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有个项目用到了TDC7200，在采集脉冲端，接入示波器，波形正常，采集也正常，但是当我拿掉示波器后，采集数据就成了一个固定值，不随输入信号变化。
也就是只要在输入端挂一段线采集就正常了，好奇怪！！到底哪里有问题呢？
