TABLET Command

Calibrates and configures the tablet; turns Tablet mode on and off

Tools menu: Tablet
Command line: tablet

Option (ON / OFF / CAL/ CFG): Enter an option


On

Turns on Tablet mode. Setting the TABMODE system variable to 1 also turns on Tablet mode. Pressing CTRL+T on some systems turns Tablet mode on and off.

Off

Turns off Tablet mode. Setting the TABMODE system variable to 0 also turns off Tablet mode. Pressing CTRL+T on some systems turns Tablet mode on and off.

Cal

Calibrates the digitizer with a paper drawing or photograph, creating the tablet transformation, which is the mapping of points from the tablet to the coordinate drawing system. Calibration is digitizing points on the drawing and mapping them to their real coordinates.

Calibration can be performed in model space or paper space. The CAL option turns on Tablet mode in the space in which the tablet is calibrated. When the space is changed, the CAL option turns off Tablet mode.

The paper should be flat (with no bumps or wrinkles), and securely fastened to the digitizing tablet. The paper can be oriented at any angle.

Digitize point 1: Digitize a point on the paper drawing
Enter coordinates point 1: Specify an X,Y coordinate at the digitized point
Digitize point 2: Digitize a point on the paper drawing
Enter coordinates point 2: Specify an X,Y coordinate at the digitized point
Digitize point 3 (or ENTER to end): Digitize a point on the tablet or press ENTER
Enter coordinates for point 3: Specify an X,Y coordinate in the drawing

The points entered cannot be duplicates. The points need not be the origin on either axis, and you can enter as many points as you like. The more points entered, the more accurate the drawing will be.

After calibrating the tablet, set the transformation to Orthogonal, Affine, or Projective.

If only two points are entered, AutoCAD LT LT automatically computes an orthogonal transformation. If it is successful, AutoCAD LT ends the command.

If three or more points are entered, AutoCAD LT computes the transformation in each of the three types to determine which best fits the calibration points. If more than four points are entered, computing the best-fitting projective transformation can take a long time. You can cancel the process by pressing ESC.

When the computations are complete, AutoCAD LT displays a table with the number of calibration points and a column for each transformation type. The following information is provided under each column.

The remaining entries in each column are blank unless the outcome of fit is Success.

Cfg

Designates or realigns the tablet menu areas or designates a portion of a large tablet as a screen pointing area.

Enter number of tablet menus desired (0-4) <current>: Enter a value or press ENTER

If tablet menus are in use and the same number of menus is selected, AutoCAD LT prompts:

Do you want to realign tablet menu areas? <:N>: Enter y or n or press ENTER
Digitize upper-left corner of menu area n: Digitize a point (1)
Digitize lower-left corner of menu area n: Digitize a point (2)
Digitize lower-right corner of menu area n: Digitize a point (3)

In the prompt, n is the menu number (1-4).

The printed menu form must be affixed to the tablet surface, and the requested points must be digitized. The set of three points must form a 90-degree angle. Tablet menu areas can be skewed at any angle.

Enter the number of columns for menu area n: Enter a positive value
Enter the number of rows for menu area n: Enter a positive value

After all interaction concerning tablet menus is complete, AutoCAD LT displays the following prompt:

Do you want to respecify the screen pointing area? <N>: Enter y or n or press ENTER

If you enter y, AutoCAD LT displays the following prompt:.

Digitize lower-left corner of the pointing area: Digitize a point
Digitize upper-right corner of the pointing area: Digitize a point

A small portion of the tablet's surface is designated as the Fixed Screen Pointing area. AutoCAD LT displays the following prompts:

Do you want to specify the Floating Screen Pointing area? <N>: Enter y or n or press ENTER

If you responded y to the previous prompt, respond to the following prompt.

Do you want the Floating Screen Area to be the same size as the Fixed Screen Pointing Area? <Y>: Enter y or n or press ENTER

If you responded n to the previous prompt, respond to the following prompts.

Digitize lower-left corner of the Floating Screen pointing area: Digitize a point
Digitize upper-right corner of the Floating Screen pointing area: Digitize a point

Respond to the following prompt.

The F12 key will toggle the Floating Screen Area ON and OFF. Would you also like to specify a button to toggle the Floating Screen Area? <N>: Enter y or n or press ENTER

If you responded y to the previous prompt, respond to the following prompt.

Press any non-pick button on the digitizer puck that you wish to designate as the toggle for the Floating Screen Area.

Related Commands: REINIT reinitializes the digitizer.
System Variables: TABMODE turns Tablet mode on and off.