Too True! > [Original Message] > From: Andrew Ingraham <a.ingraham@xxxxxxxx> > To: si-list <si-list@xxxxxxxxxxxxx> > Date: 1/7/2007 3:03:13 PM > Subject: [SI-LIST] Re: Shielding clock traces on PCB's > > > Guard traces ar great ways to make accidental band pass filters. Why > > would anyone advise using them to control cross talk? > > Because the word hasn't gotten around to most electrical engineers that it > doesn't work like they think it should. So it continues to be done, and > many engineers wouldn't think there is anything wrong with it. > > On first glance it seems like a reasonable thing to do, akin to putting a > shield around a wire, turning it into coax. Reality is another matter. > > Andy > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu