Clause 16.4 of CISRP 16-1 has a specification for ambient noise. Clause 5.1.2 of IEEE C63.4:2000 basically says the ambients are to be 6 dB below the signals. If the site is located anywhere near civilization, you can forget that. Your customer will probably have to learn to live with the noise like the rest of us.
As an aside, per ANSI C63.7 it may be necessary to increase the size of the ground plane in order to meet the vertical NSA. Richard Woods Sensormatic Electronics Tyco International -----Original Message----- From: Gelfand, David [mailto:[email protected]] Sent: Thursday, January 24, 2002 11:14 AM To: [email protected] Subject: Ambient noise limits for OATS? Hello all, We are being asked to evaluate ambient noise for a possible rooftop OATS. Are there any published limits to ambient noise for an OATS location? Thank you, David. David Gelfand Regulatory Approvals Kontron Canada ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [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: No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [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: No longer online until our new server is brought online and the old messages are imported into the new server.
