Good info Kaz. The scopes are very well written/defined in my opinion. Carl
-----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, March 29, 2013 2:32 PM To: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Subject: RE: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 This might be the -2 draft referred to by John. http://www.cenelec.eu/dyn/www/f?p=104:110:4087993984486690::::FSP_PROJECT,FS P_LANG_ID:23967,25 Kaz Gawrzyjal Global Regulations and Standards Dell | Worldwide Regulatory Compliance -----Original Message----- From: Gawrzyjal, Kazimier Sent: Friday, March 29, 2013 1:28 PM To: 'Pettit, Ghery'; Carl Newton; 'Tyra, John'; 'John Woodgate'; [email protected] Subject: RE: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 http://www.cenelec.eu/dyn/www/f?p=104:110:4150979745446217::::FSP_PROJECT,FS P_LANG_ID:23966,25 Kaz Gawrzyjal Global Regulations and Standards Dell | Worldwide Regulatory Compliance -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pettit, Ghery Sent: Friday, March 29, 2013 1:12 PM To: Carl Newton; 'Tyra, John'; 'John Woodgate'; [email protected] Subject: RE: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 I don't have the standard, but what does the Scope say? That should draw a ring around what is and what is not covered by the standard. Ghery S. Pettit -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Carl Newton Sent: Friday, March 29, 2013 11:09 AM To: 'Tyra, John'; 'John Woodgate'; [email protected] Subject: RE: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 John (Tyra), The title of EN 50332-2 suggests that it's directed toward portable players. I'm not simply trying to find an escape clause, but I do want to be certain that I'm going down the correct path. Does the scope of -2 limit the standard to headphones associated with portable players? In this case I have an automotive radio head from one company and matched wireless headphones from another. This specific set will be sold as a system. But I would like the headphone report to allow that manufacturer the freedom to apply it to other "systems" as needed going forward (if applicable). Thanks again, Carl -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tyra, John Sent: Friday, March 29, 2013 1:46 PM To: John Woodgate; [email protected] Subject: RE: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 EN60065 AMD12 and EN60950 have new clauses for limits for headphones sold without players. Also EN50332-2 specifies measurement criteria for standalone headphones. Also be aware that there are draft standards for EN50332-1 and -2 which are out for vote by the National Committees and are expected to be published soon. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Friday, March 29, 2013 1:29 PM To: [email protected] Subject: Re: USA Lab for Headphone Sound Pressure Level Test per EN 50332-1 In message <[email protected]>, dated Fri, 29 Mar 2013, Carl Newton <[email protected]> writes: >I'm walking on new ground with this one. I have an automotive audio >system with a wireless connection to portable headphones for use within >the vehicle. Because they are wireless, the headphones have their own >internal speaker amplifiers and volume adjustment. The sound source is >external and not portable, but the headphones appear to qualify as >portable. What's your take on this? It isn't a portable music player within the definition is EN 60065. One criterion is that you can *walk around* with the *player* and headphones on your person. Your player is fixed in the car, and I don't suppose you can walk around in the car! Having said that, your system could be used for listening to music for long periods, so I recommend that you do restrict the maximum sound level to 100 dB SPL. A measurement using a 1 kHz sine wave and an IEC 60318-1 simulator should be sufficient. EN 50332-1 is only a 'method of measurement' standard; the safety requirements are in EN 60065, and your system might not be able to support all of them (such as the automatic warnings). -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk Which Thunderbird will David Miliband pilot? Or will he drive Lady Penelope? John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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