100M工作模式AFDX总线仿真器校准方法研究  

Research on Calibration Method for 100M AFDX Simulator

作　　者：付军立[1] 

机构地区：[1]北京长城计量测试技术研究所,北京100095

出　　处：《测控技术》2015年第8期146-149,共4页Measurement & Control Technology

摘　　要：为了解决航空电子全双工交换式以太网(AFDX)总线仿真器在100M工作模式下的校准问题,提出AFDX总线仿真器100M数据发送端和接收端的校准项目和校准方法。发送端校准项目包括差分信号幅度、上升时间、下降时间、波形过冲、占空比失真、发送抖动和回波损耗等;接收端校准项目包括共模抑制和回波损耗;校准方法采用直接测量法,通过标准设备完成AFDX总线仿真器的量值溯源。对开展AFDX仿真器的周期校准具有指导意义。In order to solve the calibration problem of avionics full duplex switched Ethernet（AFDX） bus simulator which is working in 100 M transmission rate,the calibration items with calibration methods for bus-data transmitting terminal and receiving terminal are proposed.The calibration items of transmitting terminal include differential signal amplitude,rise time,fall time,waveform overshoot,duty cycle distortion,transmitting jitter and return loss,etc.The calibration items of receiving terminal include common mode rejection and return loss.The direct measurement method will be used for AFDX simulator calibration,the traceability of AFDX simulator is incarnated by the standard equipments.It has guiding significance for the cyclical calibration of AFDX simulator.

关 键 词：AFDX 总线仿真器校准 差分三电平编码 

分 类 号：V243.1[航空宇航科学与技术—飞行器设计]