All, My question is not regarding the flickermeter per-se but the measurement of the voltage fluctuations: Dmax specifically.
I don't have a copy of IEC1000-4-15, nor can I seem to find the information >from the older IEC 60868. What is the specification for the fastest response time for a voltage change? That is, at what point should a voltage change be "recorded" (….displayed, measured)? For example, If there were an instantaneous voltage change of 5V, a drop and subsequent recovery lasting only 3-5mSec, are the specifications such that the flickermeter will measure that? Should it measure it as 2 step functions? I gather from EN61000-3-3, that measurements of each half-cycle (at the zero crossing) are analyzed. However, looking at Appendix A of 60868, table A1 the meter MUST have the capacity to measure voltage changes as great as 1620 per minute. It follows that the sample time would have to be in the range of 600uSec rather than 10mSec. For Dmax does the meter only analyze adjacent half cycles with respect to voltage changes? Does it average very fast voltage changes that occur during a those measurement periods? Thanks for any insight. Regards David Spencer Xerox Corp. ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
