User's Manual

Trimble TS862 and TS835 Total Stations User Guide 47
Checking and Adjustment 4
3. Measure the distance between Point P and Point Q (PQ).
4. Install a reflector prism on the tripod at Point P.
5. Set up another tripod at Point R, on the line between Point P and Point Q.
6. Transfer the TS862 / TS835 instrument to the tripod at Point R.
7. Measure the distance from Point R to Point P (RP), and from Point R to Point Q
(RQ).
8. Calculate the difference between the value of PQ and the value of RP + RQ.
9. Move the TS862 / TS835 instrument to other points on the line between Point P
and Point Q.
10. Repeat
Step 5 through Step 9 ten times or so.
11. 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 TS862 / TS835 total station uses a red laser beam to 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.