Hi: This somewhat related to this subject.
Our customers in Europe have asked for DC/DC powered units. I assumed, bad, that there would be conducted emissions testing required <30 mHz. But could only find a reference to a `proposed' requirment. Also our test lab engineer agreed. Is this true? If it is, does anyone suspect when it may be requireded? What is your practice? I plan to test anyway. On 28 Apr 97 at 9:58, Tony Fredriksson wrote about, Re: EMC Test Voltages: > > All, > > Keep in mind that Australia requires 240 VAC @ 50 Hz. > So you may want to test line conducted emissions at > that level to keep them happy too. > > Regards, > tony_fredriks...@netpower.com > > ---------- > From: Steve Chin > To: Brent Taira; EMC-PSTC > Subject: Re: EMC Test Voltages > Date: Thursday, April 24, 1997 5:27PM > > Brent, I have a sort of middle of the road approach > for the FCC conducted emissions testing: I use > whatever mains voltage is available in the US, which > is usually 120V~/60Hz. For the CISPR 22 teests, I use > a regulated 230V~/50Hz power source. Japanese > conducted emissions should be tested at 100V~/50Hz > (regulated). > > All of my radiated emissions scans and immunity > testing are performed with input power of 230V~/50Hz. > > These criteria seem to satisfy all parties concerned. > > Steve Chin > StreamLogic Corp. > Menlo Park, CA, USA > sc...@streamlogic.com > > Brent Taira (72642.3...@compuserve.com) wrote: > > >Dear Group, > > > >I have a simple inquiry concerning the appropriate > >test voltages and frequencies to be used during the > >various EMC Tests. > > > >1) What are the appropriate voltages to be used > >for FCC Testing (Class > B)? > >90V, 100V, 110V, 115V, 117V, 120V? How about > >frequency? > > > >2) Same question for CISPR22? 200V, 220V, 230V, > >240V, 254V? > Frequency? > > > >3) Same for VCCI, except then you get into > >....100V and 200V. > Frequency? > > > >4) Now, EMC. Same questions. > > > >Theoretically, you would want to test for all > >possible voltages and frequencies that your product > >is intended to support. What has been the common > >practice in your company/lab/country? > > > >Thank you in advance for your time, > > > >Brent Taira > > Best regards, Terry J. Meck Senior QA/Test Engineer 215-721-5280 tjm...@accusort.com Accu-Sort Systems Inc. Telford, Pa USA
