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Unread 30-01-2010, 23:26
Greg McKaskle Greg McKaskle is offline
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Re: How Precise and Accurate is the Analog In on the Crio?

The 9201 is +- ten volts and 12 bits, meaning that it is 20 volts range over 4096 intervals, or about 5 millivolts for each interval. Noise in the power supply or wiring will likely reduce this by a bit or two. The next thing to do is to measure a fixed signal to see how much noise is picked up.

If you know what your minimum needs are that may help, also if the noise you pick up is random, you can average to quieten it and gain some effective resolution back.

Greg McKaskle
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