User`s guide

TouchWare for Windows NT User's Guide62
Adjusting the Sample Rate
The Sample Rate option specifies the maximum number of X and Y
touch coordinates posted into Windows NT per 55ms time period.
The system uses the touch coordinates to locate your pen or finger
touch on the screen. This helps to produce more accurate results with
some touch applications, such as drawing. To achieve smoother
drawings, increase the Sample Rate setting.
To reduce the touchscreen system overhead, decrease the Sample Rate
setting. If you are seeing a lot of screen redrawing when you drag a
large object, if an object is not moving smoothly when you drag it, or
if the system is running very slowly, you may want to reduce the
Sample Rate.
The Sample Rate ranges from a low of 1, which allows approximately
18 X, Y touch coordinates to be posted per second to a high of 14,
which allows about 254 X, Y touch coordinates to be posted per
second. The default value is 3, which allows up to about 55 X, Y
touch coordinates to be posted per second.
This setting takes effect when you click Apply or OK.
Filtering Touchdown X, Y Coordinates
The Touchdown Filter option specifies the number of X, Y touch
coordinates that the touchscreen driver ignores before sensing a
touchdown. This can be useful in touchdown mode, where the
touchdown position is the position of the button click. If the
touchscreen takes a few touch coordinates to stabilize on the correct
position, you can adjust this setting so that the first few inaccurate
touch coordinates are ignored.
If your touch is acknowledged on a position that is slightly off of the
actual touch position (and the touchscreen is accurately calibrated),
increase the Touchdown Filter setting.