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Multi channel data acquisition using PXIe-6368

Hello all

 

We are required to acquire simultaneously 110 channel analog data on high sampling rate i.e. 2 M samples/s/channel.For this purpose, 07 PXIe-6368 DAQ cards are chosen and now we are trying to write software (using 07 simulated PXIe-6368 Devices in NI DAQmx) to acquire 110 channel data for 0.6 sec (finite sample mode).

 

The problem we are facing is of "out of memory error". We have tried to acquire these channels in NI DAQmx (using create task), signal express as well as using C++ APIs on core i7 (8 GB RAM) PC but problem is same. 

 

Can any one kindly propose a solution how to encounter this problem.

Thanks

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Although I have not used this card, it sounds like a common issue.  You probably need to set up smaller buffer sizes and take advantage of the high throughput capabilities of the PXIe cards.  If you try to sample all of the data at once across all those inputs without slicing it up for transfer before filling the buffers, I can see getting that error.

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