RE: [PSES] BS EN61000-4-3 and calibrated fields.
We have done this at several labs I work for, but it was always just a sanity check to make sure that neither the amplifier nor cables to the antenna had failed. It is totally useless as a function for leveling for commercial immunity measurements. Best regards Brent From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Tuesday, September 27, 2011 8:19 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] BS EN61000-4-3 and calibrated fields. Not to hijack this thread, but why do some test labs setup the Field Probe in the chamber next to the EUT during the test? The measurement with the EUT in the field should be all over the place and would have little value. Am I missing something or are some labs leveling off the Field Probe during testing? From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: Tuesday, September 27, 2011 6:00 AM To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: [PSES] BS EN61000-4-3 and calibrated fields.
Actually it is the best method to use for 61000 – 4 – 3. Leveling with modulation off does take more time, but only by a bit (a couple of seconds per step). The advantage is a more accurate leveling regardless of your modulation For medical devices where the modulation is at 2 Hz, it is almost impossible for a power meter to actually level correctly during the playback process. Best regards, Brent DeWitt PS my apologies for any misspellings or bad grammar. I have a collarbone and I am using Dragon NaturallySpeaking to dictate this. From: Deniz Demirci [mailto:0denizdemi...@gmail.com] Sent: Tuesday, September 27, 2011 8:44 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] BS EN61000-4-3 and calibrated fields. The option a is also acceptable in some standards such as GR-1089-CORE. For each frequency step; The modulation has to be turned off, adjust the level, apply modulation… It is quite time consuming Again, this method is not for EN 61000-4-3 Deniz On Tue, Sep 27, 2011 at 3:59 AM, Ian White (UK) ian.wh...@uk.spiraxsarco.com wrote: Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to LT;emc-p...@ieee.orgGT; All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 LT;emcp...@radiusnorth.netGT; Mike Cantwell LT;mcantw...@ieee.orgGT; For policy questions, send mail to: Jim Bacher LT;j.bac...@ieee.orgGT; David Heald LT;dhe...@gmail.comGT; - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Re: [PSES] BS EN61000-4-3 and calibrated fields.
The option a is also acceptable in some standards such as GR-1089-CORE. For each frequency step; The modulation has to be turned off, adjust the level, apply modulation… It is quite time consuming Again, this method is not for EN 61000-4-3 Deniz On Tue, Sep 27, 2011 at 3:59 AM, Ian White (UK) ian.wh...@uk.spiraxsarco.com wrote: Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to LT;emc-p...@ieee.orgGT; All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 LT;emcp...@radiusnorth.netGT; Mike Cantwell LT;mcantw...@ieee.orgGT; For policy questions, send mail to: Jim Bacher LT;j.bac...@ieee.orgGT; David Heald LT;dhe...@gmail.comGT; - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: BS EN61000-4-3 and calibrated fields.
I asked this just a few days ago when at a lab – this particular tech said it was a “sanity check”. The displayed 3-axis RMS value was close to the V/m setting I requested, but did vary with frequency and polarity, unsurprisingly. Bryce From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Tuesday, September 27, 2011 1:19 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] BS EN61000-4-3 and calibrated fields. Not to hijack this thread, but why do some test labs setup the Field Probe in the chamber next to the EUT during the test? The measurement with the EUT in the field should be all over the place and would have little value. Am I missing something or are some labs leveling off the Field Probe during testing? From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: Tuesday, September 27, 2011 6:00 AM To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Re: [PSES] BS EN61000-4-3 and calibrated fields.
Putting a field probe beside the eut is a function test. This can be used as part of ISO17025 accreditation requirements. John McAuley Sent from my iPhone On 27 Sep 2011, at 21:19, Kunde, Brian brian_ku...@lecotc.com wrote: Not to hijack this thread, but why do some test labs setup the Field Probe in the chamber next to the EUT during the test? The measurement with the EUT in the field should be all over the place and would have little value. Am I missing something or are some labs leveling off the Field Probe during testing? From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: Tuesday, September 27, 2011 6:00 AM To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to mailto:emc-p...@ieee.org emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas mailto:emcp...@radiusnorth.net emcp...@radiusnorth.net Mike Cantwell mailto:mcantw...@ieee.org mcantw...@ieee.org For policy questions, send mail to: Jim Bacher mailto:j.bac...@ieee.org j.bac...@ieee.org David Heald mailto:dhe...@gmail.com dhe...@gmail.com LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to mailto:emc-p...@ieee.org emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas mailto:emcp...@radiusnorth.net emcp...@radiusnorth.net Mike Cantwell mailto:mcantw...@ieee.org mcantw...@ieee.org For policy questions, send mail to: Jim Bacher mailto:j.bac...@ieee.org j.bac...@ieee.org David Heald mailto:dhe...@gmail.com dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the
RE: BS EN61000-4-3 and calibrated fields.
Not to hijack this thread, but why do some test labs setup the Field Probe in the chamber next to the EUT during the test? The measurement with the EUT in the field should be all over the place and would have little value. Am I missing something or are some labs leveling off the Field Probe during testing? From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: Tuesday, September 27, 2011 6:00 AM To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
power line communications filter in the EU
Hi. What is(are) the appropriate standard(s) for a power line communications (installed similar to how a facilities EMI filter would) in the EU? For use in residential and commercial environments. The research I've done does not point to a clear winner. 60939-1 is a close match in scope, but I'm concerned about, within, or associated with, electronic or electrical equipment and machines. This filter is a stand-alone unit, but intended for use with a specific collection of equipment. Seems to meet the 'associated with' criteria. Are there other standards I've missed? Regards, Peter L. Tarver, PE This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
RE: [PSES] EN 60204 - leakage crrrent for permanently wired equipment discussion
Kim et al, Leakage current discussion can go in a couple of directions. Ted E John W give a good, basic understanding as to the fundamental issues. Permanently wired equipment is set up from installation with a reliable earth/ground as that is what is required by the installation rules and competent electrical installers follow these rules to provide protection from current available on exposed conductive parts (code inspectors check on the mechanical installation but do not normally do any test for voltage or current from exposed conductive surfaces). Because of this practice the requirement for residual current in the earth/ground is quite often set at a fraction of the operating current of the equipment (e.g. 5%)in some standards; this current would be available as an electric shock issue if the earth/ground is not reliable. If there is a fault the bonding and earthing/grounding conductors carry the current to earth/ground until the fusing/breaker interrupts the power to the equipment. This system of protection has a good record of providing the needed protection for folks around the equipment while it is operating. As has been mentioned, the advent of electronic switching has confounded the currents in the earthing/grounding system for much equipment. SMPS typically shunt switching impulses to earth/ground; where there is an installation where the earth/ground is not reliably present (usually cord connected equipment) there is a specification for the maximum 'touch current' that is allowed. This limit comes from fundamental research as to the effects of current on the human body; product committees get this fundamental data from IEC 60479 series and adapt it to their application. It is clear that touch current from electronic based equipment is non-sinusoidal and that the peak value of the current must be used to determine acceptability for protection. Some product standards have invoked the measuring circuits and techniques from IEC 60990 to properly make these measurements for some time. These techniques must spread to more product standards as switching electronics are moving into more products. SMPS are being applied in lighting (LED CFL's); variable speed motors are being applied in many applications from industrial motors to household appliances. All of these products need to review their electric shock protection requirements in the light of these fundamental changes in the application of electronics in their equipment. Finally, there may be yet undetermined interaction consequences to using earth/ground as the dumping ground for these residual switching currents. This is not yet explored in any definitive way and the consequences are unknown. This is an opportunity for researchers; this is a warning to equipment manufacturers who may find unexplained operational changes in their equipment and may have to search outside their own equipment for the root cause. To finish up the original discussion, if equipment is installed in a region where more relaxed installation rules could give rise to earthing/grounding which is less reliable then the leakage current (touch current) should be measured and controlled in that installation to minimize the risk of electric shock from the normal operation of the machine. It is not clear to me that any product standards are yet ready to deal with some of these issues. In such cases the liability falls upon the equipment manufacturer and the installation professionals to provide a safe environment. :) br, Pete Peter E Perkins, PE Principal Product Safety Regulatory Consultant Tigard, ORe 97281-3427 503/452-1201fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
RE: Standards
Derek The second edition of EN 61326-1 is about to go to FDIS (IEC) and final vote (CENELEC). The target date for vote launch is 31 Dec 2011. There are various parts to EN 60947. The latest list of EMC standards was published in the OJEU on 24 February 2011. The Commission decides the dates of publications of these lists. The fact that a new RTTED list was published recently suggests there may be a new one on the way for EMC … Best wishes Brian Brian Jones EMC Consultant From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Derek Walton Sent: 27 September 2011 15:00 To: emc-p...@ieee.org Subject: Standards Good day folks, Can anyone tell me if there is a later version of EN61326-1:2006 pending, and ready to be listed in the journal. I'm about to embark a test exercise and I'd like to look ahead even though it may not be required yet. Also, EN60947:2011 is out, but is it harmonized yet? Thanks, Derek Walton - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Re: [PSES] Still on Radiated Immunity
HI Wendy, your chamber size is fine: we have successfully verified chambers smaller than this. I suggest a few things: Don't scrimp on the size of the floor patch. If you are using wood to hold your field probe, change to plastic. Don't let the probe get near any dielectric material. Make sure the probe always stays in the same orientation If you are trying to calibrate at low fields: don't. You must make sure your field probes give sensible numbers at all times. Make sure your power meters and amplifiers are linear over the calibration range. Make sure you are allowing the power meter time to settle. Use the smallest antenna that will cover your frequency range. Offset the antenna and UFP a little off centre if you can, a slight angle helps. Use good software. Now, if these dont work, you might need outside help. Sincerely, Derek Walton L F Research. -Original Message- From: WNya wendy...@yahoo.com To: Julian Jones ju...@hursley-emc.co.uk Cc: Charlie Blackham emcp...@sulisconsultants.com; EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tue, Sep 27, 2011 9:48 am Subject: Re: [PSES] Still on Radiated Immunity I believe my chamber is 7m long, 4m wide and 4m high (externally dimensions). It is a partial lined TDK chamber. Sent from Wendy.Nya iPhone On Sep 27, 2011, at 10:33 PM, Julian Jones ju...@hursley-emc.co.uk wrote: I haven't had any luck using a chamber less than 7x5x4 m Julian Jones 07787 523607 On 27 Sep 2011, at 15:05, Charlie Blackham mailto:emcp...@sulisconsultants.com emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham mailto:emcp...@sulisconsultants.com emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to mailto:emc-p...@ieee.org emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators:
Re: Still on Radiated Immunity
More cones and ferrite tiles, lots more!! Attitude is Mind over Matter. If you don't Mind, it doesn't Matter... This email has been displayed using 100% recycled electrons and 100% pure virgin photons. From: WNya wendy...@yahoo.com To: EMC-PSTC EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tuesday, September 27, 2011 9:28 AM Subject: Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: EN 60204
I agree that the issue still exists. As I indicated, there is less of a need to address leakage current. I didn't indicate that there was no issue. The world of machinery is full of large induction motors requiring power factor correction, and variable frequency drives requiring line filtering. There are requirements of industry that result in capacitors from line to ground, and therefore significant current shunted into the ground connection. The potential leakage currents are high and the consequences of contact with an improperly grounded system are severe. However, industry in general has a rather good track record of preventing this type of injury. I will grant that there are plenty of instances of faulty installations, and there are injuries and fatalities. But there is a difference between the industrial installations and residential installation. In industrial installations, grounded system are the rule and faulty grounds represent a fault that has occurred through improper installation or maintenance. At least in the United States, there are plenty of residential installation that were wired as two-wire ungrounded systems. The use of a high leakage current product on one of these systems can have disastrous consequences, and the LVD which covers products for this environment must address leakage current. The Machinery Directive addresses the risk of leakage current through installation requirements including instructional safeguards. It assumes that machinery will be installed by trained or instructed personnel. The LVD assumes laymen will be connecting the equipment and as such has the limits and testing requirements for leakage current. Even then, there are exceptions. IEC 60950-1 does not have specific leakage current limits for products that are permanently connected or that have an industrial locking plug. The connection type is such that the product will either be installed by trained personnel or connected to an outlet that, if installed properly, has a ground connection. For those interested in seeing how things can go wrong in commercial and industrial installation, I recommend Electrical Construction and Maintenance magazine's Illustrated Catastrophes column. http://ecmweb.com/nec/illustrated_catastrophes/ The magazine also has a forensic column where you can find specific cases of electrocutions, including details on the faults leading up to accidents. There isn't a specific menu option or link at the web site, but you can find the articles by typing case of the into the search box. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. All information in this e-mail is open to debate and should not be used as guidance in matters of prodcuct testing or certification. Your mileage may vary. Results are not necessarily typical. Limit one coupon per customer. -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Monday, September 26, 2011 12:06 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: EN 60204 In message e9c52f9e77c43c49a56a22691b3680be117...@tk5ex14mbxc301.redmond.corp.micro soft.com, dated Mon, 26 Sep 2011, Ted Eckert ted.eck...@microsoft.com writes: As such, there may not be as much of a need to address leakage current under the Machinery Directive. I can understand your reasoning, but since excessive leakage is one of those faults that can persist undetected until someone gets a severe electric shock, I think it does need to be addressed. There is also an in-situ EMC issue: leakage current creates magnetic fields that are not often counteracted by those of an adjacent conductor carrying the same current in the opposite direction. I had experience of this in a graphics workshop where current in the armour of an under-floor cable caused CRT displays to jitter vertically by about 1 mm, causing sever eye-strain. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK When I point to a star, please look at the star, not my finger. The star will be more interesting. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:
Re: [PSES] Still (more) on Radiated Immunity
The partial illumination option does not exist below 1GHz unless you have a product larger than 1.5m x 1.5m, in which case the uniform field must be a minium 1.5x1.5 size. If you choose to use a smaller uniform field below 1GHz, then the EUT must reside fully within the uniform field dimensions. (Section 6.2, table 2). Above 1GHz this limitation does not exist, partial illumination with a smaller UF is allowed. There are some other subtle differences in the standard regarding 1GHz and 1GHz as well, such as the 3% of frequencies can be above 6dB but below 10dB allowance, below 1GHz. As far as tricks/tweeks, it depends on the particular problem and the frequency where the problem occurs. If absorber performance or chamber size (small) is a problem, moving the antenna closer to the UF will help as long as the beamwidth is not an issue (usually not too much of an issue with a biconilog antenna). The further the antenna is from the UF, the less difference between direct/indirect signal paths and the more effect reflections will have on uniformity. FWIW, we have recently been trying to get our old compact chamber to perform above 1GHz. It performed well up to 1GHz with just the ferrite tiles in place. We added different types of cones to the walls, ceiling and floor and got it to perform well above 1GHz. However, those same cones screwed up the performance below 1GHz, so we are now in the process of trying movable panels. I had been told a long time ago that the cones need to be matched to the tile, maybe that is what I am seeing, but I'm trying to work with the cones that I already have available. Bob R. --- On Tue, 9/27/11, don_borow...@selinc.com don_borow...@selinc.com wrote: From: don_borow...@selinc.com don_borow...@selinc.com Subject: Re: [PSES] Still (more) on Radiated Immunity To: emc-p...@ieee.org Cc: WNya wendy...@yahoo.com Date: Tuesday, September 27, 2011, 10:58 AM The requirement is 75% of the points you are using. So for a UFA using 12 points, you can still eliminate 3 of the 12 points when determining if you have a uniform field. The only exception to the 75% rule is for 4 points, where all the points must be with the 6 dB variance limit BTW, there is also the option of partial illumination when the UFA does not cover the whole product. It takes multiple runs to test the product fully, but gets the job done. Donald Borowski Schweitzer Engineering Labs Pullman, WA From: WNya wendy...@yahoo.com http //us.mc11.mail.yahoo.com/mc/compose?to=wendy...@yahoo.com To: Charlie Blackham emcp...@sulisconsultants.com http://us.mc11.mail.yahoo.com/mc/compose?to=emcp...@sulisconsultants.com Cc: EMC-PSTC@LISTSERV.IEEE.ORG ttp://us.mc11.mail.yahoo.com/mc/compose?to=EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG http://us. c11.mail.yahoo.com/mc/compose?to=EMC-PSTC@LISTSERV.IEEE.ORG Date: 09/27/2011 07:46 AM Subject:Re: [PSES] Still on Radiated Immunity Sent by:emc-p...@ieee.org htt ://us.mc11.mail.yahoo.com/mc/compose?to=emc-p...@ieee.org Hi Charlie, I can, at best, eliminate the top rows. My EUT is small but it is tested as a floor standing device, mounted on a wooden structure. Does this means the FUM requirement is 75% of these 12points? Or is it 100% of these 12points? Sent from Wendy.Nya iPhone On Sep 27, 2011, at 10:18 PM, Charlie Blackham emcp...@sulisconsultants.com http:// s.mc11.mail.yahoo.com/mc/compose?to=emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com http://us.mc11.mail.yahoo.com/mc/compose?to=wendy...@yahoo.com ] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: EMC-PSTC@LISTSERV.IEEE.ORG htt ://us.mc11.mail.yahoo.com/mc/compose?to=EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com http: /us.mc11.mail.yahoo.com/mc/compose?to=emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya
RE: [PSES] Still on Radiated Immunity
Are you having problems in vertical or horizontal calibration? If one is OK and the other is not then it could be an antenna balance issue. Best regards John www.cei.ie john.mcau...@cei.ie * DISCLAIMER: The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorised. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Still (more) on Radiated Immunity
The requirement is 75% of the points you are using. So for a UFA using 12 points, you can still eliminate 3 of the 12 points when determining if you have a uniform field. The only exception to the 75% rule is for 4 points, where all the points must be with the 6 dB variance limit BTW, there is also the option of partial illumination when the UFA does not cover the whole product. It takes multiple runs to test the product fully, but gets the job done. Donald Borowski Schweitzer Engineering Labs Pullman, WA From: WNya wendy...@yahoo.com To: Charlie Blackham emcp...@sulisconsultants.com Cc: EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG List-Post: emc-pstc@listserv.ieee.org Date: 09/27/2011 07:46 AM Subject:Re: [PSES] Still on Radiated Immunity Sent by:emc-p...@ieee.org Hi Charlie, I can, at best, eliminate the top rows. My EUT is small but it is tested as a floor standing device, mounted on a wooden structure. Does this means the FUM requirement is 75% of these 12points? Or is it 100% of these 12points? Sent from Wendy.Nya iPhone On Sep 27, 2011, at 10:18 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and
Re: [PSES] Still on Radiated Immunity
I believe my chamber is 7m long, 4m wide and 4m high (externally dimensions). It is a partial lined TDK chamber. Sent from Wendy.Nya iPhone On Sep 27, 2011, at 10:33 PM, Julian Jones ju...@hursley-emc.co.uk wrote: I haven't had any luck using a chamber less than 7x5x4 m Julian Jones 07787 523607 On 27 Sep 2011, at 15:05, Charlie Blackham mailto:emcp...@sulisconsultants.com emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham mailto:emcp...@sulisconsultants.com emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to mailto:emc-p...@ieee.org emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas mailto:emcp...@radiusnorth.net emcp...@radiusnorth.net Mike Cantwell mailto:mcantw...@ieee.org mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: mailto:j.bac...@ieee.org j.bac...@ieee.org David Heald: mailto:dhe...@gmail.com dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to mailto:emc-p...@ieee.org emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/
Re: [PSES] Still on Radiated Immunity
Hi Charlie, I can, at best, eliminate the top rows. My EUT is small but it is tested as a floor standing device, mounted on a wooden structure. Does this means the FUM requirement is 75% of these 12points? Or is it 100% of these 12points? Sent from Wendy.Nya iPhone On Sep 27, 2011, at 10:18 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Still on Radiated Immunity
I haven't had any luck using a chamber less than 7x5x4 m Julian Jones 07787 523607 On 27 Sep 2011, at 15:05, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [ mailto:wendy...@yahoo.com mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For
RE: [PSES] Still on Radiated Immunity
Wendy Have you considered a smaller one? - you can use smaller UFA if EUT size permits. Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 15:10 To: Charlie Blackham Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Still on Radiated Immunity The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Still on Radiated Immunity
The UFA is as per the standard, 1.5x1.5m, 0.8m above GRP Sent from Wendy.Nya iPhone On Sep 27, 2011, at 9:44 PM, Charlie Blackham emcp...@sulisconsultants.com wrote: Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Standards
Good day folks, Can anyone tell me if there is a later version of EN61326-1:2006 pending, and ready to be listed in the journal. I'm about to embark a test exercise and I'd like to look ahead even though it may not be required yet. Also, EN60947:2011 is out, but is it harmonized yet? Thanks, Derek Walton - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: [PSES] Still on Radiated Immunity
Wendy What size UFA (uniform field area) are you trying to create? What size are your EUT (i.e. what sixe UFA do you need?) Regards Charlie -Original Message- From: WNya [mailto:wendy...@yahoo.com] Sent: 27 September 2011 14:28 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Still on Radiated Immunity Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Still on Radiated Immunity
Dear EMC Experts, I have a 4x3m chamber. I encounter much difficulty to calibrate the chamber every year. I am using a Schwarzbeck 9128DS and a AR systems. Does anyone know any 'tricks' to 'tweak' the chamber to perfection? PS: PAMP is 250W, up to 1GHz. Sent from Wendy.Nya iPhone - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
RE: BS EN61000-4-3 and calibrated fields.
Ian, You take your option b. Run it and accept the field strengths as they are, knowing that they will be changed by the presence of the EUT. Ghery S. Pettit From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: Tuesday, September 27, 2011 3:00 AM To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Northeast Product Safety Society Meeting Tomorrow, September 28th
All, There will be a Northeast Product Safety Society / CNEC Product Safety Engineering Society meeting on tomorrow, September 28th, at the Holiday Inn, Boxborough MA. A social hour with light refreshments will begin at 7:00 PM and the technical meeting will start at 7:30 PM. Syed Haque, Technical Engineer at Curtis-Straus (Bureau Veritas), will present this month’s topic concerning Measurement Uncertainty and how it may affect your Certification project. If you will be in the area, please feel free to join us as advanced notice or membership in NPSS or IEEE PSES is not required. Syed has a BS in Electrical Engineering from the University of Houston. He, also, holds a BSC in Physics, with honors, from the University of Dhaka. He has 10 years of Product Safety experience at the Canadian Standards Association (CSA) and 7 months at Curtis-Straus (Bureau Veritas), where he is the top Technical Engineer and Department Supervisor. If you or anyone you know would like to give a product safety technical presentation, please contact Steve Brody by email at steven.br...@brooks.com mailto:steven.br...@brooks.com . A technical presentation should be 45 to 60 minutes in duration and be related to product safety. Although the presentation may reference your company and it’s services, the presentation must not be simply company advertising. We would also appreciate any slides or handout materials be made available for posting on the NPSS web site. Releasing presentation materials for posting is desired but not a requirement to make a presentation. The 2011 NPSS meeting schedule is available on the NPSS website at http://www.nepss.net/calendar.html. Further information about the Northeast Product Safety Society and how to become a member is available at http://www.nepss.net http://www.nepss.net/Calendar.html . You can also contact one of the NPSS officers via links on the NPSS web site. Directions: From Route 495 North or South, take Exit 28 to Route 111 East Turn right onto Adams Place (approximately 500 feet from Route 495 North) The Holiday Inn is the last building on the left. Regards, Matt Campanella NPSS Secretary (508) 786-7629 Direct (508) 480-6332 Fax matthew.campane...@motorola.com email - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: [PSES] BS EN61000-4-3 and calibrated fields.
Ian (b) – you just test your product inserted into the pre-calibrated field. The EUT will change the field, but that would happen if you measured field in presence of EUT ( this was the old test method which was replaced by the pre-calibrated field) Regards Charlie From: Ian White (UK) [mailto:ian.wh...@uk.spiraxsarco.com] Sent: 27 September 2011 11:00 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: BS EN61000-4-3 and calibrated fields.
Hi Ian, b) Just use the figures in calibration file for the test. Best regards Helge Knudsen Bolls Rådgivning Denmark From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ian White (UK) Sent: 27. september 2011 12:00 To: IEEE Forum (emc-p...@ieee.org) Subject: BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: [PSES] BS EN61000-4-3 and calibrated fields.
Hi Ian b) is the correct method. Best regards John McAuley Compliance Engineering Ireland Ltd Clonross Derrockstown Dunshaughlin Co Meath Ireland Tel: +353 1 8256722 Fax: +353 1 8256733 www.cei.ie http://www.cei.ie/ john.mcau...@cei.ie * DISCLAIMER: The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorised. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator From: Ian White (UK) [mailto:ian.wh...@uk.spiraxsarco.com] Sent: 27 September 2011 11:00 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] BS EN61000-4-3 and calibrated fields. Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
BS EN61000-4-3 and calibrated fields.
Could you please help: Could you explain what is the correct procedure when using an anechoic chamber which is calibrated and operating to EN61000-4-3. During calibration of the chamber, a calibration file is made and it is assessed according to the guidelines laid down under BS EN61000-4-3. During calibration the chamber is empty. During a normal test run a UUT is put into the chamber. The questions is : a) Do you use the calibration file as the starting point and adjust the field strength which may have changed due to the UUT being in the chamber. b) Just take the calibration file and run it and except the filed strengths would have changed due to the UUT being in the chamber. Thanks Ian White Compliance and Reliability. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
