I am using NI USB-6341 to measure the voltage, I used the sample VI ( please see the attached file) one thinng I check the result by the signal from power supply, unfortunetly they are not the same, Does any one know what is the problem? . how can I write a simple program to measure voltage? and what teminology I need to learn to become more familar with measuring
The first thing to realize is that you posted to the wrong board. Measure is an old NI product - an Excel add-on.Post to the Multifunction DAQ board.
In you code, you are not setting the infput configuration - i.e. differential, single-ended, etc. Provide details on your connections from the power supply to the DAQ device and look at the recomended connections in the manual. You also need to provide details on what you mean by 'they are not the same'. Is the difference volts, millivolts, or what?