TDRTime Domain Reflectometry is used to pinpoint flaws and problems in underground and aerial wire, cabling, and fiber optics.
Time Domain Reflectometers send a signal down the conductor and measure the time it takes for the signal -- or part of the signal -- to return. The signal's reflection begins at the flaw point. Once it returns, time is converted to distance, then divided by the speed of light, multiplied by the proper velocity of propagation (VOP), and the result is divided by two.
It is important to note that the final result does not describe the problem; it only tells the engineer where on the line to look for the problem.
Tape clearly is on the decline. But remember, legacy systems can hang for a shockingly long time. Read More »Apple Pay Promises to Strengthen Payment Security
Experts believe that Apple Pay and other competitive payment systems will be far more secure than cards, even cards equipped with EMV chips. Read More »Internet of Things Shaping IT's Future
To make the IoT both work and pay off, IT is juggling upgrading and building app-centric networks, mapping out new data center architectures and... Read More »
The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »How to Create a Desktop Shortcut to a Website
This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Read More »Flash Data Storage Vendor Trends
Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »