Topcon GPT-7500 Series, Instruction Manual

Page: 47 / 134

45
2 PREPARATION FOR MEASUREMENT
2.6 Compensation of Systematic Error of Instrument
1) Error of vertical axis (X,Y tilt sensor offset)
2) Collimation error
3) Error of vertical angle 0 datum
4) Error of horizontal axis
The above mentioned errors can be compensated by software, which calculated internally
according to each compensation value.
Also these errors can be compensated by software collimating one side of the telescope that is
carried out to delete the error by turning in normal and reverse both sides of telescope so far.
•
To adjust or reset the above compensation value, see Chapter 6 “CHECK AND ADJUSTMENT” .
•
Enable you to stop this function, see Chapter 5 “PARAMETERS SETTING MODE” or Chapter 6
“CHECK AND ADJUSTMENT”