my DAQ card is PCI-6023E. i used AI input to analysis differential signal, but the input base line is -10V, so the signal can not displayed in my computer, how can i change the base line to 0v, so i can display my -5~+5V signal??
When using the PCI-6023, you can read signals in between the range of +/-10V.
I'm not very sure what you mean by saying "input base line". But as long as the signals you read are in between this range, we shouldn't have any problems.