The FCC specifically allows and requires ferrites be provided with equipment for which testing has indicated they are needed for video cables. It did not extend that to anything else than video cables. as I recall. And I do not believe the same, specific requirement and exemption exists in Europe.
Cortland ====================== Original Message Follows ==================== >> Date: 28-Jun-99 05:45:17 MsgID: 1068-97250 ToID: 72146,373 From: John Juhasz >INTERNET:[email protected] Subj: RE: emc compliance Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Parts: 1 When I was at my last company, we had a similar situation. The customer was the one who would provide the cable to the EUT. In the report it was a 'modification' note which indicated that a clamp-on ferrite, P/N xxxxyyyy was used. We then provided the ferrite with each shipment, along with a detailed instruction on usage. A warning was included on the instruction sheet that the ferrite was required to meet emission specifications, and if it was not used, compliance is not guaranteed. The instruction sheet was prominently located within the documentation package. However, take note that this product was not consumer goods, and trained installers were required for that product. Therefore, there was some assurance that the ferrite was indeed going to be installed as instructed. If this was a product that was sold directly to a home user, I wouldn't feel comfortable with this. Most times a home user just wants to get the thing running, and doesn't care, or more often doesn't read such instructions. John A. Juhasz Product Qualification & Compliance Engr. Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 516-567-8320 ext. 324 Fax: 516-567-8322 -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, June 25, 1999 3:37 PM To: [email protected] Subject: emc compliance Here's a question.... If you have a product that, at one particular frequency during radiated RF, you simply cannot get to pass the requirements of the relative CE standard without putting an external ferrite on the cable, is it "legal" , to still mark it, provided you inform your customers via the declaration of conformity or in the manual etc., that they could experience problems at such and such frequencies and if they do, to use a ferrite? (boy, that was a mouthful). Faced with a redesign or a statement, the words would be the easier route to take, since in this case, the customer could probably never see the problem frequency range. Comments? thank you for any advise, Lisa --------- 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). --------- 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). ====================== End of Original Message ===================== --------- 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).
