South A1 Series User Manual

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13.6 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.
13.7 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.

South A1 Series Specifications

General

Display	LCD
Battery Life	8 hours
Distance Measurement Accuracy	±(2 mm + 2 ppm) with prism, ±(3 mm + 2 ppm) reflectorless
Operating Temperature	-20°C to +50°C
Power Supply	Rechargeable battery