Our clamp has three half moon shaped spring loaded ferrite pieces that holds the cable in the bottom of the clamp’s ferrite cores, so such spacers would not work for me.
I can make an argument that the cable is run the same way that it is when my clamp is calibrated so any alteration to that setup would be wrong to apply. Plus, if you use the feedback method where you are reading back the injected rf with a current clamp then what does it matter how the cable goes through the clamp? Some of these auditors really drive me nuts. Brian From: Sundstrom, Michael [mailto:[email protected]] Sent: Tuesday, November 20, 2012 12:42 PM To: Kunde, Brian; [email protected] Subject: RE: Fischer CC EM Clamp F-203I-32mm I once had an auditor who dinged me on not keeping the cables centered in the injection clamp. Next day I had foam cell material in the clamp, pretty much kept the cables centered. I don’t think it made much difference??? Well, no difference that I could see… Michael Sundstrom OHD TREQ Dallas Electronic Lab Analyst EMC Lead (214) 579 6312 office (940) 390 3644 cell マイク KB5UKT From: Kunde, Brian [mailto:[email protected]] Sent: Tuesday, November 20, 2012 11:15 AM To: [email protected]<mailto:[email protected]> Subject: Re: [PSES] Fischer CC EM Clamp F-203I-32mm Wendy, Who makes an EM Clamp that has a cable entry of 30mm? The size of the cores needed to handle a cable diameter of any size will be large enough to make this difficult if not impossible. Plus you have to have room for the input ‘N’ connector mounted under the cores. I have never seen an EM Clamp where the cable entry wasn’t 50mm or greater though I’m not saying one doesn’t exist. Typically they are more like 75mm. I don’t know where your supplier got this requirement. I don’t have the latest version of the 4-6 standard but the copy I have only states in section 7.2, “The cable between the AE and the injection clamp shall be kept between 30mm and 50mm above the ground reference plane”. The text doesn’t say anything about the height of the clamps or the cable height between the clamp and EUT, though the picture in figure 6 shows it as 30mm. I don’t see where the short distance the cable has to run higher than 30-50mm coming in and out of the clamp would have much impact on the test results. The Other Brian From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Wendy Nya Sent: Tuesday, November 20, 2012 7:50 AM To: EMC- PSTC Subject: Fischer CC EM Clamp F-203I-32mm Dear All, We have a very old Fischer CC F-203I-32mm EM Clamp. A supplier pointed out that it does not comply to the 61000-4-6 standard's requirement - the height of the cable entry is more than the standard's requirement of 30-50mm. I just checked Fischer CC website. They are still selling this model. Is anyone still using it? Regards, Wendy - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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To post a message to the list, send your e-mail to <[email protected]<mailto:[email protected]>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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 <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> ________________________________ 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
