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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469286813163777/4226115.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kjqszw9" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469286813163777/4226115.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="lzczbi9" 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>廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià),光端機(jī)</p><p><span>***更新：</span>2021-02-01 00:30:16</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="qkwovxr" 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(guó)(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="tdamj3z" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="cr7s8od" class="box"><p><p style="text-indent:25px">◆ 插卡式或單獨(dú)結(jié)構(gòu),適用集中管理4U機(jī)架 ◆ 10 位數(shù)字編碼及無(wú)壓縮式視頻傳輸 ◆ 支持任何高的分辯率視頻信號(hào) ◆ 5Hz-10MHz 視頻通道 ◆ 自動(dòng)兼容PAL 、NTSC 、SECAM 視頻制式 ◆ 帶APC 電路，輸出光功率恒定，動(dòng)態(tài)范圍大 ◆ 千兆光纖傳輸，大容量，易升級(jí) ◆ 電源和其它參數(shù)狀態(tài)指示的LED 可監(jiān)視系統(tǒng)的運(yùn)行狀況 ◆ 支持視頻無(wú)損再生中繼 ◆ 先進(jìn)自適應(yīng)技術(shù)，廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)，使用時(shí)無(wú)需進(jìn)行現(xiàn)場(chǎng)的電氣或光學(xué)調(diào)節(jié) ◆ 工業(yè)級(jí)設(shè)計(jì)，模塊化設(shè)計(jì)使設(shè)備可靠靈活 ◆ 可自動(dòng)恢復(fù)電源熔斷絲 ◆ 全內(nèi)置電源、機(jī)殼設(shè)計(jì)外觀獨(dú)特，廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)，外殼尺寸大小(200mmX140mmX40mm) ◆ 內(nèi)部電源功耗:4，廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià).5 w(Input:AC140 ~ 260V 光端機(jī)選購(gòu)從發(fā)送到光纖上的信號(hào)來(lái)分，光端機(jī)可分為基于模擬技術(shù)的模擬光端機(jī)和基于數(shù)字技術(shù)的數(shù)字光端機(jī)。廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià),光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469286813163777/4226115.png"></div><p style="text-indent:25px">現(xiàn)以大家熟悉的平安城市報(bào)警與監(jiān)控系統(tǒng)為例，如果采用傳統(tǒng)光端機(jī)的系統(tǒng)想要做整個(gè)項(xiàng)目是相對(duì)繁瑣的，耗費(fèi)大、耗時(shí)長(zhǎng)、重復(fù)投資等等都是問(wèn)題，若采用復(fù)合業(yè)務(wù)視頻光傳輸系統(tǒng)，可以從較低層的道路監(jiān)控將圖像逐層匯聚傳輸，并且各種控制信號(hào)、報(bào)警聯(lián)動(dòng)信號(hào)、語(yǔ)音、電話、高速以太網(wǎng)等數(shù)據(jù)業(yè)務(wù)實(shí)現(xiàn)綜合傳輸。由于設(shè)備均由標(biāo)準(zhǔn)模塊搭建而成，在實(shí)際改造過(guò)程種并不需要更換或添加任何模塊。模塊化的使用和配置使光端機(jī)具有很強(qiáng)的靈活性。它摒棄了光端機(jī)從誕生至今十來(lái)年的傳統(tǒng)結(jié)構(gòu)，是光端機(jī)從模擬到數(shù)字之后又一個(gè)質(zhì)的飛躍，是視頻傳輸領(lǐng)域向以數(shù)據(jù)為主要業(yè)務(wù)的傳統(tǒng)通信領(lǐng)域靠攏的標(biāo)志。廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)數(shù)字光端機(jī)可傳輸RS232, RS485, RS422標(biāo)準(zhǔn)數(shù)據(jù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià),光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287100651396/3570245.png"></div><p style="text-indent:25px">光端機(jī)在安防領(lǐng)域有著重要的地位光端機(jī)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(lǐng)域中重要的地位，他解決遠(yuǎn)距離傳輸和大容量傳輸。因?yàn)榍岸藬z像頭等采集源的接口不同，光端機(jī)必須成對(duì)使用，一個(gè)光端機(jī)把前端的輸入信號(hào)轉(zhuǎn)換成光信號(hào)，另一個(gè)光端機(jī)再把光信號(hào)還原成輸入信號(hào)送給終端。這也意味著在安防施工的過(guò)程中，針對(duì)每一個(gè)布點(diǎn)線路我們都必須配用一對(duì)光端機(jī)。在安防解決方案中，各個(gè)方向的布點(diǎn)數(shù)據(jù)，都會(huì)匯集到監(jiān)控中心，如果我們能對(duì)光端機(jī)進(jìn)行整合，在光端機(jī)的設(shè)計(jì)中也引入交換機(jī)的概念，采用一個(gè)多路光端機(jī)來(lái)接入來(lái)自不同布點(diǎn)線路的光信號(hào)，我們就可以省去一半數(shù)量的光端機(jī)，對(duì)大型項(xiàng)目來(lái)說(shuō)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(jī)，多模形式在視頻圖像傳輸時(shí)，帶寬(針對(duì)模擬調(diào)制)和傳輸速率(針對(duì)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(jī)在傳輸距離、容量方面的應(yīng)用。</p><p style="text-indent:25px">光端機(jī)和光纖收發(fā)器的不同之處和相通之處。他們的相同之處：都要進(jìn)行光電轉(zhuǎn)換。他們的不同之處：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(lái)說(shuō)，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。另外，在使用上的話，光纖收發(fā)器不需要成雙的使用。然而光端機(jī)卻要成雙的使用，一個(gè)是光發(fā)射機(jī)，一個(gè)是剛接收，它的作用是接收從光纖傳來(lái)的光信號(hào)，并把光信號(hào)轉(zhuǎn)換回模擬信號(hào)傳送給顯示器。而且光端機(jī)的信號(hào)對(duì)流也便于期線路的檢修和維護(hù)。他們的區(qū)分主要在于他們的作用和使用上，如果在購(gòu)買的時(shí)候分不清楚外觀就把詳細(xì)的用途給服務(wù)人員他們會(huì)幫你做選擇。數(shù)字光端機(jī)是一種通過(guò)數(shù)字電路控制光信號(hào)，使用類似于0、1代碼來(lái)實(shí)現(xiàn)光通信的機(jī)器。應(yīng)用于光纖通信等領(lǐng)域。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià),光端機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637469287996943972/1730711.png"></div><p style="text-indent:25px">光端機(jī)的系統(tǒng)原理光傳輸系統(tǒng)由三部分組成：光源（光發(fā)送機(jī)），傳輸介質(zhì)、檢測(cè)器（光接收機(jī)）。按傳輸信號(hào)劃分，可分為數(shù)字傳輸系統(tǒng)和模擬傳輸系統(tǒng)。在模擬傳輸系統(tǒng)中，是把輸入信號(hào)變?yōu)閭鬏斝盘?hào)的振幅（頻率或相位）的連續(xù)變化。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。但由于光源的非線性較嚴(yán)重，因此其信噪比、傳輸距離和傳輸頻率都十分有限。數(shù)字傳輸系統(tǒng)是把輸入的信號(hào)變換成“1”，“0”表示的脈沖信號(hào)，并以它作為傳輸信號(hào)。在接受端再把它還原成原來(lái)的信息。這樣光源的非線性對(duì)數(shù)字碼流影響很小，再加上數(shù)字通信可以采用一些編碼糾錯(cuò)的方法，且易于實(shí)現(xiàn)多路復(fù)用，因此數(shù)字傳輸系統(tǒng)占有很大的優(yōu)勢(shì)，并在很多地方得到了應(yīng)用。光端機(jī)的使用中要保證連續(xù)、正常供電。北京PDH光端機(jī)交換機(jī)</p><p style="text-indent:25px">光端機(jī)，電信非壓縮光端機(jī)，就是將多個(gè)E1信號(hào)變成光信號(hào)并傳輸?shù)脑O(shè)備。廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)</p><p style="text-indent:25px">模擬光端機(jī)采用了PFM調(diào)制技術(shù)實(shí)時(shí)傳輸圖象信號(hào)。發(fā)射端將模擬視頻信號(hào)先進(jìn)行PFM調(diào)制后，再進(jìn)行電-光轉(zhuǎn)換，光信號(hào)傳到接收端后，進(jìn)行光-電轉(zhuǎn)換，然后進(jìn)行PFM解調(diào)，恢復(fù)出視頻信號(hào)。由于采用了PFM調(diào)制技術(shù)，其傳輸距離能達(dá)到50Km或者更遠(yuǎn)。通過(guò)使用波分復(fù)用技術(shù)，還可以在一根光纖上實(shí)現(xiàn)圖象和數(shù)據(jù)信號(hào)的雙向傳輸，滿足監(jiān)控工程的實(shí)際需求。這種模擬光端機(jī)也存在一些缺點(diǎn): a)生產(chǎn)調(diào)試較困難; b)單根光纖實(shí)現(xiàn)多路圖象傳輸較困難，性能會(huì)下降，這種模擬光端機(jī)一般只能做到單根光纖上傳輸4路圖象; c)抗干擾能力差，受環(huán)境因素影響較大，有溫漂; d)由于采用的是模擬調(diào)制解調(diào)技術(shù)，其穩(wěn)定性不夠高，隨著使用時(shí)間的增加或環(huán)境特性的變化，光端機(jī)的性能也會(huì)發(fā)生變化，給工程使用帶來(lái)一些不便。廣東環(huán)網(wǎng)光端機(jī)報(bào)價(jià)</p><p style="text-indent:25px">煙臺(tái)市正維通信技術(shù)有限公司辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，為員工打造良好的辦公環(huán)境。專業(yè)的團(tuán)隊(duì)大多數(shù)員工都有多年工作經(jīng)驗(yàn)，熟悉行業(yè)專業(yè)知識(shí)技能，致力于發(fā)展正維通信的品牌。公司以用心服務(wù)為重點(diǎn)價(jià)值，希望通過(guò)我們的專業(yè)水平和不懈努力，將目前正維通信的用戶已遍布電力、煤礦、軌道交通、高速公路、鋼鐵冶金、石油化工、城市智能交通、水處理等行業(yè)，正維通信通過(guò)覆蓋國(guó)內(nèi)30個(gè)省、市、自治區(qū)的銷售機(jī)構(gòu)和數(shù)十個(gè)重要的合作伙伴，使迅速響應(yīng)用戶需求成為現(xiàn)實(shí)，向客戶提供完善的售前支持和貼心的售后服務(wù)。等業(yè)務(wù)進(jìn)行到底。煙臺(tái)市正維通信技術(shù)有限公司主營(yíng)業(yè)務(wù)涵蓋工業(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，堅(jiān)持“質(zhì)量保證、良好服務(wù)、顧客滿意”的質(zhì)量方針，贏得廣大客戶的支持和信賴。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3098959.html</p></div></div></div></div></div><div id="w8byqsm" class="page-right twoColRt"><div id="g232uey" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cmtqszo" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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