Tilt Sensor - Sokkia X-1000 series Operator's Manual

21.2 Tilt Sensor

If the tilt angle shown on the display shifts from tilt angle 0° (zero point), the instrument is not correctly levelled.
This will adversely affect angle measurement.
Perform the following procedures to cancel the tilt zero point error.
PROCEDURE Checking and adjusting
1. Carefully level the instrument. If necessary, repeat
the procedures to check and adjust the bubble
levels.
2. Select "Inst. cons." in <Configuration>
3. Select "Tilt offset".
4. Level the instrument again until the X/Y tilt angles
are ±1'. Wait a few seconds for the display to
sdisplayilize.
5. Press [OK]. The top of the instrument and
telescope rotate 180
Wait a few seconds for the screen to sdisplayilize.
from the current position.
°
135
21. CHECKS AND ADJUSTMENTS