Hello, The vertical ground plane is referred to/required in CISPR22:1997 for conducted emissions if the EUT is on a table 80 CM from the floor. If the table is 40 CM from the ground plane it is not required. See figures 4 through 6 of CISPR22:1997. In ANSI it is optional. This requirement is the same in the earlier version of CISPR22.
By the way, we have extensive test data that indicates insignificant difference between conducted emission performed on an EUT placed on an 80 CM table with or without a vertical wall 40 CM from the rear of the EUT. Regards, Ken Hall -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Tuesday, August 21, 2001 5:54 PM To: [email protected] Subject: Vertical Ground Plane ANSI 63.4 clearly specifies the requirements for a vertical ground plane when performing conducted emissions measurements. I was unable to find such clarifications when reviewing CISPR 16. Do the CISPR standards require a vertical ground plane for conducted emissions? If so, where is this requirement specified? Your assistance is appreciated. Joe Martin Applied Biosystems ------------------------------------------- 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.
