Collimation - Sokkia CX-52 Operator's Manual

33. CHECKS AND ADJUSTMENTS
16. In this state, the following offset
values (tilt zero point error) are
calculated.
Xoffset = (X3+X4)/2
Yoffset = (Y3+Y4)/2
When both offset values fall within
the range ±20", adjustment is
completed.
Press {ESC} to return to <Instr.
const>.
If one of the offset values (Xoffset,
Yoffset) exceeds ±20", repeat the
check and adjustment procedures
from the beginning. If the
difference continues to exceed
±20" after repeating the check 2 or
3 times, have your local dealer
perform the adjustment.

33.3 Collimation

With this option you can measure collimation error in your instrument so that the
instrument can correct subsequent single face observations. To measure the
error, make angular observations using both faces.

• Perform adjustment in weak sunlight and no scintillation.
PROCEDURE
1. Carefully level the instrument.
2. Install a target at a point about
100m in the horizontal direction
from the instrument.
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