Lee, I am afraid that you will need to be more specific as to which tests you mean, since both you and I have conducted experiments with X2Y parts. As you know I have done many experiments and written numerous papers on behalf of X2Y over the years. The parts when properly applied as recommended by X2Y have always performed extremely well and consistently to X2Y's published test results. Just last week a first time customer went through conducted and radiated EMC tests with a design that has five total X2Y instances. The customer's placement and layout closely follows X2Y recommendations. The customer's highly experienced EMC engineer tested his DUTs with and without those five parts populated. He described the difference as so great as to be in his own words: "nearly magical". Best Regards, Steve On 9/8/2014 9:06 AM, Lee wrote: > You mean like the X2Y tests? > *From:* steve weir <mailto:weirsi@xxxxxxxxxx> > *Sent:* Sunday, September 07, 2014 9:06 PM > *To:* leeritchey@xxxxxxxxxxxxx <mailto:leeritchey@xxxxxxxxxxxxx> ; > Alfred Alfred <mailto:alfred1520list@xxxxxxxxx> > *Cc:* Leeyuyun <mailto:lee.home.61@xxxxxxxxx> ; si-list@xxxxxxxxxxxxx > <mailto:si-list@xxxxxxxxxxxxx> > *Subject:* Re: [SI-LIST] Re: One stitching via or more vias is better > for 25Gbps application??? > Experiments are an important way to sanity check ideas and simulation > results. There are lots of ways to put bad assumptions into a > simulation model and get results that aren't real. But the flip side > is that all experiments are limited in their ability to isolate the > controlled variable. Even assuming that we have not made any mistakes > in our set-up or measurements we still always need to be wary about > generalizing the result of any given experiment or experiments. > > Best Regards, > > Steve > > On 9/7/2014 8:49 PM, leeritchey@xxxxxxxxxxxxx wrote: >> All of the things proposed don't seem to have any basis. I, on the >> other hand, have built test boards to find out. My findings are >> available in my classes and do not show such vias have any value. >> >> Sent from my HTC One⢠X, an AT&T 4G LTE smartphone >> >> ----- Reply message ----- >> From: "Alfred Alfred" mailto:alfred1520list@xxxxxxxxx >> To: mailto:leeritchey@xxxxxxxxxxxxx >> Cc: mailto:weirsi@xxxxxxxxxx, "Leeyuyun" >> mailto:lee.home.61@xxxxxxxxx, mailto:si-list@xxxxxxxxxxxxx >> mailto:si-list@xxxxxxxxxxxxx >> Subject: [SI-LIST] Re: One stitching via or more vias is better for >> 25Gbps application??? >> Date: Sun, Sep 7, 2014 7:26 PM >> >> >> Dear List, >> I am very interested in seeing Lee's reply. Where can I find the >> ungarbled version? Thanks. >> Best Regards, >> Alfred >> On Sun, Sep 7, 2014 at 6:41 PM, leeritchey@xxxxxxxxxxxxx >> <mailto:leeritchey@xxxxxxxxxxxxx> <leeritchey@xxxxxxxxxxxxx >> <mailto:leeritchey@xxxxxxxxxxxxx>> wrote: >> >> N ¬²â¹Â§vÃbâæâºÅ à >> ²êi¢Ã¢¶*'«az»ajzÃjW§â)Ãz¸§ÆôžžÃë¢i² 0Ž ïÿý ÃÅ >> ÿO >> â¹LK&j»iâ â°Ãÿÿÿý ©â)ž²à {ÿÿÿñk¢oÿ²Ã¯{ >> ¢¯ÿðz*ìâ¹Ã¸Â©nZ1ýÃ&ý:ÿü·žÃ쮟ÿåyïá¢gÿë_à >> â¢Â¨Â¥Ã½Ã&ü'ÿþÃÿâ+-ýúÃzX¦Ãè® >> ÿ²/åŠÃÿ~·žâ+-³ú+Æô®n7Å·ÿÃ#òÃI?Ã{ó§zÃbµÃbž >> âjŠæ¢·¯â°Â«"±·Âµêâ½¹ >> ºljÅ¡eâ°ÃÂÅ â°Ã¿Ã¿Ã°Ãµïú ÃzžÿÃMxÃOøà ¶ >> §âÃZ·*.j·Å¢{"uêâž ¡Š_Âê®zw2¦º >> â¢Ã©Â¢Å¾Z0~·ª¹éÃÃëšÃö+\â øš²)©iÃmâ¦Ã§ ¾+rý©Ãà >> §¶ ²j·¢ Ãh±êk£ ¦ŠÃ¢à >> ©oâ°Â« ÃkiìþÃ^çÃyÃpj÷¦¡Ã¬ 櫶 ,zÃk¹ÃnÂëÿN >> §â)à iº.¶ÃbµÃoâ°Â« >> ÃayïŠÃž²ÃZ¶Ã^ÃÃýêìy«-â â¹ â Ã^êÃrâ°ÃÅ >> {š¶*'²â¡Ãâ¦Ã¤Ã2âÂâ ÃZµºÃjK >> µ¦ZÃ+-©ìŠÃ¨ž+'¢à ¢â¡Z¦šèÃ)š¶*'ý8^e¬b²à >> ©m©ìŠÃ¨ž)ãyÃl¶ ¬Š>> Ãâ¢Ã©Ã® ¢žÃ-â¦Ã§ ¾+rý8^½ªâ¢ë)®Š^®Ãž²â¡Ãâ¦Ã§ >> ¾+rþfÂz¸šâö§v ¨â¢Ã«kÃø§r[ >> Å x0â¦Â«oâ°Â«,¶+\â Ã^q«â·+.ÂöÅzÃh ëaz¶§w ^ÂæŸ}ç-² >> 0¶ ²('jW§z¸2¦º)j >> ÂzÃa®⹠â Ã^q«â·(§jY]Š·Å¶*'³ôÂz÷ŽŸÃûÿm5ãŸ÷à >> ÿ-ç²»+§Ãº-{ÿÃâ¹Ã´Âz÷ÿ >> ëH-©ÃD»!¢é]uê^ é¢{ay쵩Ã{ûâjâ ²,áû"âv¥¾&Å¡ >> Ã'vÃbµÃbž âkò ¢yruê^ >> Ã'qªZr+h®û ¾&ÿŠÃaz·Âº¹éjÃe¢Šej¸ ®à ÂæÂzV« >> è§vç-jw >> ÿðèzÃÂ~+bžÃ6äf鱪iâ' ¶*'ÿð¨ºWr¢æ ¾+ à ÂÅ >> Ãay·§yø¡÷ ±ÃZ à >> ±Ãÿý8ZžKÿ-çÿÿÿìµëÃÃè«ÿ ¢®ÃÿŠâå£ >> âoÿÿý´à >> ýÿ¿ÿÿÿÿëýuÿÿÿÿÿÿÿÿÿý8^²ÃÂzg§¶+ jà >> ¢{az'^jÃZµ[,²ÃÂr § úèâ¢Â¼Â© >> jÃÿýéiâµl²øš±©à %l²øš²+ uê®jÃÿN >> ¢uæÅ¢w%¹Ã¦ >> Âÿ÷±¦XÅÅ ÃâjÃ(®·¬¦â°ÃÅ x-¢à ©h®à >> ©ij*éìŠÃ¨žÃ«zz-ÿùÃqë,j¼ÿÿÿÿJï{ÿÿ: ïý´à >> ÿã ü·žÃ쮟 >> èµïÿÿôÂÅ Ã!Å x,â â¹Â¥u·§yç^w ^ž ÃÂçÃÂéÃzâ¢Z >> ç!jx ÿÿÃvâ°Ã¨Â¶Ièà >> rÃâ¹Â¬j']¢z- ç j|¦+\â )à ¾&¬ÿÿÃéöâ¡%j¸ŸÃlª¹ë-Å >> â°Ã±·¥£ >> ÿÿùžj{,¶+\â )à ¾&¬ÿùžj{,Å >> Ãâøš³ÿ¦y©ì¦â¹"¶+ò('j_ÿâ¢Ã¦Â§Â²w jïzà >> ©ÿÿýÿ:yr¢{-Å Ã!Å >> x/â°Â«Ã¿Ã¿Ã¿Â¾Ã»Ã¯Â¾Ã»Ã¯Â¾Ã»Ã¯Â¾Ã»Ã¯Ã¿Ã»Ã¯Â¾Ã»Ã¯Â¾Ã»Ã¯Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¶Ã¼ >> ey«-· >> ,¶+\â )à >> ¾&¬ÿÿÿÿÿþûï¾ûï¾ûï¾ûïÿûï¾ûï¾ûïÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿà >> ¢·šr >> -®ç-º·ÿà ÂÅ ÃazŠòmèb ÃÃâ¦Â«b³*.®·Å¢iž >> ÃÂÅ â°Ã¢»-Å Ã!Å >> x/â°Â«-®ç-º·¢žÃ^ÃââºÂ¦Ã-®ç-º·ÿÿÿÿÿÿÿ-çÿþWž®+\â¦Ã¬Ã¿yªÃâ >> X§âù÷ÿÿÿm5ãÿ >> ïÿÿÿÿ÷ÿ^ÿÿÿÿÿÿÿÿÿÿÿÿÿ6â¹-Å Ã!Å x/â°Â« ÂéÃyà >> ýh^ÂçbvÃb²'^j >> ²ëµçÿÿÿÿÿÿÿÿÿÿüêââ)Ãâ챨 >> ÿÿÿüZèâºÃ²Ã{+²º >> >> ÿÿôžžÃÃjëu¬ÿIêmzfïNÿÃMxãý¹èºâºÃ¿Ã¨h£÷(âºÃ¸+¢ê >> ²/åŠÃÿÿÿÿÿÿÃÅ ÃZÂÃb½ë >> Âëâ{ âºâ¢Ã¦Âÿÿÿþ m§ÿÿà ÿ~·žâ+-³ú+Æö«r >> ¯zÃìâ¹Ã¹b²Ãÿÿÿÿÿó¥wúkÅ Å Ã >> âºÂ§{¯öÃMÿâ+-j·!Š÷¬j·¯â°Ã¬ nWš·ÿÿÿøm¶Ÿÿÿ >> 0þ«%þwÂÿ >> ú¶âºÃ¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿Ã¿6â¹Ã¢Â®Ã« ¢éÃÅ >> {aŠÞ²à {ÿÿÿð¡yà u¼â¬Toðà þ >> âoÿÿõ^®Ã¨Ÿý´à ôÿŽúçõb®ë >> jÃâºjÃÿãMyÿÃzÃô^â¢Ã¦Â¬x6Â{ý=ÿN à >> >> ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿôèº{.nÃ+â°Â·Å¸Â®â°Â¬â¹Ã¹b²Ãÿÿû"þX¬·úê笷÷ëyéb²Ãÿ¢¸0Å >> Ãÿº{.nÃ+â°Â·Ã¿Å {ay+⺠>> ç-~'Â¥wÿÿÿÿè®à vh§ŠÃ^¯*.®g¦mêìâ *_®â°Å¡Ãæéj >> ÿââ¹hÿÿÿâ Ãiÿÿðà >> ÃÂ祊ÃlþŠà ÿ âºÂ¥Â¨ þÃÿâ+-ÿÿÿÿñh® >> ¥§ÿÿþÃÿâ+-þ·ª¹ë-ýúÃzX¦Ãè® "¶ >> ázZÿŠ{ay+⺠ç-~'Â¥wÿÿÿÿÿÿòâ²Ãè®é¢±§ >> zÃ"nWš·ÿÿþ m§ÿÿµç!þ >> èºâºÃ¿Ã¨h£÷(âºÃ¸+¢ê ²/åŠÃÿÿÿÿü¸¬µªÃâ >> +ñªÃ¾'°i¹^jÃÿÿøm¶Ÿÿÿ 0ýúÃzX¦Ãè® >> ÃÂÃb½ë?²/åŠÃÿÿÿÿüé]þšâ¢»h&éÃëý´Ã_åŠ>> ÃZÂÃb½ë Âëâ{ âºâ¢Ã¦Âÿÿÿâ Ãiÿÿðà >> >> ê²_çzÃðo«i»ÿÿÿÿÿÿÿÿÿÿÿÿôÂz÷âz*ÿüÆÃ,åÿ,°ÿÿ^|Ãjà >> ÃèŠ{Vk/ÿ1-øëÃÿý >> §£óUóÃvÃÿ}÷Ãÿà ÿŠâå£ Ã¢oÿÿÿûïŸö÷ÃøÃ~ >> >> ºÃ§zÃÿÿÿ:ëþ»çþ:ÃDèâ_ÃÂçÿÿþôïþüÃý}çQZÃÿÿü >> erâ°Ãz{l >> Å r®(!·÷ÿÃMw ðK9 Ã,/ÃâTbâ lEë ®÷ ÿÿÃâ + >> þf¢âf²râ°Ãj)âwâuéÃâ°Â©fjëâ°Â©Ã¿Ã¿Ã² >> Ãâ¹Å¡Âéè¶Ã^Å {^ à Âç"¦'§·úey« >> uë-®ÅÅ¡âZÃrŠóÿà Ãè¶'ò¶ >> >> ¬zw^¯ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿôèº{.nÃ+â°Â·Å¸Â®â°Â¬â¹Ã¹b²ÃÿþÃÿâ+-þ·ª¹ë-ýúÃzX¦Ãè® >> "¶ >> îžÃâºÂ±ÃâmïâžÃ^JæãyÃ_â°Ã©]ÿÿÿ¢»hiâž+-z¼¨º¹žâ¢Â·Â«Â² >> ©~º&k âºÂ¥Â¨ þ >> -£ÿÿâ Ãiÿÿðà ÃÂ祊ÃlþŠà ÿ âºÂ¥Â¨ þÃÿâ+-ÿÿÿ >> ŠázZÿÿû"þX¬·úê笷÷ëyéb²Ãÿ¢¸0Å >> Ãÿâ¦Ã©iþ)Ãâ¦Ã¤Â®n7ŵøžâ¢Ãÿÿÿÿ.+-~Šîš+ >> qì²&Ã¥y«ÿÿøm¶ŸÿþÃÅâ¡Ã¸+¢êlÿ&¡¢ âoà >> ®â¹Â©Ã¾Ãÿâ+-ÿÿÿ.+-j·!Š÷¬j·¯â°Ã¬ >> nWš·ÿÿâ Ãiÿÿðà ÃÂ祊ÃlþŠà ýªÃâ >> +óû"þX¬·ÿÿüé]þšâ¢»h&éÃëý´Ã_åŠÃZÂÃb½ë >> Âëâ{ âºâ¢Ã¦Âÿÿá¶Ãÿÿü0Ãú¬âù÷ü >> êÃnÿÿÿÿôÂz÷âz*Ã< Ã_òà ^|Ãjà ÃèŠ{Vk# >> ÃŽ¼õ §£óUóÃvÃÿ}÷Ã0Ãø©nZ1ýÃ&ÿ¾ùÿo}ÿ ·è >> ¬Šw¬³ÿ:ëþ»çþ:ÃDèâ_ÃÂçÿïNÿïÃÿÃÃu >> ¬@âW(žÃ§¶Ã¨§*ââ ÿsý´Ãr ³âü²Ãü >> eF(!¶Ã^±êïyÃÃâ + >> >> þf¢âf²râ°Ãj)âwâuéÃâ°Â©fjëâ°Â©Ã¿!ü¨¹ªÃžâ¹mâ¦Ã¨Â§ÂµÃ©ÃyÃÃr*bz{ÿ¦Wš±ç^²ÃèéeÂç(Âà >> Ãè¶'ò¶ >> >> ¬zw^¯ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿNâ¹Â§Â²Ã¦Ã¬r¸âºyúèšÃÿâ+-þÃÿâ+-þ·ª¹ë-ýúÃzX¦Ãè® >> "¶ >> îžÃâºÂ±ÃâmïâžÃ^JæãyÃ_â°Ã©]¢»hiâž+-z¼¨º¹žâ¢Â·Â«Â² >> ©~º&k âºÂ¥Â¨ þ >> -£øm¶Ÿÿÿ 0ýúÃzX¦Ãè® ðyºZ ïìâ¹Ã¹b²Ãh® >> ¥§û"þX¬·úê笷÷ëyéb²Ãÿ¢¸0Å >> Ãÿâ¦Ã©iþ)Ãâ¦Ã¤Â®n7ŵøžâ¢Ãâ²Ãè®é¢±§ >> zÃ"nWš·øm¶ŸÿþÃÅâ¡Ã¸+¢êlÿ&¡¢ âoà >> ®â¹Â©Ã¾Ãÿâ+-.+-j·!Š÷¬j·¯â°Ã¬ nWš·øm¶Ÿÿÿ >> 0ýúÃzX¦Ãè® ÃÂÃb½ë?²/åŠÃNâ¢Ãé®*+¶ân >> îÿÃM5þX¬µªÃâ >> +ñªÃ¾'°i¹^jÃá¶Ãÿÿü0Ãú¬âù÷ü êÃn >> ------------------------------------------------------------------ >> To unsubscribe from si-list: >> si-list-request@xxxxxxxxxxxxx >> <mailto: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 >> <mailto:si-list-request@xxxxxxxxxxxxx> with 'help' in the Subject >> field >> >> >> List forum is accessible at: >> http://tech.groups.yahoo.com/group/si-list >> >> List archives are viewable at: >> //www.freelists.org/archives/si-list >> >> Old (prior to June 6, 2001) list archives are viewable at: >> http://www.qsl.net/wb6tpu >> >> > > > -- > Steve Weir > IPBLOX, LLC > 1580 Grand Point Way > MS 34689 > Reno, NV 89523-9998 > www.ipblox.com > > (775) 299-4236 Business > (866) 675-4630 Toll-free > (707) 780-1951 Fax > > All contents Copyright (c)2013 IPBLOX, LLC. All Rights Reserved. > This e-mail may contain confidential material. > If you are not the intended recipient, please destroy all records > and notify the sender. > > No virus found in this message. > Checked by AVG - www.avg.com <http://www.avg.com> > Version: 2014.0.4765 / Virus Database: 4015/8171 - Release Date: 09/07/14 > -- Steve Weir IPBLOX, LLC 1580 Grand Point Way MS 34689 Reno, NV 89523-9998 www.ipblox.com (775) 299-4236 Business (866) 675-4630 Toll-free (707) 780-1951 Fax All contents Copyright (c)2013 IPBLOX, LLC. All Rights Reserved. This e-mail may contain confidential material. If you are not the intended recipient, please destroy all records and notify the sender. ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu