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...
查看詳情Different monitoring environment will take different solutions. The correct construction scheme will improve the stability of the monitoring system, improve the construction efficiency a...
查看詳情監(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)...
查看詳情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 ...
查看詳情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...
查看詳情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...
查看詳情在確定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...
查看詳情今天我們來(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)...
查看詳情簡(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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