[PSES] Ferrite on LAN Cable
EMC Experts, If an ITE product requires a ferrite on an external LAN cable in order to comply with FCC Part 15 and EU EMC Directive requirements, is it legally required that the manufacturer include the LAN cable fitted with the ferrite with the ITE product, or can the manufacturer simply provide the ferrite along with detailed installation instructions for the end user to add the ferrite to his own LAN cable? Thanks, Gary Myers - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
In message b663bfa8769f0c478865f765ed1d17d319de0...@usa7109mb006.na.xerox.net, dated Fri, 4 Oct 2013, Myers, Gary gary.my...@xerox.com writes: If an ITE product requires a ferrite on an external LAN cable in order to comply with FCC Part 15 and EU EMC Directive requirements, is it legally required that the manufacturer include the LAN cable fitted with the ferrite with the ITE product, or can the manufacturer simply provide the ferrite along with detailed installation instructions for the end user to add the ferrite to his own LAN cable? Legal requirements don't go down to such details. This is where your EMC Assessment file comes in. You explain in it what you have done - provided the ferrite and explained how to use it. In the unlikely event of an investigation, you have exercised due diligence. I would suggest a form of magic words for the instructions: 'For continued conformity with EMC regulations, a LAN cable with a ferrite filter is required. If your LAN cable does not have such a filter, it is essential to install the filter provided.' -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk If dictionaries were correct, we would only need one, because they would all give the same information. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
Gary, Here is the response from the FCC on the same question except we asked about adding a ferrite on the power cable. The power cord with ferrite snaps and clamps for conducted emission compliance has got to be supplied as one unit. That is to say, the ferrite snaps and clamps must be incorporated into the power cord such that the purchaser of the electronic device does not have to put the ferrite snap or clamp onto the power cord when he or she is assembling the device for operation. The reason is that the FCC's historically knows that the buyer or purchaser of the electronic device will not put the ferrite snap or clamp onto the power cord and as a result the manufacturer must incorporate it into the power cord. Sincerely, Chad Bell From: Myers, Gary [mailto:gary.my...@xerox.com] Sent: Friday, October 04, 2013 8:11 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Ferrite on LAN Cable EMC Experts, If an ITE product requires a ferrite on an external LAN cable in order to comply with FCC Part 15 and EU EMC Directive requirements, is it legally required that the manufacturer include the LAN cable fitted with the ferrite with the ITE product, or can the manufacturer simply provide the ferrite along with detailed installation instructions for the end user to add the ferrite to his own LAN cable? Thanks, Gary Myers - 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.orgmailto:emc-p...@ieee.org 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://www.ieee-pses.org/list.html (including how to unsubscribe)http://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.netmailto:emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.orgmailto:mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.orgmailto:j.bac...@ieee.org David Heald dhe...@gmail.commailto: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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
In message 830f86aca6c04c0aa3791601703cb...@bl2pr08mb273.namprd08.prod.outlook.com , dated Fri, 4 Oct 2013, Bell, Chad chad_b...@bose.com writes: Here is the response from the FCC on the same question except we asked about adding a ferrite on the power cable. That may be OK for a power cable, as they are usually fairly short and provided with the product anyway. But surely it's impracticable for a LAN cable, that could be 500 m long! -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk If dictionaries were correct, we would only need one, because they would all give the same information. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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
[PSES] Surge Generator per UL 244A
Dear Members, Could you please share the manufacture and model available on the market for surge generators per UL 244A (and comments)? Clause 29.5 of UL 244A states: The surge generator shall have a souce impedance of 50 ohms. With no load on the generator, the surge waveform shall have the following characteristics: a) An initial rise time of 0.5 us between 10 and 90 percent of the peak amplitude; b) A period of 10 us for the ensuing oscillatory wave; and c) Successive peaks of alternting polarity with each peak being 60 percent of the preceding peak. Thank you very much and look forward to hearing from you. Best regards, Grace Lin - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
I agree with John (as I usually do). We purchased an electronic device a few years ago in the US and it came is a bag of snap-on ferrite beads and instructions to what cables they had to be put on; even though not all the cables were provided. For instance, if I used a USB printer then one of the beads where to go on the USB cable. I have seen instructions for electronic devices that require the customer to purchase shielded I/O cables. I've even seen where shielded Ethernet cables are required (usually short jumper cables between server and switch). I used to work for a PC company and the rule was No Ferrite Beads on I/O cables because Marketing says it gives the appearance of a low quality product, but today is not unusual to see two or three cables on your PC with molded ferrite beads. What more can be expected from any company than to provide the means and instructions to their customer on how to setup and use the product so it is compliant to the FCC regulations? IMHO The Other Brian -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, October 04, 2013 9:29 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Ferrite on LAN Cable In message 830f86aca6c04c0aa3791601703cb...@bl2pr08mb273.namprd08.prod.outlook.com , dated Fri, 4 Oct 2013, Bell, Chad chad_b...@bose.com writes: Here is the response from the FCC on the same question except we asked about adding a ferrite on the power cable. That may be OK for a power cable, as they are usually fairly short and provided with the product anyway. But surely it's impracticable for a LAN cable, that could be 500 m long! -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk If dictionaries were correct, we would only need one, because they would all give the same information. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
Hello Gary, I know Panasonic supply clip-on ferrite cores with some of their TV's with the instruction to fit them to certain cables the end user plugs into the TV. This would seem a sensible approach where the manufacturer doesn't supply all the cables that will be plugged into their product but where they know their product may conduct EMI from those ports. Your scenario seems like a perfect example of this. You wouldn't expect to receive LAN cables with a PC but if you know you emit from that port then you provide the user with the means to suppress those emissions. Just my thoughts... T - Original Message - From: Myers, Gary Sent: 10/04/13 01:11 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Ferrite on LAN Cable EMC Experts, If an ITE product requires a ferrite on an external LAN cable in order to comply with FCC Part 15 and EU EMC Directive requirements, is it legally required that the manufacturer include the LAN cable fitted with the ferrite with the ITE product, or can the manufacturer simply provide the ferrite along with detailed installation instructions for the end user to add the ferrite to his own LAN cable? Thanks, Gary Myers - 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.org GT; 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://www.ieee-pses.org/list.html (including how to unsubscribe) http://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas LT; emcp...@radiusnorth.net GT; Mike Cantwell LT; mcantw...@ieee.org GT; For policy questions, send mail to: Jim Bacher LT; j.bac...@ieee.org GT; David Heald LT; dhe...@gmail.com GT; - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Job titles
All, Thank you all for replying, many good pointers and a couple I had not thought of. When explaining my work to extended family members, I start in and quickly get that glazed look in the eye when I’ve lost them. So I usually explain I do EMC which is like making sure an appliance does not interfere with your TV or pacemaker. Or I explain I do the work to get that safety label (UL, CSA, TUV, etc.) on the back of your kitchen appliance. Now, these are not products I generally see, but they can relate to them very well. thanks, –doug Douglas E Powell doug...@gmail.com http://www.linkedin.com/in/dougp01 From: Marko Radojicic Sent: Tuesday, October 01, 2013 10:38 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Job titles Modifying your resume / title for the targeted position is always a good strategy. It doesn't hurt to add some modifiers at the end depending on who you are talking to: Product Compliance Specialist - EMC Product Compliance Specialist - Homologation Product Compliance Specialist - Safety Product Compliance Specialist - NEBS And on and on Good luck, Marko From: Allen, Chris chris.d.al...@hp.com To: EMC-PSTC@LISTSERV.IEEE.ORG Sent: Tuesday, October 1, 2013 1:23 AM Subject: Re: [PSES] Job titles Hi Doug, I have added the word “Product” before Compliance Engineer. This narrows down the type of role a little and you can always use something more specific like Telecoms, Automotive etc. depending on what job you are applying for. If you want to jazz it up a bit try “Product Compliance Specialist”. Good luck, Chris. From: Pawson, James [mailto:james.paw...@echostar.com] Sent: 01 October 2013 08:50 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Job titles When explaining to my (non-technical) friends what I do (EMC Engineer), I usually say something along the lines of: “You know when you put your mobile next to your speakers and it goes da-da-da-da-daaa-da-da? My job is to stop that happening to the things we make. We can’t interfere with mobile phones and they can’t interfere with our stuff.” Simples. (Nearly) everyone has a mobile these days so bringing the effect of what you do into a frame of reference that they understand is the first step. Ed’s plane analogy is good – you are the person that stops them plummeting out of the sky and dying! You are a HERO! Best of luck with the job hunting James From: Ed Price [mailto:edpr...@cox.net] Sent: 01 October 2013 03:34 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Job titles Doug: You can be modest for all eternity, but if you want to be effective in marketing yourself, you have to grab their attention and reach their mind in just a few seconds; you have to put on a show. Obviously, this speech would be tailored to suite your audience, but you could start with a smile, calmly but confidently saying that: I’m an engineer who, while understanding the technical aspects of your product, can also smooth your way into new markets, minimize your development costs, protect you and your company from legal attack and give your customers a reason for them to buy your next product. And then, as they recover from the shock of meeting either a blowhard or the guy they should really hire, you move in just a bit, smile and shrug a tiny bit, and ask which of those areas he finds interesting and would like to talk about in some detail. You put the lead in his hands, and let him tell you what to say next. I think that’s a great approach. BTW, did I mention that I’m not employed now? Seriously, engineers usually are not adept salesmen, so whenever you get a chance, watch how good salesmen make a pitch and close a deal. Volunteer to do a field trip with your company’s best salesman and observe how he does things; ask him about strategy and tactics. You might not think you are a salesman, but you are always selling yourself, always. When I would be asked what I did, I would generally say that I was an EMC engineer, and I worked to make sure that electronic gadgets worked happily with other electronic gadgets. I would go on to say that, for instance, as a pilot gets ready to take off, he might dial in 15 degrees of wing flaps, and little electric motors in the airplane would move the wing flaps. And I was the one who made sure those motors didn’t confuse the other circuits in the plane and accidently erase the navigation computer or command the wheels to fold up. That was about the limit of average citizen’s attention span, so you need to learn when to stop and change the subject, like asking them how they polish bowling balls or something. Ed Price WB6WSN Chula Vista, CA USA From: Doug Powell [mailto:doug...@gmail.com] Sent: Monday, September 30, 2013 6:18 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Job titles All, Of all the people on this forum I'm certain we all share
Re: [PSES] Public Service: Opt Out From Online Behavioural Advertising
From: N. Shani [mailto:nshani...@gmail.com] Sent: Tuesday, October 01, 2013 18:28 This may apply to Canadian on-line advertising only, but I'm sure other jurisdictions around the globe have similar sites/tools available. To see more, and opt-out, see http://youradchoices.ca/choices I went to that site out of curiosity and it told me that to use the site to look at its content, I had to allow setting cookies in my browser (I have my browser to not allow third-party site cookies, but otherwise they're allowed). Must be Canadian humor.☺ Peter Tarver 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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
[PSES] informative documents -- safety
Here a a couple of documents you might find useful. They were posted to LinkedIn. From Australia. http://www.productsafety.gov.au/content/index.phtml/itemId/1003280 http://www.productsafety.gov.au/content/index.phtml/itemId/1003284 Enjoy! Rich - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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
[PSES] Automotive EMC question
The CAN bus standard looks a lot like MIL-STD-1553 in architecture. But I also hear people saying that CAN bus requires more than two wires, such as three wires, or three wires plus a shield. I can see the shield for EMI, but in terms of just bus functionality, is there any need for more than just a wire pair? Ken Javor Phone: (256) 650-5261 - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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] Ferrite on LAN Cable
Was this response on the KDB, the Knowledge Data Base? If so, what is the number? That is where the FCC makes rulings on a near day to day bases. And those reasons are very similar to the ones given for the EU requirement. From: Bell, Chad chad_b...@bose.com To: EMC-PSTC@LISTSERV.IEEE.ORG Sent: Friday, October 4, 2013 8:49 AM Subject: Re: [PSES] Ferrite on LAN Cable Gary, Here is the response from the FCC on the same question except we asked about adding a ferrite on the power cable. “The power cord with ferrite snaps and clamps for conducted emission compliance has got to be supplied as one unit. That is to say, the ferrite snaps and clamps must be incorporated into the power cord such that the purchaser of the electronic device does not have to put the ferrite snap or clamp onto the power cord when he or she is assembling the device for operation. The reason is that the FCC's historically knows that the buyer or purchaser of the electronic device will not put the ferrite snap or clamp onto the power cord and as a result the manufacturer must incorporate it into the power cord.” Sincerely, Chad Bell From: Myers, Gary [mailto:gary.my...@xerox.com] Sent: Friday, October 04, 2013 8:11 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Ferrite on LAN Cable EMC Experts, If an ITE product requires a ferrite on an external LAN cable in order to comply with FCC Part 15 and EU EMC Directive requirements, is it legally required that the manufacturer include the LAN cable fitted with the ferrite with the ITE product, or can the manufacturer simply provide the ferrite along with detailed installation instructions for the end user to add the ferrite to his own LAN cable? Thanks, Gary Myers - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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
[PSES] Automotive EMC question
No, just the pair. No matter what flavour of CAN, it's just 2 wires. CAN Hi and CAN Lo. 3 twists per inch on the wiring harness. Rick Goodwin - Original Message - From: Ken Javor ken.ja...@emccompliance.com To: EMC-PSTC@LISTSERV.IEEE.ORG Sent: Friday, October 04, 2013 6:40 PM Subject: [PSES] Automotive EMC question The CAN bus standard looks a lot like MIL-STD-1553 in architecture. But I also hear people saying that CAN bus requires more than two wires, such as three wires, or three wires plus a shield. I can see the shield for EMI, but in terms of just bus functionality, is there any need for more than just a wire pair? Ken Javor Phone: (256) 650-5261 - 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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://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://www.ieee-pses.org/list.html (including how to unsubscribe) 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
