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HT60004BC二次开获取波形数据计算电压值偏大?

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Post time 2019-12-20 16:41:47 | Show all posts |Read mode
我调用 DLL_API WORD WINAPI dsoHTGetData(WORD nDeviceIndex, WORD* pCH1Data,  WORD* pCH2Data, WORD* pCH3Data,   WORD* pCH4Data,  PCONTROLDATA pControl)函数,根据(pCH1Data[i]- 通道垂直位置)×电压档位/32 这个公式计算的电压比实际打压大200mV左右,请问是什么原因导致的?
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Post time 2019-12-24 16:58:23 | Show all posts
您可以查看是否是零电平的问题,或者通过计算Vpp来验证。

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 Author| Post time 2020-1-3 19:21:52 | Show all posts
对不起,我描述有误,应该是电压值绝对值比实际电压绝对值大20%左右。通道垂直位置我已经设为128了

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 Author| Post time 2020-1-3 19:24:51 | Show all posts
实际幅值是20V,但是计算出来的值已经超过幅值

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 Author| Post time 2020-1-3 19:26:10 | Show all posts
绘制图形的截图

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 Author| Post time 2020-1-3 19:28:54 | Show all posts
这个波形实际幅值是10V

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 Author| Post time 2020-1-3 19:29:42 | Show all posts
wangshuang replied at 2019-12-24 16:58
您可以查看是否是零电平的问题,或者通过计算Vpp来验证。

麻烦您再帮我看看是什么问题导致的?
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