Separating Waveforms Using the DAQ Assistant Express VI

[ohmy_physics]

I am reading voltage signals into my LabVIEW application using the DAQ Assistant Express VI.  I would like to compare two of the voltage signals that I am reading in (with mathematical operations), but I can't separate the two signals once they have been read into the DAQ Assistant.  I also am unable to run two instances of the DAQ Assistant, which would give me access to the two waveforms separately.  Is there a way to separate the two waveforms after they are read into the DAQ Assistant (they are output from the DAQ Assistant as one signal right now, though they are displayed as two separate waveforms on the graph) or read in from two different physical channels to two separate DAQ Assistant VI's?

Thanks.

[devchander]

Hi,

Its would be simpler and more effecient if you start using AI Program(DAQ mx).

Just start of by choosing from example VI's and modifying it to suit your pupose.

in the VI attached, i have indexed out the data from first two channels in the scan list and displayed them on seperate graphs.

I advise you to go ahead using this VI or any of AI example Vi's provided along with labview for your applications.

hope this helps

regards

Dev

[Laura F.]

Hello,

I do agree with Dev about using the DAQmx API, however, if you need a quick fix for your DAQ Assistant you can use the split signals function on the Signal Manipulation palette to split your two waveforms. 

Thanks,

Laura