BS EN 61947-2:2002

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

Provides requirements for measuring and documenting key performance parameters for CRT and laser-based projectors and other variable resolution projectors that are capable of multiple variable resolutions and in which the image is raster-scanned.

IEC 61947-2:2001 specifies requirements for measuring and documenting key performance parameters for CRT and laser-based projectors and other variable resolution projectors that are capable of multiple variable resolutions and in which the image is raster-scanned. This bilingual version (2013-02) corresponds to the monolingual English version, published in 2001-09.