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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hwya9ef" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shxiongbei/637361364018642578/1274226.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8y72myk" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河北智能電視系統(tǒng)升級(jí),電視系統(tǒng)工程</p><p><span>***更新：</span>2021-01-02 00:28:33</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="r8kbkrd" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海熊貝信息技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>唐繼兵</p><p><span>郵箱: </span>tangjibing988428@163.com</p><p><span>電話: </span>19901672612</p><p><span>傳真: </span>199_</p><p><span>網(wǎng)址: </span>http://www.shxiongbei.com</p><p><span>手機(jī): </span>199-0167</p><p><span>地址: </span>青村鎮(zhèn)青村南路355號(hào)5幢135室</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="8pgyc3l" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="337ze7q" class="box"><p><p style="text-indent:25px">有線電視系統(tǒng)工程的基礎(chǔ)知識(shí)：分支分配器：（1）分支器：BR一分支符號(hào):INOUT(插入損耗)；A:插入損耗:是信號(hào)從干線輸入端到干線輸出端之間的傳輸損耗，即輸入信號(hào)電平(dB)與輸出信號(hào)電平(dB)之差,用dB表示。B:分支損耗:是信號(hào)從干線輸入端到分支輸出端之間的損耗，即干線輸入端電平(dB)與分支端輸出電平(dB)之差,用dB表示，河北智能電視系統(tǒng)升級(jí)。C:分支損耗與插入損耗之間的關(guān)系是:分支損耗大，河北智能電視系統(tǒng)升級(jí)，河北智能電視系統(tǒng)升級(jí)，則插入損耗小;分支損耗小，則插入損耗大。D:分支口與插入損耗之間的關(guān)系是:分支口越多，插入損耗越大。我們實(shí)際上設(shè)計(jì)中通常按照2DB來計(jì)插入損耗。電視系統(tǒng)工程可以加快廣播電視自身的發(fā)展。河北智能電視系統(tǒng)升級(jí)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北智能電視系統(tǒng)升級(jí),電視系統(tǒng)工程" src="https://tyunfile.71360.com/UploadFile/shxiongbei/637361364018642578/1274226.png"></div><p style="text-indent:25px">電視系統(tǒng)工程的組成：（1）傳輸網(wǎng)絡(luò)。傳輸網(wǎng)絡(luò)處于前端設(shè)備和用戶分配網(wǎng)絡(luò)之間，其作用是將前端輸出的各種信號(hào)不失真地、穩(wěn)定地傳輸給用戶分配部分。傳輸媒介可以是射頻同軸電纜、光纜、微波或它們的組合，當(dāng)前使用較多的是光纜和同軸電纜混合（HFC）傳輸。（2）分配網(wǎng)絡(luò)。有線電視的分配網(wǎng)絡(luò)都是采用電纜傳輸，其作用是將放大器輸出信號(hào)按一定電平分配給樓棟單元和用戶。（3）用戶終端。用戶終端是接到千家萬戶的用戶端口，用戶端口與電視機(jī)相連。用戶端口普遍采用單口用戶盒或雙口用戶盒，或串接一分支。未來用戶終端包括機(jī)頂盒、電纜調(diào)制解調(diào)器、解擾器等。無錫電視系統(tǒng)公司電視系統(tǒng)工程的發(fā)展對整個(gè)社會(huì)產(chǎn)生較為深刻的影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北智能電視系統(tǒng)升級(jí),電視系統(tǒng)工程" src="https://tyunfile.71360.com/UploadFile/shxiongbei/637361364420468750/3246034.png"></div><p style="text-indent:25px">有線電視系統(tǒng)工程的優(yōu)點(diǎn)：（1）收視節(jié)目多，圖像質(zhì)量好。在有線電視系統(tǒng)中可以收視當(dāng)?shù)仉娨暸_(tái)開路發(fā)送的電視節(jié)目，他們包括VHF和UHF各個(gè)頻道的節(jié)目。有線電視采用高質(zhì)量信號(hào)源，保證信號(hào)的高水平，因?yàn)橛秒娎|或光纜傳送，避免了開路發(fā)射的重影和空間雜波干擾等問題。（2）有線電視系統(tǒng)可以收視衛(wèi)星上發(fā)送的我國以及國外C波段及ku波段電視頻道的節(jié)目。（3）有線電視系統(tǒng)可以收視當(dāng)?shù)赜芯€電視臺(tái)（或企業(yè)有線電視臺(tái)）發(fā)送的閉路電視。閉路電視可以播放不錯(cuò)的影視片，也可以是自制的電視節(jié)目。</p><p style="text-indent:25px">電視系統(tǒng)工程的主要功能：可通過主機(jī)時(shí)間程序設(shè)定操作，可對系統(tǒng)內(nèi)的部分設(shè)備進(jìn)行分時(shí)控制,如:醫(yī)院有的區(qū)域夜間不需要監(jiān)控，那就可從軟件編程設(shè)置，來自動(dòng)控制這部分的監(jiān)控設(shè)備不讓在夜間工作。這樣，完全可以減少設(shè)備不必要的運(yùn)行,從而達(dá)到有效節(jié)能的效果。系統(tǒng)的操作和編程均用符合人體工程學(xué)的全功能鍵盤完成。在鍵盤上，可以為操作人員設(shè)置不同的優(yōu)先級(jí)別，并可限制某些操作人員對某些功能的控制，從而增強(qiáng)了系統(tǒng)的靈活性和安全性。電視系統(tǒng)工程保證電視頻道整齊統(tǒng)一，方便管理。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北智能電視系統(tǒng)升級(jí),電視系統(tǒng)工程" src="https://tyunfile.71360.com/UploadFile/shxiongbei/637361363915615235/5638387.png"></div><p style="text-indent:25px">有線電視系統(tǒng)工程的組成：（1）傳輸網(wǎng)絡(luò)。傳輸網(wǎng)絡(luò)處于前端設(shè)備和用戶分配網(wǎng)絡(luò)之間，其作用是將前端輸出的各種信號(hào)不失真地、穩(wěn)定地傳輸給用戶分配部分。傳輸媒介可以是射頻同軸電纜、光纜、微波或它們的組合，當(dāng)前使用較多的是光纜和同軸電纜混合（HFC）傳輸。（2）分配網(wǎng)絡(luò)。有線電視的分配網(wǎng)絡(luò)都是采用電纜傳輸，其作用是將放大器輸出信號(hào)按一定電平分配給樓棟單元和用戶。（3）用戶終端。用戶終端是接到千家萬戶的用戶端口，用戶端口與電視機(jī)相連。用戶端口普遍采用單口用戶盒或雙口用戶盒，或串接一分支。未來用戶終端包括機(jī)頂盒、電纜調(diào)制解調(diào)器、解擾器等。有線電視系統(tǒng)工程在我國得到了飛速的發(fā)展和完善。南昌電視系統(tǒng)哪個(gè)好</p><p style="text-indent:25px">電視系統(tǒng)工程有著多種方式的交互式應(yīng)用。河北智能電視系統(tǒng)升級(jí)</p><p style="text-indent:25px">智能電視系統(tǒng)工程有什么特點(diǎn)？1.智能：讓普通電視像智能手機(jī)一樣，具有全開放式平臺(tái)，搭載暗咒操作系統(tǒng)，可以自由安裝和卸載軟件，游戲等，通過此類程序來不斷對電視機(jī)的功能進(jìn)行擴(kuò)充，并可以通過網(wǎng)絡(luò)來實(shí)現(xiàn)網(wǎng)上沖浪。2.健康：智能電視系統(tǒng)提供了一種全新的客廳文化，把電腦移植到客廳的高清電視機(jī)上，超大屏幕高清液晶電視機(jī)在客廳里實(shí)現(xiàn)一切電腦的功能，再配上智能飛控就可以躺在沙發(fā)上暢游網(wǎng)絡(luò)，形成一種后仰文化，遠(yuǎn)離電腦的復(fù)雜和病菌的侵?jǐn)_，遠(yuǎn)離各種輻射和長時(shí)間前傾彎腰，操作電腦引發(fā)的各種疾病。河北智能電視系統(tǒng)升級(jí)</p><p style="text-indent:25px">上海熊貝信息技術(shù)有限公司位于青村鎮(zhèn)青村南路355號(hào)5幢135室。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下IPTV電視系統(tǒng)，監(jiān)控系統(tǒng)，弱電工程深受客戶的喜愛。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造安全、防護(hù)良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2661540.html</p></div></div></div></div></div><div id="xroar2i" class="page-right twoColRt"><div id="jwtvho7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qjqhjf7" 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