USB-6501 >>> Fastest Clock ?!?

[Gert.vi]

Hello,
I just buy a USB-6501 Digital I/O device
I want to try out the speed of this device, but at the moment I have very slow results (4ms/bit).
How can I have more speed (less than 1ms/bit)???
Examples???

Thanks,
Gert

[JorisV]

Hi Gert,

I'm afraid that this USB module is software-timed. So, you have to make software calls to your static I/O from within your loop in LV on Windows. This basically means that every time you have to go trough the driver layer which is time-consuming. So putting a DaqmxBase function, that writes to a port/line, in a loop running at full processor speed will be the maximum speed.

This DIO cannot be hardware-timed. We have other cards for this.

Regards.

Joris V

[Gert.vi]

And is it possible to write data to a buffer and send it after a time with this device ???