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GB/T 31494-2015 English PDF

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US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31494-2015: Technical requirements and test methods for field strength meter of digital television
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31494-2015	239	Add to Cart	3 days	Technical requirements and test methods for field strength meter of digital television	Valid

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Basic data

Standard ID: GB/T 31494-2015 (GB/T31494-2015)
Description (Translated English): Technical requirements and test methods for field strength meter of digital television
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L85
Classification of International Standard: 17.220
Word Count Estimation: 11,140
Date of Issue: 2015-05-15
Date of Implementation: 2016-01-01
Quoted Standard: GB/T 6587-2012; GB 20600-2006; GY/T 170-2001
Regulation (derived from): National Standard Announcement 2015 No. 15
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 technical requirements and test methods for major number of buildings television field strength tester. This Standard applies to terrestrial and cable transmission test field strength meter design, production and testing.

GB/T 31494-2015: Technical requirements and test methods for field strength meter of digital 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 test methods for field strength meter of digital television ICS 17.220 L85 National Standards of People's Republic of China Digital television field strength tester Technical requirements and methods of measurement Issued on. 2015-05-15 2016-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. 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/TC153) centralized. This standard was drafted. China Electronics Standardization Institute, China Electronics Technology Group Corporation The 41st Institute of Tianjin Germany Electronic Instrument Co., Ltd., University of Electronic Science and Technology. The main drafters of this standard. Huang Yinghua, Hulin Jun, Cao Yuliang Cao Ling, Huang Jianguo. Digital television field strength tester Technical requirements and methods of measurement

1 Scope

This standard specifies the digital television field strength tester (hereinafter referred to as the field strength meter) main technical requirements and test methods. This standard applies to terrestrial and cable transmission test field strength meter design, production and testing.

2 Normative references

The following documents for the application of this document is essential, 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 6587-2012 General specification for electronic measuring instruments GB 20600-2006 digital television terrestrial broadcasting system frame structure, channel coding and modulation GY/T 170-2001 cable digital television broadcast channel coding and modulation specification

3 Requirements

3.1 Appearance and structure There should be a clear product surface depressions, scratches, cracks, deformation, and pollution. Surface Coating should be uniform, not blistering, cracking, shedding And wear. There should be no rust metal parts and other mechanical damage. Product no loose parts to be fastened on the panel buttons, switches, plug Block and connectors should be firm, correct, flexible operation. 3.2 Performance and functional requirements 3.2.1 The basic functional requirements Signal Level Meter shall have power measurement channel, channel lock, bit error rate (BER) measurements and other basic functions. Other functions such as measured constellation Test and analysis, carrier to noise ratio (C/N) measurement as an optional feature, defined by the product standards. 3.2.2 Frequency Range The minimum test frequency range. 5MHz ~ 870MHz. 3.2.3 Measurement bandwidth Measurement should support 8MHz bandwidth optional support 6MHz, 7MHz bandwidth. Should channel table and digital TV formats are supported It should be prescribed by product standards. 3.2.4 Support Channel Table Support channel table specified by the product standard. 3.2.5 supports digital TV standard It should support cable and (or) terrestrial television standard format, and support channel table corresponds. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 31494-2015_English be delivered?

Answer: Upon your order, we will start to translate GB/T 31494-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 31494-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 31494-2015_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.