BS EN IEC 60728-101-2:2023

1   Scope

  This part of [IEC 60728‑101](/search?q=IEC%C2%A060728%E2%80%91101)
   provides the minimum performance requirements to be fulfilled in operation at the
   system outlet  or terminal input and describes the summation criteria for the impairments present
  in the received signals and those produced by the  CATV / MATV / SMATV  cable network, including individual receiving systems. 

    NOTE 1  When a change of signal format is made at the  headend , the summation of the impairments does not apply (see also Clause 6). 

In a building divided into apartment blocks, the signals received by the  antennas  are distributed by the  MATV / SMATV  cable network up to the  home network  interface ( HNI ); the television signals are then distributed (inside the home) by  home networks  ( HN ) of various types up to the  system outlet  or terminal input. The cable network can support two-way operation, from the  system outlet  (or terminal input) towards the  headend . 
The  home network  can use coaxial cables, balanced pair cables, fibre optic cables (glass or plastic)
  and also wireless links inside a room (or a small number of adjacent rooms) to replace
  wired cords. 

  
  This part of [IEC 60728](/search?q=IEC%C2%A060728)
   is limited to downstream <span class="abbrev...