双向不对称同步数据业务接入设计  

Design of an Access Scheme for Bidirectional Asymmetry Synchronous Data Service

作　　者：林习良[1] 周锦标[1] 赵乾宏[1] 庄乾波[1] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《飞行器测控学报》2012年第5期63-66,共4页Journal of Spacecraft TT&C Technology

摘　　要：根据数据传输设备业务板卡功能特点,采用2个端口绑定的方式解决了双向不对称同步数据业务接入问题,针对链路调试过程中出现的数据传输不稳定现象,通过测试接口信号波形质量和时序关系,发现发送定时信号占空比及其与发送数据间的时序关系不符合相关标准要求,分析对此产生的影响并提出相应解决方案。通过对不同方式实施效果的分析评估,确定了设备连接状态,实际测试验证与理论分析结果完全相符,提高了传输的稳定性和可靠性,并在重要数据传输工程中得到应用,可为解决同步数据传输不稳定问题提供参考。Binding of two ports is used to facilitate access of bidirectional asymmetric synchronous data service fol-lowing study of the functional characteristics of the service cards of data transmission equipment. Waveform quality and time sequence of the interfaces are tested to determine the cause of instability of data transmission during link in- tegration and test and it is found out that the duty cycle of the clock and the time relationship between clock and transmitted data is not in compliance with relevant standards. A solution is proposed following analysis of the im-pact. The state of inter-facility links is determined following analysis and assessment of the effects of different im-plementation approaches. Tests confirm agreement with the results of theoretical analysis. Improving transmission stability and reliability, the design is used in key data transmission projects.

关 键 词：不对称 同步数据 时序关系 占空比 接口 

分 类 号：TN913[电子电信—通信与信息系统]