Manual Chapter 5

6-10 Acquiring Alignment Data
When the data transfer is complete, an Analysis in Progress screen similar
to the following is displayed while the data is curved to fit a sine wave. If
the fit is satisfactory (85% and above), you are returned to the main menu
where the data may now be viewed.
5
6
Otherwise, you are warned that the data is “Unfit” (less than 85%). At this
point you should either repeat the data acquisition or try to manually con-
dition or edit the data. This built-in check helps alert you to the data losing
reliability in the misalignment calculations. Refer to “Additional Data
Detail” on page 5-34 for more information.
Note
Remember, when shaft movement due to other than misalign-
ment is present in the data this will appear as a randomness
(noise) in the data. This is not normally a problem when the
misalignment is great, but will increasingly interfere as the mis-
alignment decreases. therefore, the better the alignment, the
more likely the chance of seeing the Unfit data warning.