[PCB_FORUM] Re: Shorting two or more nets together

  • From: Gerry Meier <gerry.meier@xxxxxxxxxxxxxx>
  • To: "icu-pcb-forum@xxxxxxxxxxxxx" <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Tue, 10 Jan 2012 16:39:44 +0000

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] On Behalf Of Macindoe, Gary
Sent: Tuesday, January 10, 2012 10:33 AM
To: 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

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