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安捷伦科技推出用于FlexRay标准的Infiniium系列示波镜

2008年01月09日 15:25:00 中国传动网

安捷伦科技有限公司(NYSE: A)于2008年1月8日宣布推出应用于FlexRay全面触发、协议解码、调试和眼图分析能力测试的Infiniium系列示波镜。此测试解方案允许利用嵌入式微处理器的汽车设计师校验其FlexRay信号的完整性,有效的调试协议和信号整合性。 FlexRay系列总线是带有时间触发机制和确定性架构的汽车通信总线。设计师们可以迅速适应此高性能、容错总线,尤其是现今的高端技术汽车,包括宝马X5 SUV系列,在其中支持悬架应用。由于FlexRay协议具有容错的特性,FlexRay技术有望在不久的将来被用于许多安全-关键技术应用上,如线控转向、线控制动和空中防撞系统。 基于安捷伦FlexRay分析解决方案的Infiniium支持用户选择性标准数据级如:2.5 Mbps, 5.0 Mbps, 10 Mbps. 解码信息可展示出架构ID、循环号和FlexRay信号的有效栽荷。 除FlexRay总线的解码之外,此新选项在理想的10-MHz FlexRay时钟的再同步基础之上,执行软件时钟恢复功能, 以实现BSS事件。此恢复时间被用于创造和显示实时眼图。一个FlexRay实时眼可提供FlexRay信号质量的复合图,包括系统抖动的自动测量。基于TP1, TP2, TP3和TP4要求之上的眼罩,也可被用于自动化通过/失败性测试。如果眼罩测试失败,工程师们可以很方便地打开眼图,以快速查找失败错误的地方。 汽车的嵌入式设备,包括FlexRay装置,必须在模拟的极端的环境舱条件下经过测试。这些极端条件可能包括ECU测试和在温度超过100℃下的差分串行总线。在现今典型的有源探测器中的有源电路不能承受超过55℃的温度。但是,工程师们可以利用安捷伦1130系列InfiniiMax有源探测器和N5450A SMP微波延伸电缆扩充和代替探测器的有源放大器,所以其就可将环境舱置于问题之外。此配置允许工程师们连接InfiniiMax的探测器头在-55℃到+155℃范围之间进行点测试。 更多关于安捷伦N5402A信息请登录:www.agilent.com/find/n5402a ,FlexRay测试系统图片下载可登录:www.agilent.com/find/n5402a_images . 关于FlexRay标准和FlexRay协会的信息请登录www.flexray.com [font=times]original text [/font] [font=times]Agilent Technologies Introduces FlexRay Automotive Application for Infiniium Series Oscilloscopes [/font] [font=times][color=#708090]Agilent Technologies Inc. (NYSE: A) today introduced a measurement application that provides comprehensive FlexRay triggering, protocol decode, debug and eye-diagram analysis capabilities for Infiniium Series oscilloscopes. This measurement solution allows automotive designers who use embedded microprocessors to verify proper signal integrity of their FlexRay signals and effectively debug protocol and signal integrity issues. The FlexRay serial bus is an automotive communication bus with a time-triggered, deterministic architecture. Designers are rapidly adopting this high-performance, fault-tolerant serial bus, especially for today‘s higher-end automobiles, including BMW‘s X5 SUV, where it is being used initially to support a suspension application. Because of the fault-tolerant nature of the FlexRay protocol, FlexRay technology is expected to be used in the near future for many safety-critical applications such as steer-by-wire, brake-by-wire and collision-avoidance systems. The Infiniium-based Agilent FlexRay analysis solution supports user-selectable standard data rates of 2.5 Mbps, 5.0 Mbps, and 10 Mbps. The decoded information shows the frame ID, cycle number and the payload of the FlexRay signal. In addition to decoding the FlexRay bus, this new option performs a software clock recovery based on re-synchronization of an ideal 10-MHz FlexRay clock to each byte start sequence (BSS) event. This recovered clock is used to create and display a real-time eye diagram. A FlexRay real-time eye provides a composite view of the quality of FlexRay signals, including an automatic measure of system jitter. Masks based on TP1, TP2, TP3 or TP4 requirements can also be applied for automatic pass/fail testing. If a mask test fails, engineers can easily "unfold" the eye diagram to quickly locate the failed bit. Automotive embedded devices, including FlexRay devices, must be tested under simulated extreme conditions in environmental chambers. These extreme conditions may include testing ECUs (engine control units) and differential serial buses at temperatures exceeding 100 degrees Celsius. The active circuitry in today‘s typical active probes cannot tolerate temperatures exceeding 55 degrees Celsius. However, engineers can use Agilent 1130 Series InfiniiMax active probes and N5450A SMP microwave extension cables to extend and displace the probe‘s active amplifier so it is outside the environmental chamber. This configuration allows engineers to connect InfiniiMax passive probe heads to test points within the chamber at temperatures ranging from -55 C to +155 C. Additional information about the Agilent N5402A is available at www.agilent.com/find/n5402a. A photo of the FlexRay measurement system is available at www.agilent.com/find/n5402a_images. Information about the FlexRay standard and the FlexRay Consortium can be found at www.flexray.com.[/color][/font]
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