BS ISO IEC 21118-2013 Information technology Office equipment《信息技术 办公设备》.pdf
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1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication Information technology Office equipment BS ISO/IEC 21118:2012National foreword This British Standard is the UK implementation of ISO/IEC 21118:2012. The UK participation in it
2、s preparation was entrusted to Technical Committee IST/3, IT Printers and Cartridges. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for
3、its correct application. The British Standards Institution 2013 Published by BSI Standards Limited 2013 ISBN 978 0 580 73241 6 ICS 35.260 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy
4、and Strategy Committee on 31 January 2013. Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARD BS ISO/IEC 21118:2012 Reference number ISO/IEC 21118:2012(E) ISO/IEC 2012INTERNATIONAL STANDARD ISO/IEC 21118 Second edition 2012-12-01 Information technology Office equipment
5、Technologies de linformation quipements de bureau BS ISO/IEC 21118:2012ISO/IEC 21118:2012(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inc
6、luding photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Publi
7、shed in Switzerland ii ISO/IEC 2012 All rights reservedBS ISO/IEC 21118:2012ISO/IEC 21118:2012(E) ISO/IEC 2012 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Measuring methods and conditions 3 5 Items in specification sheets . 3 Anne
8、x A (normative) Specification sheets . 7 A.1 General . 7 Annex B (normative) Measuring methods and conditions . 9 B.1 Ambient conditions for measurement . 9 B.2 Light output, contrast ratio (full white/full black), and Center to corner zone ratio measurement procedures and measuring conditions 9 B.2
9、.1 Projector adjustment and other conditions 9 B.2.2 Light output measuring procedure for data projector . 10 B.2.3 Contrast ratio (full white/full black) measuring procedure . 10 B.2.4 Center to corner zone ratio measuring procedure 11 B.3 Measuring methods and conditions for audio output . 11 B.4
10、Measuring methods and conditions for acoustic noise/Sound pressure level 11 B.4.1 Environment condition for acoustic noise measurement . 11 B.4.2 Measuring methods and conditions for acoustic noise 12 B.5 Maximum power consumption . 13 B.6 Standby mode power consumption 13 Bibliography 14 BS ISO/IEC
11、 21118:2012ISO/IEC 21118:2012(E) iv ISO/IEC 2012 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technica
12、l committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wit
13、h the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Inter
14、national Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may
15、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/IEC 21118 was prepared by Technical Committee ISO/TC JTC 1, Information technology, Subcommittee SC 28, Office equipment. This second edition cancels and replaces the first edition
16、(ISO/IEC 21118:2005), which has been technically revised. BS ISO/IEC 21118:2012INTERNATIONAL STANDARD ISO/IEC 21118:2012(E) ISO/IEC 2012 All rights reserved 1Information technology Office equipment 1 Scope This International Standard specifies the information to be included in the specification shee
17、ts for front projection type data projectors and the form of specification sheets. It is also applicable to data projectors that have a video signal input port as well as a computer signal input port. It is not applicable to units for a rear screen projection or with a video input terminal alone. 2
18、Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7779, Acoustics Measurem
19、ent of airborne noise emitted by information technology and telecommunications equipment ISO 11201, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting pla
20、ne with negligible environmental corrections IEC 61947-1, Electronic projection Measurement and documentation of key performance criteria Part 1: Fixed resolution projectors IEC 60107-2, Methods of measurement on receivers for television broadcast transmissions Part 2: Audio channels General methods
21、 and methods for monophonic channels 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 light valve light-modulation device (such as a transmissive or reflective liquid crystal display, or a micro mirror device) used to create an optical image f
22、rom an external light source that corresponds to an electrical signal 3.2 telephoto end maximum focal length position of the zoom lens 3.3 wide-angle end minimum focal length position of the zoom lens BS ISO/IEC 21118:2012ISO/IEC 21118:2012(E) 2 ISO/IEC 2012 All rights reserved3.4 resize electronic
23、process which converts an input image from one resolution to a different resolution 3.5 lens shift vertical or horizontal repositioning of the projection lens relative to the light valve to compensate for projector to screen alignment differences 3.6 image position measurement of lens shift vertical
24、 or horizontal distance from the centre of the projected image to the point in which the axis of the projection lens intersects the screen (expressed as a percentage based on the overall height or width of the projected image) NOTE This figure shows an example of the image position with 70 % vertica
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