152 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Chapter 4 Measurement Definition
Number of Spectrum Lines Fixed at 1800, 1000, or 600. The Bands FFT is calculated from a fixed sample size time waveform. Therefore
the number of spectrum lines is fixed and dependent on the decimation and
filtering applied.
Synchronous sampling (alternate path) is also a form of decimation, so it
processes a1000 line FFT (over the specified number of orders).
(1)
Or if the Measurement Type (See Hardware Configuration Page) is either of the
aeroderivative selections.
Signal Detection Select from:
•Peak
•Peak to Peak
•RMS
Select the scaling (detection) method for the FFT line / bin values.
Table 32 - Bands (continued)
Parameter Values Comments
Decimation
None Alternate Path
(1)
Primary Path
1800 1000 600