1、按性質 從光纖的性質來劃分,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)別在于所傳輸的距離不一樣,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,會采取不同的方案。采用正確的施工方案,一是會提高監(jiān)控系統(tǒng)的穩(wěn)定性,二是會提高施工效率,三是會降低成本。今天,我們一起來看看幾種不環(huán)境的傳輸方式。 一臺...
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交換機的帶機量前,需要弄清楚三個概念,POE供電標準、POE交換機的總功率、受電設備功率。 POE功率標準有兩個,即af和at標準,前者的供電功率功率最大值是15.4W,到達受電...
查看詳情今天我們來說說安防監(jiān)控中應用得比較多的POE交換機。現在網絡數字監(jiān)控攝像頭常常會用POE交換機,因為POE交換機是普通的交換機基礎上加入供電模塊。 POE交換機能通過網線給網絡攝像機...
查看詳情簡化布線:POE供電實際上是一根線同時傳輸數據和供電,使網絡設備不再需要昂貴電源和安裝電源所耗費的時間,節(jié)省了費用和時間。 應用安全:POE供電端設備只會為需要供電的設備供電,...
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