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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fp8r3cj" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>天津以太網光端機交換機,光端機</p><p><span>***更新：</span>2021-01-28 00:30:29</p><p><span id="click" >瀏覽次數：3次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="etdpmoq" 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="3wqxeli" class="page-proshow02"><p class="title">詳細說明</p><div id="apre7ax" class="box"><p><p style="text-indent:25px">數據光端機多采用TDM和SDM技術有效的復用了多種窄帶業(yè)務，但對于非壓縮視頻的接入突顯不足，為了解決視頻傳輸的問題人們引入了視頻光端機。四路視頻數字復用光端機采用國際數字視頻及光纖傳輸技術，將4路視頻信號在單芯光纖實時同步、無失真、高質量地傳輸。4路視頻光端機采用全數字視頻無壓縮傳輸技術，高質量的視頻效果, 即插即用的設計使得安裝簡便易行, 無需進行現場調節(jié)，天津以太網光端機交換機，天津以太網光端機交換機, 其光模塊和重點電路均采用進口元器件，穩(wěn)定性高，天津以太網光端機交換機，所有的光、電接口均符合國際標準，適用于不同的工作環(huán)境。該光端機帶有視頻狀態(tài)指示,可監(jiān)控系統的正常運行。光纖中只有"有光"和"無光"兩種狀態(tài)，對光源線性要求不高或幾乎沒有要求，避免了信號在處理過程中的損失。天津以太網光端機交換機</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津以太網光端機交換機,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287916053249/6610643.png"></div><p style="text-indent:25px">SDH光端機 SDH(SynchronousDigitalHierarchy，同步數字系列)光端機容量較大，一般是16E1到4032E1。 SDH設備是一種將復接、線路傳輸及交換功能融為一體、并由統一網管系統操作的綜合信息傳送網絡。而隨著數字通信的迅速發(fā)展，點到點的直接傳輸越來越少，而大部分數字傳輸都要經過轉接，因而PDH系列便不能適合現代電信業(yè)務開發(fā)的需要，以及現代化電信網管理的需要。SDH就是適應這種新的需要而出現的傳輸體系。 SPDH光端機 SPDH(SynchronousPlesiochronousDigitalHierarchy)光端機，介于PDH和SDH之間。SPDH是帶有SDH(同步數字系列)特點的PDH傳輸體制(基于PDH的碼速調整原理，同時又盡可能采用SDH中一部分組網技術)。光端機從接口分類又為視頻光端機，音頻光端機，數據光端機，以太網光端機，開關量光端機，電話光端機。上海網絡光端機工作原理光端機選購從發(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字技術的數字光端機。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津以太網光端機交換機,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287100651396/3570245.png"></div><p style="text-indent:25px">錄視頻光端機應用范圍：智能交通監(jiān)控系統(ITS)，遠程多媒體教學/ 校園監(jiān)控，大型廠礦企業(yè)安防監(jiān)控系統，平安城市高清晰監(jiān)控系統，高速公路監(jiān)控/通信系統，小區(qū)智能監(jiān)控系統，電力/水力安全監(jiān)控系統，隧道通信對講及監(jiān)控系統，電視電話會議傳輸系統，長距離廣播電視傳輸系統，樓宇可視對講控制系統，綜合布線系統，通信。用戶在選擇4路視頻光端機時應注意它的視頻帶寬和APL范圍。視頻帶寬要足夠寬，視頻帶寬不足，監(jiān)視畫面細節(jié)部分就不夠清晰，水平分辨率就低，嚴重的甚至出現色彩失真或丟失;APL，即圖像平均電平，一個測量平均視頻亮度電平并表示為較大的白電平的百分比的方法。當APL低時，圖像就暗，當APL高時，圖像就亮。同時還要注重視頻光端機廠家的售后服務。</p><p style="text-indent:25px">光端機在廣電傳輸中的多種應用隨著大通信時代的不斷發(fā)展，廣播電視從模擬向數字的過渡，數字化帶給大眾的感受是節(jié)目質量提高、節(jié)目更加豐富多彩?，F在，人們對電視節(jié)目的需求日益提高，不只是收到電視信號就可以了，還要求完美的畫面和逼真的聲音。這個時候光端機就在這里發(fā)揮重大作用了！因此，先進的拍攝數字化設備固然重要，但是傳輸設備對信號起著重大重要，也就是不解決傳輸設備對信號滯后的這個問題，那么問題就嚴重了，所以光端機用途的起著非常重要作用總得來說，市級電視臺采用模擬設備進行傳輸，由于元器件的老化而使設備的不穩(wěn)定因素明顯增加，經常造成傳輸中斷，嚴重影響信號的正常傳輸及質量。所以，在充分考慮設備先進性、兼容性、整體配套性的基礎上，信號傳輸系統采取以數字設備為主，將具有使用模擬設備所無法比擬的優(yōu)勢。數字光端機可傳輸RS232, RS485, RS422標準數據。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津以太網光端機交換機,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288231647319/9767061.png"></div><p> <p> 環(huán)網式光端機將各主要節(jié)點連成環(huán)網，并且通過光分支的型式還可以有星型分支，可以做到網絡拓撲的隨意性，做到全網信息的共享等許多獨特的功能。 </p> <p> 數據光端機多采用TDM和SDM技術有效的復用了多種窄帶業(yè)務，但對于非壓縮視頻的接入突顯不足，為了解決視頻傳輸的問題人們引入了視頻光端機。 </p> <p> 數據光端機的作用是將所要傳輸的圖像、語音以及數據信號進行數字化處理，再將這些數字信號進行復用處理，使多路低速的數字信號轉換成一路高速信號，并將這一信號轉換成光信號。 </p> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 數字光端機比較容易實現多通道、多種信號的混合傳輸。甘肅音頻光端機交換機</p><p style="text-indent:25px">光端機基于傳輸的介質的不同有單模光端機和多模光端機之分。天津以太網光端機交換機</p><p style="text-indent:25px">“光纖收發(fā)器和光端機的相同之處都是要進行光電轉換，不同之處在于光纖收發(fā)器只進行光電轉化，不改變編碼，不對數據進行處理，主要應用于銀行、教育等組網中;光端機處理光電轉換工作以外，還要對數據信號進行處理，主要應用于安防監(jiān)控、遠程教育、視頻會議等對視頻傳輸要求適時性比較高的領域”。視頻光端機與光纖收發(fā)器在應用方面區(qū)別也比較大:一般視頻光端機用于監(jiān)控領域，光纖收發(fā)器用于網絡連接領域。所以面對的市場也有一定區(qū)別，視頻光端機一般用于安防市場、監(jiān)控市場、樓宇對講、弱電等行業(yè)。光纖收發(fā)器一般用于寬帶連接、局域網建設、系統集城等行業(yè)。天津以太網光端機交換機</p><p style="text-indent:25px">煙臺市正維通信技術有限公司致力于通信產品，是一家生產型的公司。公司業(yè)務涵蓋工業(yè)交換機，以太網交換機，環(huán)網交換機，光纖收發(fā)器等，價格合理，品質有保證。公司注重以質量為中心，以服務為理念，秉持誠信為本的理念，打造通信產品良好品牌。煙臺正維通信技術秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3038739.html</p></div></div></div></div></div><div id="wqx73hz" class="page-right twoColRt"><div id="jtl8p28" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="h7qczwy" class="recomPic likePro"><a 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