Optical Plummet - Horizon Fitness HTS-580 Series Operation Manual

be done to insure the proper result..
5. If Index Difference does not meet the requirements after the repeated
operation the instrument should be returned to factory for inspection and repair.
Method: in step three, press the F1 (SET) key after collimating the target A.
The vertical angles shown in the Vertical Angle 0 Datum are only for reference.

12.7 Optical Plummet

Inspection
1. Set the instrument on the tripod and place a piece of white paper with two
perpendicular lines under the instrument.
2. Adjust the focus of the optical plummet and move the paper so that the
intersection point of the lines on the paper comes to the center of the field of view.
3. Adjust the leveling screws so that the center mark of the optical plummet
coincides with the intersection point of the cross on the paper.
4. Rotate the instrument around the vertical axis and at every 90° observe
whether the center mark position coincides with the intersection point of the cross.
5. If the center mark always coincides with intersection point no adjustment is
necessary. Otherwise, the following adjustment is needed.
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