User`s manual

COARSE ADJUSTMENT
The first thing you will need to do in a roll parallelism measurement is to line
up the laser beam parallel to a reference. It is not necessary to do this
accurately. It is only required that you adjust the beam to hit the detector
surface. The software handles the deviation between the laser beam and the
reference.
The reference can be either floor datum marks (floor monuments) or a roll.
The following procedure will describe how to set up the equipment using floor
datum marks as reference. Rough line up of the laser using a roll as the
reference is de- scribed in the application notes.
Coarse setting of the Laser Transmitter T220
Position the Triangular Bases over two of the datum floor marks. The
Triangular Base is leveled using the spirit level on the Detector Probe
Guide and the adjustment screws on the Triangular Base. Adjust the
level in two directions. Position the Detector Probe Guide with the
Detector Probe and fix it with the tip of the probe on the datum mark.
The reflecting tape should face the Laser Transmitter. When one of the
Triangular Bases is correctly positioned carefully lift up the Detector
with the Detector Probe and repeat the procedure for the second
Triangular Base.
Position the tripod with the Laser Transmitter so that the laser beam
lines up as close to the reflecting tape as possible. Note that the entire
laser spot must hit the Detector surface without being blocked. A too
steep angle between the laser beam and the Detector may result in
unreadable signals. Carefully move the tripod until you reach the best
possible position
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