@Terka wrote:
HI,
I want to measure voltage in range of few mV (by NI Elvis II), but measure by my DAQ assistant looks very inaccuracy, voltage is changing in hundred of microV. I need accuracy like default NI Elvis oscilloscope, which is changing in tens of microV. I tried ti use RMS value, but this didnt work so much. Do you have some idea how can I do it?
Thanks for Your help.
I'm thinking that this is a variation on a theme that occurs with regularity with people unused to taking measurements automatically. That is, displayed values are usually formatted or otherwise coerced for human consumption, but measurements obtained automatically are often raw. You might have to process it with your code to get it to align with your observed results (but I don't believe RMS is the way to go - that's something entirely different than what you are attempting to do).
Bill
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