Standard No.:	GB/T 26684-2011
Chinese Name:	地面数字电视接收器测量方法
English Name:	Methods of measurement for digital terrestrial set-top box
Professional Classification:	M74 Broadcasting and television transmission and receiving equipment
ICS Classification:	33.160.25 Television receivers
Issued by:
Issued on:	2011-06-16
Implemented on:	2011-11-01
Status:	ABOLISHED
Replace By:	GB/T26684-2017 Methods of measurement for digital terrestrial set-top box
Replace By Date:	2018-04-01
Language:	English
File Format:	PDF
Word Count:	18000 words
Price(USD):	540 (USD)
Delivery:	via email in 1-5 business day

1 Scope
This standard specifies the measuring conditions, electric property measurement items and measurement methods of digital terrestrial set-top box (hereinafter referred to as set-top box or SB) that supports digital terrestrial television reception function specified in GB 20600-2006.
This standard is applicable to standard definition (SD) and high definition (HD) digital terrestrial set-top boxes that support digital terrestrial television reception function specified in GB 20600-2006.
2 Normative References
The following documents are essential for the application of this Standard. For the dated normative references, only the dated editions are applicable to this document. For the undated references, the latest editions of the normative documents (including all the amendments) are applicable to this document.
GB/T 3174 Characteristics of PAL-D Television Broadcasting System
GB 3659-1983 Methods of Measurement of Television Video Channel
GB/T 17975.1 Information Technology - Generic Coding of Moving Picture and Associated Audio Information - Part 1: System (GB/T 17975.1-2010, ISO/IEC 13818-1:2007, MOD)
GB/T 17975.2 Information Technology - Generic Coding of Moving Picture and Associated Audio Information - Part 2: Video (ITU-TH, 262: 1995, IDT)
GB/T 17975.3 Information Technology - Generic Coding of Moving Picture and Associated Audio Information - Part 3: Audio (ISO/IEC 13818-3:1998, IDT)
GB 20600-2006 Framing Structure, Channel Coding and Modulation for Digital Television Terrestrial Broadcasting System
GB/T 22122-2008 Methods of Measurement of Surround Audio for Digital TV
GB/T 26685-2011 Methods of Measurement for Digital Terrestrial Television Set-top box
GB/T 26270-2010 Standard Test Signals for Digital Television Receiving Equipment
SJ/T 11324-2006 Terminology of Digital Television Receiving Equipment
3 Terms, Definitions and Acronyms
3.1 Term and Definition
For the purpose of this Standard, the following terms and definitions and the ones in SJ/T 11324-2006 apply.
3.1.1
Acceptable error free
Error code events that are not corrected within the specified time are less than a certain threshold during the signal reception process

前言 Ⅰ
1 范围 1
2 规范性引用文件 1
3 术语和定义、缩略语 1
3.1 术语和定义 1
3.2 缩略语 1
4 测量基本要求 2
4.1 一般说明 2
4.2 测试信号 2
4.3 测量系统和测试仪器 2
4.4 标准测试条件 3
5 测量项目和方法 4
5.1 系统框图 4
5.2 射频解调与信道道解码要求 4
5.3 传送流解码特性要求 12
5.4 基带视频输出性能要求 14
5.5 音频输出特性 26
5.6 功能要求 27
5.7 电源适应性要求 27
5.8 消耗功率 28
5.9 待机消耗功率 28
附录A (规范性附录) 多径信道模型 29
附录B(规范性附录) 可接受误码 31