Emerson 2130 RBM Consultant Pro, Reference Manual

Page: 199 / 394

3-119 Laser Address Selection
During the data transfer, the previous screen shows the progress of the data transfer
for each laser head. When the data transfer is complete, the data is analyzed and a
sine wave is fit to the data.. If the fit is satisfactory (85% and above), the program will
mark the Sweep Laser Heads step back on the Main screen completed and
advance you to the next step in the procedure. In addition to marking the Sweep
Laser Heads step complete, the number of moves displayed in the upper section of
the main screen is updated.
If the fit is unsatisfactory (less than 85%) a warning message displays to inform you
that the data is “Unfit”. At this point you should either repeat the data acquisition
or try to manually condition or edit the data using the edit data function. This built-
in check helps alert you to a concern with the reliability of the collected data. Refer
to the Display Sine Fit section on page 3-168 for more information.
Note
Remember, when shaft movement due to factors other than misalign-
ment is present in the data this will appear as randomness (noise) in
the data. This is not normally a problem when the misalignment is
great, but will increasingly interfere as the misalignment decreases.
Therefore, the better the alignment the more likely the chance will
be of getting an unfit data warning.
If you do encounter a machine where this becomes a problem too great to over-
come (for example an unfit sine curve or the presence of too much background
vibration), consider switching to an alternative method such as Manual Sweep or
Auto 4 Point. Refer to the Sweep Mode Curve Data section on page 3-126 and Data
Quality section on page 3-127 for more information.
Dual Pass Cable (8215C2-PM) - Models 821500 and 822500 Only
The 8215C2-PM Dual Pass cable is required when using the Dual Pass method for
RF communication between the analyzer and the laser fixtures.