snip > Under ANSI C63.4, alternative sites generally must meet volumetric > site attenuation criteria. "Weather protected test sites" are > currently exempt from this requirement (perhaps due to industry > pressure?) but the requirement is under consideration. > > If and when volumetric site attenuation measurements must be > universally met, I wonder how many previously acceptable sites will > have to be abandoned or rebuilt. > > Jim Hulbert > Senior Engineer - EMC > Pitney Bowes
This was the major factor in our decision to build a new site. I don't know when volumetric testing will become a requirement, but it was indicated to me that it would happen in the near future. I suspect that anyone that is currently running a little short on ground plane, or sites with large turntables will not be able to meet volumetric NSA. I can't dispute whether or not volumetric NSA measurements make sense from a technical point of view, but they will certainly cost many labs a lot of money. A bigger concern of mine is what other changes might obsolete our new test facility in the next 10 or 20 years. Best Regards, Mike Fahrion mfahr...@bb-elec.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
