For the FCC, conducted and radiated emissions have to be performed at 110 V.
EN55022 does not require any particular voltage. My suggestion would be check do the conducted emissions at 110V, check them at 230V, but do the radiated at 110V only. regards Charlie > Dear Experts, > Our product is a USB device connected to the PC USB host and > operates at 5 volts D.C supply provided by the host system. Both FCC & CE > insists that conducted emission testing is required for this kind of > devices, with emissions measured at the a.c input side. Is it necessary to > run 2 tests, one with a 230 volts 50 Hz a.c supply (for CE) and the other > with 110 volts 60 Hz a.c supply (for FCC)? > > > Sincerely > > K.Balasubramanian > Project Leader - Hardware. > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: http://listserv.ieee.org/listserv/request/user-guide.html > > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > > Scott Douglas [email protected] > Mike Cantwell [email protected] > > For policy questions, send mail to: > > Jim Bacher: [email protected] > David Heald: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
