GB/T 17737.4-2025Coaxial communication cables - Part 4: Sectional specification for leaky cables (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 4 of GB/T 17737 "Coaxial Communication Cables". GB/T 17737 has the following parts published.

---Part 1: General Specifications, Definitions, and Requirements.

- Part 1-100.General requirements for electrical test methods;

- Part 1-101.Electrical Test Methods - DC Resistance Test of Conductors;

- Part 1-102.Electrical Test Methods - Cable Dielectric Insulation Resistance Test;

- Part 1-103.Electrical Test Methods - Capacitance Test of Cables;

- Part 1-104.Electrical Test Methods - Capacitive Stability Test of Cables;

- Part 1-105.Electrical Test Methods - Withstand Voltage Test of Cable Dielectric;

- Part 1-106.Electrical Test Methods - Withstand Voltage Test of Cable Sheath;

- Part 1-107.Electrical Test Methods. Cable Flicker Charge Level (Mechanical Induced Noise) Test;

- Part 1-108.Electrical test methods for characteristic impedance, phase delay, group delay, electrical length, and propagation velocity tests;

- Part 1-112.Electrical Test Methods - Return Loss (Impedance Compliance) Test;

- Part 1-113.Electrical test methods for attenuation constant testing;

- Part 1-115.Electrical Test Methods - Impedance Uniformity (Pulse/Step Function Return Loss) Test;

- Part 1-119.Electrical test methods for radio frequency power of coaxial cables and cable assemblies;

- Part 1-122.Electrical Test Methods - Crosstalk Test Between Coaxial Cables;

- Part 1-200.General requirements for environmental testing methods;

- Part 1-201.Environmental testing methods for cold bending performance of cables;

- Part 1-203.Environmental Testing Methods - Water Leakage Test for Cables;

- Part 1-205.Environmental testing methods for resistance to solvents and contaminated liquids;

- Part 1-301.Mechanical testing methods for ellipticity testing;

- Part 1-302.Mechanical testing methods for eccentricity testing;

- Part 1-308.Mechanical testing methods for testing the tensile strength and elongation of copper-clad metals;

- Part 1-310.Mechanical testing methods - Torsional properties test of copper-clad metals;

- Part 1-313.Mechanical testing methods for adhesion of media and sheaths;

- Part 1-314.Mechanical Test Methods - Bending Test of Cables - Part 1-316.Mechanical Test Methods - Maximum Tensile Strength Test of Cables;

- Part 1-317.Mechanical Test Methods - Cable Compression Test - Part 1-318.Mechanical testing methods for thermal performance testing;

- Part 1-324.Mechanical Test Methods - Cable Abrasion Resistance Test;

- Part 1-325.Mechanical testing methods. wind-induced vibration test.

---Part 3: Specifications for Coaxial Cables for Local Area Networks

---Part 4: Specifications for Leaky Cables

---Part 5: Specifications for CATV trunk and distribution cables.

---Part 8: Specifications for Polytetrafluoroethylene Insulated Semi-Flexible Cables.

- Part 8-1.Blank detailed specification for polytetrafluoroethylene insulated semi-flexible cables.

---Part 9: Specifications for Flexible Radio Frequency Coaxial Cables

---Part 10: Specifications for Fluoropolymer Insulated Semi-rigid Cables

---Part 11: Specifications for Polyethylene Insulated Semi-rigid Cables this document supersedes GB/T 17737.4-2013 "Coaxial Communication Cables - Part 4: Leaky Cable Specifications", and is consistent with GB/T 17737.4-Compared to 2013, aside from structural adjustments and editorial changes, the main technical changes are as follows.

---Added terms related to leaky cable classification, characteristic parameters, etc. (see Chapter 3);

---Added "Model Number and Identification" (see Chapter 4);

---Added performance parameters such as "link loss", "cold bending", and "inner conductor/insulation adhesion" and corresponding test methods (see Chapter 5);

---The sections "Preferred Ratings and Characteristics" and "Cable Marking" have been removed (see Chapters 5 and 6.1 of the 2013 edition);

---The requirements and test methods for "flammability performance" have been changed, adopting the requirements of the corresponding cable flammability performance classification and the general rules for flame-retardant cables (see...).

5.2.6 (7.5 in the 2013 version)

---Added requirements and test methods related to the environmental characteristics of cables (see 5.2.7);

---The inspection rules have been changed (see Chapter 6, Chapter 8 in the 2013 edition);

---Packaging, labeling, transportation, and storage requirements have been changed, with additional specific provisions added (see Chapter 7, Chapter 9 of the 2013 edition);

---Added regulations on the use of engineering data (see Chapter 8);

---The attenuation constant measurement method has been changed, an insertion loss measurement method has been added, and a vector network analyzer and signal source have been added.

Specific calibration, measurement, and calculation requirements for rate meter measurements (see Appendix A, Appendix A of the 2013 edition);

---The representation of calculation results in the coupling loss measurement method has been changed, further clarifying the three-dimensional average value of local coupling loss.

Representation method (see Appendix B, Appendix B of the 2013 edition);

---Added "Methods for measuring link loss" (see Appendix C).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This document is under the jurisdiction of the National Technical Committee on Standardization of High-Frequency Cables and Connectors for Electronic Equipment (SAC/TC190).

Introduction

Radio frequency coaxial cables have advantages such as low transmission loss and good electromagnetic interference resistance, and are widely used in various communication and electronic equipment.

External information transmission lines are used in fields such as communications, broadcasting, radar, electronic warfare, and data buses. Leaky cables also serve as signal transmission lines.

Transmission lines and antennas are primarily used in railways, urban rail transit, and highway tunnels, but can also be used in indoor distribution systems, mines, and workshops/warehouses.

Communication in enclosed spaces, as well as security and surveillance around buildings and residences.

GB/T 17737 "Coaxial Communication Cables" covers the terminology, design, materials, test methods, and various types of coaxial communication cables.

The requirements for cable structure and materials, technical requirements, quality assurance regulations, packaging, transportation, storage, and engineering usage data, etc. GB/T 17737 Mechanical testing methods standards, GB/T 17737.3~GB/T 17737.×, are specifications for various products. Product specifications reference the general specifications during their development.

General requirements and relevant test method standards.

GB/T 17737 is proposed to consist of the following parts.

---Part 1: General Specifications, Definitions, and Requirements. This section aims to specify the general principles and definitions for the design and testing methods of coaxial cables.

and requirements.

Sexual testing methods.

Verification method.

Verification method.

---Part 3: Specifications for Coaxial Cables for Local Area Networks. The purpose is to define the characteristics and versatility of coaxial communication cables for local area networks.

Requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 4: Specifications for Leaky Cables. The purpose is to specify the characteristics and general performance requirements, quality assessment procedures, and other specifications for leaky cables.

Test and experimental methods and recommended ratings.

---Part 5: Specifications for CATV Trunk and Distribution Cables. The purpose is to specify the trunk and distribution cables used for cable television (CATV) trunk lines and distribution cables.

Characteristics and general performance requirements, quality assessment procedures, testing and evaluation methods, and recommendations for CATV coaxial communication cables.

The rated value.

---Part 6: CATV Drop Cable Specification. The purpose is to specify the characteristics and general specifications of CATV drop cables and coaxial communication cables.

Performance requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 7: Specifications for Cables Used in BCT. The purpose is to specify the characteristics and general performance requirements of coaxial communication cables used in BCT.

Quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 8: Specifications for PTFE Insulated Semi-Flexible Cables. The purpose is to specify the specifications for PTFE insulated semi-flexible coaxial communication cables.

Cable characteristics and general performance requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

- Part 8-1.Blank Detailed Specification for PTFE Insulated Semi-Flexible Cables. The purpose is to specify the specifications for PTFE insulated semi-flexible cables.

Detailed specifications and requirements for flexible coaxial communication cables.

---Part 9: Specifications for Flexible Radio Frequency Coaxial Cables. The purpose is to define the characteristics and versatility of flexible radio frequency coaxial communication cables.

Requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 10: Specifications for Fluoropyramid Insulated Semi-rigid Cables. The purpose is to specify the specifications for fluoropolymer insulated semi-rigid coaxial communication cables.

Cable characteristics and general performance requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 11: Specifications for Polyethylene Insulated Semi-rigid Coaxial Cables. The purpose is to specify the characteristics of polyethylene insulated semi-rigid coaxial communication cables.

And general performance requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

---Part 13: Specifications for Silica-Insulated Semi-Rigid Coaxial Cables. The purpose is to specify the characteristics of silica-insulated semi-rigid coaxial cables.

And general performance requirements, quality assessment procedures, testing and evaluation methods, and recommended ratings.

coaxial communication cable Part 4: Specifications for Leaky Cables

1 Scope

This document defines the terminology and definitions for leaky cables, specifies product models and markings, technical requirements and inspection methods, inspection rules, and packaging.

Packaging, labeling, transportation and storage, engineering usage data, etc.

This document applies to applications using mobile communication systems, wireless local area networks, wireless remote control systems, wireless alarm systems, wireless control systems, etc.

Leaking cable.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2423.45-2012 Environmental Testing – Part 2: Test Methods – Test Z/ABDM. Climate Sequence GB/T 2951.11-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Fibers - Part 11: General Test Methods Thickness and dimensional measurement, mechanical property testing GB/T 2951.12-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Fibers - Part 12: General Test Methods Thermal aging test method GB/T 2951.41-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Fibers - Part 41: Polyethylene and Polypropylene Special test methods for mixtures. environmental stress cracking test, melt index measurement method, direct combustion method for measuring carbon black and...

(or) Thermogravimetric analysis (TGA) to measure carbon black content; microscopic assessment of carbon black dispersion in polyethylene.

GB/T 3048.10 Electrical Performance Test Methods for Wires and Cables - Part 10: Spark Test for Extruded Sheaths GB/T 3880 (all parts) Aluminum and aluminum alloy plates and strips for general industrial use GB/T 3953-2024 Electrical round copper wire GB/T 4909.2 Bare wires - Test methods - Part 2: Dimensional measurement GB/T 4910-2022 Tinned Round Copper Wire GB/T 5019.10 Mica-based insulating materials - Part 10: Mica tape for fire-resistant safety cables GB/T 6995.1 Methods for Identification Marking of Wires and Cables Part 1: General Provisions GB/T 8815 Flexible polyvinyl chloride plastic for wires and cables GB/T 11091 Copper foil and tape for cables GB/T 15065 Black polyethylene plastic for wires and cables GB/T 17737.1-2013 Coaxial Communication Cables - Part 1: General Specifications, Definitions and Requirements GB/T 17737.101 Coaxial communication cables – Part 1-101.Electrical test methods – DC resistance test of conductors GB/T 17737.102 Coaxial Communication Cables - Part 1-102.Electrical Test Methods - Test of Dielectric Insulation Resistance of Cables GB/T 17737.103 Coaxial Communication Cables - Part 1-103.Electrical Test Methods - Capacitance Test of Cables GB/T 17737.105 Coaxial Communication Cables - Part 1-105.Electrical Test Methods - Withstand Voltage Test of Cable Dielectric GB/T 17737.108 Coaxial Communication Cables - Part 1-108.Electrical Test Methods - Characteristic Impedance, Phase Delay, Group Delay, Electrical...

Length and propagation speed test