[PCB_FORUM] Re: Making NCs invisible in Orcad?
- From: "westfeldt" <westfeldt_nbcd@xxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Wed, 7 Dec 2005 05:12:55 -0700
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>
Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx
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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-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:
<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx>
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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