
Patching de video y audio para las actuales operaciones cambiant March 12th, 2013 at 11:05am
Los sistemas patching de ltima generacin se han convertido en un requerimiento clave para los entornos de broadcast y media, proporcionando flexibilidad y continuidad para producciones de estudio y broadcast en exteriores. Son particularmente valiosos para entornos trepidantes de produccin en directo de alta tensin, cuando cada segundo cuenta y se tiene que configurar y volver a configurar el equipo sobre la marcha con cierta frecuencia y lo ms rpidamente posible.
Para decirlo de forma sencilla, los paneles patch o patchbays de vdeo y audio ofrecen una serie de circuitos que se pueden interconectar utilizando cables patch de forma ventajosa y flexible. Proporcionan una localizacin centralizada y conveniente para que los ingenieros puedan parchear las seales de audio y vdeo rpidamente sin tener que enchufar cables en los sistemas y equipos individuales. Con cada seal entrante y saliente de un solo panel patch los ingenieros son capaces de configurar y volver a configurar vdeo y audio de forma rpida para diferentes tipos de eventos, as como llevar a cabo soluciones rpidas y sencillas en caso de un fallo elctrico o en el equipo durante la produccin. Como todos los cambios se pueden llevar a cabo en el patchbay, es mucho ms sencillo conectar distintos aparatos en diferentes rdenes para diversos proyectos. Mientras que los patchbays se pueden utilizar en mltiples entornos, nosotros hemos visto que son particularmente tiles en aplicaciones cableadas, como pueden ser nuestros estudios locales de broadcast.
Normalling se refiere a la forma en la que las entradas y salidas del patchbay se cablean. En la mayora de casos la fila superior de conectores del patchbay esta cableada en la parte posterior a las salidas, mientras que la fila inferior de conectores esta cableada a las entradas. Los patchbays pueden ser half-normal (medio normales) o full-normal (completamente normales) indicando como se conectan internamente las conexiones superiores e inferiores. Con normalling completo, si se inserta una conexin en cualquiera de las dos filas romper la conexin normal (el normalling) a la fila que corresponde a la conexin, por ejemplo, una conexin insertada en la fila superior (salida) dirige la seal a otro lugar sin que la dirija a la entrada normal, liberando esa salida para que otro dispositivo pueda utilizarla. Con half-normalling, una conexin en la fila superior no romper el normalling, aunque una conexin en la fila inferior s lo har; por lo tanto, una conexin insertada en la fila superior partira la seal para que se pueda mandar a una segunda entrada adicional. Una conexin en la fila inferior romper la conexin, que ocasionalmente puede ser algo til para desconectar una parte del equipo de forma rpida, lo que tambin se conoce como dead patching.
Un mercado en evolucin
Chile es un microcosmos en el mundo de broadcast de Amrica Latina. Al igual que en otros pases, aqu hay una gran demanda de programacin HD por parte de la audiencia y los canales estn respondiendo con ampliaciones de las grandes instalaciones y actualizaciones de equipamiento.
Como el integrador chileno de los sistemas Bittree Patching, estamos viendo cmo aumenta la demanda de equipos de patching de alta calidad y fiables para cumplir con los requerimientos cambiantes. Con un cliente, Channel 13, unas recientes privatizaciones han permitido que la cadena lleve a cabo importantes inversiones en infraestructura e instalaciones, incluyendo una nueva inversin multimillonaria en una instalacin de tres estudios que permitir la produccin interna.
Los patchbays de audio y vdeo tenan un lugar importante en las operaciones de Channel 13 durante muchos aos y esperamos que la cadena realice una importante inversin en equipamiento de patching vanguardista para las nuevas instalaciones. Tambin, como resultado de una referencia positiva de Channel 13, uno de los broadcasters ms importantes de Chile, Megavisin, realiz el ao pasado una inversin en equipos Bittree para apoyar su gran red de canales en todo el pas, adems de en Per y Argentina.
Nuevas fronteras en la tecnologa
Una innovacin que se est haciendo muy popular en Amrica Latina es el concepto de patchbays que pueden ser fcilmente programados desde el panel frontal, al contrario que los sistemas habituales que necesitan que el operador quite la cubierta del bastidor y lleve a cabo las modificaciones internas. Estos sistemas, ejemplificados por la serie Bittree 969-A de patchbays de audio programables, permiten cambios rpidos y sencillos a normalling y grounding para todo el patchbay o para circuitos individuales. El operador simplemente quita la tira de designacin del panel frontal para revelar una serie de puentes que cambian el flujo de la seal sin necesidad de volver a cablear. Normals se pueden cambiar de forma instantnea a full-normal, half-normal y non-normal, y grounding se puede cambiar a aislado, en bucle o bussed.
A la vez que el mercado de broadcast de Amrica Latina contina evolucionando, las instalaciones de media continuarn adoptando lo ltimo en equipamiento patching, esto a la par que las grandes cuentas con instalaciones de xito continan creciendo. En Ros Y Cia. estamos emocionados de formar parte de esa evolucin.
http://www.panoramaaudiovisual.com/2013/03/12/patching-de-video-y-audio-para-las-actuales-operaciones-cambiantes-de-media/
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