Hi Lisa, I've got to ask this, so here's goes ...
Is the cable that has to be ferrited: 1. Part of the system that your company sells? Or at least sourced by your company through something like the Installation/Users Manual with either your P/N or a mfrs P/N? 2. A cable that the customer can buy from anyone? 3. A cable that the customer already has installed such as network cabling? Long time ago, I ran into a similar problem with a T1/E1 telco product. Came down to having to use shielded type cable for hookup. Well, the writeup for the customer in the Installation Guide and Users Manual was to use shielded cable for conformity since it was qualified that way. Bad news since we were in the telco arena with cables already installed at the customer site. I had to push it that way, since that's what I tested. Any representation of the product's performance during the test minus any modifications done for the test constituted in my mind not only a gross misrepresentation by me to the customer, but by the lab if not noted in the report as well. All the labs I've worked with are reputable places, so when they wrote the report that way, I had something in black and white to kick back to management. I mean here's an official third party assessment of the product. Anywho, management did not want that at all. Meant the company was at a severe disadvantage with other companies who didn't have to use such cable. They finally allowed a slight slip, I mean VERY slight slip, in the product release for what ended up being a rather simple fix. Sounds to me like your situation is similarly driven by management - you're given a product made with little time for EMI considerations and you are pass it with NO changes ... That can be a tough seat in which to sit. Lengthy post. Sorry ... Regards, Doug McKean At 03:36 PM 6/25/99 -0400, lisa_cef...@mksinst.com wrote: > >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 majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
