Streaming data from disk to analog output (using the PCI-6713)

[josh ayers]

I have a question about the PCI-6713. I want to stream data from the hard disk to all of the card's 8 outputs at its maximum update rate of 1 MS/s. Using single precision (32-bit) variables, this works out to a 32 MB/s transfer rate. That seems to be pushing the limits of most hard disks.

However, the output card only has 12-bit resolution. Is there a way - using LabView or some other software - to store the data on the disk using only 12-bit numbers? This would drastically decrease the transfer rate required.

Thanks for your help.

[RIO-Todd]

You could use 8 or 16 bit integers in LabVIEW rather than using 32-bit single precision numbers. I'm sure integers don't have the precision you're wanting though. That is the only way to reduce the size of the numbers you are writing. I am fairly positive there is no way in LabVIEW to do what you are wanting.

Regards,

Todd D.