IEC 60966-2-5:2016

Overview

IEC 60966-2-5:2016 is an international standard published by the International Electrotechnical Commission (IEC). It provides a detailed specification for radio frequency (RF) and coaxial cable assemblies specifically designed for radio and TV receivers. Covering the frequency range from 0 MHz to 1,000 MHz, this standard focuses on cable assemblies using IEC 61169-2 connectors, particularly the subfamily 9.52. The specification applies to flexible coaxial cables described in the IEC 61196 series.

This fourth edition updates previous versions by aligning return loss and insertion loss requirements with relevant cable types, introducing a triaxial method for measuring screening effectiveness as per IEC 62153-4-7, and removing screening class B.

Key Topics

• Frequency Range & Connectors
  Specification applies to cable assemblies operating from 0 to 1,000 MHz with characteristic impedance of 75 Ω. It uses IEC 61169-2 connectors, including straight and right-angled plug and socket variations.

• Cable Assembly Subfamily
  Details focus on subfamily 9.52 cable assemblies per IEC 61169-2, widely used in radio and TV receiver applications as described in IEC 60728-4.

• Electrical Performance Requirements

  • Return Loss: Minimum 20 dB for 5-400 MHz, 16 dB for 400-862 MHz, and 15 dB for 862-1,000 MHz.
  • Insertion Loss: Defined as less than 2×(0.0001 × f) + 0.4 dB per meter (f in MHz).
  • Screening Effectiveness: Transfer impedance less than 5 mΩ/m (5-30 MHz), screening attenuation greater than 85 dB (30-1,000 MHz) as per IEC 62153-4-7 triaxial method.

• Mechanical & Environmental Specifications
  Includes tensile strength requirements (>45 N), flexure endurance, flexing endurance, and cable crushing resistance (>700 N), alongside specified static and dynamic bend radii. The climatic category is rated 40/70/21, ensuring performance under varied environmental conditions.

• Marking & Identification
  Cable assemblies must be clearly marked with the IEC assembly type and screening class on the sheath, facilitating traceability and compliance verification.

• Testing and Qualification
  Qualification tests are described with periodicity guidelines including lot-by-lot inspections and periodic electrical and mechanical tests, ensuring consistent product reliability.

Applications

IEC 60966-2-5:2016 is critical for manufacturers, suppliers, and users involved in the production and deployment of RF coaxial cable assemblies for radio and television receivers. Typical applications include:

• Consumer Electronics
  Ensures consistent, high-quality cable assemblies connecting radio and television units, enabling reliable signal transmission up to 1 GHz.

• Broadcast and Cable Networks
  Useful in cable TV installations and radio broadcasting setups where flexible, screened RF coaxial cables are essential to maintain signal integrity and reduce interference.

• Test & Measurement
  Provides a reference for testing laboratories and certification bodies to validate cable assembly performance against international standards.

• Telecommunication Equipment
  Supports interconnection and cabling in telecommunication devices and systems where reliable RF signal transmission is required.

Related Standards

IEC 60966-2-5:2016 should be used in conjunction with several complementary IEC standards for comprehensive guidance on coaxial cable assemblies:

• IEC 60966-1:1999 – Generic specification with general requirements and test methods for RF and coaxial cable assemblies.
• 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 – Sectional specification for RF coaxial connectors of type 9.52 applicable in this standard.
• IEC 60728-4 – Related to cable networks for TV and sound signals including usage of cable assemblies described here.
• IEC 62153-4-7 – Methods for measuring transfer impedance and screening attenuation via triaxial method, applied for screening class assessments.

Practical Value

• Ensures consistent quality and performance of RF coaxial cable assemblies used in radio and TV receivers by defining strict electrical, mechanical, and climatic criteria.
• Helps manufacturers meet international compliance requirements, facilitating global market access and interoperability.
• Facilitates reliable signal transmission by standardizing return loss, insertion loss, and screening effectiveness to reduce noise and interference.
• Supports product traceability and quality assurance through clear marking and rigorous testing protocols.
• Enables industry stakeholders to apply uniform test methods, enhancing validation efficiency and minimizing product failures in the field.

By adhering to IEC 60966-2-5:2016, the industry ensures high-performance cabling solutions optimized for modern radio and television reception environments.