Standard No.:	GB/T 26683-2011
English Name:	General specification for digital terrestrial set-top box
Chinese Name:	地面数字电视接收器通用规范
Chinese Classification:	M74    Broadcasting and television transmission and receiving equipment
Professional Classification:	GB    National Standard
ICS Classification:	33.160.25 33.160.25    Television receivers 33.160.25
Source Content Issued by:	AQSIQ; SAC
Issued on:	2011-6-16
Implemented on:	2011-11-1
Status:	superseded
Superseded by:	GB/T 26683-2017 General specification for digital terrestrial set-top box
Superseded on:	2018-4-1
Target Language:	English
File Format:	PDF
Word Count:	13000 words
Translation Price(USD):	260.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the functions and performance requriements, inspection rules, marking, packing, transport and storage of digital terrestrial set-top box which supports the receiving function of the digital terrestrial television in GB 20600-2006 (hereinafter referred to as set-top box). This standard is applicable to digital terrestrial set-top box and serves as the main base for product design, production finalization and inspection. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated normative references, only the dated edition applies. For undated references, the latest edition of the normative document (including all the amendments) referred to applies.

Contents 1 Scope 2 Normative References 3 Terms, Definitions and Abbreviations 3.1 Terms and Definitions 3.2 Abbreviations 4 General Requirements 4.1 Normal Service Conditions 4.3 Appearance Structure Requirements 4.4 Interface Requirements 5 Basic Technical Requirements 5.1 General 5.2 Radio Frequency Demodulation and Channel Decoding Requirements 5.3 Transport Stream Decoding Requirements 5.4 Digital Content Protection Requirements 5.5 Baseband Video Output Performance Requriements 5.6 Baseband Audio Output Performance Requriements 5.7 Digital Audio Output Performance Requriements 5.8 Function Requirements 5.9 Performance Requriements of Remote Performance and Remote Emitter 5.10 Power Supply Adaptability Requirements 5.11 Limit of Electromagnetic Compatibility Characteristic 5.12 Safety Requirements 5.13 Reliability Requirements 5.14 Environment Test Requirements 5.15 Unpacking Inspection Requirements 5.16 Process Assembly Inspection Requirements 6 Test Methods 6.1 Inspection Methods of Graphic Symbols for Equipment, Appearance and Structure, Interface 6.2 Radio Frequency Demodulation and Channel Decoding Measurement Methods 6.3 Transport Stream Decoding Characteristic Masurement Method 6.4 Digital Content Protection Measurement Method 6.5 Baseband Video Output Characteristic Measurement Method 6.6 Baseband Audio Output Characteristic Measurement Method 6.7 Digital Audio Output Performance Measurement Method 6.8 Function Measurement method 6.9 Measurement Method for Remote Performance and Remote Emitter 6.10 Power Supply Adaptability Measurement Method 6.11 Measurement Method for Limit of Electromagnetic Compatibility Characteristic 6.12 Safety Inspection Method 6.13 Reliability Test Method 6.14 Environmental Test Method 6.15 Unpacking Inspection Method 6.16 Process Assembly Inspection Method 7 Inspection Rules 7.1 Qualification Inspection 7.2 Acceptance Inspection 7.3 Routine Inspection 8 Marking, Packing, Transport and Storage 8.3 Transport 8.4 Storage Appendix A (Normative) Acceptable Error Free Appendix B (Informative) Multipath Channel Model Appendix C (Normative) Unpacking Inspection Content and Nonconformity Criteria Appendix D (Normative) Normal Temperature Performance Inspection Content and Nonconformity Criteria Appendix E (Normative) Environmental Test Content and Nonconformity Criteria Appendix F (Normative) Process Assembly Inspection Content and Nonconformity Criteria Appendix G (Informative) Conditional Access Interface Appendix H (Informative) Function of Remote Emitter