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I have a problem I was hoping you might be able to help me figure out. I need to be able to create 6 analog output channels that will have separate data files loaded into them. These channels will be started individually in a timed sequence. I am having trouble getting the analog DAQ tasks created. LabVIEW is complaining when I try to set them up as individual tasks in the same routine. I used a for loop on an array of data files and an array of channel names. The error code is suggesting that I set the channels up under one task. But the problem with that is that I don’t know how to get individual channels of that one task started. I created the initial for loop in Main.vi. This gives me error -50103. My single instance is in Main_1.vi. I am trying to use a PXI-6363 card initially because that is all I have now. But I will try to upgrade to a PXI-6733 when I get ready for the test. Is there something with the 6363 that doesn't allow for multiple tasks on the same card for the same function? Thanks for your help. Joe Main.vi Main_1.vi