03-18-2013 12:32 PM
Is is possible to create a differential sine wave on the output of the 6289? And how would I do this.
I created a differential DC signal by making AO0 positive 1V and AO1 negative 1V. Then measured the signal on a differential input ADC, which is my DUT.
Now I am trying to trim CMRR and wanr to use the DAQ6289 because I don't want to add another piece of equipment to the test plan.
Any ideas would be appreciated.
Solved! Go to Solution.
03-19-2013 03:56 PM
Could you please specify what you mean by differnetial AC output? One way to do this is to output an AC signal with a DC offset and measure it accross a constant that's the same as what the DC offset is. For example, have one output be an AC signal with an offset of +1VDC and have another which outputs a constant +1VDC. Is this what you are trying to accomplish?
Daniel G.
National Instruments
ni.com/support
03-20-2013 09:15 AM
This is now for my interest as I have found a work around.
BUT
What I was attempting to do is produce a sine wave @ 1V, 60Hz on pin AO0 and a sine wave 180 degrees out of phase on the AO1 pin.
Is that possible?
03-21-2013 10:08 AM
Please take a look at this example to see how to generate off phase sine waves:
http://zone.ni.com/devzone/cda/epd/p/id/5001
Have a great day!
Daniel G.
National Instruments