Hi, I'm using OrCAD pcb Designer professional version 17.2-2016 with Hotfix_SPB17.20.049. I tried to tune some traces to match them (data and control signals for a emmc, and I have already set the match group in constraint manager). But it seems I can only tune traces on the top and bottom layers, not inner layers (I changed the options to inner signal after choose route->Delay tune. ) I'm wondering why I can not tune traces on the inner signal layers. Did I miss any setting, or is it a bug for version 17.2-2016? By the way, I read that allegro 16.6 has Auto-interactive delay tune, but I did not find this option in pcb Designer professional version 17.2-2016, why? Anybody knows about this, any reply is appreciate. Thank you in advance! With best wishes Mingyuexin
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