Main features `28/26/24dB high dynamic range (1310nm/1550nm/1490nm) `1.6m extra-short event dead zone `0.1m high resolution, 65535 sampling points `Auto measuring with high speed, one-button operation `Advanced TFT color LCD, visible clearly in outdoor `Visible fault locating (VFL) `Large internal memory for data storage `High speed USB port for connectivity and data storage `Over 10 hours of battery operation life `Write/read file in Bellcore GR196 file format `Attached with trace analyzing software, professional report can be generated immediately `Updating system on-line Main Specifications: Model POK-2+ POK-2C Pulse Width 10ns to 10240ns Central Wavelength 1310nm/1550nm+/-15nm 1310nm/1550nm+/-15nm /1490nm+/-20nm Applicable Fiber Single-mode Dynamic Range (SNR=1) 28/26/24dB Event Dead Zone*1 <=1.6m Distance Range 1.6km-256km Sampling Resolution 0.1m-16m Sampling points 65k Distance Accuracy +/-(1m+sample space + measurement distance*0.003%) Display Color LCD (touch screen) Interface USB Optical Connector FC/UPC(universal connector, option) Power Supply DC: 10V-6V(3A),(AC adapter 100-240V, 50/60Hz,1.5A), Battery Life >=10 hours Powering AC, and built-in Rechargeable Lithium battery *1:Pulse width: 10 ns, terminal reflection loss: >=40 dB, typical. Specifications subject to change without notice. Ordering information POK-2+ 1310/1550nm double wavelengths，28/26dB，with an advanced power meter POP-560. POK-2C 1310/1550nm/1490nm tri-wavelengths，28/26/24dB, with an advanced power meter POP-560. POK-2L+ 1310/1550nm double wavelengths，28/26dB，with a Multi Tester POL-580 POK-2CL 1310/1550nm/1490nm Tri-wavelength，28/26/24dB，with a Multi Tester POL-580