Hi All, I hope this will help the "NSA" issue (NSA here means Normalized SITE Attenuation and not National Security Agency ?!) .
I suggest you follow for technical NSA site requirements: ANSI C63.4-2003 (144 pages) (Revision of ANSI C63.4-2001) C63.4 American National Standard for Methods of Measurement of Radio- Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz You find a link to ANSI on e.g. www.euro-emc-service.de under Links and then Standards. VNA (Vector Network Analyzer) offer nice gating features if a time domain option is build in. This may give a better understanding of problem areas/locations with site reflections/imperfections and deviations from NSA (Normalized Site Attenuation) limits. With time domain measurements you learn about the local "area" by propagation time (light foot) analysis of the TX/RX signals. good luck kind regards Dr. Diethard Hansen EES President, Principal Consultant, Trainer US Senior NARTE certif. EMC Eng. 001937NE EMC+Automotive+Telecom QM+techn. EA-Auditor Euro EMC SERVICE (EES) Dr.-Ing. D. Hansen POB 64, Bahnhofstr.39, CH-8965 Berikon 2, Switzerland, Swiss VAT (Mwst.)No.:323214 tel./fax: +41 566 33 73 81 German mobile phone: +49(0)1736015909 www.euro-emc-service.de [email protected] (mailto:[email protected]) Consulting+Seminars+R&D-Projects Marketing+CE-Testing+ww.Audits From: [email protected] [mailto:[email protected]]On Behalf Of Price, Ed Sent: Monday, April 05, 2004 4:26 PM To: 'Derek Walton'; [email protected] Subject: RE: VNA's for NSA From: Derek Walton [mailto:[email protected]] Sent: Sunday, April 04, 2004 10:37 PM To: [email protected] Subject: VNA's for NSA Hi All, I'm looking at using a VNA to perform NSA measurements. Can anyone direct me to a detailed procedure? Thanks, -- Derek N. Walton L F Research Poplar Grove, IL 61065, USA The NSA is a bit tight about handing out procedures detailing TEMPEST or COMSEC testing. You should go back to your contracting officer for guidance. If you want, I can put you in touch with a Navy TEMPEST contact who does field testing and could provide you with more authoritative advice. Regards, Ed Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
