DAQPad-6015(BNC): Onboard Device memory overflow

[cpp_programer]

In my "DAQmx Ansi C" application, I started a task of continuous analog capturing. The task seems to work correctly. But tens of seconds later, the task stops bucause of the error(-200010) . It was the first time for me to see this error.

Other devices works correctly in my application, but this DAQPad-6015 doesn't. Are there any tips for using this device? or Is the amount of the FIFO in this device is less than that of other devices?

[M.Sato]

Hi,

Thank you for using the NI products.
I have a question about this problem before answer.
What is the number of rate and samples per channel to acquire when the error occurs with DAQPad-6015?

Error"-2000010" explains that the hardware FIFO is not able to empty fast enough to keep up with the acquisition.

I think this error occurred because the transfer rate of the USB device has not caught up.
Could you try to change the rate, please?

I hope this help.

PS.Now, NI Discussion forum in Japan is available. If you prefer Japanese, you can post to the forum of the following link.

http://forums.ni.com/ni/board?board.id=1170

Sincerely yours,
Masayuki Sato
Applications Engineer
National Instruments Japan Corporation

[cpp_programer]

Thank you for answering.

The rate is 200kHz x 1ch and continous capturing. I tried 100kHz x 1ch, but the same error occured.

Does "the transfer rate of the USB device has not caught up" mean this error depends of PC spec? How do I manege to use this device at maximum rate? Is there any tips or conditions?

I attached a simple sample command line app I tryed to check.

[M.Sato]

Hi,

I checked sample code that you attached. The Samples Per Channel is set to 400000.
Could you change samplesPerChan from 400000 to 1000 and try again?

Best regards,
Masayuki Sato
Applications Engineer
National Instruments Japan Corporation

[cpp_programer]

I tried to change the value.
But the same error occured. The situation seems no change.
ummm....