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data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="3vv5dfn" class="clearfix searchWrap"><div id="dz5333b" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="pzlxdzz" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁(yè)</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="bl7hvbz" class="twoCol"><div id="l3fxnlj" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_csjhsb/">傳輸、交換設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-csjhsb_gdjlh/">光端機(jī)</a>?青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別工業(yè)交換機(jī) 煙臺(tái)市正維通信技術(shù)供應(yīng)</p><div id="nrfltzn" class="leftbox clearfix"><h1>青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別工業(yè)交換機(jī) 煙臺(tái)市正維通信技術(shù)供應(yīng)</h1><div id="xtrp5rv" class="proBig"><div id="jd3rxdj" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288076946112/8930383.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="h5lrv5r" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288076946112/8930383.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="flbrx3p" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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(guān)鍵詞：</span>青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別,光端機(jī)</p><p><span>***更新：</span>2021-01-23 06:19:09</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ndlrpvt" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">煙臺(tái)市正維通信技術(shù)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(huà): </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(jī): </span>0535-3975176</p><p><span>地址: </span>中國(guó)(山東)自由貿(mào)易試驗(yàn)區(qū)煙臺(tái)片區(qū)煙臺(tái)開(kāi)發(fā)區(qū)珠江路42號(hào)</p><p>[當(dāng)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="zvljzxl" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="t5rhfdj" class="box"><p><p style="text-indent:25px">光端機(jī)的技術(shù)分類(lèi)有哪些? 一般分分類(lèi)吧：PDH光端、SDH光端機(jī)、SPDH光端機(jī)。讓我們老普及下吧！ PDH光端 PDH(PlesiochronousDigitalHierarchy，準(zhǔn)同步數(shù)字系列)光端機(jī)是以超大規(guī)模集成電路構(gòu)成的120路光電合一傳輸設(shè)備，一般是成對(duì)應(yīng)用，也叫點(diǎn)到點(diǎn)應(yīng)用，青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別，容量一般為4E1，青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別，8E1，16E1;適用于小容量交換機(jī)組網(wǎng)、用戶(hù)環(huán)路網(wǎng)，移動(dòng)通信(基站)、專(zhuān)網(wǎng)、DDN網(wǎng)等。其主要特點(diǎn)是：采用超大規(guī)模集成芯片，具有功耗低，可靠性高的特點(diǎn)，青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別。提供E1的遠(yuǎn)端環(huán)回測(cè)試功能，維護(hù)方便。120提供4個(gè)E1通道;具有完備的告警功能，可顯示本端和遠(yuǎn)端告警。告警信息(包括掉電告警)可通過(guò)網(wǎng)管通道上報(bào)到對(duì)端。采用收發(fā)一體光器件，工作性能穩(wěn)定可靠。整機(jī)單板設(shè)計(jì)體積小巧，使用方便。已有光端機(jī)生產(chǎn)廠商能夠做到在一個(gè)波長(zhǎng)通道上一次傳輸10路非壓縮實(shí)時(shí)視頻圖像。青海環(huán)網(wǎng)光端機(jī)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="青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288076946112/8930383.png"></div><p style="text-indent:25px">國(guó)產(chǎn)光端機(jī)隨著技術(shù)的不斷成熟和完善，在功能和性能方面也在不斷進(jìn)步。比如視頻的AGC(自動(dòng)增益控制，即自動(dòng)監(jiān)測(cè)輸入視頻信號(hào)的幅度、動(dòng)態(tài)調(diào)整增益，使接收機(jī)中輸出標(biāo)準(zhǔn)的1Vp-p視頻信號(hào))功能。技術(shù)升級(jí)還體現(xiàn)在功能的多樣性，如能提供更豐富的業(yè)務(wù)接口、電池?cái)嚯妶?bào)警、字符迭加、防雷防潮、設(shè)備網(wǎng)管等各個(gè)方面，體現(xiàn)出產(chǎn)品面向方便應(yīng)用提升，具備故障預(yù)診斷系統(tǒng)的視頻光端機(jī)。視頻光端機(jī)技術(shù)升級(jí)也體現(xiàn)在功能模塊化設(shè)計(jì)，將產(chǎn)品的主要功能，如光電轉(zhuǎn)換、視頻、數(shù)據(jù)、音頻等功能模塊設(shè)計(jì)為完全單獨(dú)可插拔的，把安防里涉及的信號(hào)都融合到一臺(tái)光端機(jī)里。青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別光端機(jī)的信號(hào)地與機(jī)殼地、大地間的良好連接，可有效地預(yù)防感應(yīng)雷對(duì)設(shè)備造成的損壞。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288312342738/5018196.png"></div><p style="text-indent:25px">路視頻光端機(jī)主要用于傳輸視頻信號(hào)，用戶(hù)在使用過(guò)程中可能出現(xiàn)圖像不清晰，有雪花的情況，這種情況的出現(xiàn)多半是由于光纖鏈路衰減過(guò)大或前端視頻線纜過(guò)長(zhǎng)受交流電磁干擾所致，首先檢查尾纖是否彎折過(guò)度了，若過(guò)度彎折則打直;其次檢查光口和終端盒法蘭盤(pán)連接處是否連接可靠法蘭磁芯是否破損等;如果沒(méi)問(wèn)題再次檢查光口和尾纖是否過(guò)臟，如果過(guò)臟應(yīng)用酒精和棉花清潔待干后再插入;較后檢查視頻傳輸線路是否有會(huì)引起電磁干擾的物體，如果有去掉干擾。</p><p style="text-indent:25px">數(shù)字光端機(jī)是將所要傳輸?shù)膱D像、語(yǔ)音以及數(shù)據(jù)信號(hào)進(jìn)行數(shù)字化處理，再將這些數(shù)字信號(hào)進(jìn)行復(fù)用處理，使多路低速的數(shù)字信號(hào)轉(zhuǎn)換成一路高速信號(hào)，并將這一信號(hào)轉(zhuǎn)換成光信號(hào)。在接收端將光信號(hào)還原成電信號(hào)，還原的高速信號(hào)分解出原來(lái)的多路低速信號(hào)，較后再將這些數(shù)據(jù)信號(hào)還原成圖像、語(yǔ)音以及數(shù)據(jù)信號(hào)。模擬光端機(jī)就是將要傳輸?shù)男盘?hào)進(jìn)行幅度或頻率調(diào)制然后將調(diào)制好的電信號(hào)轉(zhuǎn)化成光信號(hào)。在接收端將光信號(hào)還原成電信號(hào)，再把信號(hào)進(jìn)行解調(diào)，還原出圖像、語(yǔ)音或數(shù)據(jù)信號(hào)。數(shù)字光端機(jī)傳輸信號(hào)質(zhì)量高，沒(méi)有模擬調(diào)頻、調(diào)相、調(diào)幅光端機(jī)多路信號(hào)同傳時(shí)的交調(diào)干擾嚴(yán)重、容易受環(huán)境影響、傳輸質(zhì)量低劣、長(zhǎng)期工作穩(wěn)定性差的缺點(diǎn)，因此，數(shù)字光端機(jī)將逐漸取代模擬光端機(jī)。視頻光端機(jī)就是把1到多路的模擬視頻信號(hào)通過(guò)各種編碼轉(zhuǎn)換成光信號(hào)通過(guò)光纖介質(zhì)來(lái)傳輸?shù)脑O(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287259766811/5815066.png"></div><p style="text-indent:25px">數(shù)據(jù)光端機(jī)多采用TDM和SDM技術(shù)有效的復(fù)用了多種窄帶業(yè)務(wù)，但對(duì)于非壓縮視頻的接入突顯不足，為了解決視頻傳輸?shù)膯?wèn)題人們引入了視頻光端機(jī)。四路視頻數(shù)字復(fù)用光端機(jī)采用國(guó)際數(shù)字視頻及光纖傳輸技術(shù)，將4路視頻信號(hào)在單芯光纖實(shí)時(shí)同步、無(wú)失真、高質(zhì)量地傳輸。4路視頻光端機(jī)采用全數(shù)字視頻無(wú)壓縮傳輸技術(shù)，高質(zhì)量的視頻效果, 即插即用的設(shè)計(jì)使得安裝簡(jiǎn)便易行, 無(wú)需進(jìn)行現(xiàn)場(chǎng)調(diào)節(jié), 其光模塊和重點(diǎn)電路均采用進(jìn)口元器件，穩(wěn)定性高，所有的光、電接口均符合國(guó)際標(biāo)準(zhǔn)，適用于不同的工作環(huán)境。該光端機(jī)帶有視頻狀態(tài)指示,可監(jiān)控系統(tǒng)的正常運(yùn)行。光纖的模擬傳輸系統(tǒng)是把光強(qiáng)進(jìn)行模擬調(diào)制，其光源的調(diào)制功率隨調(diào)制信號(hào)的幅度變化而變化。青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別</p><p style="text-indent:25px">模擬視頻光端機(jī)與數(shù)字光端機(jī)的模擬信號(hào)傳輸輸入和輸出處理方式不一樣。青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別</p><p style="text-indent:25px">關(guān)于模擬光端機(jī)與數(shù)字光端機(jī)的區(qū)別，可以先了解下數(shù)字信號(hào)和模擬信號(hào)的區(qū)別，從而容易了解模擬光端機(jī)與數(shù)字光端機(jī)的區(qū)別了！模擬信號(hào)傳輸輸入和輸出處理方式不一樣無(wú)論模擬、數(shù)字光端機(jī)，對(duì)輸入的基帶的視頻、音頻、數(shù)據(jù)信號(hào)都必須進(jìn)行處理。對(duì)于模擬調(diào)幅光端機(jī) 視頻、音頻、數(shù)據(jù)的幅度對(duì)一高頻載波信號(hào)進(jìn)行調(diào)制，使高頻載波信號(hào)的幅度隨視頻、音頻、數(shù)據(jù)的幅度變化而光端機(jī)對(duì)輸入的基帶的視頻、音頻、數(shù)據(jù)進(jìn)行高分辨率的模擬-數(shù)字轉(zhuǎn)換，如1Vp-p幅度范圍的幅度信號(hào)利用號(hào)來(lái)表示，1V等分成4096，因此模數(shù)轉(zhuǎn)換后引起的最大電壓幅度誤差為1/4096V(約2.5mV),此誤差電壓稱(chēng) 各種幅度的電壓數(shù)值從0V、1/4096V、2/4096V...數(shù)字編碼信號(hào)直接控制光頭發(fā)射的光信號(hào)的強(qiáng)、弱兩種狀態(tài)(對(duì)應(yīng)0或再將數(shù)字編碼進(jìn)行數(shù)字-模擬轉(zhuǎn)換，恢復(fù)成原始的基帶的視頻、音頻、數(shù)據(jù)信號(hào)。青海環(huán)網(wǎng)光端機(jī)與光纖收發(fā)器區(qū)別</p><p 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