Hi vothat,
Thanks for posting on the NI discussion forums! While there is not a way to perform a Self Test of your device in LabVIEW or CVI, we recommend using the DAQmx Reset Device function. It provides for roughly the same, and slightly more extensive, functionality as the Self Test in MAX.
http://digital.ni.com/public.nsf/allkb/4927D77E27D907CF8625741F006C987B?OpenDocument
This KnowledgeBase solution is for LabVIEW, but it still applies for CVI. You can find the appropriate function in the DAQmx C Reference Help.
NI-DAQmx C Functions»Device Control»DAQmxResetDevice
