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IEC 60728-5:2007

Cable networks for television signals, sound signals and interactive services - Part 5: Headend equipment

General information
Withdrawn from 09.12.2015
Directives or regulations
None

Standard history

Status
Date
Type
Name
09.12.2015
Main
It defines the characteristics of equipment used in the headends of terrestrial broadcast and satellite receiving systems (without satellite outdoor units and without those broadband amplifiers in the headend as described in IEC 60728-3). The satellite outdoor units for FSS are described in ETSI ETS 300 158, for BSS in ETSI ETS 300 249. Test methods for both types (FSS and BSS) of satellite outdoor units are laid down in ETSI ETS 300 457. This edition includes the following significant technical changes with respect to      the previous  edition: Revised  title  and  scope   Clause  3, several  new  terms   and  definitions Subclause 4.1, Methods  of measurement  for digitally modulated signals Subclause 4.6.2, RF signal-to-noise ratio (SD,RF/N) for digitally modulated signals Subclause 4.8.2, Procedure      for the measurement  of group delay variation on DVB channel converters Subclause 4.9, Phase noise       of  an  RF carrier  Subclause 4.15,  Decoding margin  (Teletext).   Annex D,   Special national conditions.   Annex E, Correction factors  for noise.  Annex F,   Digital  signal level and   bandwidth.  Annex G,   Minimum  frequency distance of  converted satellite signals in the IF  range.   Annex H,  Measurement  errors which  occur due to mismatched equipment.    .Annex  I, Correction  factor  for spectrum   analyser

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