... General SpecificationsOptical output connectorFC-PC (standard)Display screen320×240 3.5 inch colored LCD (touch screen)PortUSB portPower supplyAC/DC ... 20~60°C(exclude the built-in battery)Relative humidity: (5~95) % ±5% (non-condensing)DimensionD×W×H: 200mm×100mm×60mmWeight:about ... Tech SpecificationsWavelengths 1310nm/1550nm±20nmFiber Under Test single mode Range(km)0.5, 1, 2, 4, 8, 16, 32, 64, ...