Product Manual
Table Of Contents
- Safety Information
- Introduction
- Getting Started
- Set up
- Setup
- Starting the Instrument
- Leveling
- Instrument Setup
- The Laser Pointer
- Measuring the Instrument Height
- Adjusting the Optical Plummet
- Pre Measurement Check List
- Connecting a Data Collector
- Instrument Technology
- Care & Maintenance
- Appendix
63
In the instrument, perform a pre-measurement trunnion axis
tilt test to determine the trunnion axis tilt error. Angular
measurements are observed in both instrument faces, the
trunnion axis tilt error is calculated, and the respective
correction value is stored in the instrument. The trunnion axis
tilt correction value is then applied to a correction to the
horizontal angle value and an automatic repointing of the
telescope using SurePoint technology.
Carry out a trunnion axis tilt test in the following situations:
• Whenever the instrument may have been roughly handled
during transport.
• When the ambient temperature differs by more than 10 °C
(18 °F) from the previous collimation test.
• Immediately prior to high precision angle measurements in
one face, especially where the vertical angles significantly
deviate from the horizontal plane.
Trunnion axis
tilt error