
The head R & S AVHE100, of Rohde & Schwarz, now also with DVB-S/DVB-S2 Rohde & Schwarz presentar en la feria BIT Broadcast 2014 todas las posibilidades para codificaci n y multiplexado que ofrece esta cabecera de dise o compacto e innovadoras tecnolog as.
Among the solutions that Rohde & Schwarz will present in BIT Broadcast 2014, en Madrid del 20 al 22 de mayo, destaca la cabecera AVHE100, una soluci n para la codificaci n y multiplexado que ofrece ahora a n m s funciones, as como un nuevo est ndar de radiodifusi n digital.
Tras su lanzamiento al mercado en oto o de 2012 con los est ndares DVB-T/DVB-T2, el R&S AVHE100 admite ahora tambi n DVB-S/DVB-S2. Esta cabecera se distingue de las soluciones convencionales por su dise o compacto y sus innovadoras tecnolog as, tales como R&S CrossFlowIP, que aumentan de forma extraordinaria su seguridad de funcionamiento.
Al contrario que las cabeceras convencionales, R&S AVHE100 integra todas las funciones esenciales para la codificaci n y multiplexado en muy pocos componentes de hardware, lo que la convierte en uno de los sistemas m s compactos del mercado. Sus componentes b sicos son la plataforma de procesamiento R&S AVS100 y el gateway de audio y v deo R&S AVG100.
En s lo dos unidades de altura, estos dos componentes se pueden configurar, por ejemplo, como cabecera DVB-S2 incluyendo varias entradas para se ales HD-SDI o sat lites, o como decodificadores y codificadores para hasta 6 programas HD y 10 SD, como multiplexores o tambi n como un sistema de administraci n de cabecera orientado al flujo de trabajo.
Todas las funciones para el procesamiento de se ales de audio y v deo han sido implementadas exclusivamente en forma de m dulos de software en la plataforma de procesamiento del R&S AVS100. La distribuci n de se ales y la comunicaci n interna de la cabecera est n totalmente basadas en IP. Esto simplifica la instalaci n y permite realizar la configuraci n y las actualizaciones del sistema de forma flexible en funci n de las necesidades del cliente. R&S AVHE100 es ideal para conexiones IP directas desde y hasta la cabecera. El gateway de audio y v deo convierte las se ales de sistemas anteriores, tales como SDI, ASI o AES, a IP ya en los l mites del sistema. Puede incorporar opcionalmente un receptor de se ales v a sat lite con m dulo decodificador.
La cabecera codifica tramas de v deo en los formatos H.264 y MPEG-2 en calidad profesional para la radiodifusi n y, opcionalmente, para consolidarlas en un multiplexado estad stico. Este eficaz procesamiento de las velocidades de transmisi n de datos hace posible la transmisi n de m s programas as como una mejor calidad de imagen. En el multiplexor DVB se agrega la informaci n relevante del programa.
El sistema de administraci n de cabecera integrado permite a los usuarios configurar, operar y monitorear los componentes individuales del sistema. Una interfaz gr fica de usuario claramente estructurada y orientada al flujo de trabajo - tambi n disponible en versi n de pantalla t ctil - simplifica la operaci n del sistema.
Redundancy
El exclusivo concepto de redundancia garantiza una tolerancia a errores de operaci n extremadamente elevada. La funci n exclusiva R&S CrossFlowIP utiliza conmutadores IP que aseguran la conmutaci n de la se al sin interrupciones durante una operaci n redundante. Con R&S CrossFlowIP es posible enrutar la se al a trav s del trayecto principal y del trayecto redundante de la cabecera, seg n lo requiera la situaci n de operaci n espec fica, garantizando as una conmutaci n de se al ininterrumpida durante las tareas de mantenimiento y en caso de aver as. Los componentes de hardware, como los discos duros y las fuentes de alimentaci n de la R&S AVS100 y del conmutador, son redundantes para avalar la m xima disponibilidad.
Para el control de calidad en todas las interfaces cr ticas del trayecto de la se al est disponible opcionalmente un v deo multipantalla para R&S AVHE100, que controla la calidad de los programas y del TS de salida, document ndolos gr fica y num ricamente.
R&S AVHE100 es un sistema de mantenimiento econ mico. La reducida cantidad de componentes de hardware integrados reduce considerablemente la probabilidad de aver as, lo cual se traduce en un mantenimiento m s sencillo y una menor necesidad de almacenamiento de piezas de recambio. Las funciones de la cabecera se pueden ampliar instalando opciones de software o bien m dulos de hardware en el gateway de audio y v deo.
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