Measurement-computing Medallion Rotate rev.2.3 Manuel d'utilisateur télécharger pdf (Page 10)

Medallion Rotate Manual October 2000

FEATURES AVAILABLE ONLY IN MEDALLION ROTATE PLUS

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.

BEARING, GEARBOX, AND SIDEBAND CURSORS

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.

ORDER NORMALIZING

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.

MILLSTRUM ANALYSIS

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.

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Measurement-computing Medallion Rotate rev.2.3 Manuel d'utilisateur Page 10