为了改进光电经纬仪导电环对所传输信号带来的各种性能损伤以及体积大带来的系统限制等缺欠,采用光纤通信代替导电环的方案。通过多路PAL制式模拟视频、多路数据通信信号的点对点(机上到机下)单纤双向传输以及光的万向连接来最终实现采用光纤通信取代导电环。在不接光万向连接器情况下,视频传输的延时为1μs左右。 In order to improve the photoelectric theodolite conductive ring on the signal transmission caused by a variety of performance damage as well as the volume of system constraints and other shortcomings, the use of optical fiber communication instead of conductive ring program. Through the multi-channel PAL analog video, multi-channel data communication signal point-to-point (on-to-machine) single fiber bi-directional transmission and universal light to achieve the ultimate use of optical fiber communication instead of conductive ring. In the case of non-light universal connector, the video transmission delay of about 1μs.