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Differential pair routing issue

newstyle

 I am new user, have few questions need to get help.Appreciated. Working over time at weekend. :(

 1. I attached the two pictures, one project DP routing is the first one, another project is the second one, what's wrong setting of the first one? I need the routing to be parallel.

 2. If we need the etching length to be 40mm, how to set that?

 somebody said  need set in the Etch length, someone said it's actual propagation delay, others said  need set Topology structure. How to do that?

 3.How to set the trace gap between two DP pairs, I mean the gap between different DP pair, not the trace gap between one pair

Thanks,

  • steve

    It looks like your Routing Options are set to Arc and not line so look to the Options fold out menu on the roght hand side for the settings. You can also RMB on the screen and make sure Single Trace Mode is not checked. This means when routing a diff pair you will route one half then the other rather than routing them together. For the other settngs take a look at http://www.parallel-systems.co.uk/images/PDF/diffpairs_definition.pdf

  • newstyle

    Much appreciated. It's very helpful.

     This pad is special one, so sometimes will have the layout problem, i tried this on ther common pad, it's okay.

    yes, i will try to routing using single trace mode.Thanks,

  • newstyle

    Hi, Steve

    Appreciated, now i know how to set space between two DPs. Thanks,

     

    JL

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