There are several companies that manufacture such devices. While not endorsing anyone in particular I happen to use a CANbus/fiberoptic converter www.eks-engle.de <http://www.eks-engle.de/> Since they aren’t in the EMC business but are intended for other reasons don’t expect them to be completely quiet – the will likely meet class B emissions for information technology equipment but that is about all you can really expect. The ones I have required an external power supply and I rounded up some small linear DC supplies to driver them. Using linear helps keep down the noise in the chamber. Basically these are much better than the CANbus converters I had to use prior to that but they are not noiseless.
The manufacturer of these devices don’t have a clue what you’re trying to do with them and will assure you that the meet the limits etc but I always make it clear that if they don’t meet my needs that I will send them back and I have on occasion. I’ve sent computers back for the same reason. I think they will help you out but they won’t’ be a complete panacea. ________________________________ From: [email protected] [mailto:[email protected]] Sent: Friday, October 29, 2010 11:28 AM To: [email protected] Subject: [PSES] Fiber Converters for EMC Chamber Hello, I need to get some USB to fiber optic converters and RS-232 to fiber optic converters to use in a semi-anechoic chamber. I need to use these interfaces over about a 15-20 meter distance, while isolating noise from outside the chamber. Does anyone know of what specific devices I should purchase? A Google search returns many results but I would like some opinions of what people are using so I don't end up with internally generated "ambients" in the chamber. Regards, Tim Pierce - ---------------------------------------------------------------- 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.ieeecommunities.org/emc-pstc 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- 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.ieeecommunities.org/emc-pstc 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
