Allen-Bradley 1440-SDM02-01RA, User Manual, Page: 75 / 168

Rockwell Automation Publication 1440-UM001D-EN-P - September 2016 75
Configure the XM-124 Standard Dynamic Measurement Module Chapter 2
Band Measurement Options
The Band measurement options apply to the Standard, Alternating gSE,
Continuous gSE, and Thrust Position measurement modes. These settings
affect the Band measurements that are derived from the FFT. There are four
Band measurements for each channel. Click Band to open the Band options
dialog box.
TIP The frequency ranges for each Band measurement have overlap
potential. For example, Band 1 Minimum Frequency is 500 Hz and
Maximum Frequency is 1500 Hz, and Band 2 Minimum Frequency is
1000 Hz and Maximum Frequency is 3000 Hz.
Table 11 - Band measurement parameters
In this field Values are Comments
Spectrum Option Choose whether the Band measurement is derived from the conventional
(standard) or gSE spectrum. This option is only available in Alternating gSE measurement
mode.
Frequency Units Choose Hz, CMP, or Orders. Enter Frequency Minimum and Maximum limits of the band in
the selected units.
Measurement Choose the measurement (or calculation) performed to produce the Band
Value:
• Band Overall - The band value is the square root of the sum of the
squares (RSS) of the amplitude values for the bins that make up the
band.
• Maximum Peak - The band value is equal to the maximum bin
amplitude found within the band.