SJ/T 11988-2025 Splicing Projection Display Unit Specification

Standard Catalog

The standard consists of the following main sections:

• 1 Scope 1

• 2 Normative References 1

• 3 Terms and Definitions 1

• 4 Basic Requirements 2

• 4.1 Operating Conditions 2

• 4.2 Graphical Symbols 2

• 5 Technical Requirements 2

• 5.1 Appearance and Structure 2

• 5.2 Functions 2

• 5.3 Display Format 3

• 5.4 Interfaces 3

• 5.5 Display Performance 3

• 5.6 Noise 4

• 5.7 Remote Control Reception Performance 4

• 5.8 Remote Control Transmission Performance 5

• 5.9 Projection Efficiency 5

• 5.10 Power Consumption 5

• 5.11 Electromagnetic Compatibility 5

• 5.12 Safety 6

• 5.12.1 General Requirements 6

• 5.12.2 Optical Radiation Safety 6

• 5.13 Reliability 6

• 5.14 Environmental Adaptability 6

• 5.15 Unpacking Inspection 6

• 5.16 Workmanship and Assembly 6

• 5.17 Product Instructions 6

• 6 Test Conditions and Methods 6

• 6.1 Appearance and Structure 6

• 6.2 Functions 6

• 6.3 Display Format 6

• 6.4 Interfaces 6

• 6.5 Display Performance 6

• 6.6 Noise 7

• 6.7 Remote Control Reception Performance 7

• 6.8 Remote Control Transmission Performance 7

• 6.9 Projection Efficiency 7

• 6.10 Power Consumption 7

• 6.11 Electromagnetic Compatibility 7

• 6.12 Safety 7

• 6.12.1 General Requirements 7

• 6.12.2 Optical Radiation Safety 7

• 6.13 Reliability 7

• 6.14 Environmental Adaptability 7

• 6.15 Unpacking Inspection 8

• 6.16 Workmanship and Assembly 8

• 6.17 Product Instructions 8

• 6.18 Environmental Protection 8

• 7 Inspection Rules 8

• 7.1 Inspection Classification 8

• 7.2 Type Approval Inspection 8

• 7.2.1 Purpose 8

• 7.2.2 Inspection Items 8

• 7.2.3 Sampling and Sample Size 9

• 7.2.4 Non-Conformity Classification and Criteria 9

• 7.2.4.1 Non-Conformity Classification 9

• 7.2.4.2 Non-Conforming Product Classification 9

• 7.2.4.3 Non-Conformity Criteria 9

• 7.2.5 Acceptance and Rejection Determination 10

• 7.3 Acceptance Inspection 12

• 7.3.1 Purpose 12

• 7.3.2 Inspection Items 12

• 7.3.2.1 Unpacking Inspection 12

• 7.3.2.2 Workmanship and Assembly Inspection 12

• 7.3.2.3 Performance Inspection 12

• 7.3.3 Sampling Plan 13

• 7.3.4 Non-Conformity Classification and Criteria 13

• 7.3.5 Acceptance Inspection Determination 14

• 7.3.6 Handling of Inspection Results 14

• 7.4 Routine Inspection 14

• 7.4.1 Purpose 14

• 7.4.2 Inspection Period 14

• 7.4.3 Inspection Items 14

• 7.4.4 Sampling Plan 15

• 7.4.5 Non-Conformity Classification and Criteria 15

• 7.4.6 Sampling 16

• 7.4.7 Routine Inspection Determination 16

• 7.4.8 Handling of Inspection Results 16

• 8 Marking, Packaging, Transportation and Storage 16

• 8.1 Marking 16

• 8.2 Packaging 16

• 8.3 Transportation 16

• 8.4 Storage 16