could someone enlighten me on what is the minimum voltage that can be read by pci 6024e daq card? I read in the manual that the range is +-0.05 to +-10V, with sensitivity at 0.008mV and 12bits input resolution. Does this mean that the minimum voltage is 0.05V?
Hi, thanks for the reply. I am sorry but I meant what is the closer voltage to zero that I can read reliably. If I understand well from the data sheet I can set the range to -0.5 to 0.5, with sensitive of 8muV and 0.106mV absolute accuracy. I am a bit confused as I don't know how to interpred the absolute accuracy...
Have a look at the note which is under the table in your document :
The Absolute Accuracy at Full Scale calculations were performed for a maximum range input voltage (for example, 10 V for
the ±10 V range) after one year, assuming 100 points of averaged data.
What I understand is that accuracy will be around 0,106mV after 1 year (for a 0,05V input signal). But it's not very clear even for me ! Can anyone explain that ? What's the difference between that and resolution (resolution = range/(2^nbits - 1) but what about accuracy)
yes I had a look at the note... Hmmm, it is still a bit confusing to me... Let's leave aside the environmental conditions and time for a moment... and let's say for the range of -0.5 to +0.5, the sensitivity is 0.008mV but the accuracy is 0.106mV. I assume that this is the standard error. So if the accuracy is 0.106mV, then I think that working in ranges smaller than this would be complete nonsense. Am I right?