OFI-3 fiber identifier

OFI-3 optical fiber identifier is a low cost, portable instrument designed to detect optical signals without disrupting online service. During installation and maintenance of optical network, it's often necessary to isolate a specific fiber, By simply clamping the OFI-3 on a fiber. The OFI-3 will indicate if there is a signal, the direction, the intensity and the modulation frequency. Specification Wavelength:900~1650nm Recognizable Signal Type:CW,270Hz±5%,1kHz±5%,2kHz±5%,1Hz Adapter Head: RB0.25,RB0.9,RB2.0,RB3.0 Sensitivity:minimum -50dBm Sensitivitywit hout Adapter Loss @1310nm: RB0.25:-20dBm,RB0.9:-20dBm,RB3.0:-20dBm ensitivitywit hout Adapter Loss @1550nm: RB0. 25:-30dBm,RB0.9:-30dBm,RB3.0:-30dBm Measuring Range: 1310nm: + 10dBm~-20dBm;1550nm:+10dBm~-30dBm