GB/T 17737.119-2024Coaxial communication cables - Part 1-119: Electrical test methods - RF power for coaxial cables and cable assemblies (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting:

This document is part 1-119 of GB/T 17737 "Coaxial communication cables": GB/T 17737 has published the following parts:

--- Part 1: General specifications General principles, definitions and requirements:

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

- Part 1-101: Electrical test methods Conductor DC resistance test;

- 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 Capacitance stability test of cables;

- Part 1-105: Electrical test methods - Withstand voltage test for cable dielectrics;

- Part 1-106: Electrical test methods - Withstand voltage test for cable sheath;

- Part 1-107: Electrical test methods Cable microphonic charge level (mechanically induced noise) test;

- Part 1-108: Electrical test methods Characteristic impedance, phase delay, group delay, electrical length and propagation velocity tests;

- Part 1-112: Electrical test methods Return loss (impedance consistency) test;

- Part 1-113: Electrical test methods attenuation constant test;

- 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 test methods;

- Part 1-201: Environmental test methods - Cold bending performance test of cables;

- Part 1-203: Environmental test methods Water penetration test for cables;

- Part 1-205: Environmental test methods Solvent and contamination liquid resistance test;

- Part 1-301: Mechanical test methods Ovality test;

- Part 1-302: Mechanical test methods eccentricity test;

- Part 1-308: Mechanical test methods - Tensile strength and elongation test of copper-clad metals;

- Part 1-310: Mechanical test methods - Tests on torsional properties of copper-clad metals;

- Part 1-313: Mechanical test methods Adhesion of dielectric and sheath;

- Part 1-314: Mechanical test methods Bending test for cables - Part 1-316: Mechanical test methods Maximum tensile test for cables;

- Part 1-317: Mechanical test methods Cable compression test - Part 1-318: Mechanical test methods Thermal properties test;

- Part 1-324: Mechanical test methods Cable abrasion resistance test;

- Part 1-325: Mechanical test methods Wind-induced vibration test:

--- Part 3: Sectional specification for coaxial cables for local area networks:

--- Part 4: Sectional specification for leaky cables:

--- Part 5: Sectional specification for trunk and distribution cables for CATV:

--- Part 8: Sectional specification for polytetrafluoroethylene insulated semi-flexible cables:

- Part 8-1: Blank detail specification for polytetrafluoroethylene insulated semi-flexible cables:

--- Part 9: Sectional specification for flexible radio frequency coaxial cables:

--- Part 10: Sectional specification for semi-rigid cables with fluoropolymer insulation:

--- Part 11: Sectional specification for polyethylene insulated semi-rigid cables:

This document modifies the use of IEC 61196-1-119:2023 "Coaxial communication cables Part 1-119: Electrical test methods for coaxial cables and RF Power in Cable Assemblies:

The technical differences between this document and IEC 61196-1-119:2023 and their reasons are as follows:

--- The conditions for simplifying formula (5) to formula (6) are clarified, and "when alphaf1<=1 and alphaf2<=1, or |alphaf1-alphaf2|<=0:5dB or <= 0:5dB/m" is changed to "When alphaf1<=1dB and alphaf2<=1dB, or |alphaf1-alphaf2|<=0:5dB or |alphaf1-alphaf2|<= 0:5dB/m" to avoid ambiguity;

--- Changed the short-circuit connection position in Figure A:1 to avoid ambiguity:

The following editorial changes were made to this document:

--- Move IEC 61196-1-113, which is not normatively referenced in the text, from Chapter 2 to the references;

--- Corrected the units of symbols in formula (2), formula (3) and formula (4), and changed the units of Pi, Pf, Pg, P, and P0 from "decibel (dB)" to "decibels (dB)":

Corrected to "milliwatt decibel (dBm)", the unit of power is an absolute quantity;

--- Corrected the sign of the reference power in formula (4) and changed "Po" to "P0";

--- Corrected the sign of the internal conductor temperature in Chapter 8, and corrected "ti" and "tiX" to "Ti" and "TiX" to keep the context consistent;

--- Corrected the temperature unit in 8:2:1b) and changed "15K" to "15°C" to keep the context consistent;

--- Corrected the subscript format of symbols in formula (5) and formula (6), corrected "Pif1" and "Pif2" to "Pf1" and "Pf2", and the symbol description was not changed:

It is the incident power;

--- Corrected the signs in formula (5), formula (6) and A:2, and corrected "alphaf1" and "alphaf2" to "alphaf1" and "alphaf2";

--- Deleted the duplicate paragraphs in 8:2:1;

--- Corrected the description of the symbol "Co" in A:2, and corrected "Ci >1" and "Ci=1" to "Co >1" and "Co=1";

--- Added the description of the symbol Pd in A:2, which appears in formula (A:13);

--- Corrected the subscript format of symbols in formula (A:5), correcting "alphai" and "fi" to "alphai" and "fi";

--- Corrected formula (A:8), changed "sigmai" in the numerator of formula Ao to "sigmao", and corrected the symbol explanation "A" in the formula to "a", consistent with the symbol description;

--- Corrected the symbols in formula (A:12) and changed "K1" to "Ki" to be consistent with the symbol description:

Introduction

Coaxial communication cables have the advantages of low transmission loss and good anti-electromagnetic interference performance, and are widely used in various communications, electronic equipment and External information transmission lines are used in fields such as communications, radio and television, radar, electronic countermeasures, and data buses:

GB/T 17737 "Coaxial Communication Cable" includes the terminology, design, materials, test methods, and various coaxial cables:

The cable structure and material requirements, technical requirements, quality assurance regulations, packaging, transportation, storage and engineering use data: GB/T 17737 Various mechanical test method standards, GB/T 17737.3~GB/T 17737:× are various product specifications: When compiling product specifications, refer to the general General requirements of the specification, and related test method standards:

GB/T 17737 is intended to consist of the following parts:

--- Part 1: General specifications General principles, definitions and requirements: The purpose is to specify the general principles, definitions and test methods for coaxial cables and requirements:

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

- Part 1-101: Electrical test methods Conductor DC resistance test;

- 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 Capacitance stability test of cables;

- Part 1-105: Electrical test methods - Withstand voltage test for cable dielectrics;

- Part 1-106: Electrical test methods - Withstand voltage test for cable sheath;

- Part 1-107: Electrical test methods Cable microphonic charge level (mechanically induced noise) test;

- Part 1-108: Electrical test methods Characteristic impedance, phase delay, group delay, electrical length and propagation velocity tests;

- Part 1-110: Electrical test methods continuity test;

- Part 1-111: Electrical test methods - Phase constant stability test;

- Part 1-112: Electrical test methods Return loss (impedance consistency) test;

- Part 1-113: Electrical test methods attenuation constant test;

- Part 1-114: Electrical test methods Inductance test;

- Part 1-115: Electrical test methods Impedance uniformity (pulse/step function return loss) test;

- Part 1-116: Electrical test methods - Impedance measurement using the time domain reflectometry (TDR) method;

- 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 1-123: Electrical test methods - Attenuation test for leaky cables;

- Part 1-124: Electrical test methods - Coupling loss test for leaky cables;

- Part 1-125: Electrical test methods - Tests on equivalent relative dielectric constant and equivalent dielectric loss factor;

- Part 1-126: Electrical test methods corona voltage test;

- Part 1-200: General requirements for environmental test methods;

- Part 1-201: Environmental test methods - Cold bending performance test of cables;

- Part 1-203: Environmental test methods Water penetration test for cables;

- Part 1-205: Environmental test methods Solvent and contamination liquid resistance test;

- Part 1-206: Environmental test methods - Climate sequence test for cables;

- Part 1-208: Environmental test methods longitudinal pressure withstand;

- Part 1-209: Environmental test methods thermal cycling;

- Part 1-212: Environmental test methods UV stability;

- Part 1-215: Environmental test methods for cable aging at high temperatures;

- Part 1-301: Mechanical test methods Ovality test;

- Part 1-302: Mechanical test methods eccentricity test;

- Part 1-303: Mechanical test methods Silver and tin coating thickness test;

- Part 1-304: Mechanical test methods for impact resistance;

- Part 1-305: Mechanical test methods for solderability and resistance to soldering heat;

- Part 1-308: Mechanical test methods - Tensile strength and elongation test of copper-clad metals;

- Part 1-310: Mechanical test methods - Tests on torsional properties of copper-clad metals;

- Part 1-313: Mechanical test methods Dielectric and sheath adhesion;

- Part 1-314: Mechanical test methods - Bending test for cables;

- Part 1-316: Mechanical test methods Maximum tensile test for cables;

- Part 1-317: Mechanical test methods Cable compression test;

- Part 1-318: Mechanical test methods Thermal properties test;

- Part 1-324: Mechanical test methods Cable abrasion resistance test;

- Part 1-325: Mechanical test methods Wind-induced vibration test:

--- Part 3: Sectional specification for coaxial cables for local area networks: The purpose is to establish the characteristics and versatility of coaxial communication cables for local area networks performance requirements, quality assessment procedures, tests and test methods, and recommended ratings:

--- Part 4: Leaky cable section specification: The purpose is to establish the characteristics and general performance requirements, quality evaluation Specified procedures, tests and test methods, and recommended ratings:

--- Part 5: Sectional specification for trunk and distribution cables for CATV: The purpose is to establish the specifications for CATV trunk and CATV distribution cables:

Characteristics and general performance requirements, quality assessment procedures, tests and test methods, and recommended ratings for coaxial communications cables:

--- Part 6: Sectional specification for CATV drop cables: The purpose is to establish the characteristics and general use of CATV drop line coaxial communication cables:

Performance requirements, qualification procedures, tests and test methods, and recommended ratings:

--- Part 7: Sectional specification for cables for BCT: The purpose is to establish the characteristics and general performance requirements of coaxial communication cables for BCT, Quality assessment procedures, test and test methods, and recommended ratings:

--- Part 8: Sectional specification for polytetrafluoroethylene insulated semi-flexible cables: The purpose is to establish polytetrafluoroethylene insulated semi-flexible coaxial communication Characteristics and general performance requirements for cables, quality assessment procedures, tests and test methods, and recommended ratings:

- Part 8-1: Blank detail specification for polytetrafluoroethylene insulated semi-flexible cables:

--- Part 9: Sectional specification for flexible radio frequency coaxial cables: The purpose is to establish the characteristics and versatility of flexible radio frequency coaxial communication cables performance requirements, quality assessment procedures, tests and test methods, and recommended ratings:

--- Part 10: Sectional specification for semi-rigid cables with fluoropolymer insulation: The purpose is to establish the fluoropolymer insulated semi-rigid coaxial communication cables Characteristics and general performance requirements, quality assessment procedures, tests and test methods, and recommended ratings of cables:

--- Part 11: Sectional specification for polyethylene insulated semi-rigid cables: The purpose is to establish the characteristics of polyethylene insulated semi-rigid coaxial communication cables and general performance requirements, quality assessment procedures, tests and test methods, and recommended ratings:

--- Part 13: Sectional specification for silica insulated semi-rigid cables: The purpose is to specify the characteristics of silica insulated semi-rigid coaxial cables and general performance requirements, quality assessment procedures, tests and test methods, and recommended ratings:

Coaxial communication cables Part 1-119: Electrical tests Methods for RF Power in Coaxial Cables and Cable Assemblies

1 Scope

This document describes the RF power rating and power withstand tests for RF coaxial cables and cable assemblies at specified frequencies, temperatures and altitudes:

method:

This document applies to RF coaxial cables and cable assemblies:

2 Normative references

This document has no normative references:

3 Terms and definitions

The following terms and definitions apply to this document:

The URLs for terminology databases used for standardization maintained by ISO and IEC are as follows:

---ISO online browsing platform: https://www:iso:org/obp 3.1 Rated power at specified frequencies and standard environmental conditions, when the cable assembly is terminated with a load consistent with the characteristic impedance, it can continuously carry no more than the maximum the maximum allowable operating voltage does not exceed the input power of the maximum internal conductor temperature:

Power Withstanding

The ability of RF coaxial cables and cable assemblies to carry the power specified in the relevant specifications at specified temperature, altitude and frequency:

Average power average power the energy conversion rate of RF coaxial cables and cable assemblies is the average over multiple RF waveform cycles at specified frequency, temperature, and altitude:

Mean:

Peak power at the specified temperature and altitude, the pulse duration of the injected RF coaxial cable and cable assembly within one period T is tau, and the duty cycle is R maximum RF power Pmax:

NOTE: The relationship between duty cycle, pulse duration and period is shown in Figure 1 and expressed by formula (1):