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GB/T 17737.108-2018 English PDF

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GB/T 17737.108-2018: Coaxial communication cables -- Part 1-108: Electrical test methods -- Test for characteristic impedance, phase and group delay, electrical length and propagation velocity
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 17737.108-2018264 Add to Cart 3 days Coaxial communication cables -- Part 1-108: Electrical test methods -- Test for characteristic impedance, phase and group delay, electrical length and propagation velocity Valid

Basic data

Standard ID: GB/T 17737.108-2018 (GB/T17737.108-2018)
Description (Translated English): Coaxial communication cables -- Part 1-108: Electrical test methods -- Test for characteristic impedance, phase and group delay, electrical length and propagation velocity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L26
Classification of International Standard: 33.120.10
Word Count Estimation: 14,169
Date of Issue: 2018-03-15
Date of Implementation: 2018-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 17737.108-2018: Coaxial communication cables -- Part 1-108: Electrical test methods -- Test for characteristic impedance, phase and group delay, electrical length and propagation velocity



---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 1-108. Electrical test methods--Test for characteristic impedance, phase and group delay, electrical length and propagation velocity ICS 33.120.10 L26 National Standards of People's Republic of China Coaxial communication cable Part 1-108. Electrical Test Methods Characteristic impedance, phase delay, group delay, electrical length, and Propagation speed test Coaxialcommunicationcables-Part 1-108.Electricaltestmethods- Propagation velocity (IEC 61196-1-108.2011, IDT) 2018-03-15 Release.2018-10-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released

Foreword

GB/T 17737 "Coaxial Communication Cable" has or plans to issue the following parts. --- Part 1. General rules, definitions and requirements; --- Part 1-100. General requirements for electrical test methods; --- Part 1-101 . Electrical test methods Conductor direct current resistance test ; --- Part 1-102 . Electrical test methods ; Insulation resistance test of dielectrics for cables ; --- Part 1-103 . Electrical test methods Capacitance test of cables ; --- Part 1-104 . Electrical test methods ; Capacitance stability test of cables ; --- Part 1-105. Electrical test methods for withstand voltage test of cable dielectrics; --- Part 1-101 . Electrical test methods Voltage withstand test of cable sheathing ; --- Part 1-107 . Electrical test methods Vibrating cable charge level (mechanically induced noise) test; --- Part 1-108. Electrical test methods Characteristic impedance, phase delay, group delay, electrical length and propagation speed test; --- Part 1-110 . Electrical test method continuity ; --- Part 1-111 . Electrical test methods Stability test for phase constants ; --- Part 1-112. Electrical test methods Return Loss (Impedance Consistency) test; --- Part 1-113 . Electrical test method attenuation constant test ; --- Part 1-114 . Electrical test methods Inductors ; --- Part 1-115. Electrical test method impedance uniformity (pulse/step function return loss) test; --- Part 1-116 . Electrical test methods TDR method measuring characteristic impedance ; --- Part 1-119 . Electrical test methods RF power rating ; --- Part 1-122. Electrical test methods - Cross-talk test between coaxial cables; This part is part 1-108 of GB/T 17737. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This section uses the translation method equivalent to the use of IEC 61196-1-108.2011 "coaxial communication cable Part 1-108. Electrical test methods Characteristic impedance, phase delay, group delay, electrical length, and propagation velocity test." The Chinese documents that have a consistent correspondence with the normatively quoted international documents in this section are as follows. ---GB/T 17737.103-2018 Coaxial communication cables Part 1-103. Electrical test methods Capacitance test of cables (IEC 61196-1.2015, IDT). This section made the following editorial changes. --- Correct "τg(f) --- group velocity at frequency f" to "τg(f) --- group delay at frequency f" (see 6.2); --- Correct "τp(f) --- phase velocity at frequency f" to "τp(f) --- phase delay at frequency f" (see 6.2); --- Correct the "Distribution parameters R', L', G', and L'" of the transmission line to "Distribution parameters R', L', G', and C' of the transmission line" (see Appendix A). Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume responsibility for identifying these patents. This section 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 Standardization Technical Committee for High Frequency Cables and Connectors for Electronic Equipment (SAC/TC190). This section was drafted by the 23rd Institute of China Electronics Technology Corporation. The main drafters of this section. Yin Haicheng, Fang Xu and Tian Xin. Coaxial communication cable Part 1-108. Electrical Test Methods Characteristic impedance, phase delay, group delay, electrical length, and Propagation speed test

1 Scope

This part of GB/T 17737 applies to coaxial communication cables. It specifies the characteristic impedance and phase of the coaxial cable used in the communication network. Test methods for bit delay, group delay, electrical length, and propagation speed. Appendix A specifies the procedures for measuring the phase discretization of coaxial cables.

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 version (including all amendments) applies to this document. GB/T 17737.1-2013 Coaxial telecommunication cable Part 1. General specifications General, definitions and requirements (IEC 61196-1.2005, IDT) IEC 61196-1-103 Coaxial communication cables Part 1-103. Electrical test methods Capacitance test of cables (Coaxialcom- municationcables-Part 1-103.Electricaltestmethods-Testforcapacitanceofcable)

3 Terms and definitions

The terms and definitions defined in GB/T 17737.1-2013 apply to this document.

4 parameters

The following parameters can be derived from the phase constant β of the cable. Group delay. Τg= Dβ Dω ≈ Δβ Δω (1) Phase delay. Τp=βω (2) transmission speed. v= Τp (3) Relative propagation speed. Vr= c = Τp×c Lmech Le (4) Electric length. Le=lmech×τp×c (5)
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