Hi Reginald, I have been using a GTEM now for about a year and have some comments for you.
1. The step by step procedure you are looking for calculating the OATS response based on GTEM testing should be in the software that comes with the GTEM. 2. Correlation is very much more problematical. Unless the GTEM dimensions accommodate the product type that you are testing then correlation point for point will be next to impossible. This is especially true for products with cables as the dimensions (electrically) become very large. 3. There are some test disadvantages to the GTEM. If the test data indicates that you're failing you have no information to help you isolate the problem. There is no information for example on azimuth or polarity. Having said that completing a scan typically takes abot 0.5 hours!! Best Regards Charles Grasso Senior Compliance Engineer Echostar Communications Corp. Tel: 303-706-5467 Fax: 303-799-6222 Cell: 303-204-2974 Email: charles.gra...@echostar.com; Email Alternate: chasgra...@ieee.org From: Reginald Henry [mailto:rhe...@vicon-cctv.com] Sent: Thursday, April 24, 2003 7:56 AM To: emc-p...@majordomo.ieee.org Subject: Step by Step procedure for calculating and performing Data Correl ation All, I am working with a GTEM Cell and wish to perform self verification of our Class A products. We have going to an outside testing house for FCC verification and wish now to do our own verification. ********************************************************************* WHAT I AM LOOKING FOR IS THE.... Step by Step procedure for calculating and performing Data Correlation between a GTEM Cell and OATS ! ************************************************************** In researching what has to be done to accomplish this task, I have gathered the following information... 1)I Do NOT have to submit the correlated data to the FCC 2) The test does require that we do three ( 3 ) "separate" setups and break down when we start to collect data. 3) The correlation between a GTEM and an OATS must be performed with a device of the type for which you wish to qualify the GTEM. The OATS must comply with the requirements of ANSI C63.4 and the correlation measurements must be performed per C63.4. The same measuring instruments should ( but is not necessary )be used at both test locations. If anyone has "done the math" and the setups for such testing , would you pls contact me or point me in the direction where I could possibly "educate" myself. Regards, Reg Henry <<Reginald Henry (E-mail 2).vcf>> 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
