Thomas, EMC can be both a regulatory and a quality issue. Many countries place limits on the electromagnetic emissions from various devices and a few also legislate immunity requirements (EU, Korea and China come to mind). Multimedia devices would clearly have such requirements. Audio equipment may not (at least not in Brazil), but consideration of EMC issues should be made even without government regulations.
If audio equipment is designed without regard to EMC (and much is) the user may suffer interference from nearby radio transmitters and other sourced of EMI. I have had telephone instruments receive AM broadcast stations (as well as my ham station). Poor design on the part of the telephone manufacturer. A simple filter on the phone line cured the problem. I have also had stereo systems receive nearby mobile radio transmissions. Again, a poor design on the part of the stereo equipment. It didn't have a receiver built in and obviously should not have been functioning as a receiver. This can be a serious customer satisfaction issue. Designing and testing products for immunity can help with this matter. Good luck in dealing with the folks who control the budget. If you have specific questions about various tests and what equipment or facilities you might need, there are plenty of people on this list who will be able to help. Ghery S. Pettit, NCE -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Wednesday, December 11, 2002 1:16 PM To: [email protected] Subject: Importance of EMC Hi All, I would like to have some of your experiences to help me to explain to my boss what is the importance of EMC and why it is interresting to develop an EMC/EMI area... To explain a little, we are a small R&D institute of technology and consumer electronics (principally Audio and multimedia) for the Brasilian market... I work here for one year (I'm french and come from a different horizon: Telecom and RF) and try to develop a small EMC area to improve the quality of our projects... For 2003 I would like to buy some stufs to start a prototype/pre-qualification lab and I made a budjet... Now I need to explain and convince the liders !!! Can I have some advices ? Thanks a lot... Thomas K. ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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"
