Hello JL3,
The NI-4461 does not support the Use Only Onboard Memory Property that is used in this example program. The documentation for the example that says it is was reported to R&D (#4IJAAA3B) for further investigation. A workaround for this is to use another example program such as the basic Cont Gen Voltage Wfm-Int Clk.vi, which will use a RAM buffer as well as the onboard buffer, but does a very similar output.
Thanks for the feedback! Please post back if you have any questions.
Neal M.
Applications Engineering National Instruments www.ni.com/support