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GB/T 26681-2011 English PDF

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US$439.00 · In stock
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GB/T 26681-2011: Technical requirements and methods of measurement for standard testing transmitter of digital terrestrial television
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 26681-2011	439	Add to Cart	4 days	Technical requirements and methods of measurement for standard testing transmitter of digital terrestrial television	Valid

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Basic data

Standard ID: GB/T 26681-2011 (GB/T26681-2011)
Description (Translated English): Technical requirements and methods of measurement for standard testing transmitter of digital terrestrial television
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L85
Classification of International Standard: 17.220
Word Count Estimation: 19,151
Date of Issue: 2011-06-16
Date of Implementation: 2011-11-01
Quoted Standard: GB/T 11313.2-2007; GB/T 11313.4-2007; GB/T 17975.1-2000; GB 20600-2006; GB/T 26682-2011; SJ/T 11324-2006; SJ/T 11328-2006
Regulation (derived from): Announcement of Newly Approved National Standards No. 9 of 2011
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 standard for terrestrial digital TV test transmitter (hereinafter referred to as test transmitter) the technical requirements and methods of measurement. This standard applies to GB 20600-2006 standard for terrestrial digital TV test transmitter, NA terrestrial digital television broadcast transmitters.

GB/T 26681-2011: Technical requirements and methods of measurement for standard testing transmitter of digital terrestrial television

---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.
Technical requirements and methods of measurement for standard testing transmitter of digital terrestrial television ICS 17.220 L85 National Standards of People's Republic of China Terrestrial digital TV standard test transmitter Technical requirements and methods of measurement Issued on. 2011-06-16 2011-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions, abbreviations 1 3.1 Terms and definitions 3.2 Abbreviations 2 4 2 Technical Requirements 4.1 General Requirements 2 4.2 Performance Requirements 3 5 Test Method 4 5.1 Test Conditions 4 5.2 measuring device 5 5.3 Working Mode 5 5.4 Frequency adjustment step 6 Center frequency stability of 5.5 6 5.6 center frequency accuracy 6 5.7 harmonic oscillator and clutter 7 5.8 oscillator phase noise 7 5.9 Shoulder 8 5.10 band spectrum unevenness 8 5.11 9 modulation error rate Stability of output power 10 5.12 5.13 output power accuracy 10 5.14 output load impedance voltage standing wave ratio 10 Appendix A (normative) terrestrial digital television broadcasting system maximum net rate 12 Appendix B (normative) Table of Frequency Allocations 13 TV channels

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This standard by the National Standardization Technical Committee Electronic Measuring Instruments (SAC/TC242) centralized. This standard drafting units. China Electronics Standardization Institute, Shenzhen match West Information Technology Co. (Electronic Information Products Standard Quasi National Engineering Laboratory), Shanghai Jiaotong University, Tsinghua University, the national digital audio, video and multimedia products for Quality Supervision and Inspection Center, four Chuan Chuanjia Electronics Co., Ltd., Jiangsu Luyang Electronic Instrument Group Co., Ltd. of Japan Chi measurement, Rohde & Schwarz China Limited Division, Agilent Technologies, Inc., Beijing Legend Technology Co., Ltd., China. The main drafters of this standard. Hu Peng, Chenren Wei, Dai Yang, Pan Changyong, Li Li, Jiao Yang, Tian Jianbo, Qian Yu, room Haidong. Terrestrial digital TV standard test transmitter Technical requirements and methods of measurement

1 Scope

This standard specifies the line with GB 20600-2006 standard for terrestrial digital TV test transmitter (hereinafter referred to as the test transmitter) skills Surgery and methods of measurement. This standard applies to GB 20600-2006 standard for terrestrial digital TV test transmitter, NA terrestrial digital TV broadcasting transmitter.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 11313.2-2007 RF connectors - Part 2. RF coaxial connectors 9.52 specification (IEC 61169-2. 2001, IDT) GB/T 11313.4-2007 RF connectors - Part 4. inner diameter of outer conductor 16mm (0.63in), characteristic impedance 50Ω, threaded connection RF coaxial connectors (7-16) (IEC 60169-4. 1975, NEQ) GB/T 17975.1-2000 Information technology - Generic coding of moving pictures and associated audio information - Part 1. System (ISO / IEC 13818-1.2007, MOD) GB 20600-2006 digital television terrestrial broadcasting system frame structure, channel coding and modulation GB/T 26682-2011 standard terrestrial digital TV test receiver technical requirements and methods of measurement SJ/T 11324-2006 digital television receivers term SJ/T 11328-2006 digital television receiving equipment interface specification - Part 2. Transport Stream Interface 3 Terms and definitions, abbreviations 3.1 Terms and Definitions SJ/T 11324-2006 define the following terms and definitions apply to this document. 3.1.1 Shoulder shoulderattenuation From the center frequency of a predetermined value of the average power band frequencies relative to the amount of change in center frequency, in decibels (dB). 3.1.2 Mode operationmode In line with GB 20600-2006 predetermined combination of different parameters, including the number of carriers, forward error correction code rate, symbol constellation mapping mode, frame Head and symbol interleaving mode options. 3.1.3 Modulation error rate modulationerrorratio Modulated signal ideal symbol vector magnitude squared and squared symbol error vector magnitude and the ratio in decibels (dB). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 26681-2011_English be delivered?

Answer: Upon your order, we will start to translate GB/T 26681-2011_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 26681-2011_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 26681-2011_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.