Is there an example hsdio dma PXI-6561?

[Jeff_Giacone]

Is there a Labview example for capturing data to a file using the HSDIO the Direct DMA instance of
the niHSDIO Fetch Waveform VI

PXI-6561 card

The strobe clock rate is 40MHz

Continuous data to files is needed

[Kaitlin-N]

Hi Isutiger,

Here is an article that contains an example that should be pretty close to what you are looking for.

NI-HSDIO Stream to Disk (Acquisition) Using Win32 File IO:

http://zone.ni.com/devzone/cda/epd/p/id/5271

Regards,

[Jeff_Giacone]

That is the example that I started with. I does not support a external clock rate of 40Mhz with the PXi chassis,PXI-6561 card and computer that I have. The memory in the card overflows and the application stops.

I changed the data type to U16 to match the PXi cardt

I played with external clock rate and the streaming could keep up with an external clock rate of 37MHz which is a little slower than what I need.

Thus I was looking for how to use the DMA VI...it has an input of Address, but don't know what that is?

[Kaitlin-N]

Hi Isutiger,

Can you please send me a screenshot of the error you are seeing.

Also, can you please tell me the exact name of the DMA VI you are looking into?

Thank you,

[Jeff_Giacone]

I am not near my PXi chassis So I'll have to send yuo a screen shot on my next posting

C:\Program Files (x86)\National Instruments\LabVIEW 2012\instr.lib\niHSDIO\niHSDIO.llb\niHSDIO Fetch Waveform (Direct DMA).vi