[PCB_FORUM] Re: Making NCs invisible in Orcad?

  • From: Ed Caldwell <Ed.Caldwell@xxxxxxxxxx>
  • To: icu-pcb-forum@xxxxxxxxxxxxx
  • Date: Wed, 7 Dec 2005 08:13:32 -0500

Patrick,

The 'secret way' works fine and is a better solution.

Thanks,
Ed




"westfeldt" <westfeldt_nbcd@xxxxxxxxx> 
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12/07/2005 07:12 AM
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[PCB_FORUM] Re: Making NCs invisible in Orcad?






Yes there is a secret way, which I think one or more of the responses 
described.  When you are in the Orcad symbol, pull down options/part 
properties.  Then pick "New".  In name boxe, type NC.  Then in value box, 
type the pins you want hard no-connect, delineated by commas.  i.e. 
3,7,23.  If you have large numbers of them, you can make the string in 
excel, output ascii, then paste it into the value box.
 
Patrick Westfeldt, Jr. 
720-406-0887 
 

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx 
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Allegro fan
Sent: Tuesday, December 06, 2005 10:34 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Making NCs invisible in Orcad?

Thank you all for your help. Yes, I was just hoping that there was a 
secret way to hide NC pins on the Orcad symbol in the same way that power 
pins can be hidden. From what I can tell there is no straight forward way 
to do this unless I missed something. 

Ray

On 12/5/05, Ed Caldwell <Ed.Caldwell@xxxxxxxxxx> wrote: 

Ray, 
If you just want to get rid of the no connect square box and no connect 
"X" - add the no connect "X" to your zero length pin and change the 
graphic prefs for the no connect to non print and color white (or same 
color as your background) 
Ed 

Ed Caldwell
Circuit Board Design Engineer 
Electronic Design Services, LLC
Voice: 770-622-8707
Email: mailto:ed.caldwell@xxxxxxxxxx 
  


"David Greig" <david@xxxxxxxxxxxxxx> 
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12/05/2005 09:55 AM 

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[PCB_FORUM] Re: Making NCs invisible in Orcad?








 
Here's an example. You only need to add the NC property on one item of a 
multi part.

There's not much error checking in Orcad, but allegro will barf if there 
is not agreement between the package pin count and the
netlist.

Best Regards

David Greig
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t: +44 (0)1383 624 975
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-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto: 
icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Allegro fan
Sent: 01 December 2005 20:22
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Making NCs invisible in Orcad?

Hello All,

I do not want no-connect pins to be visible in my Orcad schematics.
Currently, my best solution is to use zero-length lines for pins like NC1, 
NC2, NC3, etc. On ICs it's not so bad because its
nice sometimes to be able to verify that a pin is in fact a no connect.

But, having a "you haven't connected a pin" square show up on my diode 
symbol is driving me nuts. The schematic symbol looks
like a 2-terminal diode, but the footprint is an sot-23. I want the damn 
NC pin to go away on the schematic!  Any help on this?

Thanks, Ray
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