Most of us are well aware that insertion loss budgets have gotten tighter as we have moved from 10 to 40/100 Gig for multimode fiber applications. One would think that we can’t say the same for singlemode applications that have historically meant larger loss budgets – 6.3dB for 100 Gig over singlemode (100GBASE-LR4) versus just 1.9dB for 100 Gig over multimode (100GBASE-SR4). But that’s no longer the case with new short-reach singlemode applications.
2019 年 8 月 6 日
Installers have been punching down copper twisted-pair cable for decades and still do so for terminating cables to IDC towers on jacks, patch panels and connecting blocks. While the practice hasn’t changed, punchdown tools have come a long way, and you now have some options at your fingertips. So how do you choose? 詳しく見ていきましょう。
2019 年 7 月 23 日
Many of these applications utilize twisted-pair cabling, and technology advancements now make it possible to deliver power to video displays simultaneously with these video signals over the same cabling. これらの AV システムに対応したケーブル配線システムの展開とテストを行う場合には、お客様が期待する完璧な画質を実現するための最良のテスト方法を理解する必要があります。
2019 年 7 月 17 日
It’s been a while since we’ve talked about OM5 multimode fiber, and despite its lime green color and being added to the ANSI/TIA-568.3-D standard in 2016, it hasn’t exactly been in the limelightbut it looks like that won’t always be the case.
2019 年 7 月 10 日
The 4th of July is always a time to reflect on our history, where we come from and the dedication of our founding fathers. But it’s also a time to look ahead, learn from past mistakes and progress towards a better future.
Our industry has a lot of history as well as traditional practices that we still use today simply because they work. But we also know that there are new ways of doing things, new parameters and new applications that are driving positive change.
2019 年 7 月 1 日
With the addition of the modular plug terminated link (MPTL) configuration to the latest ANSI-TIA 568.2-D standard, and now end-to-end (E2E) configurations getting some attention in ISO/IEC standards (and likely soon TIA as well), you might be overwhelmed with the choices and be wondering what you’re supposed to test and when. Let’s take a look.
2019 年 6 月 26 日
挿入損失と損失バジェットの理解：Make or break an ICT career Digital Transformation and Industrial IoT age Part 3 of 3
エキスパートのプロフィール：Vangie Michenzi、Advanced Communications Technology Services、光ファイバー・プロジェクトのシニア・マネージャー
Part 3 of a three-part series
In this day and age, with everyone preparing for the future of 5G, the internet of things, and industrial automation, if you’re a contractor or technician you better know and understand loss budgets!
2019 年 6 月 19 日
光ファイバー・リンクの送信信号 (Tx) は、もう一端の受信側と当然一致しなければなりません。しかし、正しく極性を判別し、この接続性の一貫性を維持しようとしてさまざまな混乱が生じています。特に多芯ファイバー MPO 接続では、片端の位置 1～ 12 の 12 本のファイバーが他端の対応する位置に接続されていなければなりません。
2019 年 6 月 12 日
If you’ve turned on the news in the past couple of months, or if you live anywhere in the southern or central U.S., you’re well aware that natural disasters are at an all-time high – from recent tornadoes that have stretched from Texas north to Minnesota and east to Pennsylvania, to the swelling Missouri, Mississippi, Arkansas and Ohio Rivers and their tributaries causing flooding in nearly two-thirds of the country. In fact, 2019 has already seen more than 1000 confirmed tornadoes (more than in all of 2018), and more than half happened in the month of May.
2019 年 6 月 6 日
Earlier this year, the IEEE released its 802.11ax Enhancements for High Efficiency Wireless (HEW) LAN standard, known commonly as Wi-Fi 6. This new advanced Wi-Fi application is positioned to theoretically deliver close to 10 Gig transmission through the use of eight spacial streams that each transmit at 1.2 Gb/s compared to Wi-Fi 5 (802.11ac) at just 866 Mb/s per special stream. It also has the ability to operate in both the 2.4 GHz and 5 GHz bands.
2019 年 5 月 29 日