HI Nic For unintentional radiators you will find the answer in 15.33(b).
Below 1.705MHz – 30MHz; 1.705–108 MHz – 1000MHz; 108–500 MHz – 2000MHz; 500–1000MHz – 5000MHz; Above 1000MHz to the 5th harmonic of the highest frequency or 40 GHz, whichever is lower. Thanks Dennis Ward Director of Engineering American Certification Body Certification Resource for the Wireless Industry http://www.acbcert.com 703-847-4700 fax 703-847-6888 direct - 703-880-4841 From: [email protected] [mailto:[email protected]] On Behalf Of Nic Johnson Sent: Thursday, September 29, 2011 7:42 AM To: [email protected] Subject: Part 15 highest test frequency for a USB PC peripheral When testing a USB PC peripheral to FCC part 15, does anyone know if you need to go up to the 5th harmonic of the highest frequency of the PC or just the highest frequency used in the peripheral? I can’t find any rules that say this specifically. Nic Johnson Test Engineer NCEE Labs Product Compliance Solutions Phone: 402.323.6233 ext. 102 Toll Free: 1.888.567.6860 Fax: 402.323.6238 Email: [email protected] <mailto:[email protected]> www.nceelabs.com <http://www.nceelabs.com/> “Our phone and fax numbers will change as of October 1, 2011. Our new phone number will be 402.323.6233 and our new fax number will be 402.323.6238; please change them in your contact information for NCEE.” CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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://product-compliance.oc.ieee.org/ 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]>
