The utility model can connect the failure cables conveniently and rapidly and recover the equipment use to realize fast connection, compress the delay caused by cable interruption and reduce the loss. 本实用新型可方便快速地接通故障电缆,恢复设备使用,从而实现快速抢通,压缩因电缆中断而造成的延时,减少损失。
Study on Time Delay Detection Methods in Cable Monitoring Based on Higher Order Cumulant 基于高阶累计量的电缆监测中时延检测方法的研究
Interface design focuses on data transmission, the line bit rate, frame structure, line coding, synchronization and timing, bit error correction/ diction, link delay accuracy and cable delay calibration was all finished in FPGA chip. 接口电路设计的重点是数据的传输,物理层的线路比特率,数据链路层的帧格式,线路编码,位差错校验,同步以及时序,光纤链路延时测量等都是在FPGA中实现的。
On the other hand, the interface and protocol themselves have some disadvantages such as low-transmitting-clock, low anti-interference ability, and transmission delay, especially when the cable is long, so the use of the interface and protocol is limited. 另一方面,当前国外的这些接口及协议自身也存在传输速率低、抗干扰能力不高以及长线传输延时等问题,在使用中受到种种局限。