高速Cameralink视频信号的光纤传输系统设计

针对目前常用的Cameralink视频信号的光纤传输方案系统结构过于复杂的问题，提出一种基于MAX9249/MAX9268的Cameralink视频信号的光纤传输方案。在发送端利用MAX9249实现Cameralink视频信号解串行化、编码、串行化，得到光模块驱动信号CML；在接收端利用MAX9268实现CML信号解串行化、解码、串行化，得到Cameralink视频信号，并对光收发模块的设计与选型作了详细阐述。用示波器抓取发送端和接收端高速串行信号的眼图，结果比较清晰，眼睛张开度大，发送端的Q因子为24.46，满足发送端大于12的要求，接收端Q因子为8.13，满足接收端大于6的要求。计算机采集的实时画面，经过10 min传输无明显可视的像素噪点，验证了该传输方案的可行性和有效性。

Design of optical fiber transmission system for high speed Cameralink video signal

Aiming at the problem that the system structure of optical fiber transmission scheme of commonly used Cameralink video signal is too complicated, an optical fiber transmission scheme of the Cameralink video signal based on MAX9249 / MAX9268 was proposed.At the transmitting end, the Cameralink video signal was deserialized, encoded and serialized by using MAX9249 to obtain the optical module driving signal CML. At the receiving end, the CML signal was deserialized, decoded and serialized by using MAX9268 to obtain the Cameralink video signal, and the design and selection of optical transceiver module were detailed described.Finally, the oscilloscope was used to capture the eye diagrams of high-speed serial signals at transmitting end and receiving end. The eye diagrams of high-speed serial signals at transmitting end and receiving end are relatively clear and the eye opening degree is large. The Q factor at the transmitting end is 24.46, meeting the requirement of greater than 12 at transmitting end, while it is 8.13 at the receiving end, meeting the requirement of greater than 6. In addition, the real-time pictures acquired by the computer acquisition end has no obvious visible pixel noises after 10 minutes transmission, which proves the feasibility and effectiveness of the transmission scheme.