SPECTRA PRECISION FOCUS 2 SERIES TOTAL STATION USER GUIDE
7 –
Checking and Adjustment
137
9. Set up another tripod at point R, on the line between point P and point Q.
10. Transfer the total station to the tripod at point R.
11. Measure the distance from point R to point P (RP), and from point R to point Q (RQ).
12. Calculate the difference between the value of PQ and the value of RP + RQ.
13. Move the total station to other points on the line between point P and point Q.
14. Repeat Step 5 through Step 13 ten times or so.
15. Calculate the average of all the differences.
The error range is within 3 mm. If the error is out of range, contact your dealer.
Checking the laser pointer
The total station uses a red laser beam as a laser pointer. The laser pointer is coaxial with the line of
sight of the telescope. If the instrument is well adjusted, the red laser pointer coincides with the line
of sight. External influences such as shock or large temperature fluctuations can displace the red
laser pointer relative to the line of sight.
1. On the center of a piece of paper, draw a target in the form of a vertical line and an intersecting
horizontal line.
2. Set the target on a wall about 10 m (30 ft.) from the instrument and sight the instrument to the
point of intersection of the two lines on the target.
3. With the instrument powered on, turn on the laser pointer.
4. Check that the center of the laser pointer coincides with the point of intersection.
5. If this is not the case, the instrument should be taken to an authorized service center for
adjustment.
