User's Manual

12.6 COMPENSATION OF VERTICAL INDEX DIFFERENCE

Inspection

1. After leveling the instrument, make the EDM

parallel with the line connecting the center of

the instrument to any one of the screws. Lock the

horizontal clamp screw.

2. Switch on the equipment, zero the vertical

index. Lock the vertical clamp screw and the

instrument will display the vertical angle value.

3. Rotate the vertical tangent unit slowly in either

direction about 10mm in circumference, and the

overrange message appears. It means that the

tilt of vertical axis is larger than 4’, over the range

of compensation. When rotate the vertical

tangent unit in opposite direction back to the

original place, the instrument will show the

vertical angle again, it means that the

compensation of vertical index difference works

well.

Adjustment

If the compensation function is not working,

please send the instrument back to the

authorized agency for maintenance.

12.7 VERTICAL 0 (I ANGLE)

The adjustment of vertical index difference (the so-called i-angle).This item must be adjusted after

finishing the adjustment of tilt-sensor and crosshair.