布线发展史

有时…是电缆

有一则广告是这样说的:“我们了解真相,是因为我们亲眼目睹。”我们的测试仪已经对数十亿条链路进行了成功认证,每个工作日,每秒钟就会认证至少5条链路,因此我们几乎对所有可能出现的布线问题都了然于胸,这意味着我们看到过大量不良线缆。

2020 年 1 月 23 日

工业以太网连接器聚集

在过去的十年中,我们听到了很多物联网(IoT)相关信息,由传感器技术驱动的联网设备和集成系统的数量不断增加,以及传统的专有和模拟设备向基于IP的通信转变。虽然IoT这一术语现在似乎有点过时了,但随着类似的技术进步正在工业领域悄然发生,术语IIoT(工业物联网)正变得越来越流行,相较于传统的现场总线协议,工业以太网在市场占有率方面已位居首位。

2020 年 1 月 16 日

History of the RJ45: A Case of Mistaken Identity

业内经常用术语“RJ45”表示模块式8槽8触点(8P8C)接口,该接口部署用于通过双绞线铜缆实现的以太网,虽然这种说法基本上是张冠李戴。

但既然RJ45这个名称已经延续了下来,我想我们也许应该仔细了解一下这种命名法的历史,以及为什么时至今日它仍然是双绞线以太网应用的事实标准。

2020 年 1 月 2 日

电缆测试 101:什么是我的损耗预算?

While you might hear your CFO grumbling about staying under budget from a dollar perspective, staying under your loss budget from a fiber perspective has a much bigger impact on your network performance – which ultimately impacts your bottom line by avoiding downtime.

But how exactly is your loss budget defined and how do you ensure you don’t exceed it?

2019 年 12 月 26 日

This Decade’s Top 5 Tech Flicks for Your Holiday Downtime

As we head into the holidays and a new decade, you may find that you’ve finally got some time to wind down at home as you use up the remainder of this year’s vacation days. And even if you’re stuck in the office keeping the network up and running, it’s a quiet time of year that might warrant a long lunch to watch Netflix on your laptop.

2019 年 12 月 17 日

Fluke Networks Previews Single Pair Ethernet Testing at Industrial Automation Show

Single Pair Ethernet (SPE) is making waves in the industrial automation world as a potential replacement for fieldbus architectures. At the recent Rockwell Automation show, Fluke Networks demonstrated a prototype Single-Pair Ethernet (SPE) adapter for the DSX-8000. 

2019 年 12 月 5 日

Anixter’s New Utility Grade Infrastructure

Fluke Networks has announced support for Anixter’s Utility Grade Infrastructure.  That means that Anixter Certified UTG Integrators can use the DSX CableAnalyzer to certify their installations.  We thought we’d explore the UTG program and what it offers the marketplace.

2019 年 11 月 30 日

Troubleshooting Fiber on the Cheap

If you troubleshoot fiber on a regular basis, you probably have an array of tools to help you do the job, including an Optical Time Domain Reflectometer.  But we often get questions from customers who don’t troubleshoot fiber enough to justify such an expensive tool. 

2019 年 11 月 21 日

The Poet’s Guide to the Physics of Twisted Pair Cabling

I once took a class where the professor would explain concepts in two ways.  First, he would dive into the mathematics behind the idea, filling the whiteboard with equations and showing how they all related to one another.  He tagged this “for the engineers”.  Then, he would explain the concept again, but this time, with no math at all.  This he said, was “for the poets”. 

2019 年 11 月 14 日