That exact topic was printed in PCD many months ago.


> -----Original Message-----
> From: Harry Selfridge [mailto:[EMAIL PROTECTED]] 
> Sent: Wednesday, August 14, 2002 4:57 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Matched Lenghth Constraint
> 
> 
> Not necessarily true, Igor - there are many more detailed 
> analyses, but 
> take at look at http://www.ultracad.com/90deg.pdf as an example.
> 
> At 08:24 AM 8/15/2002 +1000, you wrote:
> >I would not recommend anyone to use 90deg corners as you 
> will run into 
> >the
> >emc problems.
> >
> >Igor
> >
> >-----Original Message-----
> >From: Narinder Kumar [mailto:[EMAIL PROTECTED]]
> >Sent: Wednesday, 14 August 2002 9:50 PM
> >To: Protel EDA Forum
> >Subject: Re: [PEDA] Matched Lenghth Constraint
> >
> >
> >Hi Mr. Malik,
> >
> >1 . Connection at 90 degree means the trace will place at at 
> 90 degree 
> >on bending like
> >
> >                                     _______________
> >                                    !
> >                                    !
> >     ---------------------!
> >
> >     2  45 degree mean on bends trace will be 45 degree
> >     3   Rounded mean on bends the trace will be rounded.
> >
> >And 66 MHz is not so high so you may use any one you like.
> >
> >Narinder
> >Solectron Invotronics
> >
> >
> >
> >----- Original Message -----
> >From: "Adeel Malik" <[EMAIL PROTECTED]>
> >To: "Protel EDA Forum" <[EMAIL PROTECTED]>
> >Sent: Tuesday, August 13, 2002 9:36 AM
> >Subject: [PEDA] Matched Lenghth Constraint
> >
> >
> > > Hi All,
> > >          I want to apply a matched-length constraint to 
> the signals 
> > > connected to the bus. In the Protel Design Rule dialog, there are 
> > > mainly 2 parameters to specify, one is Tolerance (whose 
> purpose is 
> > > obvious) and the other is Connection style. In connection style 
> > > there are three options 1)
> >90
> > > degree 2) 45 degree and 3) Rounded. Alongwith them there are also 
> > > options
> >of
> > > Amplitude and Gap.I couldn't understand these options so 
> Can someone 
> > > tell
> >me
> > > how these options are utilized effectively while routing a bus 
> > > running at 66MHz.
> > >
> > > Regards,
> > > ADEEL MALIK
> > >
> snip
> 
> 
> **************************************************************
> **********
> * Tracking #: CE76B3F12130C54FB1E3B9D912EE3862ED3F00E0
> *
> **************************************************************
> **********
> 

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