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src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469289012058980/8102049.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8m2dp3i" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469289012058980/8102049.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="w2238by" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別,光端機</p><p><span>***更新：</span>2021-01-27 00:29:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ituf42m" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">煙臺市正維通信技術有限公司</a></p><p><span>聯(lián)系人：</span>程雷</p><p><span>郵箱: </span>zhengwei@zhengwei-teah.cn</p><p><span>電話: </span>18766381696</p><p><span>傳真: </span>0535_</p><p><span>網(wǎng)址: </span>http://www.zwkj.net.cn</p><p><span>手機: </span>0535-3975176</p><p><span>地址: </span>中國(山東)自由貿(mào)易試驗區(qū)煙臺片區(qū)煙臺開發(fā)區(qū)珠江路42號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="xhzi4tq" class="page-proshow02"><p class="title">詳細說明</p><div id="7vplkgc" class="box"><p><p style="text-indent:25px">光端機要一對嘛? 總會有新客戶問光端機要一對的嗎？對的，其實光端機是成對使用的。光端機是用在以光纖作為載體的光、電傳換器。發(fā)送端和接收端必須是同一種設備。為什么要成對使用呢？簡單說光端機是光信號傳輸?shù)慕K端設備，其實光端機是一個延長數(shù)據(jù)傳輸?shù)墓饫w通信設備，安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別。光端機一般都是成對使用，分為光發(fā)射機和光接收機。光發(fā)射機完成電光轉(zhuǎn)換，并把光信號發(fā)射出去用于光纖傳輸。光接收機主要是把從光纖接收的光信號再還原為電信號，完成光電轉(zhuǎn)換。所以一般光端機是成對使用的。光端機很多類型：PDH光端機、電話光端機、SDH光端機、SPDH光端機、視頻光端機、以太網(wǎng)光端機、音頻光端機、數(shù)據(jù)光端機、VGA/HDMI光端機，安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別，安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別、HD-SDI光端機。光端機作用就是用于遠程傳輸數(shù)據(jù)，將音視頻進行遠距離傳輸，具有傳輸距離遠，無延遲、無干擾等優(yōu)點。光傳輸系統(tǒng)按傳輸信號劃分，可分為數(shù)字傳輸系統(tǒng)和模擬傳輸系統(tǒng)。安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469289012058980/8102049.png"></div><p style="text-indent:25px">光端機在廣電傳輸中的多種應用傳輸設備傳輸設備以SDI光端機為主，根據(jù)實際情況選用數(shù)字方式傳輸?shù)囊?音頻光端機。通過SDI平臺傳送數(shù)字信號，與模擬信號以行同步前沿為基準不同，它是以串行數(shù)據(jù)流中的時鐘周期為基準，同步鎖相也是與時鐘進行鎖定。這樣，只要接收機能夠鎖定輸入信號，則可以恢復信號。現(xiàn)場直播在電視現(xiàn)場直播中，采用數(shù)字傳輸一般可分為兩種方式。第一種是前端錄制、傳輸及后期制作全部采用數(shù)字設備。第二種是前端錄制采用模擬方式，中間采用數(shù)字傳輸方式以減小傳輸過程中信號損耗，后期制作視自身情況采用數(shù)字或者模擬方式。以上是光端機的多種應用等等，希望可以讓大家對光端機有更生的了解。安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別光端機設備內(nèi)設置有微處理器，監(jiān)測系統(tǒng)內(nèi)部工作狀態(tài)采集模塊的各種參數(shù)，并通過LED和VFD顯示系統(tǒng)直觀顯示。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288556118840/5378373.png"></div><p style="text-indent:25px">光端光端機分3類：PDH，SPDH，SDH。　　PDH（Plesiochronous Digital Hierarchy，準同步數(shù)字系列）光端機是小容量光端機，一般是成對應用，也叫點到點應用，容量一般為4E1，8E1，16E1。　　SDH（Synchronous Digital Hierarchy，同步數(shù)字系列）光端機容量較大，一般是16E1到4032E1。　　SPDH（Synchronous Plesiochronous Digital Hierarchy）光端機，介于PDH和SDH之間。SPDH是帶有SDH（同步數(shù)字系列）特點的PDH傳輸體制（基于PDH的碼速調(diào)整原理，同時又盡可能采用SDH中一部分組網(wǎng)技術）。機分3類：PDH，SPDH，SDH。</p><p style="text-indent:25px">◆ 插卡式或單獨結(jié)構,適用集中管理4U機架 ◆ 10 位數(shù)字編碼及無壓縮式視頻傳輸 ◆ 支持任何高的分辯率視頻信號 ◆ 5Hz-10MHz 視頻通道 ◆ 自動兼容PAL 、NTSC 、SECAM 視頻制式 ◆ 帶APC 電路，輸出光功率恒定，動態(tài)范圍大 ◆ 千兆光纖傳輸，大容量，易升級 ◆ 電源和其它參數(shù)狀態(tài)指示的LED 可監(jiān)視系統(tǒng)的運行狀況 ◆ 支持視頻無損再生中繼 ◆ 先進自適應技術，使用時無需進行現(xiàn)場的電氣或光學調(diào)節(jié) ◆ 工業(yè)級設計，模塊化設計使設備可靠靈活 ◆ 可自動恢復電源熔斷絲 ◆ 全內(nèi)置電源、機殼設計外觀獨特，外殼尺寸大小(200mmX140mmX40mm) ◆ 內(nèi)部電源功耗:4.5 w(Input:AC140 ~ 260V 光端機選購從發(fā)送到光纖上的信號來分，光端機可分為基于模擬技術的模擬光端機和基于數(shù)字技術的數(shù)字光端機。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287259766811/5815066.png"></div><p style="text-indent:25px">圖象壓縮數(shù)字光端機一般采用MPEG II圖象壓縮技術，它能將活動圖象壓縮成N×2Mbps的數(shù)據(jù)流通過標準電信通信接口傳輸或者直接通過光纖傳輸。由于采用了圖象壓縮技術，它能明顯降低信號傳輸帶寬。全數(shù)字非壓縮視頻光端機采用全數(shù)字無壓縮技術，因此能支持任何高分辨率運動、靜止圖像無失真?zhèn)鬏?克服了常規(guī)的模擬調(diào)頻、調(diào)相、調(diào)幅光端機多路信號同時傳輸時交調(diào)干擾嚴重、容易受環(huán)境干擾影響、傳輸質(zhì)量低劣、長期工作穩(wěn)定性不高等缺點。并且支持音頻雙向、數(shù)據(jù)雙向、開關量雙向、以太網(wǎng)、電話等信號的并行傳輸，現(xiàn)場接線方便，即插即用。與傳統(tǒng)的模擬光端機相比，數(shù)字光端機具有明顯的優(yōu)勢。模擬視頻光端機與數(shù)字光端機價格不同。安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別</p><p style="text-indent:25px">在模擬傳輸系統(tǒng)中，是把輸入信號變?yōu)閭鬏斝盘柕恼穹?頻率或相位)的連續(xù)變化。安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別</p><p style="text-indent:25px">根據(jù)光纖傳輸網(wǎng)絡拓撲型式除可選擇傳統(tǒng)的點對點傳輸光端機外，還有節(jié)點式和環(huán)網(wǎng)式光端機可供選擇。節(jié)點式視頻光端機將前端各節(jié)點組成鏈網(wǎng)或樹型網(wǎng)絡，節(jié)點機在每個節(jié)點首先將信號接收下來，轉(zhuǎn)換成電信號，再和本地節(jié)點的信號交換復用，光電轉(zhuǎn)換后采用WDM技術復用到一條光纖上傳輸。在每個節(jié)點不進行模數(shù)轉(zhuǎn)換，降低了信號衰減。環(huán)網(wǎng)式光端機將各主要節(jié)點連成環(huán)網(wǎng)，并且通過光分支的型式還可以有星型分支，可以做到網(wǎng)絡拓撲的隨意性，做到全網(wǎng)信息的共享等許多獨特的功能。多?；騿文９饫|，光纖網(wǎng)絡是由多?；騿文９饫|組成，這就決定了選用多模端機還是單模端機。如果新建項目，建議優(yōu)先使用視橋光網(wǎng)綜合業(yè)務光端機，單模光纖和單模光端機。相對于多模光纖，單模光纖傳輸距離更遠、信息容量更大、速度更快。安徽環(huán)網(wǎng)光端機與光纖收發(fā)器區(qū)別</p><p style="text-indent:25px">煙臺市正維通信技術有限公司主要經(jīng)營范圍是通信產(chǎn)品，擁有一支專業(yè)技術團隊和良好的市場口碑。煙臺正維通信技術致力于為客戶提供良好的工業(yè)交換機，以太網(wǎng)交換機，環(huán)網(wǎng)交換機，光纖收發(fā)器，一切以用戶需求為中心，深受廣大客戶的歡迎。公司將不斷增強企業(yè)重點競爭力，努力學習行業(yè)知識，遵守行業(yè)規(guī)范，植根于通信產(chǎn)品行業(yè)的發(fā)展。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/3023619.html</p></div></div></div></div></div><div id="pya7cgx" class="page-right 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