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亲爱的,当我们连接到示波器的地面时,我们在接收地信号(0V)时遇到了麻烦。
出于某种原因,当我们将示波器连接到内部产生的方波信号和示波器接地时,地面似乎漂浮在大约20mV。 此外,即使示波器接地连接到外部电源地,地电平也不会改变。 可能是什么问题? 以上来自于谷歌翻译 以下为原文 Dear all, We are having trouble in getting a ground signal (0V) when we connect to the ground on the scope. For some reason when we connect the scope to the internally generated square wave signal and to the scope ground, the ground seems to be floating at about 20mV. In addition the ground level doesn't change even if the scope ground is connected to an external power-supply ground. What could be the issue? |
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2个回答
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第一个问题,我之前应该问过:你最后一次对示波器进行用户校准是什么时候?
我不知道6000系列的过程,但它可能会解决这个问题。 我想弄清楚偏移的位置。 您使用示波器探头吗? 如果是这样,忘记连接到示波器接地,将探头接地连接到探头信号时会看到什么? 使用不同的示波器探头,您会得到相同的结果吗? 如果您取下探头,并使用短路(如果以上所有显示一致的结果,那么问题就在范围内。如果用户校准周期没有修复它,那么您需要修理.Al 以上来自于谷歌翻译 以下为原文 First question, which I should have asked before: When was the last time you did a user calibration on the scope? I don't know the process for the 6000 series, but it might take care of the problem. I'm trying to figure out where the offset is. Are you using a scope probe? If so, forget connecting to the scope ground, what do you see when you connect the probe ground to the probe signal? Do you get the same results with different scope probes? If you take off the probe, and use a short (<10 cm) piece of wire to carefully short the inner conductor of the channel (signal) to the outer ring (ground), what do you see? If all of the above show consistent results, then the problem is in the scope. If a user calibration cycle doesn't fix it, then you need a repair. Al |
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nvywyerwer 发表于 2019-3-28 17:42 嗨Al,感谢您的回复。 仪器长时间未校准。 我将执行用户校准,看看它是否得到修复。 谢谢。 以上来自于谷歌翻译 以下为原文 Hi Al, Thanks for your response. The instrument has not been calibrated in a long time. I will perform the user calibration and see if it gets fixed. Thanks. |
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