SOUTH
ET
‐
02/05
ELECTRONIC
THEODOLITE
SERVICE
MANUAL
23
SOUTH
SURVEY
&
MAPPING
INSTRUMENT
CO.,
LTD.
23
Readjust the leveling hand wheel C 5 grids down from the reticle
center, and note down the F value F2.
Calculate out the coefficient as: K=
（
|F1|+|F2|
）
/300, for
example, K=(627+554)/300=3.93 Press “FUNC” to enter the
compensator mode, and input the K value “3.93”, after that,
press “FUNC” to save.
After rectification, level the theodolite, and enter the angle measurement mode, aim the instrument at reticle
center of the collimator, adjust the leveling hand wheel C to adjust the instrument 5 grid up and down from the
reticle center. Observe the difference of the V value. If the difference is within 10”, the calculation of K value is
correct. Otherwise, repeat the steps above.
7. I angle (Vertical Angle)
Sight the instrument at a certain graduation on vertical crosshairs
in horizontal collimator, and note down the vertical angle value
Note down the vertical angle value V1, as shown in the figure,
V1 is 90°00’00”.
Reverse the instrument to circle right and sight it at the same
position.
Note down the angle value V2. As shown in the figure, V2 is
270°00’50”. Then use the formula “I= (V1+V2-360°)/2” to
calculate out the I angle which should be within the range of
±10. Otherwise, it is necessary to be adjusted.
As shown in the figure, I= (90°00’00”+270°00’50”-
360°)/2=25>±10, the instrument needs to be adjusted.
Press “POWER ON” and “OSET” to enter the adjustment mode.
Turn the theodolite to circle life and aim at a certain
graduation on the vertical crosshairs of the scale in horizontal
collimator, note down the value.
