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I have a Fujitsu laptop running Windows ME with a DAQCard-AI-16XE-50 and an SC-2345. The data that is read in MAX or LabVIEW is not correct. The same DAQ card used in my old Compaq works fine. Could the problem be the laptop or the operating system?
To me it sounds like it could be the laptop. You could try to remove the battery from the laptop (use the wall outlet)and see if the readings get better. If you realize that it is the battery,
I would either not use the battery (just use the wall outlet) or try the system with a different battery to see if the second one does not affect the readings.