An old but important issue in collecting RT is the refresh rate of the input device. I have heard that the typical USB keyboard refresh rate is about 125 Hz. This means by using a standard keyboard you have some time jitter of up to 8 ms. The refresh rate might even more importantly depend on the driver so that you don't even know the exact jitter.<br><br>Of course there are more sophisticated input devices such as the E-Prime button box. However, they are expensive and not very user friendly (unergonomic, heavy, buttons are hard to press). Taken these shortcomings I am wondering if you are aware of any more "standard" input devices that typically have better refresh rates. I guess for my purposes a refresh rate of 250 Hz would be sufficient.<br><br>What about Game controllers such as the Microsoft Sidewinder etc.? Do they typically have better refresh rates?<br><br>Any hints are most appreciated.<br><br>Tobias<br>
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