Steve, 1. I thought a hard disk drive is a type of product which can be susceptible to magnetic fields. If yes, then the test apply. 2. Even that your equipment is connected to DC voltage, I think the intention of the -4-8 standard is the environmental magnetic field frequency. So If your equipment is installed in a 50Hz power station, you indeed have magnetic fields and therefore do you have to carry out the test with the given frequency 50Hz.
Any PC manufactures out there who agrees ? Best regards Amund Westin, Oslo/Norway -----Opprinnelig melding----- Fra: [email protected] [mailto:[email protected]]På vegne av Yow, Steve (IndSys, GEFanuc, NA) Sendt: 16. november 2001 20:22 Til: 'EMC Post' Emne: Magnetic Field and Hard Drives Group, If I am self-certifying and using EN61000-6-2 generic, would a Hard Disk Drive be considered as needing testing to EN61000-4-8? If yes, my equipment is 24vdc powered and the -6-2 standard states testing at the frequencies appropriate to the power supply frequency. So what frequency is DC? (dumb question, right?) Any suggestions.? It seems that the test is really aimed at CRTs which can be impacted by magnetic fields. Anyone with experience that would like to share would be appreciated. Regards, STEVE ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
