Manual Chapter 5

5-26 Using UltraSpec Alignment - General Overview
• 4 Point Auto – the four point automatic mode is a more traditional
style of acquiring data for alignment. The laser heads are mounted
on a shaft, and the shaft is then rotated so that data can be taken when
the laser heads are at the 12 o’clock (0 or 360°), 3 o’clock (90°), 6
o’clock (180°), and 9 o’clock (270°) positions. The readings are con-
tinuously averaged whenever the laser heads are at one of these posi-
tions and automatically recorded when the shaft is rotated to the next
position. The averaging process reduces variation from jitter due to
background vibration or from slight changes in the angular position
of the heads.
• 4 Point Manual – similar to the 4 Point Auto mode except that the
user has complete control over when data is acquired and which of
the four measurement positions it will be used in. This mode is useful
when the machinery is not mounted in a true horizontal orientation,
so that the inclinometer is not effective or when the clock positions
relative to vertical and horizontal base movements of the machine are non-
standard.
• Straightness – allows the laser heads to be used to collect elevation
readings for surface profile analysis.
• Dual Pass – functions similar to the Auto Sweep mode except data
is automatically acquired as each laser head passes by each other.
This mode, like Manual Sweep, is useful for performing uncoupled
or non-rotational alignments.