[PCB_FORUM] Re: Dynamic Shapes-15.1
- From: "Scott, Ron" <rg-scott@xxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Fri, 6 Aug 2004 15:17:14 -0500
Kevin,
I think this has a two-fold answer. The first reason to use negative
planes is the gerber file is much smaller; hence easier for electronic
transport. Secondly, if the positive dynamic shape works so well (which
it does), why wouldn't the negative shape work as well? It would be
better if it didn't work at all rather than the intermittent behavior it
now exhibits. I think Cadence should be able to answer it.
Regards,
Ron Scott
Texas Instruments
Tel: 214.480.4715
Cell: 972.816.7978
rg-scott@xxxxxx
-----Original Message-----
From: Kevin McCowan [mailto:kmccowan@xxxxxxxxxxxxxx]
Sent: Friday, August 06, 2004 12:34
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Dynamic Shapes-15.1
I, personally, am really happy with the dynamic planes.
I have had very few (virtually none) problems that have not turned out
to be some dumb "I didn't know" problem on my part.
I especially like the properties that allow me to tailor individual pins
and stuff to get special spacing, line widths and all the other stuff it
lets me do. And it seems very fast to respond to the changes. Of course,
I only use positive plane layers to generate my plane data. Why don't
you? What do you gain by using negative plane layers?
Kevin McCowan
Sr. PCB Designer
TSI Telsys
Scott, Ron wrote:
> All,
>
> While the dynamic shapes are really cool, they also seem to be
> inconsistent on negative plane layers. The particular application is
> power plane splits. Sometimes the dynamic feature will work and
> sometimes not. Most of the time I have to do a manual void on negative
> planes. Has anyone encountered this problem in 15.1?
>
> Regards,
>
> Ron Scott
> Sr. PCB Designer
> Texas Instruments
> Tel: 214.480.4715
> Cell: 972.816.7978
> rg-scott@xxxxxx
>
>
>
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