User's Manual
Table Of Contents
- 1. Precautions for safety
- 2. Nomenclature
- 3. Preparation before measurement
- 4. Basic functions
- 5. Instrument settings
- 6. Measurement
- 7. Data management
- 8. Check and adjustment
- 9. Technical features
- 10. Kit components
- Appendix I: Atmospheric correction formula and chart
- Appendix II: Correction for refraction and earth curvature
- Appendix III: Technical drawing
- Limited warranty standard
- Environmental recycling
Stonex R80 Robotic Total Station - User Manual 59
8. Check and adjustment
8.1. The instrument constant
I. Check
It is suggested to observe and compare the instrument with a testing baseline which is set on stable ground with
accuracy, though error is not generally included in the instrument constant. If the testing line is unavailable, you
can select a flat place and set up the instrument and a target in the same height.
1. Select a point B on the approximately horizontal line AC with about 100 meters long. Measure the distances
of lines AB, AC and BC.
2. The instrument constant can be calculated;
πΌππ π‘ππ’ππππ‘ ππππ π‘πππ‘ = π΄π΅ + π΅πΆ β π΄πΆ
3. Repeat steps 1 and 2 ten times, and get the average value for instrument constant, if the average value is
within Β±3mm, adjustment is unnecessary.
4. If the difference is over Β±3mm after the preceding operations, it is necessary to reset the instrument
constant.
II. Adjustment
If it is necessary to reset the instrument constant, please contact STONEX service representative to perform that.
A
B
C
AB
BC
AC