[PCB_FORUM] Re: How to connect Two thru-hole pads that are placed same location.

That's fine.

 

So, you need a work around in Allegro to get rid of the ratsnest lines.

 

Make sure you leave "stretch etch" box checked when you move the
connector back into position.

 

Which was the original idea below:

 

Mark,

 

I never have done this, but it seems like it might work.

 

Move one of the connectors off board and make the connections, then move
the connector back into position.

 

If I had to guess, Allegro will keep the connection.

 

Just an idea, Hope this helps.

 

 

Dave Seymour

Ixia

919.267.4840

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Wednesday, August 27, 2008 10:58 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: How to connect Two thru-hole pads that are
placed same location.

 

Our schematic feeds the BOM. Must have both in the schematic for
different populations.


Dave Seymour wrote: 

Well, one could make a special padstack and remove the drill, just like
an SMT pad and waive the DRCs.

 

IMHO - The best way to would to let the BOM control which connector is
populated and only have one connector on the schematic.

 

In some backplane applications, the pins are really short and the
primary side connector and the secondary side connector share the same
hole.

On this type of backplane we have the BOM control the connector and the
schematic shows only one connector, even though both connectors (top,
bottom) are populated.

 

D

 

 

 

Dave Seymour

Ixia

919.267.4840

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Gerry Meier
Sent: Wednesday, August 27, 2008 10:34 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: How to connect Two thru-hole pads that are
placed same location.

 

What is that doing to do to your "Drill file" Double drills??

 

Gerry Meier, Sr. PCB Designer

Freedom CAD Services. Inc

Voice: (256)776-7470 or (603) 864-1350

Email:gerry.meier@xxxxxxxxxxxxxx

visit us at http://www.freedomcad.com

 

 

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Seymour
Sent: Wednesday, August 27, 2008 9:32 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: How to connect Two thru-hole pads that are
placed same location.

 

Mark,

 

I never have done this, but it seems like it might work.

 

Move one of the connectors off board and make the connections, then move
the connector back into position.

 

If I had to guess, Allegro will keep the connection.

 

Just an idea, Hope this helps.

 

 

Dave Seymour

Ixia

919.267.4840

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Wednesday, August 27, 2008 10:11 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] How to connect Two thru-hole pads that are placed
same location.

 

We have two thru-hole connectors placed on top of one another. One
populated, one not.
PROBLEM: We can not get rid of rats, because two pins / pads at same
X:Y.

Any ideas how to get connection to both pads?

We decided to remove net names from one of the connectors in the
schematic, to allow us to connect to one pad on board. Then waive DRC's.
We are using V.15.7 and Concept front end.

Regards,
Mark


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