Overview
IEC 60728-10:2014 is an international standard developed by the International Electrotechnical Commission (IEC) specifying system performance requirements for the return paths in cable networks. These cable networks are designed for television signals, sound signals, and interactive services, operating within frequency ranges from 5 MHz up to 85 MHz. However, when FM radio signals are included, the upper frequency limit is reduced to 65 MHz for conventional cable networks, while fiber-based networks may support higher frequencies.
This third edition, published in 2014, replaces the previous 2005 edition and incorporates essential updates reflecting state-of-the-art return path transmission technologies, including compatibility with DOCSIS 3.0 and EuroDOCSIS 3.0 standards. It also introduces revised and new measurement techniques key to assessing system performance accurately.
Key Topics
- Return Path Frequency Range: Defines operation between 5 MHz and 85 MHz, with adjustments for FM radio signal transmission.
- Measurement Methods: Detailed methodologies covering:
- Channel level measurement for digitally modulated carriers.
- Amplitude response variation.
- Signal-to-noise ratio (S/N).
- Multiple interference and impulse noise.
- Echo ratio, group delay variation, frequency error.
- Bit error ratio (BER) measurement.
- New techniques for Noise Power Ratio (NPR), 10-tone measurement, and Modulation Error Ratio (MER).
- System Performance Requirements: Focusing on analogue parameters influencing performance such as impedance, maximum signal level, and specific system criteria.
- Technical Revisions: Updates for emerging technologies including DOCSIS 3.0 and EuroDOCSIS 3.0, reflecting modern cable network demands.
Applications
- Cable Television Networks: Ensures reliable and transparent return path communication supporting interactive services and enhanced user experience.
- Broadband Cable Networks: Helps network engineers optimize upstream paths critical for data services following DOCSIS standards.
- Network Performance Testing: Defines standardized measurement procedures to assess noise levels, error ratios, and signal distortions in return paths.
- Network Design & Optimization: Supports telecommunications and broadcast engineers in system planning by defining performance targets to maintain signal integrity.
- Fibre-based Networks: Extends applicability to fiber optic infrastructures supporting higher return path frequencies.
- Quality Assurance: Provides operators with a benchmark for compliance testing and maintaining high-quality interactive and broadcast services.
Related Standards
- IEC 60728-1: General cable network requirements and system architecture.
- DOCSIS 3.0 and EuroDOCSIS 3.0: Specifications referenced for compatibility with cable modem standards governing upstream data communication.
- IEC 60728-2: Distribution network design and operational guidelines supporting the system performance aspects defined in Part 10.
- IEC 60728-11: Focuses on optical components and system performance for cable networks employing fiber technology.
- Other IEC Standards: Related to electrical and electronic test methods that assist in precise measurement of signal quality and network parameters.
By adhering to IEC 60728-10:2014, cable operators and network designers can ensure robust, high-performance upstream channels essential for interactive television, sound, and data services. This standard’s comprehensive measurement procedures and updated system requirements assist in maintaining system transparency, reducing noise and interference, and achieving compliance with modern transmission protocols. The document is vital for professionals managing cable network return paths aiming to deliver superior service quality in a competitive telecommunications landscape.
Open preview (PDF)Cable networks for television signals, sound signals and interactive services - Part 10: System performance of return paths
