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GB/T 17737.107-2018: Coaxial communication cables -- Part 1-107: Electrical test methods -- Test for cable microphone charge level (mechanically induced noise)
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Coaxial communication cables -- Part 1-107: Electrical test methods -- Test for cable microphone charge level (mechanically induced noise)
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GB/T 17737.107-2018
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Basic data | Standard ID | GB/T 17737.107-2018 (GB/T17737.107-2018) | | Description (Translated English) | Coaxial communication cables -- Part 1-107: Electrical test methods -- Test for cable microphone charge level (mechanically induced noise) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L26 | | Classification of International Standard | 33.120.10 | | Word Count Estimation | 10,164 | | Date of Issue | 2018-09-17 | | Date of Implementation | 2019-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 17737.107-2018: Coaxial communication cables -- Part 1-107: Electrical test methods -- Test for cable microphone charge level (mechanically induced noise)
---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.
Coaxial communication cables - Part 1-107. Electrical test methods - Test for cable microphony charge level(mechanically induced noise)
ICS 33.120.10
L26
National Standards of People's Republic of China
Coaxial Communication Cables Part 1-107. Electrical
Test method cable trembling charge level (mechanical
Induced noise) test
Coaxialcommunicationcables-Part 1-107. Electricaltestmethods-
(IEC 61196-1-107.2005, IDT)
Published on.2018-09-17
Implementation of.2019-04-01
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 17737 "Coax Cable" has been or is planned to release the following parts.
--- Part 1. General rules, definitions and requirements;
---Part 1-100. General requirements for electrical test methods;
--- Part 1-101. Electrical test method Conductor DC resistance test;
--- Part 1-102. Electrical test method cable dielectric insulation resistance test;
--- Part 1-1-3. Electrical test method for cable capacitance test;
--- Part 1-104. Electrical test method for the capacitance stability test of cables;
--- Part 1-105. Electrical test method for withstand voltage test of cable media;
---Parts 1-106. Electrical test method - Voltage withstand test of cable sheathing;
--- Part 1-107. Electrical test method cable trembling charge level (mechanical induced noise) test;
--- Part 1-108. Electrical test methods for characteristic impedance, phase delay, group delay, electrical length and propagation speed test;
--- Part 1-109. Electrical test method spark test;
--- Part 1-110. Electrical test method continuity;
--- Part 1-111. Stability test of phase constants of electrical test methods;
--- Part 1-112. Electrical test method return loss (impedance consistency) test;
--- Part 1-113. Electrical test method attenuation constant test;
--- Part 1-115. Electrical test method impedance uniformity (pulse/step function return loss) test;
--- Part 1-161. Electrical test method TDR method to measure characteristic impedance;
--- Part 1-119. Electrical test methods - RF rated power;
--- Part 1-122. Electrical test method Crosstalk test between coaxial cables;
This part is part 1-107 of GB/T 17737.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part uses the translation method equivalent to IEC 61196-1-107.2005 "Coaxial Communication Cables Part 1-107. Electrical Test Methods
Cable Breathering Charge Level (Mechanical Induced Noise) Test.
This section has made the following editorial changes.
---Modify the common logarithm of the charge per unit elongation measured at the cable elongation ΔL(m) and the ratio of 1μC/m [20lg()]"
For the common logarithm of the charge per unit elongation measured in the cable elongation ΔL(m) and the ratio of 1μC/m [20lg()], see
Formula (4) and formula (5)" (see 3.1);
---Modify "8---test cable (CUT)" as "8---test cable" (see Chapter 5).
Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents.
This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part is under the jurisdiction of the National High-Tech Cable and Connector Standardization Technical Committee for Electronic Equipment (SAC/TC190).
This section drafted by. Jiangsu Hengxin Technology Co., Ltd., China Electronics Technology Group Corporation Twenty-third Research Institute, Shenyu Communication Technology
Joint stock company.
The main drafters of this section. Li Qinghe, Xu Yiyuan, Tang Xiaonan, Wang Ruiqi, Wu Zhengping, Tian Xin, Fang Xu.
Coaxial Communication Cables Part 1-107. Electrical
Test method cable trembling charge level (mechanical
Induced noise) test
1 Scope
This part of GB/T 17737 applies to coaxial communication cables and specifies the internals of the cable when it is subjected to mechanical stress.
Test method for trembling charge level (mechanical induced noise).
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Coaxial communication cables - Part 1. General rules, definitions and requirements (IEC 61196-1.2005,
IDT)
3 Terms and definitions
The following terms and definitions as defined in GB/T 17737.1-2013 apply to this document.
3.1
Cable trembling charge level cablemicrophonychargelevel
The common logarithm of the charge per unit elongation measured in the cable elongation ΔL(m) and the ratio of 1μC/m [20lg()], see equation (4) and
Formula (5).
4 Overview
When the coaxial cable is subjected to mechanical stress such as impact, tension, pressure or torsion, it will generate a non-negligible interference current or dry on the cable.
The charge that disturbs the voltage.
These disturbances are called “mechanical induced noise” or “cable chatter noise”, which is superimposed on the signal transmitted by the cable.
Has a significant impact.
This electromechanical conversion can reach frequencies up to 20 kHz (in the published literature, fast pulses up to 1 GHz are described, but these
Not included in this section).
The test procedure has the advantage of providing precise and controlled excitation of the test cable sample and the measurement results are repeatable.
In order to simplify the classification of cables with different noise characteristics, the trembling charge level of the cable is expressed in dB (μC/m), and 0 dB is defined as
1 μC/m.
A specially designed cable has a trembling charge level of approximately -60 dB (μC/m), while a standard cable has a turbpet charge level of approximately
0dB (μC/m).
5 test equipment
The test equipment is shown in Figure 1.
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