3.5in Optical Time Domain Reflectometer Multifunctional Portable OTDR Tester Optical Power Meter 1550nm 80km Item Type: Optical Time Domain Reflectometer Mode: NK2800 Material: ABS Power Supply: Built in polymer lithium battery capacity 2200mah (shipped with built in battery) Optical Time Domain Reflectometer G.652 Single Mode Fiber Wavelength: 1550nm±20nm Maximum Allowable Power for Optical Test: 1490nm less than 10dBm 1577nm is less than 10dBm 1310nm is less than 10dBm 1270nm is less than 10dBm Maximum Dynamic Range: 20dB Minimum Event Blind Area: Approx. 2.5m / 8.2ft Attenuation Blind Area: Approx. 10m / 32.81ft Test Range: Approx. 100m / 328.1ft, 300m / 984.3ft, 500m / 1640.4ft, 1250m / 4101ft, 2500m / 8202.1ft, 5000m / 16404.2ft, 10000m / 32808.4ft, 20000m / 65616.8ft, 40000m / 131233.6ft, 80000m / 262467.2ft Test Pulse Width: 5ns, 10ns, 20ns, 30ns, 50ns, 80ns, 100ns, 200ns, 300ns, 500ns, 800ns, 1μs, 2μs, 3μs, 5μs, 8μs, 10μs, 20μs Range Accuracy: ±(1m+ sampling interval +0.005%× test distance) Refractive Index: 1.00000 to 2.00000 Reflection Accuracy: ±3dB Loss Measurement Mode: 4 point method, 5 point method Optical C: SC PC Optical Power Meter Wavelength Range: 800nm to 1700nm Wavelength Calibration: 850, 980, 1300, 1310, 1490, 1550, 1625, 1650 nm Measuring Range: 50 to +26dBm(standard) Recognition Frequency: CW, 270Hz, 330Hz, 1kHz, 2kHz Resolution: 0.01dB Uncertainty: ±5% Optical Connector Universal Connector: FC SC ST Stabilized Light Source The output wavelength is consistent with the OTDR output wavelength Laser Type: FP LD Output Power: ≥-5dBm Stability: CW,±0.5dB/15min (test after 15min preheating) Optical Connector: SC PC Visual Fault Location Operating Wavelength: 650nm±20nm Output Power: ≥10mW Working Mode: CW, 1Hz, 2Hz Optical Connector: Universal connector