How about a constraint region that would allow the pad-to-pad DRC. Make the region as small as possible to avoid any accidental DRC's. I use something similar when using the net-short property that involves quite a few nets going to one spot. In my case there are too many routes to avoid a line-to-line DRC, but I used a constraint region to get rid of the DRC's. The constraint region is in yellow. Not sure if this picture will come thru. [cid:image001.jpg@01CCCFA2.0CCCED30] From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Gerry Meier Sent: Tuesday, January 10, 2012 8:40 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Shorting two or more nets together I would probably "Waive it" with a detailed description. I prefer that over the No_DRC property because the visual DRC can be turned on or off and a report can be generated. Gerry. Gerry Meier, Sr. PCB Designer Freedom CAD Services. Inc Voice: (256) 715-1424 Email:gerry.meier@xxxxxxxxxxxxxx Skype: rgmeier3 visit us at http://www.freedomcad.com<http://www.freedomcad.com/> P Think Green only print as needed. From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Macindoe, Gary Sent: Tuesday, January 10, 2012 10:33 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together Actually, I meant in the App Note example (via of one net inside the pad of another). Regards, Gary MacIndoe Senior PCB Design Engineer EbD R&D Hardware Surgical Solutions Group Covidien 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com<http://www.covidien.com> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Gerry Meier Sent: Tuesday, January 10, 2012 9:29 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together I think if you pull the shape back so it does not include the origin of the pin you are shorting to you will not get that error. Gerry Meier, Sr. PCB Designer Freedom CAD Services. Inc Voice: (256) 715-1424 Email:gerry.meier@xxxxxxxxxxxxxx Skype: rgmeier3 visit us at http://www.freedomcad.com<http://www.freedomcad.com/> P Think Green only print as needed. From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Macindoe, Gary Sent: Tuesday, January 10, 2012 10:25 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together Fair enough, but how would you get rid of the DRC in that example? Regards, Gary MacIndoe Senior PCB Design Engineer EbD R&D Hardware Surgical Solutions Group Covidien 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com<http://www.covidien.com> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Gerry Meier Sent: Tuesday, January 10, 2012 9:12 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together True - but anything could short to that pin and "Not be Reported". I am not the only one who works on my boards so I tend to constrain so it cannot be wrong by lack of knowledge. Hope that was politically correct. Gerry Meier, Sr. PCB Designer Freedom CAD Services. Inc Voice: (256) 715-1424 Email:gerry.meier@xxxxxxxxxxxxxx Skype: rgmeier3 visit us at http://www.freedomcad.com<http://www.freedomcad.com/> P Think Green only print as needed. From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Macindoe, Gary Sent: Tuesday, January 10, 2012 10:06 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together Not in the example I gave, it only allows the DRC for that pin, not the whole net. Regards, Gary MacIndoe Senior PCB Design Engineer EbD R&D Hardware Surgical Solutions Group Covidien 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com<http://www.covidien.com> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of TEYSSIER Jean-Charles Sent: Tuesday, January 10, 2012 8:55 AM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together Ouch....... Verry dangerous. It is kind of property i avoid to use (it allow ALL drc's with all nets) Jean-Charles TEYSSIER Responsable d'affaire Adeneo Adetel Group 2, chemin du Ruisseau 69134 ECULLY - FRANCE Tél:+33(0)4 26 49 04 09-Fax:+33(0)4 72 86 05 39 www.adetelgroup.com<http://www.adetelgroup.com/> P Before printing, think about ENVIRONMENTAL responsibility! ________________________________ De : icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> De la part de Macindoe, Gary Envoyé : mardi 10 janvier 2012 16:50 À : icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Objet : [PCB_FORUM] Re: Shorting two or more nets together My guess is that you could put a "No_Drc" property on the pin. Regards, Gary MacIndoe Senior PCB Design Engineer EbD R&D Hardware Surgical Solutions Group Covidien 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com<http://www.covidien.com> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Carrow, Dennis Sent: Tuesday, January 10, 2012 8:38 AM To: 'icu-pcb-forum@xxxxxxxxxxxxx' Subject: [PCB_FORUM] Re: Shorting two or more nets together So I follow the doc when building by symbol but I have pad to pad errors because I have via pads inside of a larger pad. I see on figure 3 of the ap note they have pad to pad errors also. So do I leave these errors or am I missing a step? Thanks! -DC From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Gerry Meier Sent: Monday, January 09, 2012 4:30 PM To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx> Subject: [PCB_FORUM] Re: Shorting two or more nets together Try this Gerry Meier, Sr. PCB Designer Freedom CAD Services. Inc Voice: (256) 715-1424 Email:gerry.meier@xxxxxxxxxxxxxx Skype: rgmeier3 visit us at http://www.freedomcad.com<http://www.freedomcad.com/> P Think Green only print as needed. From: icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]> On Behalf Of Carrow, Dennis Sent: Monday, January 09, 2012 4:27 PM To: 'icu-pcb-forum@xxxxxxxxxxxxx' Subject: [PCB_FORUM] Shorting two or more nets together Hi Everyone, Can I ask how to properly short two or more grounds at a common point using Cadence Allegro 16.X and Design Entry HDL? Thanks for any and all ideas! DC