From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
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这个问题在任何一种多机箱拓扑中都会出现,当然包括星形拓扑,例如在相同的机箱中配置多个NI 9469。过采样时钟需要在cDAQ背板上进行特殊的路由。NI 9469到NI 9469的路由这样一个用例,在DAQmx 9.5.x中是不被支持的。
这代表一个星形拓扑不会轻易地就能工作。附件中是范例,在图1中也贴出了部分,为路由DSA过采样时钟来同步多机箱任务提供了解决方案。方案中指定了系统所有时基和同步脉冲的目标和源。范例详细的说明了如何使用DAQmx Timing and Triggering属性节点来路由这些信号。
图1 使用NI 9469星形拓扑进行DSA同步范例
这个问题在DAQmx 9.6以及后面的版本中已经被修复,详见CAR #334408。
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