THEIS DTC 5.1 Instructions De Service page 20

5. Power supply
The theodolite is powered by a rechargeable lithium battery.
A fully charged battery (battery indicator "■■■") provides an
operating time up to 15 to 20 hours. When "■" is displayed the
remaining operating time is approx. 2 hours. A flashing "■" indicates
a remaining working time of approx. 20 minutes. The battery should
be charged now at the latest using the charger provided.
Switch off the device when removing and inserting the battery. To
do so, press the lateral buttons on the battery compartment and
remove the battery. Proceed accordingly when inserting the battery
compartment again.
To charge, insert the plug of the charger into the charge socket of
the battery. 220 V or 110 V are required for charging. The red light
indicates that the battery is being charged. Charging is completed
when the green light comes on.
6. Preparation for measuring
Position the theodolite onto a tripod with 5/8" tightening screw and
tighten lightly. Adjust the circular level precisely with the adjustment
screws.
Next, align the device exactly over a fixed point using the integrated
laser plummet. The eyepiece is used to focus the reticle and the
focusing ring is used to focus the point on the ground.
Now tighten the tripod screw firmly. Align the lateral level on a line
connecting the two adjustment screws. Set the bubble in the centre
using the adjustment screws.
Turn the device by 90° and centre the bubble with t he remaining
adjustment screw. Check the instrument in all positions for rotation.
Now verify the location of the laser plummet to make sure the
device is still aligned over the base point; if necessary, loosen the
tripod screw again and move the device on the tripod head followed
by aligning it again with the adjustment screws.
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