Writing USB DAQ: Reading the data, analyze, analyzed data - does not
I have Labview 2011 32 bits (without tools), on Windows 7.
Material: Enclosure OR USB - 6251 DAQ board. I use analog analog out.
I'm trying to collect data (reading), analyze (like part or derivative) to a new waveform (or a data table)., then convert them this new waveform. As in this example:
http://zone.NI.com/reference/en-XX/help/370466V-01/mxcncpts/hwtimedsimio/
However, I don't have hardware timing.
I tried a lot of things. Those who work temporarily, until the start to write task threw an error: http://i.imgur.com/as5ItdO.png
Another who work temporarily, but it has a 7 second delay: http://i.imgur.com/VLbyZbo.png
Ends up having this error: Warning 200015 occurred
When writing to the buffer during a regeneration, the actual data generated may have alternated between the old and new data. In other words, while the pilot was replacing the old model of the buffer with the new model, the device could have generated some new data, while a part of the old data and then a part of the new data again.
Reduce the sampling frequency, use a larger buffer or refer to the documentation on DAQmx write me for more information on other ways to avoid this warning.
Can someone tell me what I'm missing? It seems very simple.
Thank you.
Thank you for an update. Sorry I missed you use hardware USB DAQ and this is the reason why we see this error
http://digital.NI.com/public.nsf/allkb/EC1968728E660B288625780700570D06?OpenDocument
In general, when you receive errors like that they give you a pretty good idea on what is going on. Therefore, you can try to remove your task AO timming daqmx or try to set the size of the buffer.
This might help
http://digital.NI.com/public.nsf/allkb/E1E67695E76BA75B86256DB1004E9B07
Tags: NI Hardware
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