Hi Kris It can depend on the country. Generally speaking though, when SAR is required you will have to show compliance at the specific frequency of concern. You would also show that where simultaneous operation is possible that operation of one transmitter will not cause the SAR to exceed the limit. For example, if you had a 5GHz WLAN and a BT that could operate simultaneously you would perform SAR for the 5ghz and then show that the BT did not cause appreciable increase of the SAR. You would not generally have to show SAR for the 2.4GHz BT unless it was a higher power level BT.
In any case, simultaneous operation would have to be addressed. For EMC you would still have to show that simultaneous operation, where possible, did not cause the system to go out of compliance. Thanks Dennis Ward Evaluation Engineer AmericanTCB Certification Resource for the Wireless Industry www.atcb.com (703) 847-4700 Direct: (703) 880 4841 NOTICE: This E-Mail message and any attachment may contain privileged or company proprietary information. If you received this message in error, please return to the sender. From: [email protected] [mailto:[email protected]] On Behalf Of Carpentier Kristiaan Sent: Tuesday, October 18, 2005 7:49 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
