If the composite device can radiate all transmitters simultaneously, I believe you will find that they will need to be tested simultaneously. The exposure limit standards indicate the sum of all exposure sources, though I am not sure that you will find that the measurement methodology for a particular phantom is set up for simultaneous measurements. You'll need to work this through with your lab of choice.
A fall back position might be to measure each separately and then numerically sum the results per the calling standards. Good luck, Don Umbdenstock Manager Compliance Engineering Tyco Safety Products / Sensormatic 6600 Congress Avenue Boca Raton, FL 33487 USA 561.912.6440 [email protected] From: Carpentier Kristiaan [mailto:[email protected]] Sent: Tuesday, October 18, 2005 10:49 AM To: EMC-PSTC List Subject: EMF testing multiple radios Hi group, A product contains multiple radio's at the same and/or different frequencies (ex. WLAN & Bluetooth (2.4GHz) & WLAN 5GHz. Do all radios have to be activated (transmitting) simultaneously to measure EMF, SAR at once or shall each radio be tested individually? Is this maybe country dependent? Best regards, Kris Carpentier Regulatory & Approvals - 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

