Hi JoelGR,
The USB-6008 has a minimum analog input range of +/-1V. Since the analog input resolution of the USB-6008 is 12 bits, the minimum code width is 488 microvolts (2V/2^12). This means that you cannot accurately acquire a signal below 488 microvolts. If you are looking for devices with better resolution, you may want to consider some
M-series devices or an
NI-DMM.
Best Regards
Hani R.
Applications Engineer
National Instruments