If someone invents it I'll come up with a marketing plan for it! = "Tweak-a-Via"...=20 Art Porter -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] = On Behalf Of Richard Jungert Sent: Thursday, July 03, 2008 10:54 AM To: todd t; Denomme, Paul S. Cc: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Looking for good source of information regarding = Via tuning I hope someday some one just invents one that you can design into a = circuit board and then tune it later during testing with a tweeker.=20 Richard Jungert > CC: si-list@xxxxxxxxxxxxx > From: tamast@xxxxxxxxx > To: Paul.Denomme@xxxxxxxxxxxxxx > Subject: [SI-LIST] Re: Looking for good source of information = regarding Via tuning > Date: Wed, 2 Jul 2008 19:20:31 -0400 >=20 > Paul, perhaps this article is of interest to you: > http://www.edn.com/index.asp?layout=3Darticle&articleid=3DCA324403 > "designing controlled impedance vias", by tommy neu, TI. not a =20 > replacement for a tried and true simulation study with a 3d field =20 > solver, but you'll be more familiar with what you're after and a =20 > general direction on how to get there. >=20 > ciao, > -todd t > -mantaro networks >=20 > On Jul 2, 2008, at 1:55 PM, Denomme, Paul S. wrote: >=20 > > Hi All, > > > > > > I have a customer that is looking for assistance in > > providing Via tuning. Basically they are looking to minimize the =20 > > impact > > their via's have on their high speed signals. I am familiar with = the > > various techniques to minimize the impact a via has on the signal > > integrity ( ie minimize pad size, maximize anti pad, remove NFP's, > > backdrilling, etc) but is their any good source of information on =20 > > how to > > tune a via to a particular impedance? What about software? I'm =20 > > familiar > > with the 3D field solvers, but is their any reasonably priced = software > > available that will support this type of work? Any assistance on = this > > issue would be greatly appreciated. > > > > > > > > Thank you > > > > > > > > Paul Denomme > > > > Viasystems > > > > > > > > > > > > > > The information contained in this communication and its =20 > > attachment(s) is intended only for the use of the individual to whom = =20 > > it is addressed and may contain information that is privileged, =20 > > confidential, or exempt from disclosure. If the reader of this =20 > > message is not the intended recipient, you are hereby notified that = > > any dissemination, distribution, or copying of this communication is = =20 > > strictly prohibited. If you have received this communication in =20 > > error, please notify postmaster@xxxxxxxxxxxxxx and delete the =20 > > communication without retaining any copies. Thank you. > > Translations of this available: > > Traduction disponible chez: > > Traducciones disponibles en: > > Vertalingen beschikbaar bij: > > = http://www.viasystems.com/dynamic_page.asp?page_symbol=3Demail_footer > > ____________________________________________________________________ > > ------------------------------------------------------------------ > > 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 technical documents are available at: > > http://www.si-list.net > > > > 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 > > > > >=20 > -- > =3Dtodd=3D > "be who you are and say what you feel, for those who mind, don't =20 > matter, and those who matter, don't mind" --dr. seuss >=20 >=20 >=20 >=20 >=20 >=20 > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >=20 > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list >=20 > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field >=20 >=20 > List technical documents are available at: > http://www.si-list.net >=20 > List archives are viewable at: =20 > //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 > =20 >=20 _________________________________________________________________ Watch "Cause Effect," a show about real people making a real difference. = Learn more. http://im.live.com/Messenger/IM/MTV/?source=3Dtext_watchcause ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net List archives are viewable at: =20 //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 =20 ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net 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