Ken, I guess I stand corrected ! I spoke with Thomas Philips of the FCC, he gave me addition info.
I had asked the same question to him that I had asking the group. Apparently I was mixing Apples with Oranges. With our products we are dealing (Information Equipment ) Class A part 15 sub part B ,etc. We are looking to self " VERIFY " but NOT to have our product Certified. My understanding in speaking to Thomas Phillips is that when you are Certifying your products and you are using a GTEM Cell to do so , that is only then that you take your test product to the OATS and perform this back and forth between OATS and GTEM ( three (3) times ) . You then submit this data to the FCC and show your method of data correlation. My understanding is that this is only to be once ! This is NOT what I am actually looking for. I am looking to FCC Verify . Reg -----Original Message----- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Wednesday, August 14, 2002 5:37 PM To: Reginald Henry; emc-p...@majordomo.ieee.org Subject: Re: GTEM Cell / FCC Data Correlation I evolved this same technique for a customer who was having problems correlating GTEM and OATS data. But I made the following extra recommendation which I believe is absolutely essential. If the EUT has any cables attached to it, power or otherwise, then cable common mode currents must be separately controlled, because the algorithm which correlates GTEM potentials and OATS field intensities assumes the EUT is a point source of radiation. This is true whether you use a software algorithm or a completely empirical technique such as a standard site source (comb generator driving a stub antenna). The cables are a distributed source of radiation and cannot be properly laid out in the GTEM cell (even in my customer's cell, in which I could stand up and walk around). ---------- >From: Reginald Henry <rhe...@vicon-cctv.com> >To: emc-p...@majordomo.ieee.org >Subject: GTEM Cell / FCC Data Correlation >Date: Wed, Aug 14, 2002, 10:43 AM > > > > Group, > > I have a GTEM Cell that I use for CE Emission and Immunity testing. > > For my FCC testing currently I only do "FCC Prescreening" ( using "package > software to control > > and monitor the emissions in the cell )for FCC Class A, etc., then we send > > the product out to a testing house in the area to get the FCC cert. > > > I inquired about FCC "self certifying" ones own site , and found it to be a > do able but involved > > process. > > > My understanding now, is that there is a way to comply with the requirements > by the FCC using something call "Data Correlation". This is where you would > go to an OATS and take measures, and then take the same unit ( all things > being equal , setup , mode of operation , etc ) inside of the GTEM Cell . > > If you document this ( emission reading of one vs. the other ) and then > correlate the data , all subsequent tests in your GTEM Cell can be adjusted > to reflect what you would have gotten at an OATS. > > My question is, does anyone know where there is an "Official" FCC document > stating that this is an accepted practice, or where EXACTLY is this info > located on the FCC web site? > > > Once again, thanking you all in advance for your assistance. > > Reg Henry > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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