GB/T 28438.1-2012 English PDF

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GB/T 28438.1-2012: Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 1: Outdoor fixed reception
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28438.1-2012	349	Add to Cart	3 days	Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 1: Outdoor fixed reception	Valid

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GY/T 268.2   GY/T 220.2   GB/T 28438.2   GB/T 34999   GB/T 31001   

Basic data

Standard ID: GB/T 28438.1-2012 (GB/T28438.1-2012)
Description (Translated English): Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 1: Outdoor fixed reception
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M60
Classification of International Standard: 33.160
Word Count Estimation: 15,152
Quoted Standard: GB/T 14109-1993; GB 20600-2006; GB/T 26252-2010; GB/T 26666-2011
Regulation (derived from): National Standards Bulletin 2012 No. 13
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the line with GB 20600-2006 terrestrial digital television broadcasting system outdoor fixed reception signal an objective assessment of the quality of coverage and methods of measurement. For the same measurement uncertainty can e

GB/T 28438.1-2012: Objective assessment and measurement methods for coverage of digital terrestrial television broadcasting signals -- Part 1: Outdoor fixed reception

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS33.160 M60 National Standards of People's Republic of China Terrestrial digital television broadcast signal coverage quality Objective assessment and measuring methods Part 1. Outdoor fixed reception Part 1. Outdoorfixedreception Issued on. 2012-10-01 2012-06-29 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Quality assessment requirements 2 5 Measurement 3 6 to simplify the evaluation and measurement methods 6 Appendix A (informative) Antenna measurement calibration coefficients (reference antenna method) 8 Reference 10

Foreword

GB/T 28438 "terrestrial digital television broadcasting signal coverage quality objective assessment and measurement methods" is divided into three sections. --- Part 1. Outdoor fixed reception; --- Part 2. mobile reception; --- Part 3. Indoor fixed reception. This is Part 1 GB/T 28438 in. This standard rule according to GB/T 1.1-2009 given draft. This part by the State Administration of Radio, Film and Television. This part of the National Film and Television Broadcasting Standardization Technical Committee (SAC/TC239) centralized. This section drafted by. State Administration of Radio Film Radio and Television Planning Institute, the State Administration of Radio, Film and Television Institute of Broadcasting Science Study hospital. The main drafters of this part. He Jianhui, Zhou Xingwei, Liu Jun, on behalf of the Ming and Fengjing Feng, Li Guosong Wu woke peak, Li Leilei, Zhangguo Ting.

Introduction

Radio and television industry technical standards promulgated GY 2008/T238.1-2008 "terrestrial digital television broadcasting signal coverage objective assessment And measuring methods - Part 1. Single-point transmitter fixed outdoor reception "in the process of popularizing digital terrestrial television and obtained a preliminary application Verification according to the industry standard in the application process the specific circumstances for the problems, the industry standard for the relevant content Modification, while increasing the informative appendix on terrestrial digital TV broadcast receiving antenna factor measurement calibration method, the formation of this standard. Terrestrial digital television broadcast signal coverage quality Objective assessment and measuring methods Part 1. Outdoor fixed reception

1 Scope

This section GB/T 28438 regulations in line with GB 20600-2006 terrestrial digital television broadcasting system fixed outdoor reception signal Objective assessment and measurement of the quality of coverage for any equivalent measure to ensure that the same method of measurement uncertainty can also be used. When the dispute, this section shall prevail. This section applies to digital terrestrial television broadcasting outdoor fixed reception.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 14109-1993 TV, FM radio field strength measurement GB 20600-2006 digital terrestrial television broadcasting transmission system frame structure, channel coding and modulation GB/T 26252-2010 VHF/UHF band terrestrial digital TV broadcasting frequency planning criteria GB/T 26666-2011 digital terrestrial television broadcasting transmission systems Implementation Guide

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Cliff Effect cliffeffect Digital TV reception from success to failure quickly hopping phenomenon. 3.2 Signal margin signalmargin The successful reception of the position to meet the conditions of the minimum signal level difference between the signal level of a measuring position. 3.3 Time probability timeprobability In the continuous measurement of a defined time period, any of the measurement locations on a signal strength reaches or exceeds a given time value with respect to the measurement Percentage between. 3.4 Location probability locationprobability (Typically 100m × 100m) a position within a specific measuring different measurement region, a strong signal field energy reaches or exceeds a given value Location percentage. ......

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