Charles, See ANSI C63.4 Section 5.1.2 "Ambient radio noise and signals" (at least that is the section in the 2009 edition of C63.4.)
-Bob Sykes From: Grasso, Charles [mailto:charles.gra...@dish.com] Sent: Wednesday, April 10, 2019 2:03 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [EXTERNAL] [PSES] EMI testing with ambient CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hello all - My question is regarding the validity of data taken with a high ambient condition present. Due to test configuration constraints we have high broadband noise entering a test chamber via the cables entering the enclosure. The bb noise is about 20MHz wide and is hitting the FCC Class B spec. Of course I have failing data (from the EUT) reported by the lab. The failing data exceeds the FCC spec by about 6dB. Question: What are the conditions under which a data point is considered invalid in the presence of high ambient bb noise?? Thanks! Charles Grasso W: 303-706-5467 - ---------------------------------------------------------------- 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<mailto:emc-p...@ieee.org>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ieee-2Dpses.org_emc-2Dpstc.html&d=DwMFAg&c=YEQWdgm3lcu5w_Y3fWOQZUGtAhl_lImuPlnxuD4zIqo&r=E-bIuBpV7qaznZidXiTC0TWb0gnLg1HYoyssP-ii97E&m=OTDDl4-_cHXl8x45r1HDgR09bp-Vt_w-oRuuYZpd-FE&s=UOMPa4ICf9Urir2NpxsBpstyktIVM5uVPRdapscdllw&e=> Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/<https://urldefense.proofpoint.com/v2/url?u=http-3A__product-2Dcompliance.oc.ieee.org_&d=DwMFAg&c=YEQWdgm3lcu5w_Y3fWOQZUGtAhl_lImuPlnxuD4zIqo&r=E-bIuBpV7qaznZidXiTC0TWb0gnLg1HYoyssP-ii97E&m=OTDDl4-_cHXl8x45r1HDgR09bp-Vt_w-oRuuYZpd-FE&s=8J-_mr-3u5ytRRWFhx-ItsS5Tr969E7X20Oi1Pmf8B8&e=> can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ieee-2Dpses.org_&d=DwMFAg&c=YEQWdgm3lcu5w_Y3fWOQZUGtAhl_lImuPlnxuD4zIqo&r=E-bIuBpV7qaznZidXiTC0TWb0gnLg1HYoyssP-ii97E&m=OTDDl4-_cHXl8x45r1HDgR09bp-Vt_w-oRuuYZpd-FE&s=jeOyQ46EVhyV7n5uyoI7culeHRP-zCD9xuoEsEbEwZ8&e=> Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ieee-2Dpses.org_list.html&d=DwMFAg&c=YEQWdgm3lcu5w_Y3fWOQZUGtAhl_lImuPlnxuD4zIqo&r=E-bIuBpV7qaznZidXiTC0TWb0gnLg1HYoyssP-ii97E&m=OTDDl4-_cHXl8x45r1HDgR09bp-Vt_w-oRuuYZpd-FE&s=GMfqliPU5wgzigKF3zHtR4jgeG9hb-ZxibdtPhWIfig&e=> List rules: http://www.ieee-pses.org/listrules.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ieee-2Dpses.org_listrules.html&d=DwMFAg&c=YEQWdgm3lcu5w_Y3fWOQZUGtAhl_lImuPlnxuD4zIqo&r=E-bIuBpV7qaznZidXiTC0TWb0gnLg1HYoyssP-ii97E&m=OTDDl4-_cHXl8x45r1HDgR09bp-Vt_w-oRuuYZpd-FE&s=GN6Jp9iwWlVYW-HPaHvTlXxXJFdxwocbfGPsHJg0B5k&e=> For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org<mailto:sdoug...@ieee.org>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>> ________________________________ Please be advised that this email may contain confidential information. If you are not the intended recipient, please notify us by email by replying to the sender and delete this message. The sender disclaims that the content of this email constitutes an offer to enter into, or the acceptance of, any agreement; provided that the foregoing does not invalidate the binding effect of any digital or other electronic reproduction of a manual signature that is included in any attachment. - ---------------------------------------------------------------- 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://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
