| Calibration is your responsibility, check it often.
Although the LaserVision® AUTO is an exceptionally rugged laser, it is well worth the effort to check calibration before you first use it and then at regular intervals to insure that you are doing the highest quality work possible. Always check calibration if the laser has been handled roughly.
Calibration procedure
Note: Refer to the picture on page 2 for a diagram of the "X" and "Y" axis directions used during this calibration procedure.
- Start with a tripod or stand that has been leveled (using a carpenter's level) to allow the laser to be turned to different positions with minimal re-leveling of the circular level vial. Attach the laser to the tripod or stand approximately 50 feet (15m) from a wall or other stable vertical surface. We will call the vertical surface the target. If the target has direct sunlight on it, you may have to shade the surface to see the laser spot clearly.
- Turn the entire laser so that one direction of the x-axis is aimed at the target. Center the circular level vial and turn the laser on.
- With the rotation stopped, point the laser spot at the target by manually turning the rotating head and mark the beam center.
- Return to the laser and rotate the entire unit 180 degrees so that the opposite X-axis direction is aiming at the target. Re-center the bubble in the circular level if necessary. Once again, point the laser spot at the target by manually turning the rotating head and mark the beam center.
- The difference between the two marks (if any) is double the difference between how the laser is calibrated and true level for the X-axis. Half way between these two marks is true level. Make a long level mark at true level. If the difference between either outer mark and true level is within your working tolerance, go on to step 8. If not, continue with the next step.
- Remove the black rubber plug from the X-axis calibration port. Using a 3/32" hex driver, adjust the X-axis calibration. Turning the screw clockwise will raise the beam in the +X axis (see pg 2). One full turn of the screw will make approximately a 3/4"(19 mm) change at 100'(30m) turn the screw only as much as it will take to correct any error observed in step 5. After making the adjustment, remove the laser from the platform and give it two vertical shakes to center the compensator. Adjusting calibration pushes on the pendulum of the compensator and can cause it to take a set. The shaking procedure will relieve any set that may have occurred. After shaking, place the laser on the platform and re-check the X-axis calibration. Make any further adjustments following the above procedure.
- Rotate the laser 90 degrees to aim the +Y-axis (control panel) at the target. Re-center the bubble. Check the reading at the target. If the reading is on, or within tolerance of the true level mark, calibration is complete. If not, continue on.
- Remove the black rubber plug from the Y-axis calibration port. Using a 3/32" hex driver, adjust the Y-axis calibration. Turning the screw clockwise will raise the beam in the +Y-axis (see pg. 2). One full turn of the screw will make approximately a 3/4"(19 mm) change at 100'(30m) turn the screw only as much as it will take to correct any error observed in step 7. After making the adjustment, remove the laser from the platform and give it two vertical shakes to center the compensator. Adjusting calibration pushes on the pendulum of the compensator and can cause it to take a set. The shaking procedure will relieve any set that may have occurred. After shaking, place the laser on the platform and re-check the Y-axis calibration. Make any further adjustments following the above procedure.
Calibration is now complete. |
