IEC IEC 61196-1-128 Edition 1.02025-08 INTERNATIONAL STANDARD Coaxialcommunicationcables Part 1-128:Electrical test methods-Polarization directivityof radiating cable IEC 61196-1-128:2025-08(en) ICS33.120.10 ISBN 978-2-8327-0654-1 THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright2025IEC,Geneva,Switzerland IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigendum or an amendment might have been published. IECpublications search- IEC Products&ServicesPortal-products.iec.ch webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the The advanced search enables to find IEC publications by a publications previews, graphical symbols and the glossary. variety of criteria (reference number, text, technical With a subscription you wili always have access to up to date committee, ...)..It also gives. information on projects. content tailored to your needs. replaced and withdrawn publications. Electropedia-www.electropedia.org IECJustPublished-webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology. Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English details all new publications released. Available online and and French, with equivalent terms in 25 additional languages. once a month by email. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre:[email protected]. Warning!Makesurethatyouobtained thispublicationfromanauthorizeddistributor. IEC61196-1-128:2025?IEC:2025 CONTENTS FOREWORD. Scope. 1 5 2 Normative references. 5 3 Terms and definitions 5 4 Test arrangements. 4.1 General. 4.2 Free-space arrangement. 6 4.3 Ground-level arrangement... 5 Test equipment. .14 5.1 Signal generator. .14 5.2 Receiver 14 5.3 Trolley 14 5.4 Antenna 5.5 Load. 5.6 Connecting cables and connectors 14 5.7 Data collection system and calculations 6 Test conditions. .15 7 Test methods.. 16 7.1 General.. 7.2 Synchronoustestmethodforcompletesample 7.2.1 Test sample(TS)preparation.. 16 7.2.2 Test procedure... 16 7.3 Separatedtestmethodforcompletesample 17 7.3.1 Testsample(TS)preparation.. 7.3.2 Test procedure... 17 7.4 Synchronous test method for segmented samples. 7.4.1 Test sample(TS)preparation... 7.4.2 Test procedure... 7.5 Separated test method for segmented samples. 19 7.5.1 Test sample(TS)preparation 19 7.5.2 Test procedure. 19 8 Requirement.. 19 9 Test report 19 Figure 1-Free-space arrangement with one dual-polarized half-wavelength dipole antenna..... Figure 2-Free-space arrangement with two half-wavelength dipole antennas.. Figure 3 - Free-space arrangement with one half-wavelength dipole antenna ..... Figure 4-Antenna orientations with free-space arrangement.. Figure 5-Ground-level arrangement with one dual-polarized half-wavelength dipole antenna... Figure 6-Ground-level arrangement with two half-wavelength dipole antennas.. IEC61196-1-128:2025@IEC:2025 Figure 7- Ground-level arrangement with one half-wavelength dipole antenna. ..13 Figure 8-Antenna orientations with ground-level arrangement ...13 Figure 9 - Segmented test sa