Unable to acquire 4 channels (2048 samples to be read).PCI 7030/6040E

Question

I am using the PCI 7030/6040E DaQ card (Labview 6.1, Windows 2000,Pentium).I want to acquire 4 channel data (2048 samples from each channel)at 6.5kS/s Sampling Rate.When I do this using AI Acquire Waveforms.vi the program gets stuck.When I use continuous buffered acquisition using intermediate VIs, then data over write error occurs.(I am taking FFT of the data and plotting the data as four Waterfalls using Intensity Chart.).It says that you are not reading data from the buffer as fast and so overwriting occurs.How can I solve this problem.Can I get data at this rate using this card ?If so,what should be the buffer size etc? (I want continuous acquisition).

Answer 1

thanks.i am attaching the code,Buffered.vi and non_buffered_ni.vi.both does not work.the second one gets stuck and the first one gives some overwrite error.Actually what I want is the first one,buffered.vi,because I want continuous acquisition.the second one i have tried to see whether it will work.as i have told,i want a sampling rate of 6500 samples/sec and i want to take 2048 samples from each channel to take FFT and plot waterfall.hope this gives a clear picture.
Attachments:
Buffered.vi ‏183 KB
non_buffered_ni.vi ‏148 KB