RE: Modulations during Radiated Immunity Tests
Krzysztof The medical device standards EN 60601-1-2, and the US FDA regulations require the use of a modulation frequency that is representative of the function being measured. (i.e. respiration, heart rate, brain waves, etc.) This makes for an interesting test as the frequencies involved are usually a range that has to be swept for each Carrier frequency step. John Mowbray EMC Engineer NCR Canada -Original Message- From: krzys...@polbox.com [SMTP:krzys...@polbox.com] Sent: Friday, September 24, 1999 6:22 AM To: emc-p...@majordomo.ieee.org Subject: Modulations during Radiated Immunity Tests Importance: High Dear Group, My matter concerns different kinds of modulation used during radiated immunity tests. For instance: IEC 1000-4-3: 1995 describes 80%-depth Amplitude Modulation with a 1kHz sinwave, ENV 50204: 1995 describes keyed carrier modulation (on-off, duty cycle 50%). My question is: do you know any standards (international, national, technical documentations, etc.) which describes different kind of modulations than these above (for instance AM with squarewave or Frequency Modulation or other ways of carrier keying) during tests. Would you please give me the number and title of the standards, frequency range, test levels and, of course, parameters of modulation. The second question: do you know any product, product family and other standards which call AM80%1kHz modulation and keyed carrier - cycle duty 50%. Thank you, Krzysztof Sieczkarek Laboratorium Technik Automatycznej Identyfikacji Instytutu Logistyki i Magazynowania Poznan, Poland fax +48 61 8526376 http://www.ilim.poznan.pl/la/index_E.html - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Modulations during Radiated Immunity Tests
Krzysztof, For question 2: EN50082-1:1998 Electromagnetic compatibility - Generic immunity st7andard Part 1. Residential, commercial and light industry and EN50082-2:1995 Electromagnetic compatibility - Generic immunity standard Part 2. Industrial environment Call for both AM80% modulation (over 80-1000MHz) and keyed carrier 50% duty cycle (at 900MHz +/- 5MHz) for the radiated RF immunity tests. Regards, Jeff Bailey EMC Technologist SST - A Division of Woodhead Canada Ltd. Phone: (519) 725 5136 ext. 363 Fax: (519) 725 1515 Email: jbai...@sstech.on.ca Web: www.sstech.on.ca All comments here are my own and do not necessarily express the views of SST. -Original Message- From: krzys...@polbox.com [mailto:krzys...@polbox.com] Sent: Friday, September 24, 1999 6:22 AM To: emc-p...@majordomo.ieee.org Subject: Modulations during Radiated Immunity Tests Importance: High Dear Group, My matter concerns different kinds of modulation used during radiated immunity tests. For instance: IEC 1000-4-3: 1995 describes 80%-depth Amplitude Modulation with a 1kHz sinwave, ENV 50204: 1995 describes keyed carrier modulation (on-off, duty cycle 50%). My question is: do you know any standards (international, national, technical documentations, etc.) which describes different kind of modulations than these above (for instance AM with squarewave or Frequency Modulation or other ways of carrier keying) during tests. Would you please give me the number and title of the standards, frequency range, test levels and, of course, parameters of modulation. The second question: do you know any product, product family and other standards which call AM80%1kHz modulation and keyed carrier - cycle duty 50%. Thank you, Krzysztof Sieczkarek Laboratorium Technik Automatycznej Identyfikacji Instytutu Logistyki i Magazynowania Poznan, Poland fax +48 61 8526376 http://www.ilim.poznan.pl/la/index_E.html - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Modulations during Radiated Immunity Tests
Dear Group, My matter concerns different kinds of modulation used during radiated immunity tests. For instance: IEC 1000-4-3: 1995 describes 80%-depth Amplitude Modulation with a 1kHz sinwave, ENV 50204: 1995 describes keyed carrier modulation (on-off, duty cycle 50%). My question is: do you know any standards (international, national, technical documentations, etc.) which describes different kind of modulations than these above (for instance AM with squarewave or Frequency Modulation or other ways of carrier keying) during tests. Would you please give me the number and title of the standards, frequency range, test levels and, of course, parameters of modulation. The second question: do you know any product, product family and other standards which call AM80%1kHz modulation and keyed carrier - cycle duty 50%. Thank you, Krzysztof Sieczkarek Laboratorium Technik Automatycznej Identyfikacji Instytutu Logistyki i Magazynowania Poznan, Poland fax +48 61 8526376 http://www.ilim.poznan.pl/la/index_E.html - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
