Measurement Computing Medallion Rotate rev.2.3 - Manual (Page 10)

10
Medallion Rotate Manual October 2000
F
EATURES
A
VAILABLE
O
NLY IN
M
EDALLION
R
OTATE
P
LUS
The following features are available only in Medallion Rotate Plus, and not
in the standard Medallion Rotate. You can upgrade your copy of Medallion
Rotate to Medallion Rotate Plus to get these additional features. Contact Zonic
Corporation for more information.
B
EARING
, G
EARBOX
,
AND
S
IDEBAND
C
URSORS
Medallion Rotate Plus includes three new cursors. For more information on
plotting features, refer to Chapter 4, “Medallion Rotate Plotting Features”.
• The Rolling Element Bearing cursor displays up to 6 cursors to help
you identify peaks caused by individual components of a bearing.
• The Gearbox cursor displays up to 8 cursors based on the number of
input and output gear teeth to help you identify peaks caused by gears.
• The Planetary Gearbox cursor displays up to 11 cursors based on the
number of gear teeth to help you identify peaks caused by planetary
gears.
• The Sideband cursor displays a user-defined number of sideband
cursors to help you identify sideband frequencies around a primary
frequency.
O
RDER
N
ORMALIZING
Medallion Rotate Plus can resample a time waveform to order normalize the
data when performing a Waterfall analysis. Order normalization cancels the
effect of frequency smearing across spectral bins when the shaft speed is
changing rapidly (high slew rate). It ensures that order-related peaks are aligned
with the orders when plotted against the orders.
M
ILLSTRUM
A
NALYSIS
Millstrum analysis in Medallion Rotate Plus simplifies the process of
identifying families of harmonics and sidebands. Millstrum analysis does this
by removing non-repetitive events and presenting the results in an easily-
understood format. It is similar to using the cepstrum, but goes further in
simplifying the results so that you do not have to perform any additional
calculations.