Setting Up and Collecting Off Route Orders Measurements
dataPAC User’s Guide
125
To set up an off route spectrum measurement with Orders Based and no trigger, set up your
measurement parameters as shown in the Spectra Measurement Parameters menu.
For Orders Based, a fixed sampling rate is used and the tachometer is not required.
Although the orders spectra for both Orders Based and Orders Track have the same display
unit (orders) in the X axis, the data sampling and results are different for variable speed
machines. As shown in the figures below, the smearing is obvious in the Orders Based
spectrum and its zoom-in display. In contrast, Orders Track yields clean spectrum. In these
examples, the data was taken from a variable speed motor-demo unit.
Here is an example of an Orders Based spectrum measurement.
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Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
