I would assume that the 10m semi-anechoic chamber complies with ANSI C63.4 volumetric NSA. I would also assume that the <3m chamber noes not comply. The major correlation issues would relate to:
1) 3m versus 10m (regardless of the sites) 2) non-compliant room (with peaks and nulls) versus compliant site (meets NSA) 3) antenna geometry (Bilog, bicon, log-periodic) There are lots more reasons but I believe these to be the major reasons for difficulty in correlation. A comb generator with fixed antenna is more reproducible than signal generator and antenna as part of the correlation issue is also the personell performing the test. Think about the York CNE (Constant Noise Emitter) which puts out junk continuously up to 2 GHz. With it, you can see any resonances between the sites (if they exist) and you can develop as good a correlation factor as is probably possible. Good Luck. -----Original Message----- From: Tudor, Allen [mailto:allen_tu...@adc.com] Sent: Thursday, January 11, 2001 8:58 AM To: EMC-PCST (E-mail) Subject: Site Correlation Greetings: What's the best way to correlate a pre-compliance chamber (smaller than a 3m chamber) to a 10m anechoic chamber? Should I use a signal generator and antenna or should I use a comb generator? Would the answer be different if I were correlating the pre-compliance chamber to an OATS? Thanks in advance. Allen Tudor, Compliance Engineer ADC DSL Systems Inc. 6531 Meridien Dr. Raleigh, NC 27616 phone: 919.875.3382 email: allen_tu...@adc.com ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
