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EN 61947-2:2002

Current
Current

The latest, up-to-date edition.

Electronic projection - Measurement and documentation of key performance criteria - Part 2: Variable resolution projectors
Published date

28-02-2002

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Light output measurement and specification
   5.1 Light output specifications
        5.1.1 Light output specification for projectors
               with a separate screen
        5.1.2 Full-black light level specification
        5.1.3 Luminance specification for devices with
               an integral screen
   5.2 Light output uniformity
        5.2.1 Example of a uniformity specification
   5.3 Contrast ratio
   5.4 Blanking measurement and specification
   5.5 Effective blanking time
   5.6 Blanking specification
6 Variable resolution projector characteristics
   6.1 Visual resolution measurement and specification
        6.1.1 Description and general requirements
        6.1.2 Horizontal resolution
        6.1.3 Vertical resolution
        6.1.4 Procedure
   6.2 Video frequency response specifications
        6.2.1 Frequency response specifications
   6.3 Viewing angle (half/gain) specification for
        devices with an integral screen
   6.4 Input signal format compatibility
   6.5 Response time
   6.6 Colour measurements
        6.6.1 Colour chromaticity
        6.6.2 Colour uniformity
   6.7 Keystone correction
7 Range of focus and image size
8 Audio characteristics
9 Light source specification
10 Noise: maximum sound level
11 Power consumption
12 Weight
13 Dimensions
14 Recommended practices
   14.1 Recommended practice 1 - Sync hierarchy
   14.2 Recommended practice 2 - DC restoration
   14.3 Recommended practice 3 - Sync
   14.4 Recommended practice 4 - Scan range labelling
Annex A (normative) Figures
Annex B (normative) Pattern generator specifications
Annex C (informative) Considerations in formulating
        this standard
Annex E (informative) Other issues, outside the scope of
        this standard, that may affect picture clarity
Annex F (informative) Possible causes of photometric
        measurement errors
Annex G (normative) Alternative method for measuring
        resolution using the NIDL grille contrast method
Annex H (informative) Photometer precision and veiling
        glare
Annex I (informative) Light measuring devices
Annex J (informative) Figure of merit for projection
        display colour gamut
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Specifies requirements for measuring and documenting key performance parameters for CRT and laser-based projectors and other variable resolution projectors.

Committee
CLC/TC 100X
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Current

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IEC 60107-1:1997 Methods of measurement on receivers for television broadcast transmissions - Part 1: General considerations - Measurements at radio and video frequencies
IEC 60050-845:1987 International Electrotechnical Vocabulary (IEV) - Part 845: Lighting
EN ISO 3741:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms (ISO 3741:2010)
IEC 61947-1:2002 Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors
EN ISO 7779:2010 Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment (ISO 7779:2010)
ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ANSI IT7.228 : 1990 AUDIOVISUAL SYSTEMS - LIQUID CRYSTAL IMAGING DEVICES FOR USE WITH OVERHEAD PROJECTORS - METHOD FOR MEASURING & REPORTING PERFORMANCE - CHARACTERISTICS & FEATURES
ISO 9241-8:1997 Ergonomic requirements for office work with visual display terminals (VDTs) Part 8: Requirements for displayed colours
ISO 7779:2010 Acoustics Measurement of airborne noise emitted by information technology and telecommunications equipment

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