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PC-DMIS will take hits at the set increment along the current part's coordinate system. The approach of the probe is perpendicular to the indicated axis. The probe will stay on the cut plane. The approach vector will be normal to the selected axis and on the cut plane. This technique uses the same approach for taking each hit (unlike the previous technique which adjusts the approach to be perpendicular to the line between the previous two hits). Only DCC scans should use this filter.

When this filter is applied to Manual scans, the following behaviour happens:

This Filter property allows you to scan a part by specifying a cut plane on a certain part axis and dragging the probe across the cut plane. As you scan the part, you should scan so that the probe crisscrosses the defined Cut Plane as many times as desired. PC-DMIS then follows this procedure:

• PC-DMIS gets data from the controller and finds the two data hits that are closest to the Cut Plane on either side as you crisscross.
• PC-DMIS then forms a line between the two hits which will pierce the Cut Plane.
• The pierced point then becomes a hit on the Cut Plane.

This operation happens every time you cross the Cut Plane and you will finally have many hits that are on the Cut Plane.

This technique allows you to set specific maximum and minimum angle and increment values that will be used in determining where PC-DMIS will take a hit. The probe's approach is perpendicular to the line between the last two measured hits. You should provide the maximum and minimum values that will be used to determine the increments between hits. You also must enter the desired values for the maximum and minimum angles. PC-DMIS will take three hits using the minimum increment. It will then measure the angle between hit's 1-2 and 2-3.

• If the measured angle is between the maximum and minimum values defined, PC-DMIS will continue to take hits at the current increment.
• If the angle is greater than the maximum value, PC-DMIS will erase the last hit and measure it again using one quarter of the current increment value.
• If the angle is less than the minimum increment, PC-DMIS will take the hit at the minimum increment value.

PC-DMIS will again measure the angle between the newest hit and the two previous hits. It will continue to erase the last hit and drop the increment value to one quarter of the increment until the measured angle is within the range defined, or the minimum value of the increment is reached.

If the measured angle is less than the minimum angle, PC-DMIS will double the increment for the next hit. (If this is greater than the maximum increment value it will take the hit at the maximum increment.) PC-DMIS will again measure the angle between the newest hit and the two previous hits. It will continue to double the increment value until the measured angle is within the range defined, or the maximum increment is reached. The above behavior applies to DCC scans.

When this filter is applied to Manual scans, the following behaviour occurs:

The filter defines the distance between hits based on the part. PC-DMIS allows you to specify the speed at which it will read hits and the drop point distance. After the scanning process is complete, PC-DMIS will calculate the total number of hits that were measured and the total number that were kept after completing the drop point distance calculations. The reduced data is then converted to hits.

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