Recording of data at low speed

Hello

I am acquiring data through data acquisition. The sampling frequency is 20 k and sample read is 2 k. These parameters satisfies my needs. But the data I save are enormous, because I intend to acquire for hours. Therefore, I would be grateful if somone could tell me how to save data to low flow that is without changing the "sampling rate" or "sample to read." In addition, if I could set the frequency of data backup whenever I have start the aqusition.

Thanks in advance for the help.

Which makes it look like your data like, is it rapidly fluctuating or is relatively stable with occasional outliers or? I'm asking because the answer may vary in function resembles what data. Simply "decimation" (each sample X gain) may operate for some data, but then you may miss something 'important' Moreover, if the data is relatively constant, with occasional outliers, then by recording a sample every time that data moves to a set point (the new sample is X amount larger or smaller than the last 'set point') and then by setting new value to this value may work for other types.

Tags: NI Software

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