OTDR Settings Clause Samples

OTDR Settings. Settings on the OTDR should reflect the following: • The Refractive Index shall be set for the actual fiber utilized (commonly used Corning SMF-28 single mode fiber has a refractive index of 1.4677 at 1310 nm). • Pulse width of no greater than 100 ns (10m) for all fiber lengths. • Scattering coefficient specified by the fiber manufacturer for each wavelength tested. • A minimum of 10,000 sampling acquisitions (Averages). • Maximum range set to no more than 10 km for all fiber length less than 10 km; Maximum range set to no more than 25 km for fiber lengths greater than 10 km. • Event threshold: 0.05 dB