[PCB_FORUM] Re: double stacked components

  • From: "Gene Carman" <gcarman@xxxxxxxxxxxxxxx>
  • To: <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Wed, 15 Sep 2004 12:24:37 -0700

But how does variant manager handle the drcs of parts placed on top of each 
other in the layout?  

-----Original Message-----
From: chris.ball@xxxxxxxxx [mailto:chris.ball@xxxxxxxxx]
Sent: Wednesday, September 15, 2004 12:17 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: double stacked components



Tried to find you a link to a description but Cadence has re-named
everything since I bought. Allegro Expert came standard with it, I think. I
paid extra for it as an add-on to PCB Design Studio. It allows you to
create variant assemblies/schematics/BOM's with(out) de-populated and/or
substituted parts.

So you make a master schematic with everything, lay the board out, make a
master assembly (every part placed), then use the Variant Manager to create
unique assy/sch drawings depending on what you want stuffed.
-Chris



                                                                                
                   
                       JACK KELLY                                               
                   
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<icu-pcb-forum@xxxxxxxxxxxxx>           
                       Sent by: @VALSMTP                 cc:                    
                   
                                                         Subject:    
[PCB_FORUM] Re: double        
                       09/15/2004 03:01 PM                 stacked components   
                   
                       Please respond to                                        
                   
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what is the "variant manager" i haven't seen that

-----Original Message-----
From: chris.ball@xxxxxxxxx [mailto:chris.ball@xxxxxxxxx]
Sent: Wednesday, September 15, 2004 1:41 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: double stacked components



Doesn't the "VARIANT MANAGER" handle this kind of thing? I thought there
were provisions for substitutions as well as de-pop... but I'm still a
Cadence newbie and can't speak from experience. I would guess you'd need a
single footprint that was valid for both part numbers; a 'worst of both'.
-Chris




                       Kevin McCowan

                       <kmccowan@xxxxxxxxxxxxxx>         To:
icu-pcb-forum@xxxxxxxxxxxxx
                       @ VALSMTP                         cc:

                       Sent by: @VALSMTP                 Subject:
[PCB_FORUM] Re: double
                                                           stacked
components
                       09/15/2004 02:33 PM

                       Please respond to

                       icu-pcb-forum








I try to build a version that would cover both components at the
same time so this problem doesn't happen. Otherwise you just
need to ignore the drcs as "part of your job".
This is an ongoing problem that I believe has never been addressed
in the industry. I wonder why?
Hope this helps,
Kevin McCowan
Sr. PCB Designer
TSI Telsys

JACK KELLY wrote:
> we have boards with with multiple load options, which means we somtimes
have two versions of a thru hole connector stacked on top of each other.
> this means you have thru hole pins directly on top of each other.  how do
others handle this as far pin to pin drc's and duplicate drills in the
> drill table?
>    thanks in advance
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