Rich
Might that be a result of a classic case of the FCC/IC position of specifying emissions but not immunity limits (presumably the Yachtboy is/was aimed at the European market which does have immunity requirements? John Allen W.London, UK From: Richard Nute [mailto:[email protected]] Sent: 08 December 2015 20:23 To: [email protected] Subject: Re: [PSES] EN55032 definition of residential environment Hmm. The Class B requirements are intended to offer adequate protection to broadcast services within the residential environment. I live about ¼ mile from 8 transmitter TV, FM, etc., towers. Only the best of radios, e.g., Grundig Yachtboy, can properly tune both AM and FM, but the digital TVs are unaffected (as near as I can tell). What about protection of my radios from the broadcast services? J Rich From: Ronald Pickard [mailto:[email protected]] Sent: Tuesday, December 08, 2015 11:32 AM To: [email protected] Subject: Re: [PSES] EN55032 definition of residential environment Hi Ian, The residential environment is generally understood to be the household/domestic environments where humans typically reside. With that said and further into EN 55032 clause 4, there is a subtle and a bit of a loose Class B definition: The Class B requirements are intended to offer adequate protection to broadcast services within the residential environment. Such residential broadcast services would typically include radio and television for personal consumption, and possibly including Wi-Fi now-a days. And, Im not sure what adequate protection actually means in this case, but given Gherys statement below, I doubt that it will get any more definitive. Best regards, Ron Pickard Regulatory Compliance Engineer Compound Photonics D | +1 (602) 883-8039 From: Ghery S. Pettit [mailto:[email protected]] Sent: Tuesday, December 08, 2015 12:00 PM To: [email protected] Subject: Re: [PSES] EN55032 definition of residential environment Disclaimer While I am the Vice Chairman of CISPR I, the following is my personal opinion and does not necessarily reflect the opinions of the Chairman or other members of CISPR I, its working groups, national committees or IEC HQ. That said I dont recall seeing Gert at CISPR I meetings, nor CISPR I WG2 (emissions) or CISPR I WG4 (immunity) meetings (he isnt a member of either WG). If he were present, he would know that the reason such regulatory statements are not in CISPR standards such as CISPR 22, 24 or 32 is that CISPR standards may not contain regulatory statements. Defining which products must meet Class A or Class B limits is up to regulators. There as even been discussion about the legality of the Class A warning label in CISPR 22 and 32. CISPR 32 does have language that gives guidance to help the user of the standard properly apply it, but a regulator is free to ignore or change this at their discretion. So, to say that CISPR I has been notorious is a bit of a stretch, in my opinion. There has been no serious work done to have two different immunity levels in CISPR 24 or 35 as it has not been felt to be needed. Join your national committee (or contact it) and make a proposal if you feel that such additional test levels would be warranted. A persuasive argument would be given a fair hearing. Be aware that any new requirements will take years to incorporate into a standard. Remember, CISPR I has been trying to get CISPR 35 published for nearly 15 years as it is, but feel free to make a proposal for an amendment to add different test levels for Class A products. Just remember, weve gotten along well with single limits in CISPR 24 since it was originally published in 1997, so a convincing argument will be needed. Ghery S. Pettit Vice Chairman, CISPR SC I From: ce-test, qualified testing bv - Gert Gremmen [mailto:[email protected]] Sent: Tuesday, December 08, 2015 9:55 AM To: [email protected] Subject: Re: [PSES] EN55032 definition of residential environment 1. Independent of the standards, the EMC directive requires marking on typeplate and/or documentation if an equipment is non-residential. 2. Unwilling standards committees have been reluctant in including the definitions in written in their standards. CISPR I has been notorious in these for years, by not even defining Class A for immunity (CISPR 24). There are ample standards and EC documents giving an appropriate definitions, in general something like: If it is predominantly used for households or is connected to a residentially used power newtwork the equipment will be residential or often said Class B. If connected to a private power network then it should be Industrial or Class A. One standard that comes to mind that gives a good description including examples is EN 61326-1:2013. An EC document TC210/Sec0515/INF from 2007 addresses the topic in full and includes the recommendation to include a common definition in all harmonized standards. Gert Gremmen Van: Bill Stumpf [mailto:[email protected]] Verzonden: dinsdag 8 december 2015 14:38 Aan: [email protected] Onderwerp: Re: [PSES] EN55032 definition of residential environment Ian, There is no definition of "residential" environment in the standard or the EMC Guide. For reference, the FCC classifies products into consumer (Class B) and non-consumer (Class A) categories. In Europe the manufacturer has a similar responsibility to make a product that meets the EMC requirements appropriate for the intended use of the product. For some products it is more or less up to the end user to determine if a Class A or Class B compliant product is appropriate. You will find the Class A warning statement in the EN 55032 standard, Clause 7. Class A equipment shall have the following warning in the instructions for use, to inform the user of the risk of operating this equipment in a residential environment: W arning: This equipment is compliant with Class A of CISPR 32. In a residential environment this equipment may cause radio interference. Bill Stumpf - Lab / Technical Manager D.L.S. Electronic Systems, Inc. 166 South Carter Street Genoa City WI 53128 Ph: 262-279-0210 From: McBurney, Ian [mailto:[email protected]] Sent: Tuesday, December 08, 2015 2:55 AM To: [email protected] Subject: [PSES] EN55032 definition of residential environment Dear colleagues In the 2015 edition of EN 55032 an interesting statement in clause 4. "Equipment intended primarily for use in a residential environment shall meet the class B limits. All other equipment shall comply with the Class A limits." I am unable to locate a definition for residential environment in the standard. Does anyone know of an official definition? Would sports stadia, theatres, hospitals, commercial industrial estates located in residential housing be included in residential environments? If the product is Class A, is the warning notice still required? Warning. This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. This used to be a requirement in EN 55022. Many thanks in advance. Ian McBurney Design & Compliance Engineer. Allen & Heath Ltd. Kernick Industrial Estate, Penryn, Cornwall. TR10 9LU. UK T: 01326 372070 E: [email protected] Allen & Heath Ltd is a registered business in England and Wales, Company number: 4163451. 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