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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288231647319/9767061.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ujwolsu" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288231647319/9767061.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u32byfc" 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>甘肅環(huán)網(wǎng)光端機工作原理,光端機</p><p><span>***更新：</span>2021-01-30 02:20:15</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="dsuwqcb" 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="clnfm22" class="page-proshow02"><p class="title">詳細說明</p><div id="wkcegn8" class="box"><p><p style="text-indent:25px">光端機，顧名思義就是光信號傳輸?shù)慕K端設備。由于目前光纖的大幅降價及其在各個領域的廣范應用，光端機的使用量越來越大，各光端機生產(chǎn)廠家也如雨后春筍般相繼出現(xiàn)。但因其中一部分技術在光端機市場還很小時就已比較成熟，開發(fā)新技術又需耗費大量人力、物力，所以光端機生產(chǎn)廠家多以中小企業(yè)為主，甘肅環(huán)網(wǎng)光端機工作原理，各種品牌層出不窮，但質(zhì)量卻大相徑庭。視頻監(jiān)控中的光端機是光通信系統(tǒng)中的傳輸設備，主要是進行光電轉(zhuǎn)換及傳輸功用，甘肅環(huán)網(wǎng)光端機工作原理，甘肅環(huán)網(wǎng)光端機工作原理。一般用于電信、電力、監(jiān)控、工業(yè)控制、視頻傳輸?shù)裙δ?，在各個行業(yè)有著廣的應用。模擬光端機采用了PFM調(diào)制技術實時傳輸圖象信號。甘肅環(huán)網(wǎng)光端機工作原理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅環(huán)網(wǎng)光端機工作原理,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288231647319/9767061.png"></div><p style="text-indent:25px">關于模擬光端機與數(shù)字光端機的區(qū)別，可以先了解下數(shù)字信號和模擬信號的區(qū)別，從而容易了解模擬光端機與數(shù)字光端機的區(qū)別了！多路信號同傳引起的交調(diào)失真 ? 在現(xiàn)場監(jiān)控應用中，用戶可能有許多各種信號，如視頻圖像、音頻、數(shù)據(jù)、以太網(wǎng)、電話或其它用戶自種信號分別用一對光端機來傳輸，必然價格昂貴，所以為了提高光纖的利用效率，降低成本，必須的各種信號在以便在一對或一根光纖上傳輸。對調(diào)頻、調(diào)幅、調(diào)相光端機來講，傳輸10/100M以太網(wǎng)信號或多路電話等高速的，將多路視頻或音頻信號混合調(diào)頻、調(diào)幅、調(diào)相在某一載波上必然會引起各種鏡像、交調(diào)干擾。模擬光端機傳輸信號容量有限，一般不會超過4路信號端機傳輸?shù)氖菙?shù)字信號，很容易進行大容量復用并且不會出現(xiàn)相互干擾。河南音頻光端機批發(fā)廠家光傳輸系統(tǒng)由三部分組成:光源(光發(fā)送機)，傳輸介質(zhì)、檢測器(光接收機)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅環(huán)網(wǎng)光端機工作原理,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287916053249/6610643.png"></div><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。</p><p> <p> 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。 </p> <p> 數(shù)據(jù)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?shù)膯栴}人們引入了視頻光端機。 </p> <p> 數(shù)據(jù)光端機的作用是將所要傳輸?shù)膱D像、語音以及數(shù)據(jù)信號進行數(shù)字化處理，再將這些數(shù)字信號進行復用處理，使多路低速的數(shù)字信號轉(zhuǎn)換成一路高速信號，并將這一信號轉(zhuǎn)換成光信號。 </p> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 光端機的信號地應與機殼地、大地相連，為積累的靜電荷提供泄放回路，防止靜電荷積累，損壞設備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅環(huán)網(wǎng)光端機工作原理,光端機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287100651396/3570245.png"></div><p style="text-indent:25px">光端機在安防領域有著重要的地位光端機在目前安防系統(tǒng)中扮演的是傳輸數(shù)據(jù)的角色，占據(jù)安防領域中重要的地位，他解決遠距離傳輸和大容量傳輸。因為前端攝像頭等采集源的接口不同，光端機必須成對使用，一個光端機把前端的輸入信號轉(zhuǎn)換成光信號，另一個光端機再把光信號還原成輸入信號送給終端。這也意味著在安防施工的過程中，針對每一個布點線路我們都必須配用一對光端機。在安防解決方案中，各個方向的布點數(shù)據(jù)，都會匯集到監(jiān)控中心，如果我們能對光端機進行整合，在光端機的設計中也引入交換機的概念，采用一個多路光端機來接入來自不同布點線路的光信號，我們就可以省去一半數(shù)量的光端機，對大型項目來說可以大量節(jié)約成本。這種集中管理的方式這有別于一般的多模光端機，多模形式在視頻圖像傳輸時，帶寬(針對模擬調(diào)制)和傳輸速率(針對數(shù)字式)有較大的限制，特別是因色散的影響明顯限制了采用高速率傳輸?shù)姆菈嚎s數(shù)字光端機在傳輸距離、容量方面的應用。數(shù)字光端機的數(shù)字非壓縮傳輸。甘肅環(huán)網(wǎng)光端機工作原理</p><p style="text-indent:25px">已有光端機生產(chǎn)廠商能夠做到在一個波長通道上一次傳輸10路非壓縮實時視頻圖像。甘肅環(huán)網(wǎng)光端機工作原理</p><p style="text-indent:25px">用戶在使用光端機時還可能遇到?jīng)]有控制信號或者控制信號不正常，這個時候產(chǎn)品手冊就可以排上用場了，對照產(chǎn)品手冊數(shù)據(jù)端口定義檢查數(shù)據(jù)線是否連接正確且牢固可靠。特別是控制線的正負極有沒有接反。　　光端機，就是將多個E1（一種中繼線路的數(shù)據(jù)傳輸標準，通常速率為2.048Mbps，此標準為中國和歐洲采用）信號變成光信號并傳輸?shù)脑O備。光端機根據(jù)傳輸E1口數(shù)量的多少，價格也不同。一般較小的光端機可以傳輸4個E1，目前較大的光端機可以傳輸4032個E1。甘肅環(huán)網(wǎng)光端機工作原理</p><p style="text-indent:25px">煙臺市正維通信技術有限公司屬于通信產(chǎn)品的高新企業(yè)，技術力量雄厚。煙臺正維通信技術是一家有限責任公司企業(yè)，一直“以人為本，服務于社會”的經(jīng)營理念;“誠守信譽，持續(xù)發(fā)展”的質(zhì)量方針。公司業(yè)務涵蓋工業(yè)交換機，以太網(wǎng)交換機，環(huán)網(wǎng)交換機，光纖收發(fā)器，價格合理，品質(zhì)有保證，深受廣大客戶的歡迎。煙臺正維通信技術將以真誠的服務、創(chuàng)新的理念、***的產(chǎn)品，為彼此贏得全新的未來！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3072043.html</p></div></div></div></div></div><div id="bkh8np3" class="page-right twoColRt"><div id="wkmt8r4" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="i852kcj" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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