One Hundred Year MTBF – Wait, what?

By    March 13, 2015

For leased-line replacement in critical infrastructure and IIoT (Industrial Internet of Things) applications, long-term reliability is critical to both the operational mission as well as return on investment. Many of our customers issue requests for proposals that ask for the MTBF, or Mean Time Between Failure, on our ruggedized PTP solutions. Our response is that based on field return data on more than 10 years of shipments, we can predict a greater than 100-year MTBF. Based on more than 14 months of deployments with PTP 650, our latest sub-6 GHz PTP product, this reliability level has been achieved once again. But reaching MTBF exceeding a century does not happen by luck or wishing for it. One-hundred-year MTBF product development is in our engineering DNA and evident in our circuit design, component selection, design validation testing and factory testing. 

Before each design is even released to the factory, units are designed with industrial-grade components. Then the design is tested by third party lab facilities to ensure compliance with military standards (MIL-STD-810G) for shock, vibration, temperature, humidity and exposure to salt fog to simulate corrosive environments – basically the most intense environments that would ever befall our equipment. Samples are submerged in one meter of water for 30 minutes to make sure everything is air and water tight against the elements, and even placed in a wind tunnel and subjected to 200 miles per hour (320 kilometers per hour) winds to ensure everything stays in alignment. 

At the factory, every single PTP 650 is validated to function at any temperature between -40°C (-40°F) to 60°C (140°F). Each unit is placed in an oven and functionally tested (ability to pass data to another radio) at room temperature, -40°C and 60°C. The test ensures that the radio will start up even after sitting idle at -40°C. That is a 100 percent confirmation on every unit leaving our factory.

To make sure the link keeps operating and the data keeps flowing, our LINKPlanner design tool provides an availability prediction enabling what-if scenarios to determine the deployment steps needed to reach 99.999 percent reliability. 

And while operational, the radio continuously self-optimizes for reliable connectivity with Dynamic Spectrum Optimization™.

Deploying a private wireless network to replace leased lines is a low-hanging fruit project to reduce operating expenses. To learn more about PTP 650 and the reliable service that adopters are currently experiencing, read about our successful deployments in networks all over the world: Z-Net (Hungary), Hackensack UMC (US) and Traeger Park (Australia).