To throw my past experience into the water and hopefully not make it too muddy. We have tried the cost, intended market place, intended function etc. , argument many times with our local test house. And the general reply comes back the same.
Any PC, portable or desktop, should meet Class B. Cost does not seam to wash that much with the FCC, nor intended function. Stick a bunch of specialist test and measurement cards into a desktop PC. Example a network analyzer, not many people have a home WAN, then you can justify it for Light Industrial / Office Environment and the whole system, Cards + PC, need only meet class A. Now put the same specialist cards into a portable PC and when the cards are running and all their associated test leads are connected, Class A. But with the test leads disconnected and the cards idle, Class B. For example, the field engineer is back home running over the days data and the unit is now running in a residential environment. Who here has not taken their woke home on occasion. geor...@lexmark.com wrote: > I recall from my days of managing EMC that the FCC does not allow a > manufacturer to "declare" if an ITE product is Class A or B. They look > at the price, and where the product is advertised and sold as well. If > the product is within the price range consumers are willing to pay, > advertised in consumer publications, and sold through routine consumer > outlets, then it is Class B. > > Note that consumers are far more familiar with PCs now, and many are > willing to pay up to $3K or more for a home PC. > > George > > prao%tennyson.com...@interlock.lexmark.com on 02/01/2001 07:04:50 PM > > Please respond to prao%tennyson.com...@interlock.lexmark.com > > To: woods%sensormatic....@interlock.lexmark.com, > emc-pstc%majordomo.ieee....@interlock.lexmark.com > cc: (bcc: George Alspaugh/Lex/Lexmark) > Subject: RE: FCC for PCs > > You are right, they should be Class B unless they excusively specify that > the PC is not for home use. > You will need them to be Class B to start with and when you load them with > custom option cards there is a high chance that the EMI characteristics will > worsen and you'll at least meet Class A. > Praveen > > -----Original Message----- > From: wo...@sensormatic.com [mailto:wo...@sensormatic.com] > Sent: Friday, 2 February 2001 2:08 AM > To: emc-p...@majordomo.ieee.org > Subject: FCC for PCs > > We are purchasing a PC loaded with custom option cards from a supplier that > obtains the PC from a third party. The end unit as sold to us and resold by > us is not intended for home use. However, the base PC initially sold by the > third party is sized and priced such that it could potentially be used in > the home. The computer does not display the FCC mark, but is marked > according to Class A requirements. > > I am concerned that the computer may not be in compliance with FCC marking > requirements. What are the current rules that would apply in this case? > > Richard Woods > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > 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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > 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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > 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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org -- Andrew Carson - Product Safety Engineer Xyratex Engineering Laboratory Tele 023 92496855 Fax 023 92496014 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
