Collimation - Sokkia X-1000 series Operator's Manual

21. CHECKS AND ADJUSTMENTS

21.4 Collimation

If for whatever reason instrument error relating angle measurement occurs, this will adversely affect angle
measurement. With this option you can measure collimation offset constant in your instrument so that the
instrument can eliminate the angle error between Face 1 and 2. Perform the following procedures to correct
the collimation offset constant.

• Perform adjustment in weak sunlight and no scintillation.

• It is recommended to perform collimation adjusting before the measurement especially when accurate result
is desired in single face observations.
PROCEDURE Adjusting
1. Carefully level the instrument.
2. Install a target at a point about 100 m in the
horizontal direction from the instrument.
3. Select "Inst. cons." in <Configuration>.
4. Select "Collimation".
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