【正文】 ................................................................................................................................8 2 有線電視系統(tǒng) .................................................................................................................................................... 11 概述 ........................................................................................................................................................... 11 設(shè)計(jì)依據(jù) ................................................................................................................................................... 11 系統(tǒng)特點(diǎn) ................................................................................................................................................... 11 系統(tǒng)功能需求 .......................................................................................................................................... 11 系統(tǒng)組成 ................................................................................................................................................... 12 前端設(shè)備 ........................................................................................................................................ 12 干線傳 輸系統(tǒng) ............................................................................................................................... 12 用戶分配網(wǎng)絡(luò) ............................................................................................................................... 13 系統(tǒng)設(shè)計(jì)說(shuō)明 .......................................................................................................................................... 13 有線電視子系統(tǒng) ...................................................................................................................................... 14 技術(shù)指標(biāo)分配 ............................................................................................................................... 14 系統(tǒng)節(jié)目規(guī)劃 ............................................................................................................................... 14 3 公共廣播系統(tǒng) .................................................................................................................................................... 15 概述 ........................................................................................................................................................... 15 設(shè)計(jì)依據(jù) ................................................................................................................................................... 15 基本功能 ................................................................................................................................................... 15 背景音樂(lè) ........................................................................................................................................ 15 業(yè)務(wù)廣播 ........................................................................................................................................ 15 緊急廣播 ........................................................................................................................................ 15 系統(tǒng)組成 ................................................................................................................................................... 16 系統(tǒng)設(shè)計(jì) ................................................................................................................................................... 16 整體設(shè)計(jì) ........................................................................................................................................ 16 系統(tǒng)組成 ........................................................................................................................................ 16 系統(tǒng)功能 ........................................................................................................................................ 17 線路敷設(shè)及揚(yáng)聲器安裝 .......................................................................................................................... 17 設(shè)備介紹 ................................................................................................................................................... 17 4 計(jì)算機(jī)網(wǎng)絡(luò)系統(tǒng) ................................................................................................................................................ 19 概述 ........................................................................................................................................................... 19 建設(shè)目標(biāo) ........................................................................................................................................ 19 系統(tǒng)設(shè)計(jì)原則 ............................................................................................................................... 20 設(shè)計(jì)標(biāo)準(zhǔn)及規(guī)格 ........................................................................................................................... 21 局域網(wǎng)系統(tǒng) ............................................................................................................................................... 22 系統(tǒng)總體設(shè)計(jì) ............................................................................................................................... 22 核 心層 ............................................................................................................................................ 23 接入層 ............................................................................................................................................ 23 網(wǎng)絡(luò)管理系統(tǒng) ............................................................................................................................... 23 西安航空職業(yè)技術(shù)學(xué)院 畢業(yè)設(shè)計(jì) 論文 5 INTERNET接入 .............................................................................................................................. 24 設(shè)備介紹 .......