I'm communicating with a USB-6251 and USB-6221. The 6251 reads a continuous stream of data from a light detector. Sometimes the program needs to move from 1Hz processing to 10Hz processing, and so the sampling increases 10 fold as well. When we do this, sometimes the program crashes with a memory underflow error. What's odd is that this problem doesn't occur on our older computer model, but does on the newer one. The newer one has a similar CPU but is running Windows 10. In most aspects, the computer runs much more smoothly, but for some reason we keep getting this underflow error that never used to occur.

Multifunction DAQ

USB 6251 memory underflow error 88709

Author

Thank you so much for your help! I will see about using that to debug and will reply with results later.

Message 11 of 12

(726 Views)

Author

Just came back to give an update on this problem, as it was fixed.

Another task the program does is periodically output a certain measurement to an analog output to be analyzed externally. This feature is pretty much never used anymore, but the program still does it. Setting the DAC Output to "False" in the program settings solved this problem. No more underflow for the analog output, everything works great now! Thanks for all your help!

Message 12 of 12

(436 Views)

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