Sorry, I mis-spoke. Originally, the intent was to separately "recognize" CPU boards, power supplies, and enclosures. The requirement for enclosures is not in the rules only CPU boards and power supplies.
In answer to the question, there were no specific shielding effectiveness requirements. The enclosure was to be evaluated with one or more fully functional PC enclosed, or alternatively a signal generator. If the device so enclosed met the limit requirments, the enclosure was "compliant." Presumably lack of support for the enclosure rules caused the FCC to back off. Now the requirements are on the CPU board whose installation instructions must include any requirements for the use of a metal enclosure, etc. 15.101 and 15.102 describe the conditions for compliance. John P. Wagner Regulatory Compliance & Mandatory Standards AVAYA Strategic Standards. 1300 W. 120th Ave, Room B3-D16 Westminster, CO 80234-2726 Phone/Fax: (303) 538-4241 johnwag...@avaya.com > ---------- > From: Ken Javor[SMTP:ken.ja...@emccompliance.com] > Sent: Monday, July 15, 2002 1:18 PM > To: Wagner, John P (John); michael.sundst...@nokia.com; > emc-p...@majordomo.ieee.org; George Stults > Subject: Re: Open chassis computers for sale - with neon lights? > Importance: High > > What is an FCC compliant enclosure? What are the shielding effectiveness > requirements? :-) > > on 7/15/02 12:51 PM, Wagner, John P (John) at johnwag...@avaya.com wrote: > > > > > The current FCC rules are pretty clear. For "systems" assembled from > components, the "system" considered compliant if assembled from compliant > components; namely, enclosures, motherboards, power supplies. The peripheral > rules also apply. So, if this case or enclosure has been tested and shown to > be compliant when used as a component for a system, then all is ok. To be > legal, the case should have an FCC DoC. > > John P. Wagner > Regulatory Compliance & Mandatory Standards > AVAYA Strategic Standards. > 1300 W. 120th Ave, Room B3-D16 > Westminster, CO 80234-2726 > Phone/Fax: (303) 538-4241 > johnwag...@avaya.com > > > > > > > > ---------- > From: George Stults[SMTP:george.stu...@watchguard.com] > Reply To: George Stults > Sent: Monday, July 15, 2002 9:56 AM > To: 'michael.sundst...@nokia.com'; 'emc-p...@majordomo.ieee.org' > Subject: Open chassis computers for sale - with neon lights? > > The cases are being sold as components, although I am sure that any of > the > stores I visited would sell me an assembled system with the modified > plastic-window-style-cases. There is no understanding of emission > requirements at the level of the retail outlet. > > Surely this situation has come up before, where there were easily > assembled > systems from commercially available components sold for the purpose, > that > would nevertheless be non-compliant with a high degree of probability. > How > was it handled in the past? What reasoning can be applied to justify > the > proposition that the plastic-window-style-cases cannot be legally sold? > > George Stults > > -----Original Message----- > From: michael.sundst...@nokia.com [mailto:michael.sundst...@nokia.com] > Sent: Monday, July 15, 2002 5:58 AM > To: jklin...@celectronics.com; George Stults; > emc-p...@majordomo.ieee.org > Subject: RE: Open chassis computers for sale - with neon lights? > > If they are selling these PC's out of a store, how can they be > homebuilt? > > Michael Sundstrom > NOKIA > TCC Dallas / EMC > ofc: (972) 374-1462 > cell: (817) 917-5021 > amateur call: KB5UKT > > -----Original Message----- > From: ext Jeff Klinger [mailto:jklin...@celectronics.com] > Sent: Friday, July 12, 2002 5:39 PM > To: George Stults; emc-p...@majordomo.ieee.org > Subject: RE: Open chassis computers for sale - with neon lights?> > > > George, > > The method for testing motherboards is intended to be combined with the > DoC > method of declaring compliance based on individual testing of the > components > that comprise the full computer system, i.e. Assembled from tested > components. The final computer system is still required to meet the FCC > Class B limit just as if it was tested, even though it was not. I > suppose > that a small (extremely small) chance exists that the final system > could > pass if tested. > > The loophole here may be the "Home-Built devices" clause, Title 47 part > 15.23. Where the device is not marketed or constructed from a kit. This > allows for five or less devices built for personal use without the need > for > compliance testing (FCC only). > > Jeff Klinger > Director EMC Engineering > Compatible Electronics, Inc. > Ph: 714-579-0500 Fx: 714-528-8984 > http://www.celectronics.com > NARTE Certified ATL-0180-E > > > -----Original Message----- > From: owner-emc-p...@majordomo.ieee.org > [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of George Stults > Sent: Friday, July 12, 2002 3:11 PM > To: 'emc-p...@majordomo.ieee.org' > Subject: Open chassis computers for sale - with neon lights? > > > Hi Folks, > > I just walked into three local computer stores (west coast, USA) and > found > that desktop computers have become art forms. There are computer > cases for > sale with large plexiglass windows about (10in x12in), some with a fan > in > the middle of the plexiglass panel, and inside the case, there is a 12 > inch > long neon lamp, powered from the ATX power supply just like any > installable > drive. Through the window, one can see the motherboard, CPU heatsink, > etc, > all illuminated by the Neon light. Its the latest in computer > fashion, I > suppose..... > > I asked a few questions at the stores and found at there are least 2 > manufacturers, and that one can obtain kits on the internet to do the > same > modification at home. > > After looking at the computer cases, I would expect them to radiate > about > the same as an open chassis though possibly more directional. My > question > would be, is there any loophole through which this is legal, or is this > the > blatant violation that it looks like. I've heard that there is a > requirement for computer motherboards to fall within some radiated > level > with an open chassis. Is that correct and could that be the rational > here? > > George Stults > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org> > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > > > > > > -- > > Ken Javor > EMC Compliance > Huntsville, Alabama > 256/650-5261 > > >
