I have seen some examples of the shipment of ferrites with a consumer product. I have purchased two computer modem boards from different vendors. Each came with a ferrite in the box, together with instructions as to how to loop the phone cable through it, and a warning ss described below.
George Waters John Juhasz wrote: > > 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). --------- 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).
