ITU-T G 345 FRENCH-1993 12 MHz SYSTEMS ON STANDARDIZED 1 2 4 4 mm COAXIAL CABLE PAIRS《1 2 4 4 mm标准同轴电缆线对上的12 MHz系统》.pdf

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ITU-T G 345 FRENCH-1993 12 MHz SYSTEMS ON STANDARDIZED 1 2 4 4 mm COAXIAL CABLE PAIRS《1 2 4 4 mm标准同轴电缆线对上的12 MHz系统》.pdf_第1页
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ITU-T G 345 FRENCH-1993 12 MHz SYSTEMS ON STANDARDIZED 1 2 4 4 mm COAXIAL CABLE PAIRS《1 2 4 4 mm标准同轴电缆线对上的12 MHz系统》.pdf_第2页
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ITU-T G 345 FRENCH-1993 12 MHz SYSTEMS ON STANDARDIZED 1 2 4 4 mm COAXIAL CABLE PAIRS《1 2 4 4 mm标准同轴电缆线对上的12 MHz系统》.pdf_第3页
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1、UNION INTERNATIONALE DES TLCOMMUNICATIONS5)4 4 G.345SECTEUR DE LA NORMALISATIONDES TLCOMMUNICATIONSDE LUIT3934 -%3 ).4%2.!4)/.!58 !.!,/)15%3#/52!.43 0/24%523#!2!#4 2)34)15%3 30 #) modifie Genve, 1972 et 1980)Les clauses de cette Recommandation sont celles qui figurent dans la Recommandation G.332 po

2、ur les systmessur paires coaxiales 2,6/9,5 mm, lexception de la clause suivante:5 Adaptation entre limpdance de la paire coaxiale et les impdances des rpteursPour une section lmentaire de cble denviron 2 km, le CCITT recommande une valeur de N gale 63 dB danstoute la bande des frquences transmises, N tant la grandeur dfinie au 5 de la Recommandation G.332.

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