair net.

 

Any Suggestions on what to do?

 

EE7.9.2 Update 5

 

Sincerely,

 

Gary Felsman

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