On Mon, 4 Oct 1999 07:41:33 +0200 Morgan Olsson writes: >Hej Dave VanHorn. Tack f=F6r ditt meddelande 17:47 1999-10-03 -0500 >enligt= > nedan: >> > "Anything that contain a semiconductor..." >> >>I think that you'll find the real reg is anything with a clock over >9kHz, >>with an exception for digital watches. > >No. For example, a lamp dimmer can make severe noise, and the "klock" >is= > only 100Hz. > >The reasoning was something like if it contain a semiconductor it can= > possibly oscillate badly. > >But also relays can make switching noise... > >BTW, this was CE regulations > >> > Actually, I think, by the law, it is illegal to do pre-testing, as >the >>device is not yet certified! >> >>Hardly. You just can't sell the device. You're still responsible for >it's >>emissions. > > >>You can also self-certify, but if the FCC finds your products in >violation, >>you better have really good paperwork. That's why the independent >labs make >>their money.=20 > >Morgans Reglerteknik, H=E4llek=E5s, 277 35 KIVIK, SWEDEN > tel +46(0)414-446620, fax -70331, mrt@iname.com A few comments... Here are the text or relevant FCC rules (which do NOT apply in Europe!). Sec. 15.3 Definitions. (k) Digital device. (Previously defined as a computing device). An unintentional radiator (device or system) that generates and uses timing signals or pulses at a rate in excess of 9,000 pulses (cycles) per second and uses digital techniques; inclusive of telephone equipment that uses digital techniques or any device or system that generates and uses radio frequency energy for the purpose of performing data processing functions, such as electronic computations, operations, transformations, recording, filing, sorting, storage, retrieval, or transfer. A radio frequency device that is specifically subject to an emanation requirement in any other [[Page 637]] FCC Rule part or an intentional radiator subject to subpart C of this part that contains a digital device is not subject to the standards for digital devices, provided the digital device is used only to enable operation of the radio frequency device and the digital device does not control additional functions or capabilities. Note: Computer terminals and peripherals that are intended to be connected to a computer are digital devices. (n) Incidental radiator. A device that generates radio frequency energy during the course of its operation although the device is not intentionally designed to generate or emit radio frequency energy. Examples of incidental radiators are dc motors, mechanical light switches, etc. Sec. 15.13 Incidental radiators. Manufacturers of these devices shall employ good engineering practices to minimize the risk of harmful interference. Sec. 15.23 Home-built devices. (a) Equipment authorization is not required for devices that are not marketed, are not constructed from a kit, and are built in quantities of five or less for personal use. (b) It is recognized that the individual builder of home-built equipment may not possess the means to perform the measurements for determining compliance with the regulations. In this case, the builder is expected to employ good engineering practices to meet the specified technical standards to the greatest extent practicable. The provisions of Sec. 15.5 apply to this equipment. For more info, see part 15 at http://hallikainen.com/FccRules . Harold Harold Hallikainen harold@hallikainen.com Hallikainen & Friends, Inc. See the FCC Rules at http://hallikainen.com/FccRules and comments filed in LPFM proceeding at http://hallikainen.com/lpfm ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.