Issue: Short where two split planes come together over a pad that is to be connected 
to 

One of the planes.

 

Condition: Protel 99Se, DXP and 2004 Cad systems automatically places a connection 
(direct connect in this case) or a clearance pad to a hole if  the pad/hole falls with 
the defined area of the split plane and depending upon the net name associated to the 
pad  and the net name associated to the split plane region or area being defined.



Situation:  I ran a separation trace defining the split plane area over a pad that 
should have been connected to one side and cleared from the other. Protel s 99SE 
program did as it is programmed to do, in that it placed a connection thermal or 
direct connect at that pad location which was also connected to the adjacent plane 
area at the same hole.

 

Cause: Protel does not have a Design rule check that measures hole edge to copper 
which are the two features that need to be measured or tested to prevent this from 
happening in the future programmatically.  The automatic placement of a connection or 
clearance to a pad is determined based upon the exact X,Y location of the center line 
of the separation trace with respect to the center of the hole/pad in question. 


What solution and or work around does anyone suggest.. 

When will Protel add the test to check for hole edge to copper edge or plane edge 

during a DRC.?

 

Thanks in advance 

Samuel C. Cox Jr.

Cad Manger 

Dawn VME Products

47915 Westinghouse Dr.

Fremont, Calif. 94539

[EMAIL PROTECTED]


Samuel C. Cox Jr.
6902 Serenity Court
San Jose, California 95120
(408) 268-9779
[EMAIL PROTECTED]

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