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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>云南數(shù)字視頻光端機(jī)批發(fā)廠家,光端機(jī)</p><p><span>***更新：</span>2021-01-28 04:22:53</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="bfmog7p" 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: </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(山東)自由貿(mào)易試驗(yàn)區(qū)煙臺(tái)片區(qū)煙臺(tái)開發(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="n3s8jgr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="eiqs3is" class="box"><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論模擬、數(shù)字光端機(jī)，對(duì)輸入的基帶的視頻，云南數(shù)字視頻光端機(jī)批發(fā)廠家、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)。數(shù)字光端機(jī)支持的信號(hào)容量可達(dá)16路，云南數(shù)字視頻光端機(jī)批發(fā)廠家，甚至更多(32路，云南數(shù)字視頻光端機(jī)批發(fā)廠家、64路、128路)。云南數(shù)字視頻光端機(jī)批發(fā)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南數(shù)字視頻光端機(jī)批發(fā)廠家,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287379936019/9767986.png"></div><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！多路信號(hào)同傳引起的交調(diào)失真 ? 在現(xiàn)場監(jiān)控應(yīng)用中，用戶可能有許多各種信號(hào)，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(hào)分別用一對(duì)光端機(jī)來傳輸，必然價(jià)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(hào)在以便在一對(duì)或一根光纖上傳輸。對(duì)調(diào)頻、調(diào)幅、調(diào)相光端機(jī)來講，傳輸10/100M以太網(wǎng)信號(hào)或多路電話等高速的，將多路視頻或音頻信號(hào)混合調(diào)頻、調(diào)幅、調(diào)相在某一載波上必然會(huì)引起各種鏡像、交調(diào)干擾。模擬光端機(jī)傳輸信號(hào)容量有限，一般不會(huì)超過4路信號(hào)端機(jī)傳輸?shù)氖菙?shù)字信號(hào)，很容易進(jìn)行大容量復(fù)用并且不會(huì)出現(xiàn)相互干擾。上海射頻光端機(jī)價(jià)格數(shù)字光端機(jī)傳輸距離較長:可達(dá)80Km，甚至更遠(yuǎn)(120Km)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南數(shù)字視頻光端機(jī)批發(fā)廠家,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287996943972/1730711.png"></div><p style="text-indent:25px">光纖收發(fā)器與光端機(jī)的區(qū)別是什么？相同之處：都要進(jìn)行光電轉(zhuǎn)換。不同之處：收發(fā)器只是進(jìn)行光電轉(zhuǎn)換，不改變編碼，不對(duì)數(shù)據(jù)作其他處理，收發(fā)器是針對(duì)以太網(wǎng)來說，跑802.3協(xié)議，只用于點(diǎn)對(duì)點(diǎn)的連接。光端機(jī)，除了光電轉(zhuǎn)換的工作以外，還要對(duì)數(shù)據(jù)信號(hào)進(jìn)行復(fù)用和解復(fù)用。通常光端機(jī)出來的是對(duì)E1線路，SDH，PDH光端機(jī)主要用于電信運(yùn)營商，用于提供多點(diǎn)到點(diǎn)的數(shù)據(jù)電路；視頻光端機(jī)主要用于安防監(jiān)控，遠(yuǎn)程教育，視頻會(huì)議等對(duì)視頻傳輸要求適時(shí)比較高的領(lǐng)域，同時(shí)可以傳輸控制，開關(guān)量，語言，以太網(wǎng)等信號(hào)來滿足多業(yè)務(wù)應(yīng)用需求，所以我們有時(shí)候也將其稱為綜合光端機(jī)。</p><p style="text-indent:25px">同步數(shù)據(jù)傳輸系統(tǒng)在數(shù)據(jù)傳輸上有了很大提高，但是遇到非壓縮視頻的接入和傳輸就顯得力不從心，因此，人們又漸漸利用視頻光端機(jī)來代替數(shù)據(jù)光端機(jī)，我們較熟悉的就是城市監(jiān)控系統(tǒng)對(duì)視頻光端機(jī)的應(yīng)用。光端機(jī)的作用簡單理解就是對(duì)光信號(hào)和電信號(hào)進(jìn)行轉(zhuǎn)換和傳輸?shù)囊环N設(shè)備。光端機(jī)的作用主要體現(xiàn)在兩個(gè)方面，一，光端機(jī)可以同時(shí)將多個(gè)E1信號(hào)轉(zhuǎn)變?yōu)楣庑盘?hào)，進(jìn)而將其傳輸出去，E1信號(hào)是指一種數(shù)據(jù)傳輸標(biāo)準(zhǔn)，多應(yīng)用于中國個(gè)歐洲各國。光端機(jī)較多可以同時(shí)傳輸4032個(gè)E1信號(hào)，較少也可以同時(shí)傳輸4個(gè)。二，光端機(jī)可以用于光通信系統(tǒng)的傳輸設(shè)備，將光電進(jìn)行轉(zhuǎn)換并將其傳輸出去，這項(xiàng)作用在生活中的應(yīng)用尤為廣，多見于監(jiān)控、電力、電信、視頻傳輸?shù)榷鄠€(gè)行業(yè)，為我們的生活做出巨大貢獻(xiàn)。光端機(jī)的使用中要保持有一個(gè)通風(fēng)、散熱、防潮、整潔的工作環(huán)境。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南數(shù)字視頻光端機(jī)批發(fā)廠家,光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469288556118840/5378373.png"></div><p style="text-indent:25px">以太網(wǎng)光端機(jī)主要特點(diǎn)有哪些？以太網(wǎng)光端機(jī)，他是一種10/100Mbps智能自適應(yīng)快速以太網(wǎng)光電轉(zhuǎn)換器，實(shí)現(xiàn)在雙絞線和光纖兩種不同網(wǎng)絡(luò)傳輸介質(zhì)之間傳輸數(shù)據(jù)。以太網(wǎng)光端機(jī)主要特點(diǎn) 1．提供較低延時(shí)的數(shù)據(jù)傳輸。 2．對(duì)網(wǎng)絡(luò)協(xié)議完全透明。 3．采用ASIC芯片實(shí)現(xiàn)數(shù)據(jù)線速轉(zhuǎn)發(fā)。可編程ASIC將多項(xiàng)功能集中到一個(gè)芯片上，具有設(shè)計(jì)簡單、可靠性高、電源消耗少等優(yōu)點(diǎn)，能使設(shè)備得到更高的性能和更低的成本。 4．機(jī)架型設(shè)備可提供熱拔插功能，便于維護(hù)和無間斷升級(jí)。 5．可網(wǎng)管設(shè)備能提供網(wǎng)絡(luò)診斷、升級(jí)、狀態(tài)報(bào)告、異常情況報(bào)告及控制等功能，能提供完整的操作日志和報(bào)警日志。 6．設(shè)備多采用1+1的電源設(shè)計(jì)，支持超寬電源電壓，實(shí)現(xiàn)電源保護(hù)和自動(dòng)切換。 7．支持超寬的工作溫度范圍。 8．支持齊全的傳輸距離（0～120公里）。光端機(jī)的使用中要運(yùn)行監(jiān)測與記錄。云南數(shù)字視頻光端機(jī)批發(fā)廠家</p><p style="text-indent:25px">光端機(jī)是用來將光信號(hào)和電信號(hào)互相轉(zhuǎn)換的一種設(shè)備,對(duì)所傳信號(hào)不會(huì)進(jìn)行任何壓縮.云南數(shù)字視頻光端機(jī)批發(fā)廠家</p><p style="text-indent:25px">光端機(jī)在廣電傳輸中的多種應(yīng)用日常新聞傳送新聞中心技術(shù)系統(tǒng)應(yīng)采用全數(shù)字方案。視/音頻輸入信號(hào)由傳輸系統(tǒng)提供，轉(zhuǎn)播主信號(hào)全部為SDI信號(hào)(嵌入音頻)或視/音頻信號(hào)，經(jīng)解嵌或A/D轉(zhuǎn)換后，分配到錄像區(qū)、視/音頻分配矩陣和硬盤網(wǎng)絡(luò)系統(tǒng)。這些信號(hào)的切換和調(diào)度管理，由新聞中心的數(shù)字視頻矩陣和模擬矩陣負(fù)責(zé)，然后按照不同的要求，可以直接以SDI信號(hào)傳輸給發(fā)射臺(tái)或者經(jīng)MPEG-2壓縮編碼后分插到SDH環(huán)網(wǎng)傳輸?shù)绞∨_(tái)。微波傳輸微波站->制作中心->演播廳->發(fā)射臺(tái)，傳輸系統(tǒng)的設(shè)計(jì)和安裝直接影響到信號(hào)的傳輸質(zhì)量。目前傳輸系統(tǒng)設(shè)備大部分都是數(shù)字產(chǎn)品。微波站到制作中心之間的信號(hào)傳輸采用高寬帶視頻傳輸光端機(jī)。云南數(shù)字視頻光端機(jī)批發(fā)廠家</p><p style="text-indent:25px">煙臺(tái)市正維通信技術(shù)有限公司致力于通信產(chǎn)品，是一家生產(chǎn)型公司。公司業(yè)務(wù)分為工業(yè)交換機(jī)，以太網(wǎng)交換機(jī)，環(huán)網(wǎng)交換機(jī)，光纖收發(fā)器等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司從事通信產(chǎn)品多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。煙臺(tái)正維通信技術(shù)秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3043589.html</p></div></div></div></div></div><div id="m7bapok" class="page-right twoColRt"><div id="jtaczl2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="wlxu38d" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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