This presentation will look at some of the requirements for field testing Single Mode fiber to make sure it will support the new applications you are planning to run on it. From there the presentation will move on to the calculation of a loss budget, what is the correct budget, and what wavelengths should be tested, look at best practices in Tier I loss testing and review troubleshooting the fiber using an OTDR and give an introduction to the identification of common events in Single Mode OTDR traces. Viewers earn 1 BICSI CEC  Watch on Demand.