What is BS IEC 60728-12 - Cable networks for television signals, sound signals and interactive services about?
BS IEC 60728 is a series on cable networks for television signals, sound signals and interactive services. Cable networks for television signals, sound signals and interactive services are used to connect one network device to other network devices or to connect two or more computers to share printers, scanners etc. BS IEC 60728-12 applies to the radiation characteristics and immunity to electromagnetic disturbance of cable networks for television signals, sound signals and interactive services and covers the frequency range 0,15 MHz to 3,5 GHz.
BS IEC 60728-12 specifies methods of measurement and EMC performance requirements under operating conditions (in situ) to ensure the ongoing EMC integrity of cable networks.
Note: Cable networks beyond the system outlets (e.g., the receiver lead, in simplest terms) that begin at the system outlet and end at the input to the subscriber's terminal equipment are not covered by BS IEC 60728-12.
Who is BS IEC 60728-12 - Cable networks for television signals, sound signals and interactive services for?
BS IEC 60728-12 on cable networks is useful for:
- Telecommunication equipment manufacturers
- Telecommunication component manufacturers
- Design engineers
- Quality control personnel
Why should you use BS IEC 60728-12 - Cable networks for television signals, sound signals and interactive services?
Cable networks and a wide range of radio services have to coexist. These include, for example, the emergency services, safety of life, broadcasting, aeronautical, radio navigation services and also land, mobile, amateur, and cellular radio services. Frequency ranges of typical safety of life services are listed in BS IEC 60728-12. Additional protection for certain services may be required by national regulations. BS IEC 60728-12 gives information on legal requirements in certain countries. BS IEC 60728-12 deals with cable networks including equipment and associated methods of measurement for headend reception, processing and distribution of television and sound signals, and for processing, interfacing, and transmitting all kinds of data signals for interactive services using all applicable transmission media.
These signals are typically transmitted in networks by frequency-multiplexing techniques. This includes, for instance, the regional and local broadband cable networks, extended satellite and terrestrial television distribution systems, individual satellite and terrestrial television receiving systems and all kinds of equipment, systems and installations used in such cable networks, distribution and receiving systems. The extent of BS IEC 60728-12 is from the antennas and/or special interfaces to the headend or other interface points to the network up to any terminal interface of the equipment on the customer's premises. Using BS IEC 60728-12 you can understand the radiation characteristics and immunity to electromagnetic disturbance of cable networks for television signals, sound signals and interactive services and covers the frequency range 0,15 MHz to 3,5 GHz.
What’s changed since the last update?
BS IEC 60728-12:2017 supersedes BS IEC 60728-12:2001. BS IEC 60728-12:2017 includes some technical changes with respect to BS IEC 60728-12:2001. These include:
- IEC 60728-12 with its methods of measurement and EMC performance requirements is explicitly dedicated to “under operating conditions (in situ)” to ensure the ongoing EMC integrity of cable networks
- The first intermediate frequency range (1st IF range) for satellite signal transmission was extended to cover now frequencies from 950 MHz up to 3 500 MHz
- The method of measurement and the requirements for in-band immunity were extended considering the new EMC environment due to the allocation of broadband wireless services in the frequency band 694 MHz to 862 MHz. As a consequence, the limits of in-band immunity were specified for analogue and additionally for digital signals in this frequency range
- The substitution method of measurement (power method) was deleted
- EMC measurements below 30 MHz were deleted
