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很不幸,6008/9不能设置可重复触发,因为这样要两个计数器,但6008/9只有一个计数器,限制了事件计数。
然而,边进行持续模拟采集并同时在通道0输入触发信号,这个办法还是可以满足的。可以通过追溯采集数据来分析得到哪些数据是触发前得到的哪些是触发后得到的。当然如果采样率很高的话,这种方法也可能导致采到的数据量太大,而真正需要的触发前的数据又非常少。
参看以下关于可重复触发的模拟输入的链接
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