1、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
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8、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-al
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11、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 specifica
12、tion.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
13、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
14、)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.2
15、210Noise: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 Limit
16、ed.-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
