Shanghai Jiahui company newly developed a 5.6 inch color screen version of portable optical fiber spectrometer, it uses imported 512 pixels of InGaAs linear array detector, integrated design of reliable precision optical structure, improve the reliability of spectral measurement. The instrument provides real-time spectral curve display, which is convenient for users to quickly understand and analyze, and is an ideal tool for current optical fiber engineering maintenance and communication teaching and research. Custom properties: Miniature portable 5.6-inch screen touch screen, wide spectral range, high wavelength accuracy, suitable for single mode and multi-mode optical fiber input, provide communication protocols, easy for users to secondary design and development