Current Help System: PC-DMIS Laser (View Core Help)

#### To Create a Patch Scan

1. Ensure that you have a Laser probe enabled.

2. Place PC-DMIS into DCC mode.

3. Select the
   Insert | Scan | Patch menu item. The Scan dialog box appears with Patch Scan already selected from the Scan Type list.

4. Set the values for Increment and Increment 2. These determine the spacing of the points if you select the Generate or Spline buttons, or the New Line check box to define the scan. Increment defines the spacing between each point on a scan line and Increment 2 defines the spacing between scan lines.

5. If your scan traverses multiple surfaces, consider selecting surfaces as discussed in the “CAD Controls” topic.

6. If you are going to use the boundary points to help define the scan path add the 1 point (starting point), the D point (the direction to begin scanning), the 2 point (the end point of the first line), the 3 point (to generate a minimum area), and, if desired, the 4 point (to form a square or rectangular area). This will select an area that you wish to scan. Pick these points by following an appropriate procedure as discussed in "Boundary Points”.

7. Make any needed changes to the vectors in the Vectors list. Do this by double-clicking on the vector, and making any changes to the Edit Scan Item dialog box, and then clicking OK to return to the Scan dialog box.

8. Type the name of the scan in the ID box.

9. Set the Measure check box if you want to execute the scan and measure it at creation time.

10. Select the Generate button to generate a preview of the scan on the CAD model in the Graphics Display window. When you generate the scan, PC-DMIS will start the scan at the start point, and will follow the chosen direction until it reaches the boundary point, the scan then moves back and forth scanning in rows along the chosen area, scanning in rows at the specified increment value until it finishes the process.

11. If needed, you can delete individual points by selecting them one at a time from the Theoretical Path area and pressing the DELETE key.

12. If needed, make additional modification to your scan.

13. Enter the ID of the cloud of points object that will receive the surface data in the Point Cloud Reference Feature edit box.

14. Click the Create button. PC-DMIS inserts the scan into the Edit window.