On Tue, Oct 3, 2017 at 8:48 PM, Richard Wilbur <[email protected]> wrote:
>> the defaults in PADS for the gap separation btw were set to 2x. 4x >> seems an _awful_ lot, to my eye: i don't believe i've ever seen >> wiggles with such large separation. are you sure the app note didn't >> mean "4x separation centre-to-centre of the traces"? or, was the app >> note specifically applying to really *really* high frequency traces >> (above say... 2 or even 3 ghz)? > > Toradex, p. 17, section 6.2 as illustrated in figure 13. > > It matters more the greater the length of facing copper. So if you can only > get 15mil separation but split it into two or more wiggles, that would be > better than having one wiggle at 15mil separation (between facing copper of > the same trace). ok understood. sorry took a while to reply. ok so i think what i'll do is, turn HX1T into two wiggles (still with 20mil separation), there's space to do that, but otherwise leave everything else alone. nearly there - i still have to reply to the message a few days ago about the keepout area. l. _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
