Criteria for an Acceptable Stripe:

- The probe must not be against the hardstop of the arm.

- The stripe must be comprised of more than 100 points.

- In the Laser View, the laser's red arc must be inside the green rectangular area that bounds the yellow arc.

- The solved circle which is created by the laser's arc must have at least 100 degrees of arc angle, the difference between the starting vector and the ending vector of the arc.

- The laser must probe a diameter of .875 multiplied by the theoretical diameter of the calibration sphere. This means it should probe between 81.9% and 96.6% of the theoretical diameter.

- The probe must remain motionless. It should not move more than 1.5 mm over the last 5 probings.

Graphical Depiction of the Different Probing Locations

- 5 Positions around the sphere:

Position 1: The laser stripe should be horizontal along the side of the sphere as in the image below.

Position 2: Rotate the sensor 120 degrees around the sphere from Position 1.

Position 3: Rotate the sensor 120 degrees around the sphere from Position 2.

Position 4: Point the sensor straight down on the top of the sphere.

Position 5: Point the sensor straight down on the top of the sphere with the laser stripe located 90 degrees from Position 4.

- 3 Sensor Fields (Far, Right, and Left) within the laser's range:

Field 1: Far | Field 2: Right | Field 3: Left

- 2 Bands on the sphere's surface. Hold the probe within either of these bands for five stripes.

Band 1: 20 Degrees above the equator (mid-line) of the sphere.

Band 2: 20 Degrees below the equator (mid-line) of the sphere.

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

### Step 2: Calibrate the Laser Probe

The calibration process described in this step will vary depending on the type of "Measure Laser Probe Options" and the type of installed interface. Refer to the "Measure Laser Probe Options" topic for detailed information on calibration options. The following steps outline the procedure that would be used when you are first calibrating your laser probe:

1. Select the tip that you defined in Step 1 from the Active Tip List box from the Probe Utilities dialog box.

2. Click Measure from the Probe Utilities dialog box. This opens the "Measure Laser Probe Options" dialog box.

3. Click Measure to begin the calibration procedure. If you are NOT using a Perceptron V5 sensor, skip to step 5. If you are using a Perceptron V5 sensor you will first be prompted to scan the entire range of the laser's Z depth on a flat target.

4. Measure the Z-depth of your V5 sensor by doing the following:

1. Place a white piece of paper on a flat surface where you will perform the flat target calibration.

2. Hold the V5 sensor close to the flat surface so the scan line is beyond the laser's projected grid box.

3. Press and hold the sensor's trigger while moving away to the full extent of the laser's range such that the laser line crosses the grid box to the other side.

4. Release the trigger. This completes the flat target calibration.

5. Follow any on-screen instructions and visual indicators from the Laser View to complete the sensor calibration on the calibration sphere.

1. You will be prompted to move the probe to 15 different locations on the calibration sphere (5 different positions around the sphere with three different fields at each position). The laser probe will continually be probing, but it will only accept a stripe of data when certain criteria
   are met. The system needs 5 stripes of data at each of the 15 different locations
   to complete the calibration.

2. For each hit (or laser stripe) of the calibration, use the Laser View to align the red arc of the laser with the yellow arc (representing the sphere's theoretical arc) so the form and size match as close as possible.

3. Move the laser's red arc so that it remains within the green rectangular box surrounding the yellow arc. As you position the laser's arc on top of the yellow arc, an audible beeping sound increases in frequency and pitch. This helps you know when you are approaching the desired location.

4. Hold the laser probe motionless at the appropriate location until the various criteria are met. PC-DMIS will automatically accept the stripe, and prompt you to probe at a new location.

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