Which card can I use?

I am using PCI 6110, and I want to do some control work. I tried to call the driver in NI-DAQ, but it is still too slow. NI doesn't support register level programing for 6110.
Can anyone recommend one daq card (which I can write register level driver) for me? I need 1Mhz~2MHz sampling rate.
Thanks

StephenZhou wrote in news:506500000005000000FBB70000-
[email protected]:
> Hi, gbush
>
> Thanks for your reply. I am sorry that I didn't describe this problem
> clearly.
>
> I have a 500Hz signal, and I use 1MHz sampling rate. I will get 2000
> data points every 2 ms. I can achieve this using pci 6110.
>
> The question is that the time I transfer these 2000 data points using
> 6110 is too long. Perhaps I can increase this speed by writing
> register level driver. NI doesn't provide any manual for 6110. I
> wonder if there is another card which has such manual, and also can
> satisfy my requirement (1MHz sampling rate).
>
> Any suggestions?
> Many thanks
>
Does it do you any good to sample at a Meg if your signal
is 500 Hz. You
can very comfortably sample at 10KHz with no loss. You would then be
transfering 20 points, as opposed to 2000.
Although, its hard to believe that a simple memory transfer is what's
holding you up. 500Hz control problems are simply not Labview's forte.
LabviewRT could do this with no problem, but that would require hardware
changes. I think you'd be better off doing the register-level
programming. NI does provide a manual for the 6110, at
http://www.ni.com/pdf/manuals/321759d.pdf, but it doesn't have the
register info you need. Perhaps the tech support can get this info to
you.
Data Translation cards (at least as of about 10 years ago, when I stopped
using them) provide this information, and some very good examples.
Scott
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