SHANGHAI ESURVEY GNSS CO., LTD.
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5.6.2 Vertical Index
The deviation between vertical circle zero position and horizontal direction is vertical index.
It is necessary to concern this error when measuring vertical angle.
Because of the close relationship between vertical index and compensator zero position, it
is necessary to check and adjust compensator zero position when adjusting the vertical
circle, to keep the value stable when reading.
The whole process is as follows:
Before adjusting the vertical index error, make sure the horizontal collimation error has
been adjusted.
To adjust the vertical index error, do the following:
1. To select V-Index, press MENU, press PAGE to go to the second page, press F1
ADJ / 5, and press F2 / 2 in CHECK &ADJUST display:
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