Re: gEDA-user: ready-made style classes

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Thu, Jan 27, 2005 at 06:33:39AM -0500, Ales Hvezda wrote:
> 
> [ Ales here, I'm reposting this since majordomo didn't recognize the
>   e-mail as being subscribed to the geda-dev/geda-user mailinglist. ]
> 
> -- Cut here --
> Date: Fri, 21 Jan 2005 05:31:34 -0800
> From: Stephen Meier <smeier@xxxxxxxxxxxxxxx>
> 
> Well my two comments are. line widths on critical traces (high speed 
> clean analog for example) should be determined by the frequency of 
> interest, the dialectric propertoies of the plastics and if there is a 
> copper plane underneith them. In other words. Trace widths are one 
> parameter that can easily be adjusted for setting the impedence of a trace.
> 
> Second, on that 900 pin bga I used 4 mil traces and vias with 10 mil 
> diamater drill width and 18 mil copper pads.
> 
> So the values need to be project selectable.
> 
> What I would prefer is an extra tribute for these elements. For example,

I did mean that the user will not be forced in any way to the premade class.
It would just change all four style settings like when you change them in the
menu manually.

Cl<