SJ/T 11992-2025 Electronic Projector Test Methods
Performance Test Methods for Electronic Projectors
Standard Details
SJ/T 11992-2025 (English Version)
- English translated version
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SJ/T 11992-2025 (Chinese Version)
- Chinese original version
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Standard Introduction
This standard applies to all types of electronic projectors.
It defines a comprehensive set of test signals and visual test patterns for evaluating projector performance, including uniformity test point layouts, black-and-white window signals, single-pixel signals, composite test patterns, primary-colour field signals and matrix test signals.
The document also specifies system-level measurements such as colour light output, colour light output ratio, red light ratio, display format coverage, colour rendering index, refresh rate and system efficiency.
Standard Catalog
The standard consists of the following main sections:
1 Scope 1
2 Normative References 1
3 Terms and Definitions 1
4 Test Environment and Standard Working Conditions 2
4.1 Test Environment Requirements 2
4.2 Standard Working Conditions 2
5 Test Signal Requirements 3
5.1 Test Signal Conditions 3
5.2 Test Signal Sources 3
5.3 Test Signal Patterns 3
5.3.1 Full White Field Signal 3
5.3.2 Full Black Field Signal 3
5.3.3 Window Signal 3
5.3.4 Uniformity Test Point Layout 4
5.3.5 Black-and-White Window Signal 4
5.3.6 Single Pixel Signal 4
5.3.7 Composite Test Pattern 4
5.3.8 Full Red, Full Green and Full Blue Field Signals 4
5.3.9 White Window Signal 4
5.3.10 RGB Primary-Colour Matrix Test Signal 4
5.3.11 Black Field Test Signal 5
5.4 Standard Operating State Adjustment 5
5.5 Pre-Test Adjustment 6
6 Performance Test Methods 6
6.1 Correlated Colour Temperature 7
6.2 Luminous Output 7
6.3 Illuminance Uniformity 7
6.4 Contrast Ratio 8
6.5 On-Off Contrast Ratio 9
6.6 Display Resolution 9
6.7 Static Resolution 9
6.8 Display Format 10
6.9 Focus Distance and Image Size 10
6.10 Chromaticity Error 10
6.11 Primary-Colour Chromaticity Non-Uniformity 11
6.12 White Chromaticity Non-Uniformity 11
6.13 Colour Gamut Coverage (CIE 1976) 12
6.14 White Balance Error 12
6.15 Noise 13
6.16 Convergence Error 13
6.17 Pixel Defects 13
6.18 Total Power Consumption 14
6.19 Passive Standby Power 14
6.20 Network Standby Power 15
6.21 Remote Control Reception Distance 15
6.22 Remote Control Reception Angle 15
6.23 Total Mass 16
6.24 Colour Light Output 16
6.25 Colour Light Output Ratio 17
6.27 Throw Ratio 18
6.28 Red Light Ratio 19
6.29 Display Repeatability 19
6.30 Colour Rendering Index 20
6.31 Refresh Rate 21
6.33 System Efficiency 21
Appendix A (Informative) Uniformity Test Point Positions for Different Aspect Ratios 22
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