Dynamic frequency selection is a technology that is designed to ensure that wireless devices operating in the unlicensed WLAN 5 GHz bands are able to detect when they may be interfering with military and weather radar systems and automatically switch over to another frequency where they will not cause any disturbance. These formal requirements are in effect in the USA, Canada, Europe, Japan, Australia, Korea and other markets around the world.
Dynamic frequency selection standards employ specific terminology to establish test parameters:
NTS is authorized to provide testing and certification of a wide range of devices employingdynamic frequency selection technology. To discuss the specific requirements of your project with one of our engineers, contact an NTS testing lab near you.
According to the requirements of the standard being tested for, dynamic frequency selection testing may look at a number of potential factors:
In addition to these factors,load uniformity orload spreading is a requirement of many international dynamic frequency selection testing standards. It requires that devices employ one of the following:
With our expertise in international dynamic frequency selection certification, NTS can develop a testing protocol that ensures you maintain compliance with these and other important factors.
NTS is widely acknowledged to be a leading provider of DFS-related compliance testing and certification services. Our experts participated directly in the DFS standards development process with the FCC, Department of Defense, and other industry representatives and we are capable of testing to all current North American, Japanese, Korean and European Union standards for DFS, including the latest versions of the European standard EN 301 893 V1.5.1. Why take chances with less experienced service providers who might lack the true capabilities to ensure that your products will meet these critical new requirements? NTS is your proven provider of fast and reliable DFS testing and certification services!
The following link is to the FCC's report and order FCC-06-96A1 released on June 30, 2006:
More information on the European Union's DFS requirements can be found at:
The following link will take you to the FCC's recommendations/requirements for special operational modes for testing Part 15E UNII devices with DFS and radar detection capability: