I am trying to perform continuous output sampling using the NI-DAQ device PCI-6289 (named "Dev1"; output 'ao3') in Measurement & Automation Explorer 5.5 installed together with the device driver package NI-DAQmx 9.8. I am doing this using an Analog Output (Voltage) task set up within MAX. The sampling rate is set to its maximal value of 1 MHz, and I am using only a few samples (see the attached snapshot). Triggering and Advanced Timing is not changed, so the default configuration is used. The problem is now that the Samples to Write (12 in the snapshot) are output once only rather than repeatedly due to the selected Generation Mode 'Continuous Samples', but no error message appears. When I increase the Samples to Write to 16, continuous output is generated.
When I try the same in LabVIEW (2013) using DAQmx VIs, I receive the error -200018 ("DAC conversion attempted before data to be converted was available."). Therefore, the behaviour of MAX appears like a bug to me, it seems that errors reported by the DAQmx driver may be ignored.