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ABNT NBR 15604:2007 68 Páginas NORMA ABNT NBR BRASILEÑA 15604 Primera edición 30.11.2007 Válida a partir de 01.12.2007 Televisión digital terrestre — Receptores Palabras clave: Televisión digital terrestre. Receptores. Convertidor digital. Set-top box. IRD. Unidad receptora. One-seg. Full-seg. Comunicación interactiva. Middleware. HDMI. Interfaces de salidas de audio y video. Interfaces digitales de alta velocidad. Canal virtual. Decodificación de audio y video. H.264. AAC. Decodificación de datos primarios. Configuración del receptor. Nivel y perfil ICS 33.160.01 ISBN 978-85-07-00885-9 Número de referencia ABNT NBR 15604:2007 68 páginas © ABNT 2007 ABNT NBR 15604:2007 © ABNT 2007 Todos los derechos reservados. A menos que se especifique de otro modo, ninguna parte de esta publicación puede ser reproducida o utilizada por cualquier medio, electrónico o mecánico, incluyendo fotocopia y microfilm, sin permiso por escrito de la ABNT. ABNT Av.Treze de Maio, 13 - 28º andar 20031-901 - Rio de Janeiro - RJ Tel.: + 55 21 3974-2300 Fax: + 55 21 2220-1762 [email protected] www.abnt.org.br Impresso en Brasil ii © ABNT 2007 - Todos los derechos reservados ABNT NBR 15604:2007 Índice Página Prefacio......................................................................................................................................................................vii Introdução ................................................................................................................................................................viii 1 Alcance ...........................................................................................................................................................1 2 Referencias normativas ................................................................................................................................1 3 Términos y definiciones................................................................................................................................2 4 Abreviaturas...................................................................................................................................................5 5 Configuración del receptor...........................................................................................................................7 5.1 Configuración básica del receptor ..............................................................................................................7 5.2 Configuración básica del IRD.......................................................................................................................8 5.3 Arquitectura básica del receptor ...............................................................................................................10 6 Condiciones de ambiente y de seguridad.................................................................................................10 6.1 Seguridad .....................................................................................................................................................10 6.1.1 Consideraciones generales........................................................................................................................10 6.1.2 Condiciones de ensayo...............................................................................................................................10 6.1.3 Condiciones de temperatura y humedad..................................................................................................10 6.1.4 Ensayos y condiciones de fallo .................................................................................................................11 6.1.5 Temperatura en condiciones de uso normal............................................................................................11 6.1.6 Riesgos de descarga eléctrica ...................................................................................................................11 6.1.7 Riesgos de incendio....................................................................................................................................11 6.1.8 Resistencia mecánica .................................................................................................................................11 6.2 Condiciones ambientales – Temperatura ambiente ................................................................................11 6.3 Enchufe del cable de alimentación............................................................................................................12 6.4 Identificación obligatoria en el receptor ...................................................................................................12 7 Especificaciones de las unidades de recepción de señales de televisión digital terrestre ................12 7.1 Antena de recepción ...................................................................................................................................12 7.2 Especificación de la unidad receptora (IRD) ............................................................................................12 7.2.1 Entrada de antena........................................................................................................................................12 7.2.2 Recepción de canales .................................................................................................................................13 7.2.3 Ancho de banda del canal ..........................................................................................................................13 7.2.4 Frecuencia de la portadora central de canales ........................................................................................13 7.2.5 Sensibilidad..................................................................................................................................................16 7.2.6 Selectividad – Relación de protección......................................................................................................16 7.2.7 Primera frecuencia intermedia (FI) ............................................................................................................16 7.2.8 Sincronización de la frecuencia recibida (catch-up) ...............................................................................16 7.2.9 Banda de sincronización del clock recibido.............................................................................................17 7.2.10 Procesamiento de la señal en el front-end ...............................................................................................17 7.2.11 Medidor de intensidad de la señal .............................................................................................................19 7.2.12 Medidor de calidad de la señal...................................................................................................................19 7.2.13 Medidor de BER ...........................................................................................................................................19 7.2.14 Recepción del aviso de emergencia..........................................................................................................19 7.2.15 Recepción de señales de televisión analógica ........................................................................................20 7.2.16 Presentación de contenidos one-seg en receptores full-seg .................................................................20 7.2.17 Procesamiento del transporte....................................................................................................................20 7.2.18 Memorias ......................................................................................................................................................20 7.2.19 Decodificación de vídeo e interfaces de salidas......................................................................................20 7.2.20 Decodificación de audio e interfaces de salidas......................................................................................20 7.2.21 Decodificador de datos primarios .............................................................................................................21 7.2.22 Función EPG ................................................................................................................................................21 7.2.23 Clasificación indicativa...............................................................................................................................21 © ABNT 2007 - Todos los derechos reservados iii ABNT NBR 15604:2007 7.2.24 Accesibilidad................................................................................................................................................21 7.2.25 Almacenamiento y acceso a los canales ..................................................................................................21 7.2.26 Interfaces digitales de alta velocidad........................................................................................................21 7.2.27 Interfaces externas......................................................................................................................................22 7.2.28 Mando a distancia........................................................................................................................................22 8 Procesamiento de decodificación de audio y vídeo y respectivas señales de salida .........................23
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