: Product Name: OTDR Fiber Optic Reflectometer Type: NF-981 Dimension(LxWxD): 173x82x37mm Dynamic Range: 24dB/22dB Test Range:10m-60km Wavelength: 1310/1550nm OTDR/OLS Connector: FC/PC(Interchangeable SC/ST) Pulse Width: 5ns-10s Attenuation Dead Zone: 15m Event Dead Zone: 10m Sampling Point: 16K-128K Loss accuracy: 0.2dB/dB OPM: and26- 50dBm, 850/1300/1310/1490/1550/1577/1625nm, universal connector VFL: 10mW, universal connector LCD: 3.5-inch high-definition color LCD screen LED Light: Support Power supply: 3.7V, 4000mAh lithium battery Product Features: 1. Event Map: This function is one-click automatic test, which displays the length of the optical fiber link under test, event point type, breakpoint location and other information in a graphical form, and the results are clear and easy to understand. 2. Optical Power Meter: This fiber fault detector used for optical signal power testing, insertion loss testing, etc. of various types of equipment and optoelectronic components. (F1: Switch wavelength, F2: Set reference power, F3: Set reference power to zero, F4: Enter oscilloscope mode) 3. VFL - Visual Fault Location: Inject visible red light (650nm) into the optical fiber, and observe the light leakage position on the fiber under test to easily and accurately determine the location of the optical fiber fault point. 4. LS-stable Light Source: The stable light source wavelength is consistent with the OTDR wavelength and is used for telecommunications, CATV, and LAN optical cable parameter testing; light source device insertion loss, isolation, return loss testing; detector wavelength responsivity testing, etc. 5. Loss Test: 1310nm/1550nm light source and power meter are displayed simultaneously for convenient testing. Optical passive device insertion loss, isolation, return loss testing. 6. RJ45 line sequence test: Please connect the remote module for RJ45 line sequence measurement during the test. 7. OTDR waveform zoom, can enter zoom mode. 8. OTDR files can be saved.