Hello Ed, 1) The latest European version of the standard is BS EN 61000-4-6 : 1996 incorporating Amendments 1, 2 and 3.and Corrigendum 1. 2) This test is not usually applicable to automotive EMC. 3) Figure 2a of the standard should be treated as a theoretical representation of the fields created by the test, as mentioned in section 3. The actual test set-up is illustrated in figures 2, 5b, 6, 10, A.6, and A.7. 4) As specified in section 6.4 of the standard, you will have to undertake a calibration at the required injection level, and then apply this calibrated level to the relevant cable. The standard is quite confusing, so good luck. Jon ----- Original Message ----- From: Price, Ed <mailto:[email protected]> To: [email protected] Sent: Tuesday, February 21, 2006 3:12 PM Subject: EN61000-4-6:1996
I have been asked to do a Conducted Immunity test per BS EN61000-4-6:1996 on a gadget that mounts on the inside wall of a bus (and is accessible to the passengers). First, I think this isn't the latest version of this specification, but it is what the customer requested. This device has a completely non-conductive outer case. The only conductive point is on it's rear, where a 15-pin "D" connector supplies vehicle power through a shielded, twisted-pair cable. The customer asked for a "direct connection" test, as shown in Figure 2a, with a test level of 20 Volts. It seems to me that I will need to be able to generate about 100 Vpp and 200 Watts from my RF amplifier. Does the requested test level seem a bit extreme for a passenger bus application? Further, I don't understand how to measure the voltage Uo. Is this the voltage across the output of my 50-ohm RF source, or the voltage from the test specimen injection point to ground? And finally, Figure 2a implies a conductive test specimen case. How do you do this test for a non-conductive case, where the only conductive surface available is the length of the shielded power cable? I'd appreciate any comments or guidance. Regards, Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
