I am trying to sample pxi-6115 4 channels at 10M per chan.
The sample data goes ONLY to pc memory without user interface or writing to disk.
The sample mode is cont. sampling using callback every N events (base on the sample comes with daqmx)
When i am sampling 4 chans at 5M i can sample forever (more than 2 Min)
When i am sampling 3 chans at 10M i can sample forever (more than 2 Min)
When i sampling 4 channels the acq is stopped after 35 Msamples witout any error msg
i have tried playing with daqmx buffer size , the N samples to fire callback without ant luck
the system config is:
PXI-6115 , MXI-4
WinXp core 2 duo
Thanks for any help
Have you tried separating the thread between data acquisition and data logging? If they're in the same thread, the task will be too slow to clear all the data until it's overflow.
There is NO data logging only read the samples to local pc memory
I have tried to read raw data,bin16 data with the same results
I also tried to read the data in polling thread insted of CB , with the same results