| ID: | 4466 |
| From: | Majenko Technologies <ma...@majenko.co.uk> |
| Date: | Mon, 26 Oct 2020 22:44:46 +0000 |
| Subject: | Re: [pcb-rnd] Bug: polygons connected to nets are ignored in DRC |
| in-reply-to: | 4464 from ge...@igor2.repo.hu |
--000000000000f4899405b29aad20 Content-Type: text/plain; charset="UTF-8" Nice. Works well. On Mon, Oct 26, 2020 at 1:10 PM <gedau@igor2.repo.hu> wrote: > > > On Tue, 1 Sep 2020, Majenko Technologies wrote: > > >A polygon connected to a net (for example a ground plane) is ignored by > DRC > >clearance tests. In the attached PCB the connection between C101 and C102 > >(net LINK) should fail DRC as the clearance is below the specified 0.15mm > >between it and the ground (net GND). But it doesn't. > > Thanks, fixed in r33178, please test! > > Note: the short will be reported exactly twice, and that's intentional: it > is found from both nets point-of-view (that's why the red-blue highlight > swaps between the two reports). In extreme cases, with more complicated > drc rules you may find an asymmetric case, e.g. a high voltage network > requires a 4mm clearance, but plain signals require only 0.2mm, and you > have 3mm - that way only the high voltage net would flag this as a > violation. > > Regards, > > Igor2 > > > > -- *Matt Jenkins* Majenko Technologies https://majenko.co.uk --000000000000f4899405b29aad20 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Nice. Works well.</div><br><div class=3D"gmail_quote"><div= dir=3D"ltr" class=3D"gmail_attr">On Mon, Oct 26, 2020 at 1:10 PM <<a hr= ef=3D"mailto:gedau@igor2.repo.hu">gedau@igor2.repo.hu</a>> wrote:<br></d= iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord= er-left:1px solid rgb(204,204,204);padding-left:1ex"><br> <br> On Tue, 1 Sep 2020, Majenko Technologies wrote:<br> <br> >A polygon connected to a net (for example a ground plane) is ignored by= DRC<br> >clearance tests. In the attached PCB the connection between C101 and C1= 02<br> >(net LINK) should fail DRC as the clearance is below the specified 0.15= mm<br> >between it and the ground (net GND). But it doesn't.<br> <br> Thanks, fixed in r33178, please test!<br> <br> Note: the short will be reported exactly twice, and that's intentional:= it <br> is found from both nets point-of-view (that's why the red-blue highligh= t <br> swaps between the two reports). In extreme cases, with more complicated <br= > drc rules you may find an asymmetric case, e.g. a high voltage network <br> requires a 4mm clearance, but plain signals require only 0.2mm, and you <br= > have 3mm - that way only the high voltage net would flag this as a <br> violation.<br> <br> Regards,<br> <br> Igor2<br> <br> <br> <br> </blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"= class=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><b>Matt J= enkins</b><div>Majenko Technologies</div><div><a href=3D"https://majenko.co= .uk" target=3D"_blank">https://majenko.co.uk</a></div></div></div></div></d= iv> --000000000000f4899405b29aad20--
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4466 Re: [pcb-rnd] Bug: polygons connected to nets are ignored in DRC from Majenko Technologies <ma...@majenko.co.uk>