[PCB_FORUM] Re: 15.2 differential pairs and spacing setup

Yes Diane that will do it, we have these constraints all of the time and 
it works very well.  The Router
will also do a very good job on them.

  Good luck

Paul Keefe





Dickoff, Diane J 
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01/24/2005 05:55 PM
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[PCB_FORUM] 15.2 differential pairs and spacing setup






I know this has been discussed before but I want to make sure I am doing 
this correctly.
 
I have a large number of differential pairs with different spacing within 
the diff pairs. But I also need different spacing between the sets of diff 
pairs.
 
For example
 
Diffa+ and Diffa- has 7 mil spacing 
Diffb+ and Diffb- has 6 mil spacing
Diffc+ and Diffc- has 8 mil spacing
 
Diffa(+/-) must have 20 mil spacing to Diffb(+/-) and 
It must have 26 mil spacing to Diffc(+/-) (for example)
 
So in the CM, I can put the 7,6,8 mil spacing for the diff pairs.
But do I still use the net_spacing_type for the 20 and 26 mil spacing?
 
Thanks, Diane

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