Peter, Think about why the standards define normal environment (temperature, humidity, airpressure,etc.)conditions when performing a test.
Those environment parameters will cause the frequency to shift, cause the amplitude to change, etc..A simple example, when the emperature increases, the holes / gaps of the cover become larger, cut-off frequency becomes smaller, shielding effectiveness is reduced, your reading may become higher. If you had tested Radio Equipment against FCC Part 101, or ETSI 300-XXX, you would find both frequency and output power need to be tested by varying the environmental conditions. That's why we have to record all of those parameters during whatsever tests. Hope it helps, Leslie --- PETER PHILLIPS <[email protected]> wrote: > > Dear group, > > Has anybody heard about the term EFFECT relating to > EMC and environmental > testing combined. > > I am looking for any information on the topic, also > any views that people > may have regarding the change in EMC performance due > to adverse > environmental conditions > > Looking forward to your comments > > Peter > > -------------------------------------------------------------------- > Peter Phillips > MIRA (Motor Industry Research Association) > Tel:++44 (0)1203 355576 > Fax:++44 (0)1203 355486 > e-mail [email protected] > > > --------- > This message is coming from the emc-pstc discussion > list. > To cancel your subscription, send mail to > [email protected] > with the single line: "unsubscribe emc-pstc" > (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list > administrators). > > > _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
