Prepared By: Peter Brandt Version: 08 – 20080415
Page
18 of 26
40-6640 Service Manual
4.0 Calibration
Calibration is a process used to correct for accuracy and/or functional errors above and beyond those stated in
published specifications. While Manual-leveling, Self-leveling, and Automatic-leveling (motor driven) devices
have different mechanisms that require calibration, there are similarities with optics that are consistent regardless
of the leveling mechanism.
This service manual discusses calibration specific to the 40-6640.
All accuracy checking and calibration adjustments described below must be made while laser instrument is
secured on a leveled platform.
4.1 Checking Accuracy
Note diagram below and follow instructions on next page.
Laser Lines
Horizontal Reference
Line AOB
Vertical Reference
Line COD
Fig. 4-1-A
