IEC 60966-2-4:2016

Overview

IEC 60966-2-4:2016 is an international standard published by the International Electrotechnical Commission (IEC) that provides detailed specifications for radio frequency (RF) and coaxial cable assemblies specifically designed for radio and TV receivers. Covering a frequency range from 0 MHz to 3,000 MHz, this standard focuses on flexible coaxial cables described within the IEC 61196 series and uses IEC 61169-2 9.52 connectors.

This fourth edition supersedes the previous 2009 version, introducing key technical updates including enhanced return loss and insertion loss requirements, revised screening effectiveness measurements using the IEC 62153-4-7 triaxial method, and the cancellation of screening class B. The standard is intended to ensure high performance, reliability, and electromagnetic compatibility of cable assemblies in consumer radio and television applications.

Key Topics

Cable Assemblies and Components

• Flexible coaxial cables: Defined according to IEC 61196 series, suited for radio and TV signal transmission.
• Connectors: Use of IEC 61169-2 9.52 type connectors (straight and right-angled plugs and sockets) ensuring consistent interface compatibility with receiver devices.
• Characteristic impedance: 75 Ω, standard for RF applications targeting television and radio reception.

Performance Parameters

• Frequency range: 0 MHz to 3,000 MHz, supporting a wide spectrum of broadcast frequencies.
• Return loss: Specifies reflection property requirements for frequency ranges up to 3 GHz, ensuring minimal signal reflection and improved signal integrity.
• Insertion loss: Limits signal attenuation per meter with a frequency-dependent formula, critical for maintaining strong signal strength over cable length.
• Screening effectiveness: Measured by transfer impedance and screening attenuation according to IEC 62153-4-7; screening class A remains to assure effective electromagnetic interference (EMI) shielding.
• Voltage proof and insulation resistance: Minimum voltage withstand of 1 kV and insulation resistance exceeding 10 MΩ to guarantee electrical safety and cable durability.

Mechanical and Durability Tests

• Tensile strength: Minimum 45 N force applied for 1 minute to verify cable mechanical integrity.
• Flexure and flexing endurance: Tests including 50 cycles of flexure and 20 cycles of flexing endurance combined with screening effectiveness checkpoints assure longevity during installation and use.
• Crushing resistance: Minimum crush force of 700 N to assess cable resilience against physical damage.

Marking and Identification

• Assemblies are marked on the cable sheath with IEC type and screening class, for instance:
  [IEC 60966-2-4](/search?q=IEC%2060966-2-4) – Screening class A – 2014

Applications

IEC 60966-2-4:2016 cable assemblies are primarily used for:

• Radio receivers and television receiver equipment connections, providing reliable transmission of RF signals up to 3 GHz.
• Consumer electronic devices requiring standardized 75 Ω coaxial connections with IEC 61169-2 compliant connectors.
• Passive coaxial cable networks delivering broadcast signals within homes and commercial environments.
• Installations demanding robust electromagnetic compatibility (EMC) performance to prevent interference in densely packed electronic environments.

These cable assemblies are suitable for applications described in IEC 60728-4 related to cable networks for TV and radio signal distribution involving passive wideband equipment.

Related Standards

For comprehensive compliance and design alignment, IEC 60966-2-4:2016 should be used in conjunction with:

• IEC 60966-1:1999: Generic specification for radio frequency and coaxial cable assemblies – general requirements and test methods.
• IEC 60966-2-1:2008: Sectional specification for flexible coaxial cable assemblies.
• IEC 60966-2-2:2003: Blank detail specification for flexible coaxial cable assemblies.
• IEC 61169-2: Specification for 9.52 mm coaxial RF connectors used in the assemblies.
• IEC 60728-4: Specifications relating to passive wideband equipment for coaxial cable networks.
• IEC 62153-4-7: EMC test methods for metallic communication cables, including transfer impedance and screening attenuation measurements via the triaxial method.

By aligning with these complementary documents, manufacturers and users can ensure robust performance, product interoperability, and compliance with international benchmarks for coaxial cable assemblies in radio and TV applications.

Keywords: IEC 60966-2-4, coaxial cable assemblies, radio frequency cables, TV receiver cables, IEC 61169-2 connectors, 0 MHz to 3000 MHz, return loss, insertion loss, screening effectiveness, EMC, coaxial connectors, cable assembly standards, IEC standards for RF cables, cable durability tests, electromagnetic compatibility, flexible coaxial cables