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如何设置我的E系列数据采集卡的计数器来获取可重触发模拟输入采集的功能？

硬件: Multifunction DAQ (MIO)>>E Series

问题:
我尝试进行模拟采集；我想每次数字触发信号应用到PFI0引脚时采集指定点数的数据。我知道我可以进行触发有限点数的模拟采集；然而，这是一次性的操作，而我需要能够重复。我如何实现这个应用？

解答:
这个应用的解决方案是使用E系列数据采集卡的计数器产生一个可重触发的脉冲序列，并使用该脉冲序列作为模拟输入操作的扫描时钟。为了设置计数器能够产生有限的脉冲序列，其中一个计数器配置为产生一个可重触发脉冲，第二个计数器配置为产生连续脉冲序列。第二个计数器由第一个计数器的输出作为其门信号，并提供扫描时钟。LabVIEW中详细的信号路由和编程在下面的链接提供的LabVIEW例程中会详细讨论到。

相关链接:
KnowledgeBase 15JBOEWW: How Can I Perform a Retriggerable Acquisition with LabVIEW?
KnowledgeBase 2P5EJFUV: How Can I Set the Counters on My E Series DAQ Card to Achieve a Re-Triggerable Analog Input Acquisition?
KnowledgeBase 1VQ9J3LL: How Do I Configure an Analog Input Acquisition with Multiple Triggers on an E Series DAQ Board?
KnowledgeBase 2JDFL3XA: Finite Pulse Train Generation Triggered by Both Rising and Falling Edges of a Trigger Pulse Using Analog Triggering
Developer Zone Example: Retriggerable Analog Input with Two DAQ-STC Counters (LabVIEW)
Developer Zone Tutorial: Tips and Techniques in Data Acquisition Triggering - NI-DAQmx

附件:





报告日期: 06/18/2006
最近更新: 12/11/2007
文档编号: 2P5EJFUV

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