Were you trying to format them with HTML? I bet the HTML filters on the mailing list were cutting out the links.
On Oct 30, 2008, at 2:44 PM, Eric Winsor wrote: > Steve, > > I don't see these other attempts. > > Eric Winsor > > Steve Meier wrote: >> Dave, >> >> No I struggled three times to get usable url's so go down a couple >> more >> of my attempts and then you will have to take the line breaks out >> of the >> ultra long url but you can get there. >> >> Steve Meier >> >> >> On Thu, 2008-10-30 at 16:29 -0400, Dave McGuire wrote: >> >>> I don't see any URLs in there.. >>> >>> -Dave >>> >>> On Oct 29, 2008, at 6:08 PM, Steve Meier wrote: >>> >>>> I went looking to see if the Analog Device book was available >>>> electronically. Here are the links. >>>> >>>> >>>> Steve Meier >>>> >>>> >>>> High Speed System Applications Table of Contents >>>> >>>> >>>> >>>> High Speed System Applications Section 1: High Speed Data >>>> Conversion >>>> Overview >>>> >>>> >>>> >>>> High Speed System Applications Section 2: Optimizing Data Converter >>>> Interfaces >>>> >>>> >>>> >>>> High Speed System Applications Section 3: DAC, DDS, PLL's, and >>>> Clock >>>> Distribution >>>> >>>> >>>> >>>> >>>> High Speed System Applications Section 4: PC Board Layout and >>>> Design >>>> Tools >>>> >>>> >>>> >>>> On Tue, 2008-10-28 at 13:44 -0700, Steve Meier wrote: >>>> >>>>> I won't argue this point. I will refer every one to an Analog >>>>> Device >>>>> publication "High Speed System Applications" copyright 2006 >>>>> ISBN-10: >>>>> 1-56619-909-3 or ISBN-13: 978-1-56619-909-4 >>>>> >>>>> In particular if you get a copy of this book (and they gave me >>>>> mine) >>>>> look at pages 4.15 and 4.16 >>>>> >>>>> There AD recommends connecting both of the A/D grounds "digital" >>>>> and >>>>> "analog" to the analog ground plane "this is because it causes >>>>> less >>>>> problems for the relatively small amount of digital return current >>>>> to be >>>>> returned through the analog ground than it would to connect the >>>>> converter to the much noisy digital ground. >>>>> >>>>> There is a lot more talked about then just that one blurb. >>>>> >>>>> Steve Meier >>>>> >>>>> >>>>> >>>>> On Tue, 2008-10-28 at 11:22 -0700, Joerg wrote: >>>>> >>>>>> Stefan Salewski wrote: >>>>>> >>>>>>> Sometimes it is necessary/recommended to partition (separate) >>>>>>> power or >>>>>>> ground planes, i.e. for ADC or DC/DC-Converters, see page 16 and >>>>>>> 17 in >>>>>>> >>>>>>> http://focus.ti.com/lit/ug/slwu028c/slwu028c.pdf >>>>>>> >>>>>>> We can do this in pcb program with (adjoining) polygons. >>>>>>> Disadvantage is, that if we change the size of one of the >>>>>>> polygons we >>>>>>> have to manually adjust the other sizes. A other method may be >>>>>>> so divide >>>>>>> a large polygon by copper clearing traces (with trace width >>>>>>> zero). >>>>>>> >>>>>>> This is related to my question from >>>>>>> >>>>>>> http://archives.seul.org/geda/user/Sep-2008/msg00387.html >>>>>>> >>>>>>> but not identical. >>>>>>> >>>>>>> What is the best way to handle this? >>>>>>> >>>>>>> >>>>>> I can't speak to that but just one word of caution: In my 20+ >>>>>> years in >>>>>> engineering I have yet to see one case where splitting a ground >>>>>> plane >>>>>> under high-speed ADCs has worked. Regardless of what application >>>>>> notes >>>>>> say. Usually it didn't work, lots of noise. Or it kind of >>>>>> worked but >>>>>> fell apart the instant somebody whipped out a GSM cell phone or >>>>>> BlackBerry. >>>>>> >>>>>> Myself, I never spilt a ground place. OTOH the industry >>>>>> practice of >>>>>> splitting planes is providing part of my income :-) >>>>>> >>>>>> The only time I split is where required for safety, for example >>>>>> patient >>>>>> isolation per 60601 (ECG, ultrasound etc.). >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> geda-user mailing list >>>>> geda-user@moria.seul.org >>>>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user >>>>> >>>> >>>> _______________________________________________ >>>> geda-user mailing list >>>> geda-user@moria.seul.org >>>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user >>>> >>> >> >> >> >> _______________________________________________ >> geda-user mailing list >> geda-user@moria.seul.org >> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user >> > > > > > _______________________________________________ > geda-user mailing list > geda-user@moria.seul.org > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user