It seems like we have one of four options: 1) We perform an FCC type average for all emissions under the US test spec. 2) We need to perform a CISP average for conducted emissions and an FCC type average for frequencies above 1GHz. 3) The FCC requires a CISPR average above 1GHz and has effectively changed the emissions spec. 4) There isn't an FCC spec and we can choose to average the data with which ever method passes? -----Original Message----- From: Jim Eichner [mailto:[email protected]] Sent: Tuesday, May 04, 2004 12:01 PM To: 'EMC-PSTC - forum' Subject: RE: Average Vs. Average
Not in the text of Part 15B they didn't. In fact they forgot to make ANY mention of the average detector for conducted emissions. It took me 3 e-mail exchanges with their help desk just to verify that the approach we are supposed to use is to pass the QP limits with the QP (or peak) detector and to pass the Avg limits with an Avg detector, as in CISPR testing. Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: [email protected] web: www.xantrex.com Confidentiality Notice: This email 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. From: Aschenberg, Mat [mailto:[email protected]] Sent: Monday, May 03, 2004 9:53 AM To: '[email protected]' Subject: Average Vs. Average Greetings: As many of you know, the FCC changed the conducted emissions limits to align with the CISPR limits. The new limits include a Quasi-Peak and an Average limit. When they changed to the new limits, did the FCC corresponding align the Average Detector with CISPR 16? Mat Thanks, Mat Mat Aschenberg Agency Engineer II EchoStar Technologies Corporation Tel: 303-706-5064 Fax: 303-723-3901 Cell: 303-906-6224 Email: [email protected] Email Alternate: [email protected]
