So, how do you know that "....emissions from identical modules are not additive", unless you test?.
And, didn't the FCC say in the past (or still states in the present?) that there is no need to hang additional cables all of the same type as long as emissions are not raised by more than 2 dB! Again, how do you know unless you test. Tania Grant, [email protected] <mailto:[email protected]> Lucent Technologies, Intelligent Network Unit Messaging Solutions Group ---------- From: [email protected] [SMTP:[email protected]] Sent: Friday, July 28, 2000 12:29 PM To: [email protected] Subject: Return: Rack populating? I began this thread by asking if a rack passed emissions profiling with 1 unit, is it necessary to fully populate it with (say) 4 units to demonstrate emissions compliance. I've located the reference I remembered reading...CISPR 11:1997+A1:1999 (of all things!) Under 6.4.1: 'A system which contains a number of identical equipments, but has been evaluated using only one of those equipments, does not require further evaluation if the initial evaluation was satisfactory' followed by a NOTE which says that emissions from identical modules are not additive. Any comments? In practice, I'm inclined to test to the full installation anyway, since I generally 'learn' so much about the integrated system during compliance testing... WmFlanigan Standards Engineer Ameritherm Inc Scottsville, NY ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
