What's the typical latency for software timed DIO on a USB-6211?

[CDancer]

My customer has a device incorporating a USB-6211. Software is written in Labview and does the following:

Write a "1" using DAQmx Write (digital bool 1line 1point).vi

Wait 1 ms

Write a "0" using DAQmx Write (digital bool 1line 1point).vi

DAQmx Stop Task.vi (to clear an already running task)

DAQmx Start Task.vi (to start a timed analog output)

I'd like to get some idea of the likely range of times between the start of the digital pulse and the start of the analog output.

The equipment is a long way away so I can't test it, and I don't have another USB card to hand.

It's running in Windows by the way.

[Dennis_Knutson]

What do you see when you simulate the DAQ device? Are you using the same pc and same os as your user? Jitter with software timing can vary widely and that 1ms wait is not at all accurate on Windows.

[CDancer]

Hi Dennis, No I hadn't simulated the DAQ. I wasn't aware that was possible. I'd be surprised if it emulates the USB latency accurately though.

It's mainly the USB latency I'm interested in, I know about Windows' vagueness wrt timing.