IEC 60728-5:2015
Collections
International IEC standards
Publication date
December 2015
Number of pages
188 p.
Reference
IEC 60728-5:2015
IEC 60728-5:2015
December 2015
International standard
Current
Cable networks for television signals, sound signals and interactive services - Part 5: Headend equipment
IEC 60728-5:2015 specifies 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). It:- 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 (Q-grades). This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:- new text for the introduction, following the scope of IEC TC 100/TA 5;- introduction of IPTV to the scope;- headend specification for digital terrestrial TV signals according to the DVB-T2 standard;- headend specification for digital TV signals in cable networks according to the DVB-S2 standard.
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Sumary
Cable networks for television signals, sound signals and interactive services - Part 5: Headend equipment
IEC 60728-5:2015 specifies 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). It:
- 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 (Q-grades). This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- new text for the introduction, following the scope of IEC TC 100/TA 5;
- introduction of IPTV to the scope;
- headend specification for digital terrestrial TV signals according to the DVB-T2 standard;
- headend specification for digital TV signals in cable networks according to the DVB-S2 standard.
IEC 60728-5:2015 specifies 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). It:
- 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 (Q-grades). This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- new text for the introduction, following the scope of IEC TC 100/TA 5;
- introduction of IPTV to the scope;
- headend specification for digital terrestrial TV signals according to the DVB-T2 standard;
- headend specification for digital TV signals in cable networks according to the DVB-S2 standard.
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Replaced standards
(1)
IEC 60728-5:2007
August 2007
International standard
Cancelled
Cable networks for television signals, sound signals and interactive services - Part 5: Headend equipment
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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