>From your list, I have seen that the "do rules" on Electra at least *SAY*
they provide for #3 and #4... how well they actually work, I havn't tried
yet.


----- Original Message ----- 
From: <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Friday, May 21, 2004 10:05 AM
Subject: Re: [PEDA] Router comparison


> Mike,
>
> Would you happen to knwo any of the following?
>
> Between Situs, Electra, and Spectra, which honor:
> 1) internal board cutouts?
> 2) limited neckdown between pads and/or vias?
> 3) width and clearance attributes by net?
> 4) width and clearance attributes by net class?
> 5) teardrops or snowmen?
> 6) 0/60/120 degree instead of 0/90 degree routing bias?
> 7) via style attributes by net or net class?
> 8) length matching?
> 9) parallel pairs or triples?
> 10) rounded corners?
>
> Jeff Condit
>
> > Tony
> >
> > That is what keepouts are for....The router will obey them.  I use via
> > keepouts, I also train and channel routing with keepouts.   it takes a
few
> > tricks,
> >
> > Mike
> >
> >
> >
> > -----Original Message-----
> > From: Tony Karavidas [mailto:[EMAIL PROTECTED]
> > Sent: Friday, May 21, 2004 1:25 PM
> > To: 'Protel EDA Forum'
> > Subject: Re: [PEDA] Router comparison
> >
> >
> > Just because you WW in neat bundles doesn't mean you have to ignore
signal
> > groups.
> >
> > Anyway, I'm not wire wrapping boards. I'm making PCBs and I almost
always
> > have mixed analog/digital on the same board.  I prefer to keep the
digital
> > grunge out of my analog area. Sure, the auto router might like to find a
> > path for a data pin right next to an op-amp input, but *I* don't want it
> > there. I want to keep the data bus in a tight area, I'm not worried
about
> > crosstalk from data pin to data pin because the lines are settled by the
> > time a chip select comes along.
> >
> > Tony
> >
> >
> >
> > -----Original Message-----
> > From: Mike Reagan [mailto:[EMAIL PROTECTED]
> > Sent: Friday, May 21, 2004 7:52 AM
> > To: 'Protel EDA Forum'
> > Subject: Re: [PEDA] Router comparison
> >
> >
> >
> >
> >
> > I remember years ago an engineer getting mad at me because I
wire-wrapped
> > his circuit trying to make it look nice and neat with all the wires
bundled
> > together in "streets & avenues". He said it was a big cross talk
problem. He
> > wanted point-to-point with just a little slack in the wire length.
> >
> > Looks like some things never change.
> >
> > Tom
> > Absolutely,  I learned this from my WW days also.  If you  wanted the WW
> > card to work with the least amount of noise,  you never ran neat bundles
> >
> > Mike
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
> ---------------------------------------------
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> http://www.sunset.net/
>
>
>


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