IEC_61947-2-2001.pdf

INTERNATIONALSTANDARDIEC61947-2First edition2001-09Electronic projection Measurement and documentationof key performance criteria Part 2:Variable resolution projectorsReference numberIEC 61947-2:2001(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(www.iec.ch/catlg-e.htm)enablesyou to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just PublishedThis summary of recently issued publications(www.iec.ch/JP.htm)is alsoavailable by email.Please contact the Customer Service Centre(see below)forfurther information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC61947-2First edition2001-09Electronic projection Measurement and documentationof key performance criteria Part 2:Variable resolution projectorsPRICE CODE IEC 2001 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chXFor price,see current catalogue Commission Electrotechnique Internationale International Electrotechnical CommissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61947-2 IEC:2001(E)CONTENTSFOREWORD.4INTRODUCTION.61Scope.72Normative references.73Definitions.84General requirements.125Light output measurement and specification.135.1Light output specifications.145.1.1Light output specification for projectors with a separate screen.145.1.2Full-black light level specification.155.1.3Luminance specification for devices with an integral screen.155.2Light output uniformity.155.2.1Example of a uniformity specification.155.3Contrast ratio.155.4Blanking measurement and specification.155.5Effective blanking time.165.6Blanking specification.166Variable resolution projector characteristics.176.1Visual resolution measurement and specification.176.1.1Description and general requirements.176.1.2Horizontal resolution.176.1.3Vertical resolution.186.1.4Procedure.186.2Video frequency response specifications.206.2.1Frequency response specifications.206.3Viewing angle(half/gain)specification for devices with an integral screen.206.4Input signal format compatibility.206.5Response time.206.6Colour measurements.216.6.1Colour chromaticity.216.6.2Colour uniformity.216.7Keystone correction.227Range of focus and image size.228Audio characteristics.229Light source specification.2210Noise:maximum sound level.2311Power consumption.2312Weight.2313Dimensions.2314Recommended practices.2314.1Recommended practice 1 Sync hierarchy.2314.2Recommended practice 2 DC restoration.2314.3Recommended practice 3 Sync.2414.4Recommended practice 4 Scan range labelling.24LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61947-2 IEC:2001(E)3 Annex A(normative)Figures.25Annex B(normative)Pattern generator specifications.29Annex C(informative)Considerations in formulating this standard.30C.1 General.30C.2 Light output measurement.30C.3 Visual resolution measurement.31C.4 Possible causes for measurement errors.31C.5 Input signal levels.31Annex D(normative)Complete sample specification.33Annex E(informative)Other issues,outside