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how to increase data acquisition speed ?

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the graph with data is nothing unique, you see a straight line at the voltage value that the photodiode reads.

 

how can i change the dynamic data, and to what shoould i change it?

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You get rid of the dynamic data type by getting rid of the express VIs. If you use the DAQmx VIs directly you can select either an array of double-precision floats or a waveform. 

 

What is the dynamic range of the signal that you are trying to measure? If your DAQ is set to +- 10 and the signal is only 0 to .25V, it would probably be indiscernible.

 

Mike...


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