Steve: I don't have a copy of EN60945 with me but there is a host of immunity issues that come up in a radar environment both from a conducted and radiated EMI perspective. Most current commercial specs concerning computer equipment only deal with radiated emissions and immunity up to one gigahertz. Your suspected s-band and x-band culprits operate well above these frequencies at 2-4 GHz and 8-12 GHz respectively.
In a previous job, we had to take some extreme measures to mitigate radar interference. Fortunately, we made field measurements to characterize the electromagnetic environment before an overall EMC plan was drawn up to deal with the potential EMI hazards. All of this was done as part of the system integration effort prior to installation. There is a specification MIL-STD-461 that defines radiated susceptibility limits that covers s-band and x-band frequencies but it's intended for military applications. There should be some test labs in the U.S. that have immunity testing capabilities at the radar frequencies you're concerned about. Now, to harden your product is another matter... -- ------------------------------------------------------------------------ Daniel Kwok, P.Eng. Principal Engineer Intetron Consulting, Inc. Vancouver, Canada Phone (604) 432-9874 Email [email protected] Web http://www.intetron.com "Yow, Steve (IndSys, GEFanuc, NA)" wrote: > > Colleagues, > We have an industrial computer that is sold to ships, oil rigs, etc. - > places where ship's radar can interfere with proper operation. Is there an > immunity standard we can test to that would help us investigate this type of > interference? I have an old copy of EN60945/IEC945, and it dismisses any > radar interactions, but we've seen these interactions. The sites in question > may have S and X band radars. > > Also, any recommendations for testing labs (with the usual disclaimers) that > can perform these type of tests? > Thanks in advance - > > STEVE YOW > GE Fanuc Automation > > > ------------------------------------------- > 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.
