Usb 6008, how to calibrate two input signals to be equal ?

[veceeeee]

HI all, I am using NI USB 6008 and labview 8.5 evaluation, using daq assistant.

Q1) How to calibrate two input voltage signals to become equal?

Q2) i used the comparison function eg: not equal.  When the two inputs value get not equal, how to make an output of 0-5V to the output ?

If anyone need more info on it to help me, i can provide it.

[Dennis_Knutson · Accepted solution]

Not sure at all what you mean by "make an output of 0-5V to the output". Do you want to output the difference between the two inputs?

Also, two input signals will probably never be equal. It's just not something that exists in floating point numbers on a computer. You should subtract one from another and use the In Range and coerce function to determine if they are close enough.

[veceeeee]

OK thanks