using C#, AnalogWaveform , .GetRawData() vs .Samples

[chicago_joe]

Hi -  simple question:

suppose i have some acquired data in the form AnalogWaveform<double>[] , 

and i want to write it to disk (without wasting time, as i'm working on real-time continuous acquisition)

what is the difference between AnalogWaveform.Samples   and AnalogWaveform.GetRawData()   ?  what are the advantages/disadvantages? 

thanks!

[CWolf · Accepted solution]

Chicago_Joe,

The raw data is the data before scaling has been applied, whereas the samples will already have been converted to actual voltages.  Thus, for datalogging purposes, it is probably more useful to save the samples.  However, it is possible to manually convert the raw data to voltages.  Here is an example program (in LabVIEW and C++, but the same thing could be done in C#) that takes raw data and converts it.  Also, if you want to know more about the raw data, here is a KnowledgeBase article that talks about it.  It specifically refers to DAQmx functions in LabVIEW, but the same thing applies when using DAQmx with C#. 

-Christina

[chicago_joe]

thanks very much!