Per

I am using the USB-1808X and it is performing well but I still have some Noise on the analog input signals and I would like to know more about how the "GND" and "AGND" are connected internally. Does the negative side of the 5 volt provided by the USB cable carry over to the signal side? I also suspect that my computer contributes some noise via the shield on the USB power cable, is it possible to use clamps on ferrites to reduce this contribution? Best from Per Ohlin CEO, ADEC Automation AB Vice President, BATIXT AB