ADA INSTRUMENTS 5D CROSSPOINT, Operating Manual

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CROSSPOINT
MEASUREMENT FOUNDATION
5D CROSSPOINT
4. Check the vertical accuracy Check the vertical accuracy
Find an old building without wind, mark point A at 3m high. Along point A set a plumb, and then mark point � on the loor.
Put the unit far away from the point � about 3m. Turn on the unit, and make the vertical beam aim at the point �.
Under this status, mark the point C near the point A on the wall, it is ok if the value between A and C is less than 1.5mm.
5. Check the accuracy of up & down dots Check the accuracy of up & down dots
In a 4m high room, set the unit on a plat where is far away from the loor about 1m, and then turn on the unit. When the down dot
shoots on the loor, mark the point A, the up dot shoots on the ceiling, mark the point �. Rotate the unit 180°and make the down
dot aims at the point A.Then mark point � on the ceiling. Measure the distance between point � and point ��, if the value is
greater than 3mm, the unit must be returned to the authorized service center.
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