Hi Geoff, The criteria for particular conditions is section 7.2 in EN55024. The generic immunity spec EN50082-1 is similar to general performance criteria of section 7.1 in EN55024. Annex A criteria A is for Radiated and Conducted RF immunity only (not for ESD, EFT or Surges). Tables 1 to 4 specify the pass/fail criteria(A,B or C) against the Annex A Particular performance criteria. Measurement method 1 needs a calibrated artificial ear but Measurement method 2 has the accoustic sound level measured using an external microphone. I'm not sure how many people are following the particular test methods in the Annex. The standards are effective from 1st of July 2001. I will be interested to know from people testing to these Annexures.
Best Regards, Praveen -----Original Message----- From: Geoff Lister [mailto:[email protected]] Sent: Tuesday, 23 January 2001 11:00 PM To: Praveen Rao Cc: '[email protected]' Subject: RE: EN 55024 particular conditions--Re-sending Praveen, The criteria A, B & C have been present for some time in the generic immunity spec EN50082-1. The body of EN55024 covers the detail of the criteria, in particular section 7.1, and tables 1 to 4 list the required performance criteria against each test. Annex A covers the audio interface and defines the acceptable limits for criterion A with respect to RF immunity. The verification of these levels is going to be a challenge for many of us over the next few months. Precision artificial ears tend to be designed for benign acoustic chambers and not for 3V/m RF. I would suggest that you contact your regular test house and discuss it with them. Best wishes, Geoff Lister Senior Engineer Motion Media Technology Ltd., Bristol, UK. http://www.motion-media.com -----Original Message----- From: Praveen Rao [mailto:[email protected]] Sent: 23 January 2001 01:10 To: '[email protected]' Subject: EN 55024 particular conditions--Re-sending -----Original Message----- From: Praveen Rao Sent: Friday, 19 January 2001 4:59 PM To: [email protected] Subject: EN 55024 particular conditions Dear Members, For immunity tests in accordance with EN 55024 : 1998, 'Telecommunications terminal equipment' (analogue and digital), have particulat test conditions in Annex A of the standard. It is highlighted in the standard (section 7.2) that the criteria given in Annex takes precedence over the general performance criteria. There are two methods of measurement in Annex A for radiated and conducted immunity tests. Anyone familiar with these measurements ? comments please. What will be criteria for other immunity tests like the ESD, EFT, etc. ? Criteria B and C are clear but criteria A is only for radiated and conducted immunity tests. Thanks for your responses. Praveen ------------------------------------------- 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] --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.227 / Virus Database: 109 - Release Date: 17/01/01 ------------------------------------------- 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]
