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  • 光纖收發(fā)器分類

    時(shí)間:2021-04-10 593次瀏覽

    1、按性質(zhì) 從光纖的性質(zhì)來(lái)劃分,可以分為多模光纖收發(fā)器和單模光纖收發(fā)器。它們兩者的區(qū)別在于所傳輸?shù)木嚯x不一樣,多模收發(fā)器一般的傳輸距離在0.55公里到5公里之間,而單模收發(fā)器覆蓋的范圍可以...

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  • Several common transmission modes of monitoring

    時(shí)間:2021-03-17 627次瀏覽

    Different monitoring environment will take different solutions. The correct construction scheme will improve the stability of the monitoring system, improve the construction efficiency a...

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  • 監(jiān)控常用的幾種傳輸方式

    時(shí)間:2021-03-17 596次瀏覽

    監(jiān)控環(huán)境的不同,會(huì)采取不同的方案。采用正確的施工方案,一是會(huì)提高監(jiān)控系統(tǒng)的穩(wěn)定性,二是會(huì)提高施工效率,三是會(huì)降低成本。今天,我們一起來(lái)看看幾種不環(huán)境的傳輸方式。   一臺(tái)...

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  • You should not be unaware of the advantages of Poe switches

    時(shí)間:2021-03-15 618次瀏覽

    Simplify the wiring: Poe power supply is actually a line transmitting data and power supply at the same time, so that the network equipment no longer need expensive power supply and the ...

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  • Use of Poe switch! Four points for attention in practical monitoring engineering

    時(shí)間:2021-03-15 655次瀏覽

    Today, let's talk about Poe switches that are widely used in security monitoring. Now network digital surveillance camera often uses Poe switch, because Poe switch is a common switch...

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  • How to determine the capacity of Poe switch in one minute

    時(shí)間:2021-03-15 576次瀏覽

    Before determining the capacity of Poe switch, we need to make clear three concepts: Poe power supply standard, total power of Poe switch and power of receiving equipment.   T...

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  • 一分鐘教你怎么確定POE交換機(jī)的帶機(jī)量

    時(shí)間:2021-03-15 615次瀏覽

    在確定POE交換機(jī)的帶機(jī)量前,需要弄清楚三個(gè)概念,POE供電標(biāo)準(zhǔn)、POE交換機(jī)的總功率、受電設(shè)備功率。   POE功率標(biāo)準(zhǔn)有兩個(gè),即af和at標(biāo)準(zhǔn),前者的供電功率功率最大值是15.4W,到達(dá)受電...

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  • POE交換機(jī)的使用!實(shí)際監(jiān)控工程中的四個(gè)注意點(diǎn)

    時(shí)間:2021-03-15 547次瀏覽

    今天我們來(lái)說(shuō)說(shuō)安防監(jiān)控中應(yīng)用得比較多的POE交換機(jī)。現(xiàn)在網(wǎng)絡(luò)數(shù)字監(jiān)控?cái)z像頭常常會(huì)用POE交換機(jī),因?yàn)镻OE交換機(jī)是普通的交換機(jī)基礎(chǔ)上加入供電模塊。   POE交換機(jī)能通過(guò)網(wǎng)線給網(wǎng)絡(luò)攝像機(jī)...

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  • POE交換機(jī)的這些優(yōu)勢(shì),您不應(yīng)該不知道

    時(shí)間:2021-03-15 558次瀏覽

    簡(jiǎn)化布線:POE供電實(shí)際上是一根線同時(shí)傳輸數(shù)據(jù)和供電,使網(wǎng)絡(luò)設(shè)備不再需要昂貴電源和安裝電源所耗費(fèi)的時(shí)間,節(jié)省了費(fèi)用和時(shí)間。   應(yīng)用安全:POE供電端設(shè)備只會(huì)為需要供電的設(shè)備供電,...

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