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I am using the DaqPad 6016 multifunction DAQ USB device. I am using the internal time base to configure the sample rate. No matter what sample rate I set the soonest I can acquire data from the device is about 50 milliseconds. For example if I set the sample rate to 1000 samples/second and I poll the device every 10 milliseconds it is only every 5 attempt that I get 50 samples. The other times that I poll the device I get 0 samples. I would like to poll the device every 10 milliseconds and get some data every time I poll. I don't want the device to hold on to the data for 50 msec before it gives me something. Is there some device attribute that I can set to make it do what I want?
Thanks, Jim Vander Werp Smiths Aerospace Grand Rapids, MI
The USB bus in general was not designed for low-latency applications. However, you should be able to improve latency by using the HW-timed single point timing mode. This mode was designed for real-time applications such as the one that you presumably are working on.
