Setting Up the Total Station
Setting Up the Total Station
Setting up the instrument anywhere
1.Extend the legs of the tripod as far as is required and tighten the screws firmly.
2. Set up the tripod so that the tripod plate is as horizontal as possible and the legs of the tripod are firm in the ground.
3. Now, and only now,place the instrument on the tripod and secure it with the central fixing screw.
Levelling-up the instrument
After setting up the instrument, level it up approximately with the bull’s-eye bubble.
Turn two of the footscrews together in opposite directions. The index finger of your right hand indicates the direction in which the bubble should move (illustration, top right).Now use the third footscrew to centre the bubble (illustration, bottom right).
To check, rotate the instrument 180°. Afterwards, the bubble should remain within the setting circle. If it does not, then readjustment is required (refer to the user manual).
For a level, the compensator automatically takes care of the final levelling up.The compensator consists basically of a thread-suspended mirror that directs the horizontal light beam to the centre of the crosshair even if there is residual tilt in the telescope (illustration, bottom).
If now you lightly tap a leg of the tripod, then (provided the bull’s-eye bubble is centred) you will see how the line of sight swings about the staff reading and always steadies at the same point. This is the way to test whether or not the compensator can swing freely.
Setting up the total station over a ground point
1.Place the tripod approximately over the ground point.
2.Inspect the tripod from various sides and correct its position so that the tripod plate is roughly horizontal and above the ground point (illustration,top left).
3.Push the tripod legs firmly into the ground and use the central fixing screw to secure the instrument on the tripod.
4.Switch on the laser plummet (or, for older instruments, look through the optical plummet) and turn the footscrews so that the laser dot or the optical plummet is centred on the ground point (illustration, top right).
5.Centre the bull’s-eye bubble by adjusting the lengths of the tripod legs (illustration below).
6.After accurately levelling up the instrument, release the central fixing screw so that you can displace it on the tripod plate until the laser dot is centred precisely over the ground point.
7.Tighten the central fixing screw again.
