I am confused. What's the problem? If we (the EMC Community) have faith in Plug & Play (as the new FCC process is dubbed) then you should be able to buy ANY FCC logoed PC and pass.
-----Original Message----- From: Nathan Belsher [mailto:[email protected]] Sent: Friday, March 05, 1999 6:45 AM To: [email protected]; [email protected] Subject: RE: Seeking PCs that Pass CISPR Eric, I understand your dilemma. Having been on both sides of the fence of this issue I must say it can be a sticky issue. At the very least it can be very time consuming testing various machines to get a quiet one. Here is my current experience and my recommendation from past experience. I have just recently finished another round of testing for FCC, CISPR, BELLCORE, and EN50082-1 on a system that has gone through this testing several times as I do my work on ASDL modems. I have had better than 4 dbuv margin on my DELL OPTIPLEX GXPRO 200 MHz. Pentium PRO. Only the usual problem of having to reseat the cover has ever been a problem for us. I read Randy Flinders comments and he has some merit. Randy has had a lot of pc testing himself on the West coast. Here is my recommendation for power users such as yourself. Call up the EMC department at your friendly PC manufacturer. Tell them you buy several systems a year for EMC testing. Ask for their current recommendation of a system to meet your requirements. Ask them if they will do a courtesy audit of the system you buy before you get it and verify it meets the required standards particularly radiated emissions. You can place the order through regular sales channels and have it shipped to the EMC engineering department where they test it as an audit test and then ship it on to you with the complimentary data package. This may add about one month to your procurement cycle but it gets positive results. This is the only way I know to be sure you get an EMC compliant system. Nathan Belsher NORTEL NETWORKS Senior EMC Engineer Phone: (919)-991-2769 ESN:351-2769 FAX: (919)-991-8724 E-Mail: [email protected] -----Original Message----- From: [email protected] [SMTP:[email protected]] Sent: Wednesday, March 03, 1999 6:11 PM To: [email protected] Subject: Seeking PCs that Pass CISPR Colleagues, My (formerly) preferred vendor of Intel based personal computer systems, used for CISPR-11/22 and immunity testing of our boards and peripherals, are lately having emissions up to the Class A limit fresh out of the box - without any peripherals attached. So I must query the List Members for experience-based suggestions for make and model of a passing system that I can buy here in the USA. I need Pentium II equivalent PCI/ISA systems that pass Class A with at least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis for most of a year. Systems that can pass EN 50082-1:1998 (or EN 61326-1:1998) would be nice but I suspect few, if any, are available. We buy about 4 new machines each year as they wear out. Please don't suggest that I complain to the PC vendor since I really don't have time to spend on the matter. I've already traded our newest PC to another department that doesn't care about EMC in exchange for an older compliant PC. I just need a long-term solution. Most importantly, please send your recommendations direct to me to minimize clutter on the list. Unless you specify not to, I'll post a summary of all comments to the list since I believe others are equally interested in the results. Regards and Thanks In Advance, Eric Lifsey Compliance Engineer/Manager National Instruments --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
