[PCB_FORUM] Re: Instance property in Capture CIS
- From: "Chris Brennan" <Chris.Brennan@xxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Thu, 7 Apr 2005 10:59:17 -0400
Yes for sure.
Chris Brennan, C.I.D.
PCB Designer
Fidus Systems Inc.
chris.brennan@xxxxxxxx
Tel (613) 828 0063 x322
Fax (613) 828-3113
-----Original Message-----
From: gary [mailto:rogiru@xxxxxxxxx]
Sent: Wednesday, April 06, 2005 9:27 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Instance property in Capture CIS
This will work only for flat designs and simple
hierarchical designs.
Gary
--- Chris Brennan <Chris.Brennan@xxxxxxxx> wrote:
> Use Accessories -> Transfer Occ. Prop. To Instance
> -> Push Occ. Prop.
> Into Instance.
>
> CJB
>
>
> Chris Brennan, C.I.D.
> PCB Designer
> Fidus Systems Inc.
> chris.brennan@xxxxxxxx
> Tel (613) 828 0063 x322
> Fax (613) 828-3113
>
> -----Original Message-----
> From: Naren [mailto:naren@xxxxxxxxxx]
> Sent: Wednesday, April 06, 2005 12:23 AM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: Instance property in
> Capture CIS
>
> Hello Mr Drew
>
> Can I make same instans & occurance
> propertie same with
> one command ?
> If so then what is the command for it (If anyone
> knows it)!!
> Drew said:
> >
> > Hello,
> >
> > I have one little alteration to what David posted.
> As soon as the
> > part is first placed, the schematic has both an
> instance and an
> > occurrence whether the schematic is flat or not.
> See Capture's online
> > help for "instances and occurrences". It is
> neither extremely simple
> > nor anywhere near as complicated as pre v7.2
> definitions made it seem.
> >
> > Expanding on David's post...
> > The way I see it is; if a part is *exactly* the
> same (REFDES does not
> > count) and I have two or more of that part, I have
> one instance and
> > two or more occurrences. If I select a part in
> the schematic, edit a
> > property of that part and update only the
> "current" part, I have
> > created another instance. *** The design cache
> will show this.
> > Different properties for the same part will create
> more instances.
> > More than one instance of what I thought was the
> same part is
> > noticeable when I create a BOM. Ah,.. some of
> them are 0402s and some
> > of them are 402s. Or, some of them are 1uF and
> some of them are
> > 1.0uF.
> > ***After rereading the help file, I am not sure if
> Capture thinks the
> > same way I do.***
> >
> > Pin swapping would not alter the occurrence or add
> an instance. Yes,
> > graphically the part will be different but the
> properties of a part
> > cannot change with a back-annotation by pin-swap
> file only.
> > Capture's use of instance and occurrence has
> always caused me some
> > confusion. I have always selected the default and
> never looked back.
> >
> > Cheers!
> > Drew
> >
> >
> > ----- Original Message -----
> > From: "David Greig" <david@xxxxxxxxxxxxxx>
> > To: <icu-pcb-forum@xxxxxxxxxxxxx>
> > Sent: Tuesday, April 05, 2005 6:55 AM
> > Subject: [PCB_FORUM] Re: Instance property in
> Capture CIS
> >
> >
> >
> > If you had a flat schematic - no hierarchy then
> you would only have
> > instances. Pspice is flat (and not particularly
> Berkley!). PCB type
> > schematics can be hierarchical.
> >
> > Occurrences are the different repetitions of the
> original instance
> > when a
> > hierarchy block is repeated.
> >
> > That's the basic idea, instances are the white
> properties, the dashed
> > bits
> > are properties inherited from the library and
> unchanged, yellow bits
> > are the
> > occurrence properties and non-dashed have been
> changed either directly
> > or
> > via backanno etc.
> >
> > That's the basic idea, but we are talking
> Orcad_speak so don't take it
> > too
> > literally!
> >
> > Surprisingly pin-swapping a flat file does not
> generate occurrences
> > even
> > although the symbols pins get shifted. Guess that
> just a changed cache
> > symbol.
> >
> > Best Regards
> >
> > David Greig
> > ______________________________
> > GigaDyne Ltd
> > Buchan House
> > Carnegie Campus
> > Dunfermline KY11 8PL
> > United Kingdom
> > t: +44 (0)1383 624 975
> > ______________________________
> >
> > -----Original Message-----
> > From: Naren [mailto:naren@xxxxxxxxxx]
> > Sent: 2005-April-05 14:24
> > To: icu-pcb-forum@xxxxxxxxxxxxx
> > Subject: [PCB_FORUM] Instance property in Capture
> CIS
> >
> > Hi all
> >
> > I am using Cadence 15.2 PCB package. For schematic
> purpose I am using
> > Capture CIS.
> >
> > My question is what is instance & occurance
> property of the components
> > ?
> > Can we change with one command (If any) If both
> are differ.
> >
> >
> >
>
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>
-----------------------------------------------------------
> >
>
>
> --
> "Keep looking foreward"
>
> Regards
> Naren Thesia
> Member CAD
> D'GIPRO SYSTEMS PVT. LTD. BANGALORE
> TEL: 080-25219017/18 (O)
>
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