Author Topic: How to auto-correct multiple violations?  (Read 2444 times)

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Offline NemoTopic starter

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How to auto-correct multiple violations?
« on: August 30, 2013, 03:28:12 am »
Hello,

I have just finished designing a processing board with a large FPGA and sent the gerbers to the manufacturing company a few days ago.

Today, I got a response from them saying that the minimum track width/clearance requirements are not met and they cannot fabricate this board. Of course, as a safety measure, I did check the PCB manufacturing specification beforehand; however, it seems that they had a different set of specs for 1 oz. copper thickness.

I managed to correct all (around 4000 nets worth) track widths using "Find Similar Objects" and PCB Inspector with only a few clicks, but I just can't figure out how to correct the clearance between tracks.


Is there any possible way to (auto-)correct the clearance between tracks other than manually clicking each track and re-positioning them? (that would pretty much require redesigning the whole board. I cannot afford to use auto-route on this board).


Thank you for reading this question.
 

Offline marshallh

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Re: How to auto-correct multiple violations?
« Reply #1 on: August 30, 2013, 04:20:12 am »
If you are short on inter-track clearance and there are a lot of neighbored tracks, you'll have to relayout those parts of the board.
You could try changing the design rule for that clearance and doing the track select + Ctrl-drag to move over a group of tracks at a time.

If it will cost you time to fix it, maybe find another fab that can do the tighter specs. Pay more per board but save the work.
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Offline NemoTopic starter

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Re: How to auto-correct multiple violations?
« Reply #2 on: August 30, 2013, 06:32:29 pm »
I expected there to be some sort of script for this kind of problem, but I suppose not.

At this time, I cannot change to another fab for a number of reasons. So the only choice I have is to manually re-route them all (a few days of all nighter would do  :'()


Thank you for the help.
 

Offline sacherjj

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Re: How to auto-correct multiple violations?
« Reply #3 on: September 04, 2013, 05:16:53 pm »
You might be able to tug them into clearance if it is slight adjustments.  You pull the trace in between the 3 handles and it slides sideways.  I've found I can move a half dozen over a bit without too much fuss.
 


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