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15.10 Parallel between Line of Sight and Emitting Photoelectric Axis
Inspection
1. Set the reflector 50m from the instrument.
2. Sight the center of the reflector prism with reticle.
3. Power on and enter Distance Measurement Mode. Press MEAS to measure. Rotate
the Horizontal Tangent Screw and Vertical Tangent Screw, to do electric collimation and make
the light route of EDM unblocked. In the bight zone find the center of emiting photoelectric
axis.
4. Check whether the center of reticle coincides with the center of emiting photoelectric
axis. If so, the instrument is up to grade.
Adjustment
If there is great difference between the center of reticle and the center of emitting
photoelectric axis the instrument needs repair.
15.11 Tribrach Leveling Screw
If the leveling screw becomes loose adjust the two adjusting screws in the leveling screw
to tighten appropriately.
