At 09:39 PM 8/21/2005, Terry Creer wrote:
In P99SE is there a way to check for holes that overlap?
This is assuming that they are on the same net.
Does it matter what the net is?
AFAIK, there is no ready-made tool. It could be done, though, and if it
were considered important enough, the process could be made simpler. There
might also be something in CAMtastic, I'm not familiar enough with it to
know. Certainly fabricators have tools to detect hole overlap or proximity
problems.
Here is a method which should work. I'm not going to give all the intimate
details. The spreadsheet would be used for many of the tasks. (I'd take the
pad and via data out of Protel into Excel..., then back into a working copy
of the PCB file.)
1. Identify (and presumably eliminate) all *coincident* double-hits.) This
can be done with the spreadsheet, but there is also the information in the DRR.
2. Change all pad and via diameters to match the hole size.
3. Change all pad and via net assignments to match the hole location. (That
is, the net would be, say, the X coordinate, hyphen, the Y coordinate.)
4. I forget, but it might be necessary to create the nets, and I can't test
it at the moment.
5. Use DRC to identify contact (or minimum gap violation) between the
different nets.
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