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

#### Measuring a Characteristic Point with NC-100

PC-DMIS allows several methods for measuring a Characteristic Point using the Auto Feature option. They are listed in the following paragraphs as:

Using Keyed in Data

This method allows you to key in the desired X, Y, Z, I, J, K values for the Characteristic Point.

Using Surface Data on the Screen

To generate a Characteristic Point using surface data:

1. Click the Surface Mode button .

2. Using the animated probe , touch once near (but not on) the angled edge. PC-DMIS will highlight the selected surface.

3. Verify that the correct surface has been selected.

The dialog box will display the value of the selected Characteristic Point and vector once the point has been indicated. The direction of the surface normal vector is determined by the side of the part that is accessible to the probe. If both sides of the part are equally accessible, the normal from the CAD data is used. The Flip Vector button lets you change the direction of the approach.

If additional mouse clicks are detected before you click the Create button, PC-DMIS will overwrite the previously displayed information with the new data.

Note: If an additional touch is necessary, click on the opposite surface of the angled edge.

Using Wire frame Data on the Screen

Wire frame CAD data also can be used to generate a Characteristic Point.

To generate the point:

1. Using the animated probe , touch once near (but not on) the angled edge. PC-DMIS will highlight the selected surface.

2. Verify that the correct surface has been selected.

The Characteristic Pts auto feature type of the Auto Features dialog box will display the value of the selected Characteristic Point and vector once the point has been indicated. The direction of the surface normal vector is determined by the side of the part that is accessible to the probe. If both sides of the part are equally accessible, the normal vector from the CAD data is used. The Flip Vector button lets you change the direction of the approach.

- Any additional mouse clicks, prior to clicking the Create button, will overwrite the previously displayed information with the new data.

- If an additional touch is necessary, click on the opposite surface of the angled edge.

Note: The mouse cannot be used in the Graphics Display window if CAD data is unavailable.