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DAQ USB 6009 slow

Hi everyone

 

I'm measuring the charge and discharge of a capacitor using the DAQ USB6009.

But the graph and data stored start to get slow a
fter a few hours

 

Do you know why?

 

 

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Why?

 

Because you seem to create ever growing arrays?

Because you seem to open and close files in each iteration?

 

Do you really think you need to convert a waveform into a string array to get a minimum value?

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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I need to collect the tensions per second, and saves them in real time, and then generate a table.

I realized that after 2000 seconds a instability in measurements, it begins and become slow.

Question: How do I set up DAQ so I get a smaller number of sample per second?

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@Saille wrote:


Question: How do I set up DAQ so I get a smaller number of sample per second?


In the DAQmx Timing function specify the sample rate.

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