Laser Source TW3111 Is a handheld optical light source, newly released in 2007. It can provide 1 to 6 wavelengths output to satisfy specific requirements including the 650nm visible light source and the 1310/1550nm wavelengths for single mode fiber or the 850/1300nm wavelengths for multimode fiber, as well as other wavelengths according to customer’s needs. Together with the TW3211 optical power meter, it is a perfect solution for fiber optic network applications. FeaturesCW, 2Hz modulation output at 650nm, and CW, 270Hz,1KHz,2KHz modulation output at other wavelengths. Provides 1~6 wavelengths output which can be optional according to customers’ needs High stability of the output power Stable output wavelength Backlight LCD display supports night operation Low battery power indication ApplicationsMaintenance in Telecom Maintenance CATV Test Lab of optical fibers Other Fiber Optic Measurements