Fiber testing standards from IEC, TIA, and FOA provide the technical details you need for reliable performance and certification. Note: Always check with your local authority before starting a project. Local codes may have unique requirements that go beyond national standards. IEC 61315 defines all the steps involved in. Listing of all FOA standards FOA Standard FOA-1: Testing Loss of Installed Fiber Optic Cable Plant, (Insertion Loss, TIA OFSTP-14, OFSTP-7, ISO/IEC 61280, ISO/IEC 14763, etc. Accredited by the Swiss Accreditation Service (SAS) since March 2002, our Test and Calibration Laboratory upholds ISO/IEC 17025:2017 standards. This Applications Engineering Note (AEN 135) explains and recommends standard measurement methods for characterizing optical fiber system performance.