[PCB_FORUM] Re: Allegro Sub drawing / Via stitch problem

Hi Mark,

While Export-Subdrawing, goto the "options" tab in the control panel and check 
the "Preserve nets of shapes" is enabled.
Try , hope this helps.

Thanks,
Ismail.
 




________________________________
From: Mark Salberg <msalberg@xxxxxxxxxxxx>
To: Cadence User Group <icu-pcb-forum@xxxxxxxxxxxxx>
Sent: Monday, 27 July, 2009 6:33:42 PM
Subject: [PCB_FORUM] Allegro Sub drawing / Via stitch problem

Hello all,
When Exporting a Sub-Drawing I found that any vias in a shape used for 
stitching...connected to a shape, but has no traces to a pin...looses 
connectivity and sometimes connect to a different plane after import 
sub-drawing.
The only way I have found to fix it is to ALSO route a trace from a pin to the 
via to force the connection.

Is there a way to locate any occurrences of this prior to exporting a 
Sub-Drawing?

Thought maybe dangling wire reporting as dangling via...but a Dangling via is 
defined a a via with only one connection from a pin. These vias simply dropped 
in a shape for thermal reasons do not get flagged.

Any thoughts as to how to find them in a design?

Thanks,
Mark


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