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16.6 Viewer assign color for diff pairs

Mstrghettorigg

Hi all,

Is there a way to assign color to diff pairs in the 16.6 free viewer?

I tried going to assign color and selecting diff pair on "Find by Name" section and clicked more and selected diff pairs shown and clicking apply then I get an error "E- Command not found: _xdbgrouptype diff_pair "

I was able to get this to work on licensed software so I'm guessing it's just not available in the viewer.

Has anyone had any luck with this?  There are people using viewer that like to locate diff pairs easily on the board.  (Constraints slightly vary depending on the designer so I'm thinking assigning color by constraints/property might be hard for someone who doesn't use Allegro on regular basis to identify as easy)

Please let me know if anyone has suggestions that may be simple for novice user to use.

  • BillOL

    “ dalTools has a great Board Viewer called dalView that can do what you want and a whole lot more. You can download a free eval at www.daltools.com.

    Here is a set of 4 videos that demo the tool. http://www.daltools.com/demo/dalView/ “

    I don't think it can color the diff pairs exactly like you want, but you can browse the nets by net_matching any net that has an _p or _n in it so it would do mostly what you want.

    If  you've ever worked with dalTools, you just make a suggestion to themn and you'll  get the feature pretty quickly if they think it makes sense

  • steve
    You can do this without any "add ons". Try opening the free viewer (C:\Cadence\SPB_16.6\tools\pcb\bin\allegro_free_viewer.exe) then open the board, then go to Display - Colors, click on the Nets radio button and assign the required color to the diff pair object.
  • Mstrghettorigg

    Hi Steve,

    Thank you for the feedback.  I always forget about using the Nets Radio button.

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