James, FCC published a new DTS procedure, FCC KDB 558074 D01 DTS Meas Guidance v01 <https://apps.fcc.gov/kdb/GetAttachment.html?id=39668>, on January 18, 2012. If you are able to connect the antenna port of the device under test to the instrument (spectrum analyzer, through attenuators if needed), you may wish to use this procedure. FCC has done a great job on this procedure (save engineers' time and have better repeatability).
If you need a sample test report using the FCC DTS procedure, DTS Measurement <https://apps.fcc.gov/kdb/GetAttachment.html?id=20422>, published March 23, 2005, you may wish to look the report under FCC ID: EROCWD6660 or FCC ID: EROCWD6782. These two applications were granted by the FCC. Conducted measurement was used to take -20dBc data (screen captures). With regards, Grace Lin On Wed, Feb 15, 2012 at 5:46 AM, Pawson, James <james.paw...@echostar.com>wrote: > > Bit of a regulatory puzzler here, please bear with me. > > Testing an intentional radiator to FCC 15.247. Spurious emissions allowed > to be -20 dBc *except* in the 15.205 restricted bands where the general > radiated emissions limits in 15.209. > > Radiated emissions limits: 216 ~ 960 MHz = 200 uV/m, 960 MHz upwards = 500 > uV/m > The tighter (lower) limit applies at the band edges so at 960 MHz the > limit is 200 uV/m > > Restricted Bands includes 960 MHz to 1240 MHz > > I've drawn a picture to help explain -- * > http://thedatastream.4hv.org/data/fcc_15-247_960mhz_limit_line_question.gif > *<http://thedatastream.4hv.org/data/fcc_15-247_960mhz_limit_line_question.gif> > > > *My question is - what is the limit at 960 MHz for spurious emissions > from an intentional radiator?* > > > My interpretation (to the letter of part 15) is that for 960 MHz *only*, > the limit is 200 uV/m. However this doesn't follow a common sense approach > to the limits and restricted bands (the green limit line on the picture). > > We currently have an issue with a product with emissions around 960 MHz > that would cause it to fail the strict interpretation of the standard but > pass the "common sense approach" interpretation. So any assistance is > greatly appreciated :) > > Thanks in advance > James > > ~~~~~~~~~~~~~~~~~~~~ > James Pawson > Leading Hardware Engineer - EMC > *EchoStar Europe* > ~~~~~~~~~~~~~~~~~~~~ > > > > > - > ---------------------------------------------------------------- > > 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 < > emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > 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 <emcp...@radiusnorth.net> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org> > David Heald <dhe...@gmail.com> > - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
