Bob, I am assuming the standard you are talking about is for some sort of low power broadband signal technology such as Bluetooth or Zigbee (because of the low power). They are simply limiting the power to 3 mW in any 1 MHz RBW/VBW. They are talking about making the measurement conducted mode on the antenna port. If your device does not have an antenna port, then either a "balun" to convert the impedance of your antenna to the 50 ohm input of the spectrum analyzer maybe needed. There are sometimes provisions for making the field strength measurement at 3 Meters (or other distance) and then backwards determining the EIRP, but am not sure if this standard has that provision. Hope that helps. Larry Stillings Compliance Worldwide, Inc.
From: [email protected] [mailto:[email protected]] Sent: Tuesday, May 13, 2008 10:45 AM To: [email protected] Subject: mw/mhz I am reading a Japanese standard for 2.4 GHz and it gives an "antenna power" limit of 3mW/MHz (no antenna distance). Can someone help as to how this is measured. I guess I don't understand the parameter being measured. Thanks Bob Heller 3M Company St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 - 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/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/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
