Tool tips on electronic compensator adjustment and maximum
electronic angle accuracy error.
A: Mechanically, there is nothing that the user can (or should) adjust on a total station's electronic compensator. Just as the plate vial does, the electronic tilt sensor measures the tilt of the vertical axis in the direction of the line of sight through the telescope. It may also sense tilt in the direction at right angles to the telescope. If it only has the former sensing capability, it is sometimes referred to as a "single-axis" compensator. The latter is called a "dual-axis" compensator. Depending on the manufacturer, it is likely that your product's manual includes instructions on adjusting the compensator, just as its mechanical counterparts, electronic compensators can go out of adjustment. Because the workings of the compensator are buried within the instrument's body, and the adjustments are generally made using the application software on the instrument, it is particularly easy to overlook this critical component to making accurate measurements.