Differential Pair -Allegro Constraint managment

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prapan

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Hi ,
I have a GB Ethernet connector to which I have to connect 4 pairs of differential pairs .Now I want to match the length of all the pairs (and individual nets) to same length .how do I set the constraint and Also how do I apply the trace tuning.
I am new to allegro tool ...
Thanks for the help in advance
Prapz

Am using 16.3 version
 
Last edited:

i use 16.3 too.but my english is very poor.

---------- Post added at 09:58 ---------- Previous post was at 09:38 ----------

differential pair is easy.
first;open the constraint manager>>>then open physical>> all layers>> then look for default
that is a differential pair menu in the default.
two;open the constraint manager>>>then open the electrical>>find the net>>then open routing>>>find the differential pair>>find the differential pair net,selcet the two net,click mouse right create differential.

---------- Post added at 10:00 ---------- Previous post was at 09:58 ----------

the first is default

---------- Post added at 10:02 ---------- Previous post was at 10:00 ----------

Can not set the first
 

Hi thank you for the reply.I had actually set the differential pairs (4 pairs) .What i wanted was to set the length to say some value '50mm' and match the length for all the 4 pairs to '50 mm'.
 

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