Fiber Optical Time Domain Reflectometry Otdr

Fiber Optical Time Domain Reflectometry OTDR It is used to measure the parameters of telecommunica - tion, CATV, LAN cable,insertion loss, isola-tion loss and echo loss of optical passive devices, and wavelength responsiveness of detectors. There are five modes of light source: CW,270 Hz, 330 Hz, 1 kHz and 2 kHz.