Detect 2 ms changes on USB-6509

[JockeR]

Is it possible to use the USB-6509 to detect and read digital changes for 50+ channels. And the changes could be as small as only 2 milliseconds wide?

My first idea was to use the Change Detection feature of the 6509 to trigger a read DIO-event.

The data read could then be used to indicate which IO-port changed.

An alternate solution could be to poll the DIO continuously and detect the changes through software.

Although this would require a lot more processing. What data rates would be possible over USB?

Is this even possible over the USB-interface or do I need a faster interface, like the PCI?

Thanks,

JR

[crossrulz]

You need to use a high speed DIO card or go with an FPGA card.  Personally, I would use the PCI-7813R.  It does require LabVIEW FPGA to program though.

[JockeR]

Thanks for your input!

I'll look into this.