Smart Puck Filter

You can control the Smart Puck Filter by selecting Advanced or Smart Puck Filter from the Bentley Tablet Driver dialog. The Bentley Tablet Driver dialog provides a way to change the five entries in the WINTAB32.INI that control the Smart Puck Filter's behavior.

NoMotionXFilter

NoMotionYFilter — The distance that the puck must move to switch the driver from filtered mode to normal mode. While in filtered mode, any puck movement within the area defined by these settings is ignored. These numbers represent a distance in the X and Y coordinates and are valued in digitizer resolution units. Digitizer resolutions expected by this driver are 200, 500, or 1000 units per inch.

The following list of digitizers report in 200 units per inch:

GTCO MD-7
Summagraphics Bit Pad Series

The following list of digitizers report in 500 units per inch:

Altek AC30 (Alternate ROM)
Altek AC30 (Standard ROM)
GTCO Ultima and SketchMaster
Summagraphics MicroGrid and Summagrid Tablets
Summagraphics MM 1812 (MM Format) & FX Series
Summagraphics MM 1812 (UIOF Format)
Summagraphics SummaSketch series with 12 or 16 button puck
Summagraphics SummaSketch II and III Professional Plus series

The following list of digitizers report in 1000 units per inch:

Altek AC40 Controller
Calcomp DrawingBoards & 9000, 9100 Series
GTCO Digipad Series and Roll-Up Series
Intergraph Menu Tablet
Intergraph Menu Tablet 1813 & XLC Series
Kurta Series TWO, IS/ONE, ADB and XGT Series
Numonics 2200 Series
Scriptel SPD or SPC Series
Summagraphics MM 1201 and Compatibles

Note: If you have a 1000 units per inch digitizer and you want the mode switch to occur when you move the puck 1/2 inch in any direction, set both NoMotionXFilter and NoMotionYFilter to 500.

NoMotionTimerFilter — The minimum time that must pass before filtered mode is entered. This time is in milliseconds. Therefore a five-second delay will be entered as 5000.

NoMotionIconChange

NoMotionTitleChange — These variables control the effects on the driver's icon when a mode switch occurs. Normally, the driver's icon will switch from blue to red to indicate filtered mode. Setting NoMotionIconChange=0 disables this notification. Setting NoMotionTitleChange=0 disables the title change of the icon. Normally the default behavior is desired and these variables are not set in the WINTAB32.INI file.

Example modification: You should issue the command notepad %windir%\wintab32.ini to modify the file. Suppose that your existing WINTAB32.INI file consists of the following:

[Config]
window=1
tablet=DP5
[DP5]
cursor=16
arrangement=0
width=17
height=11
[COM Port]
PORT=2

To enable a one-inch filter zone that activates no sooner then three seconds after the puck stops moving, add the following:

[Config]
window=1
tablet=DP5
[DP5]
NoMotionXFilter=500
NoMotionYFilter=500
NoMotionTimerFilter=3000 
cursor=16
arrangement=0
width=17
height=11
[COM Port]
PORT=2

To enable a 0.05 inch filter zone to remove puck jitter, add the following:

[Config]
window=1
tablet=DP5
[DP5]
NoMotionXFilter=5
NoMotionYFilter=5
NoMotionTimerFilter=3
cursor=16
arrangement=0
width=17
height=11
[COM Port]
PORT=2