Check the listing for details. 1310 1550nm SM Optical Light Source Fiber Optic Light Source LCD Display TL-512. Condition: New. Listed at 68.50 USD. Description TL-512 1310/1550nm SM Optical Light Source Fiber Optic Light Source Designed with FC Connector Features: - Two wavelengths can meet the different needs of customers - Large LCD display is user-friendly and intuitive. Small size; simple and easy to use - Calibration is available for optical power meters and optical attenuators - With a highly stable laser, it provides a highly stable output power - It has a continuous wave output and 3 modulation frequencies, including 270Hz, 1KHz and 2KHz - Portable design: its body is equipped with a shockproof sleeve to improve the instrument's field adaptability, and there is a dust cover to protect the optical interface - Low electric quantity indication and automatic shutdown - Easy to use: single interface achieves dual wavelength output - Power saving mode: it will automatically power off when it is not used for 10 minutes - A soft portable bag protects the instrument well and makes it easy to carry Specifications: - Model number: TL-512 - Output wavelength: 1310/1550nm - Output power: >-7dBm - Laser type: LD - Spectral width: 5nm - Short-term stability: 0.01dB at 5 minutes - Long-term stability: 0.1dB at 24 hours - Optical fiber type: SM - Audio carrier: 0Hz, 270Hz, 1KHz and 2KHz - Display information: Selected wavelength, electric quantity, carrier status, output power and power supply status - Power automatic power off: Automatically power off in 10 minutes - Continuous working hours: >30 hours - Servo stabilization circuit: With - Operation sound prompt: With - Storage temperature: -20 to 70°C - Operating temperature: -10 to 60°C - Relative humidity: