Hi Chris: I understand in many industrial applications a low voltage DC power supply is used to power equipment and this may be even hundreds of feet away from the supply. The filter of the supply would not be effective since the power supply connection /the antenna `could be' well beyond what the radiated test covers effectively. It would be due diligence to have the camera filtered at the input or at least tested to prove compliance.
My opinion. On 23 Jun 98 at 18:04, Chris Dupres wrote: > > ---------- Forwarded Message ---------- > > From: Chris Dupres, 100014,3703 > TO: "WOODS, RICHARD", INTERNET:[email protected] > DATE: 23/06/98 20:01 > > RE: Copy of: Conducted Emissions Test > > Hi Richard. > > You wrote: > <. It is my understanding that the OEM must perform the conducted > emission test.> > > There is no absolute requirement to carry out any tests at all! But > whoever 'places it on the market' in the EEC must make a Declaration > of Compliance that it meets the essential protection requirements of > the EMC Directive, and that's difficult to support without evidence. > > < Since they do not market or specify a particular power source, I > understand that they may test with any source that they may choose.> > > Yes, but that will not be included in the EMC declaration. Only > emissions from the Video Camera are relevant, not the power supply. > > < I further understand that if my company markets or specifies a > particular power source, it is our responsibility to ensure that the > final combination complies with the conducted emissions limits. Are > my understandings correct?> > > You can either use a Power Supply that is already CE marked and make > sure you use it as the manufacturers describe, or you can supply > both as a 'kit' which is described as such, and either you or the > person placing it on the market in the EC must make a declaration > covering both bits of equipment. If your power supply contains > filters to attenuate conducted emissions from the camera, then you > must state that the declaration only holds true when used with that > particular power supply. > > Hope that clears the mud a bit. > > Chris Dupres > Surrey, UK. Best regards, Terry J. Meck Senior Compliance/Test Engineer Phone:215-721-5280 Fax:215-721-5551 [email protected] Accu-Sort Systems Inc. 511 School House Rd. Telford, PA 18969-1196 USA
