[PCB_FORUM] PinPair results in CM

Hello all.

 

I have a BRD without any DRCs on 15.5.1 with a lot of diff pairs
constraints.

When I open it on 15.7 I got thousand of DRCs due to diff pairs phase
tolerance.

 

The routing of all these DP is almost the same:

From a driver to a connector and then to another connector on the other
side.

Some of DP are OK and the next one as a DP phase tolerance of approx
700mils

Strange, because of the similar routing, one time OK, the other not.

 

After a long search to understand why, I saw that the problem is in
Constraints Manager:

The whole bus J1 contains only nets

  J1 (bus)

    J1<1> (net)

    J1<2> (net)

    ...

 

but the J1* is defined like that:

J1* (bus)

 J1*<1> (net without any structure below) this one is OK for phase
tolerance

+J1*<2> (net with structure below) this one is not OK

  JET1B.7:JET1T.8 (this is the listed structure of J1*<2>. It shows
"Pinpair result" on move over

  JET1T.8:IC19.37  (The secon part of the structure)

+J1*<3>

.....

 

How to remove the pinpair result structure of all wrong nets?

Or how to add it to other nets?

Thanks in advance.

 

            William.

Other related posts: