Using the Laser Digitizer for Flatbed Scanning

To Set-Up The Program

1. Turn on computer.

2. Type ‘user’ for the password.

3. Type ‘scan’ at D: prompt.

4. Choose ‘Create Scan Window’ (Option 1).

To Home the Laser

1. Press CTRL-Y to set X/Y coordinates. (CTRL-R sets rotational coordinates.)

2. Press CTRL-U to change units to millimeters.

3. Press CTRL-H to begin homing process.

4. Type ‘XYZA’, and then press ENTER. This determines which axes will be homed.

5. Type ‘M’ to turns on the motors.

6. Type ‘X’ then type ‘-457.2’ and press ENTER to move the laser to the proper X coordinate.

7. Type ‘Y’ then type ‘-274.6736’ and press ENTER to move the laser to the proper Y coordinate.

8. Type ‘L’ to activates the Laser.

9. Press TAB then type ‘0’ for up direction, press ENTER, type ‘150’ for down direction, press ENTER.

10. Press TAB until L = 4.06146.

11. Press F8 and then type ’85.0443’ for the H coordinate.

To Focus the Laser

1. Press ‘L’ until the Laser is in VISIBLE mode.

2. Type ‘I’, type ‘1’, press ENTER, type ‘1’, press ENTER to set the increments.

3. Move the Laser with the arrow keys over to the first corner of the scan window.

4. Press ‘L’ until the Laser is in BAD mode.

5. Press TAB and move the laser DOWN (as in step 8 of To Home the Laser) until it no longer says BAD and L is equal to some number.

6. Press TAB until L = 4.06146.

To Set the Scan Window

1. Press F9 to begin the scan window procedure.

2. Press CTRL-S at the first corner of the scan window (press ENTER twice.)

3. Press ‘L’ until the Laser is in VISIBLE mode.

4. At first corner of scan window, press INSERT. Move to the other corners around the object to be scanned in a clockwise or counterclockwise manner and press INSERT at each corner.

5. After the fourth corner is made, press CTRL-HOME to return to the first position and then INSERT to close the window.

To Set the Parameters

1. Press ‘P’ until P = RASTER ALIGN in the upper right of the computer screen.

2. Press ‘T’ until T = PT-to-PT in the upper right underneath of P.

3. Press CTRL-D, type ‘90’, press ENTER to set the machine to scan at 90 degrees to the x-axis.

4. Press CTRL-Z to set the scan height (mm).

5. Press D to set the scan density.

6. Press N to name the scan window file.

To Scan the Object

1. Press F10 to return to the main menu

2. Type ‘2’ to begin the scan.

3. Highlight the desired window and parameters to scan (which was named in step 5 of To Set the Parameters) and type ‘D’.

4. Type in the file name to be saved and press ENTER.

To Save to a Floppy Disk

1. After the object is scanned, press F10 to return to the main menu. Type ‘4’ to quit to the DOS prompt.

2. The file of the scanned object will be in d: and will be called (from step 4 of To Scan the Object) filename.scn.

3. Insert a good floppy into the b: drive.

4. At the d:\ prompt type ‘copy d:\filename.scn b:’.