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IEC 60728-4-ed.3.0
Cable networks for television signals, sound signals and interactive services - Part 4: Passive wideband equipment for coaxial cable networks
STANDARD published on 10.8.2007
The information about the standard:
Designation standards: IEC 60728-4-ed.3.0
Publication date standards: 10.8.2007
SKU: NS-411135
The number of pages: 66
Approximate weight : 198 g (0.44 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Cabled distribution systemsTelevision and radio broadcasting
Annotation of standard text IEC 60728-4-ed.3.0 :
IEC 60728-4:2007 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. 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. This third edition cancels and replaces the second edition published in 2000, of which it constitutes a technical revision. It includes the following significant technical changes: Subclause 3.1 includes several new or modified definitions. Clause 4 includes added test methods for attenuation, isolation, through-loss, group delay variation, amplitude frequency response and two carrier intermodulation measurements for second- and third-order products. Clause 5 includes updated and new performance requirements. La CEI 60728-4:2007 sapplique aux prises dusager, aux repartiteurs et aux derivateurs, ainsi quaux materiels passifs a une et a plusieurs bornes comprenant des filtres, des attenuateurs, des egalisateurs, des isolateurs galvaniques, des injecteurs dalimentation, des jonctions de cables, des resistances de bouclage et des points de livraison, mais ne sapplique pas aux cables coaxiaux et aux cordons de raccordement. La presente norme: - couvre la gamme de frequences de 5 MHz a 3 000 MHz; - identifie les exigences de performance pour certains parametres; - enonce les exigences de publication des donnees pour certains parametres; - stipule des methodes de mesure; - introduit des exigences minimales definissant les classes de qualite. Cette troisieme edition annule et remplace la deuxieme edition parue en 2000, dont elle constitue une revision technique. Elle contient les modifications techniques significatives suivantes: Le paragraphe 3.1 comporte plusieurs definitions nouvelles ou modifiees. LArticle 4 comporte des methodes dessai supplementaires pour lattenuation, le decouplage, lattenuation de passage, la variation de temps de propagation de groupe, la reponse amplitude-frequence et deux mesures dintermodulation de porteuse pour les produits du deuxieme et du troisieme ordre. LArticle 5 comporte des exigences de performance nouvelles et mises a jour.
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