geo-FENNEL FET 220K-L User Manual page 19

OPERATION
PREPARATION FOR MEASUREMENT
Level and centre the instrument precisely to ensure an optimum performance.
· Tripod
Extend the tripod legs to a suitable height and tighten them.
· Fix the instrument onto the tripod
Attach the instrument onto the tripod carefully. Screw in the retaining bolt until the instrument is
carfeully fixed.
· Level the vials
For this power on the instrument; the electronic vial will appear automatically in the display after the
beep. First adjust the ciruclar vial, then adjust the plate vial. The plate vial has been adjusted correct-
ly and the instrument is leveled perfectly if the plate vial stays centered no matter in which direction
the instrument is rotated.
· When the vials have been centered press SFT to quit the display indication.
Ground point centering
· The ground point can be marked with the laser point.
POWER ON THE INSTRUMENT
· Keep the ON/OFF key pressed for 1 sec.
· A beep will sound and the electronic vial will be displayed.
When both directions X/Y have been levelled press SFT to
quit this mode.
Now the instrument is ready for use.
· The vertical angle indication will show the current value.
· Press the key V/% to switch the vertical angel indication
to %.
TILT CORRECTION FUNCTION
This theodolite is equipped with a compensator (display indication CRM). The TILT angle of the instru-
ment will be compensated automatically by the device. If the instrument is tilted too much TILT will be
shown on the display which means the instrument exceeds the compensator range. Level the instru-
ment more precisely (for activation / de-activation see (SETTING METHODS).
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