If it helps, the Oxford Concise English dictionary defines "ancillary" as:
"a person, activity, or service providing essential support" Since the AC/DC adapter is essential to the function of the device, it provides more than merely "essential support" It is by all means an inseparable part of the device, even if it is a separate physical part. Sounds like something the US Supreme Court would love to spend days to argue the point. ;>)) Ralph McDiarmid Compliance Engineering Residential/Commercial Solar Business Schneider Electric Burnaby BC Canada From: itl-emc user group <[email protected]> To: [email protected], Date: 02/22/2016 09:23 PM Subject: [PSES] Ancillary Equipment per EN 301 489-1 Hi, 1. According to EN 301 489-1 the definition of ancillary equipment is: “equipment (apparatus), used in connection with a receiver or transmitter NOTE: It is considered as an ancillary equipment (apparatus) if: the equipment is intended for use in conjunction with a receiver or transmitter to provide additional operational and/or control features to the radio equipment, (e.g. to extend control to another position or location); and the equipment cannot be used on a stand alone basis to provide user functions independently of a receiver or transmitter; and the receiver or transmitter, to which it is connected, is capable of providing some intended operation such as transmitting and/or receiving without the ancillary equipment (i.e. it is not a sub-unit of the main equipment essential to the main equipment basic functions). 2. According to the above, it is my understanding that any ancillary equipment would have to meet all three conditions as the word “and” is used at the end of the first two conditions. 3. Questions: 3.1. If a radio device uses an external power supply (e.g. AC/DC adapter) without which it cannot function, would the power supply be considered ancillary equipment? My opinion is no but I would like to hear other opinions. 3.2. A radio device uses an external power supply (e.g. AC/DC adapter) to charge an internal re-chargeable battery. The device can also operate from the battery power without the power supply. Would the power supply be considered ancillary equipment in this case? My opinion is yes as the device can operate without the power supply once the battery is charged but I would like to hear other opinions. 4. The above is due to disagreement with customer concerning radiated emission testing of the power supply as ancillary equipment as stand alone for a device with a re-chargeable battery 5. Thanks in advance for any opinions. Regards, David Shidlowsky | Technical Reviewer Address 1 Bat-Sheva St. POB 87, LOD 71100 Israel Tel 972-8-9186113 Fax 972-8-9153101 Mail [email protected]/[email protected] Web www.itl.co.il Fill out Customer Satisfaction Survey Global Certifications You Can Trust This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. 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To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
