3-87
Laser Address Selection
Averaging Mode
This mode of operation is intended to allow multiple sampling of data in order to
reduce the noise in the data by averaging all of the acquired values. In the Aver-
aging Mode, a direction of rotation for the data acquisition is defined in the same
manner as it is in the Standard mode. However, instead of always over-writing the
last data reading stored at the same angular position, the new readings will be aver-
aged with the previous readings if the laser head has been moved at least 20° in the
reverse direction or a full 360° sweep is performed. In this mode of operation, once
the direction of rotation is defined by the laser heads, only the data in that direction
of rotation will be acquired; therefore, any backward rotation of the shaft due to
backlash will not be acquired and thus will not affect the alignment results. The fol-
lowing scenario will clarify the intended operation.
1.
Assume that the data acquisition’s direction of rotation is defined as
clockwise (see scenario for Standard Mode).
2.
If the laser heads are rotated in the clockwise direction to an angle of 50°,
data is acquired and stored for each angular position in this rotation.
3.
If the laser heads are then rotated in the counter-clockwise direction for 10°
(back to an angle of 40°), all data acquired is ignored in the counter-
clockwise direction since the direction of rotation is not in the data
acquisition’s direction of rotation.
4.
If the laser heads are again rotated in the clockwise direction for 25° (to an
angle of 65°), the data acquired for each angular position will over-write the
previous data acquired because the angle of negative rotation was not at least
20°.
5.
If the laser heads are then rotated in the counter-clockwise direction for 30°
(back to an angle of 35°), all data is ignored because of the direction of
rotation.
6.
Now if the laser heads are rotated in the clockwise direction for 360° - the
data for the angular positions in the range 36°to 65° will be averaged with the
previous values since there has been a rotation of at least 20° away from the
stopping point. The data for the angular positions in the range 66° to 359°
will receive a data value since the direction of rotation is correct. The data
angular positions in the range 0° to 35° will be averaged with the previous
values since the rotation in the clockwise direction passed the starting point
(i.e. 360° sweep).
Summary of Contents for 2130 RBM Consultant Pro
Page 6: ...vi ...
Page 20: ...1 8 Fixtures Case Layout top section ...
Page 90: ...3 10 Horizontal Alignment ...
Page 364: ...5 22 Straightness Measurements ...
