CETECOM Offers Dynamic Frequency Selection Testing to its Wi-Fi Customers
January 11, 2008: Milpitas, CA
CETECOM Inc. has added Dynamic Frequency Selection (DFS) testing to its comprehensive service portfolio. This is a major benefit for WLAN manufacturers who are now able to utilize Wi-Fi Alliance® Certification and DFS test services at one facility.
Dynamic Frequency Selection was designed to instruct “master” devices to monitor radar interference within selected frequencies in the 5GHz band. When interference such as a radar signal is detected, the channel is vacated for use and instructions are provided from the master to the “client” device to switch to another channel.
The European Union was one of the first to recognize Dynamic Frequency Selection with its ETSI standard EN 301 893. Since July 2007, DFS testing has been required in the US for devices operating in the 5.25-5.35 GHz and 5.47-5.725 GHz frequencies according to FCC PART 15 subpart E. At the moment, the FCC does not allow Telecommunication Certification Bodies (TCBs) to certify “DFS master” and “DFS client” devices with ad hoc capabilities. Thus it is crucial to complete DFS testing early since the lead-time for FCC approval can be 10-12 weeks.
The addition of DFS testing to CETECOM’s services further strengthens its offerings to WLAN manufacturers which already include: Wi-Fi Alliance® Certification, Converged Wireless Group (CWG) RF Performance, and world-wide regulatory testing and approvals. CETECOM continues to drive its service portfolio to new limits by offering its customers with quality services that meet their test and certification needs.