[PCB_FORUM] Re: Shorting two or more nets together

  • From: "Macindoe, Gary" <Gary.Macindoe@xxxxxxxxxxxx>
  • To: "icu-pcb-forum@xxxxxxxxxxxxx" <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Tue, 10 Jan 2012 15:36:16 +0000

You're welcome. One more thing: Ensure that the two nets being shorted always 
have assigned net names, not just machine assigned net names (i.e. not 
NXXXXXXX).

If the DE re-netlists, the original machine assigned net name may change.


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

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx 
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Carrow, Dennis
Sent: Tuesday, January 10, 2012 7:23 AM
To: 'icu-pcb-forum@xxxxxxxxxxxxx'
Subject: [PCB_FORUM] Re: Shorting two or more nets together

Perfect!  Thanks Gerry!  Thanks Gary!

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx 
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Gerry Meier
Sent: Monday, January 09, 2012 5:41 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Shorting two or more nets together

Gary,

We always send ODB++ too! It should be there. I typically have a note on the 
fab to see the ipc-netlist  for short information.

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: Monday, January 09, 2012 5:03 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Shorting two or more nets together

Thanks for the PDF Gerry!

So it will be in the IPC-356 netlist file, but will they be sure that it's 
intentional?

Also, we switched to only providing ODB++ output. What about that case?

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: Monday, January 09, 2012 4:00 PM
To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx>
Subject: [PCB_FORUM] Re: Shorting two or more nets together

The net short information (XY's)will be in the IPC-356 netlist comment section 
"Unless" to attach it to a shape. I do not attach it to shapes.

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: Monday, January 09, 2012 4:47 PM
To: icu-pcb-forum@xxxxxxxxxxxxx<mailto:icu-pcb-forum@xxxxxxxxxxxxx>
Subject: [PCB_FORUM] Re: Shorting two or more nets together

Hey Dennis,

You can put the "Net_Short" property on a pin, via or shape with the Value 
field as "[net1]:[net2]" (I think three nets would be "[net1]:[net2]:[net3]").

I can't remember for sure, but you may want to run a Database Check afterwards.

Also, I would suggest including a Net Short document along with the Fab files 
in order to avoid the inevitable phone call/e-mail.

As far as the schematic is concerned, I'm not sure. But I would think at least 
a Note would be in order.

Regards,

Gary MacIndoe
Senior PCB Design Engineer
EbD R&D Hardware
Surgical Solutions Group
Covidien
Boulder, CO 80301

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 3:27 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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