Earl, Thanks. Is it possible to detect the problem by INTEL's Verification persons before shipping the product to customers? Recall is a very tough decision for any company to make. I understand that intermittent problems are difficult to screen. But we may use temperature cycling, or spot hot/cool to precipitate some latent EMC/SI problems and then detect them as early as during design stage, if the design engineer is not sure about the noise budget he used or hard to compromise with other margins.
-barry ---------- On Mon, 15 May 2000, "Morse, Earl" wrote: > > Barry, > > Probably a ground bounce problem. If Intel violated or marginally violated > its noise budget then it could cause these types of errors. ..... > > Earl Morse > Portable Division EMC Design > Compaq Computer Corporation > Phone: 281.927.3607 > Pager: 713.717.0824 > Fax: 281.927.3654 > Email: [email protected] > > Emissions Control Laboratory > 10320 Rodgers Road, EC106 > Houst, TX 77070 > > > > -----Original Message----- > From: Barry Ma [mailto:[email protected]] > Sent: Wednesday, May 10, 2000 6:13 PM > To: EMC-PSTC > Subject: Chip noise halts Intel 820 motherboard > > > > http://dailynews.yahoo.com/h/zd/20000510/tc/chip_noise_halts_intel_820_production_1.html > > INTEL will replace motherboards using its 820 chip set due to noise caused > by simultaneous switching of signals. > ------------ > > Can anybody be more specific or just make a speculation by using EMC > language? > > Another question is irrelevant to EMC. I am wondering why it took so long - > five months from field failure report to recreating the problem inside > INTEL? See quotation below: > > First noted in November > "Intel began shipping the MTH last November. The problem was brought to > light by an Intel customer who observed the problem.... Intel followed up on > the report and observed the problem in its own tests earlier this month." > > > > Barry Ma > [email protected] _______________________________________________________________________ Why pay when you don't have to? Get AltaVista Free Internet Access now! http://jump.altavista.com/freeaccess4.go _______________________________________________________________________ ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
