22. CHECKS AND ADJUSTMENTS
132
PROCEDURE Rechecking
10. Select "Tilt offset".
11. Wait a few seconds for the display to stabilize,
then read the automatically compensated angles
X3 and Y3.
12. Press
[OK]
and rotate the top of the instrument
and telescope through 180°.
13. Wait a few seconds for the display to stabilize,
then read the automatically compensated angles
X4 and Y4.
14. 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 ±10",
adjustment is completed.
Press
{ESC}
to return to <Instrument constants>.
If one of the offset values (Xoffset, Yoffset)
exceeds ±10", repeat the check and adjustment
procedures from the beginning. If the difference
continues to exceed ±10" after repeating the
check 2 or 3 times, have your local dealer perform
the adjustment.
