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Order Analysis - Wrong Result

I have a analysis project that get signal of 2 proximitors (prox1 and prox2), analog tacho signal is analysed in OAT analog tacho process.vi and the proximitor signals is analysed in OAT convert to even angle signal.vi, after in OAT order magnitude and phase.vi and finally in OAT orbit plot.
 
Look for result2.jpg and code.jpg figure. I enter with proximitors signals in OAT convert to even angle signal.vi. My problem is that Magnitude[RMS] output in OAT order magnitude and phase.vi return 2  firsts results empty (look Magnitude[RMS] in result2.jpg) and the next results valids. The unique tip that i have is that for each sample (prox1 and prox2 in result2.jpg) i see in Y values, 2 first values inverteds.
 
First and second Y values of prox1 is lesser in comparate to prox2, but from third until last Y value, the Y values is inverted in same comparison.
 
I try change entered data, but the same problem occur.
 
Consequence is that don't show first and second orbit plot...only from third until last.
 
xxxxxx Labview 7.1 - WinXP xxxxxx
 
Leonardo de S. Cavadas
Maintenance Engineer and Inspection - Bureau Veritas do Brasil

Engineer Metallurgist with emphasis in Advanced Materials
Technologist in Computer Science
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