EN 60728-4:2008 Cable networks for television signals@ sound signals and interactive services - Part 4: Passive wideband equipment for coaxial cable networks
European Committee for Electrotechnical Standardization（CENELEC）
Latest
EN 60728-4:2008
Scope
This part of IEC 60728 applies to system outlets, splitters and taps, passive single or multiple
port equipment comprising filters, attenuators, equalizers, galvanic isolators, power injectors,
cable splices, terminating resistors and transfer points, but excluding coaxial cables and
receiver leads (see 5.2).
This standard
? covers the frequency range 5 MHz to 3 000 MHz;
? identifies performance requirements for certain parameters;
? lays down data publication requirements for certain parameters;
? stipulates methods of measurements;
? introduces minimum requirements defining quality grades.
There are three grades for all passive equipment except system outlets where there is only
one.
Different networks require the same performance and, when integrating networks, upgrading
will be avoided.
Practical experience has shown that these three grades meet most of the technical
requirements necessary for supplying a minimum signal quality to the subscribers. This
classification should not be considered as a requirement but as information for users and
manufacturers on the minimum quality criteria of the material required to install networks of
different sizes. The system operator should select appropriate material to meet the minimum
signal quality at the subscriber's outlet and to optimize cost/performance, taking into account
the size of the network and local circumstances.
All requirements and published data should be understood as guaranteed values within the
specified frequency range and in well-matched conditions.
EN 60728-4:2008 history
2008EN 60728-4:2008 Cable networks for television signals@ sound signals and interactive services - Part 4: Passive wideband equipment for coaxial cable networks