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Original question:

PGA460: pga460回波数据有疑惑。

PGA460: 读取的距离不正常

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Prodigy 120 points
Part Number: PGA460

用示波器观察突发脉冲正常，回波信号也正常，但读取的距离始终不正常，一直是11米多，这是哪里的问题？该怎么解决呢？