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How To Find 1 Unrouted Net?

melview1

I am using OrCAD PCB Editor v16.2 and I have a design that has 1 unrouted net out of 366 nets.  I can't find where this unrouted net is.  I started by looking for the rats nest, but it doesn't show up.  I assume it is a very small disconnect that is difficult to find.  Does anyone know a way to find an unrouted net?  Maybe a menu option that can zoom me in to the net in question?  Any help would be appreciated.  Thanks.

 

 --Mark

  • Rik Lee

    Set the Color/Visibility to all invisible and then display all rats. You should see just the rat. You can also get an unconnected pins report and use the XY location listed to help find the missing connection. If the net has the VOLTAGE property applied you may want to remove that.

  • Nancie

    Maybe you can try this:

    Go in Tools --  Quick Report -- Unconnected Pins Report, and you will see the pins that are not connected. 

  • melview1

    Thanks for the tips guys, but none of them worked.  There's gotta be a way to have it zoom to the unrouted net or do an unrouted net report that gives you the coordinate of the net.  When I choose View-->Status, this is where I see "Unrouted nets:  1/366 0.3%"  In this status window, it allows you to click on all of the other items and get a report that gives you the location, but not the unrouted nets item.  Any other thoughts?

     

    --Mark

  • redwire

    Try the quick report again and click on the coordinate in the report. Turn pad filling off, rats on, top and bottom only copper on.  It's there!

    You might have to try both sets of coordinates to find the end that's unrouted and make sure all nets with NO_RAT have that property deleted.

    Still can't find it? Send it to me as an attachment.

  • noahness

    What I do when I have a hard to find unrouted net (or anything whose coordinates are given in a report):

    Zoom way in (perhaps to point where a pad fills the screen) and then open the unrouted nets report. Clicking the coordinate in the report will then center the screen at that coordinate at the current zoom level.

    Hope this helps.

     

    -Noah

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