Total Station Manual
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3. Open EDM signal, observe maximum value of the signal, and find the center of
the launch axis.
4. Check whether the telescope crosshair center coincide with the emission
photoelectricity axis center, if they coincide on the whole we can say it qualified.
Calibration
If the telescope crosshair center deviates from emission photoelectricity axis center
largely, send it to professional repair and calibration department.
3.10 No prism ranging
The red laser beam is coaxial with the telescope, used for no prism ranging, and
it is sent by telescope. If the instrument has been calibrated, red laser beams will
coincide with the line of sight. External influence such as the vibration, the larger
temperature change and other factors may make laser beam and viewing not
overlap.
Before precise ranging, you should check whether the direction of the laser
beam is coaxial. Otherwise, it could lead to inaccuracy.
Warning:
Looking straightly at the laser is dangerous.
Prevention:
Don't look laser beams directly, or focus on others.
Checkout
Put the gray side of the reflector towards the instrument, and put it 5 meters
and 20 meters away. Start laser direction function. Focus on the reflector center by
the telescope crosshair center, and then check the position of the red laser point.
Generally speaking, the telescope is equipped with special filter, human eyes cann’t
see laser point through the telescope,you can see the offset between the red laser
point and the reflector crosshair center, you can observe this above the telescope or
at the side face of reflector . If laser center coincide with the crosshair center, it
indicate that the adjustment meet required accuracy. If the offset between the
pointsposition and the mark of crosshair is out of limitless, it need to send it to
professional department for adjustment.
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