Leica TS12P, Руководство пользователя

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TS12P, Check & Adjust
47
Summary of errors
to be adjusted elec-
tronically
5.2 Preparation



Before starting to work, the instrument has to become acclimatised to the ambient
temperature. Approximately two minutes per °C of temperature difference from
storage to working environment, but at least 15 min, should be taken into account.

Even after adjustment of the ATR, the crosshairs may not be positioned exactly on the
centre of the prism after an ATR measurement has been completed. This outcome is
a normal effect. To speed up the ATR measurement, the telescope is normally not
positioned exactly on the centre of the prism. These small deviations/ATR offsets, are
calculated individually for each measurement and corrected electronically. This means
that the horizontal and vertical angles are corrected twice: first by the determined ATR
errors for Hz and V, and then by the individual small deviations of the current aiming.
Next Step
Instrument error Effects
Hz Effects
V Elimination
with two face
measurement Automatically
corrected with
proper
adjustment
c - Line of sight error

-
 
a - Tilting axis error

-
 
l - Compensator index error -
  
t - Compensator index error

-
 
i - Vertical index error -
  
ATR Collimation error
 
-

Before determining the instrument errors, the instrument has to be
levelled using the electronic level. Press
USER, STAT (F3) to access the
Status Menu . Select Level & Laser Plummet to access STATUS Level &
Laser Plummet , Level page.
The tribrach, the tripod and the underground should be stable and secure
from vibrations or other disturbances.
The instrument should be protected from direct sunlight to avoid thermal
warming.
It is also recommended to avoid strong heat shimmer and air turbulence.
The best conditions are early in the morning or with overcast sky.
IF the task is to THEN
adjust a combination of
instrument errors Refer to "5.3 Combined Adjustment (l, t, i, c and ATR)".
adjust the tilting axis Refer to "5.4 Tilting Axis Adjustment (a)".
adjust the circular level Refer to "5.5 Adjusting the Circular Level of the Instru-
ment and Tribrach".
adjust the laser/optical
plummet Refer to "5.7 Inspecting the Laser Plummet of the
Instrument".
adjust the tripod Refer to "5.8 Servicing the Tripod".