Rockwell Automation Publication 1441-UM001B-EN-P - September 2012 73
Setting Up Measurements Chapter 3
the Emonitor software uses an overall filter with one of the low frequency cutoffs shown
in the table below. It uses the filter whose cutoff is greater than or equal to the result
of the formula.
RSS Overall
The Dynamix 2500 data collector lets you to take a digital overall measurement,
instead of analog. This set up makes measurement collection faster. Be aware that
this Root Sum Squares (RSS) overall value is not as complete because it does not
include the power in the signal from below the first spectral bin or above the
highest spectral bin. The RSS overall values may not trend well with analog
overall measurements.
To use the RSS filter, you must create a Band Filter in the Emonitor software.
1. Select Setup > Band Filter and click New.
2. Choose RSS (digital) as the filter type.
Integrated (A to V, A to D, V to D) Non-integrated (A, V, and D)
0.36 Hz (21.6 CPM) 0.18 Hz (10.8 CPM)
5.30 Hz (318 CPM) 2.67 Hz (160.2 CPM)
23.80 Hz (1428 CPM)
The Emonitor software uses the 5.30 Hz (318 CPM) filter for an
integrated measurement. It uses the 2.67 Hz (160.2 CPM) filter for a
non-integrated measurement.
The available filters in the Emonitor software depend on the data
collectors you select as active data collectors using Tools > Set Active
Collectors:
• If you have two or more active data collectors, you may not see all
the selections available for the unit.
• If you have no active data collectors, you see all the selections for
every data collector, not just the selections for the unit.
2 30,000 CPM
400 lines
----------------------------------------
60000
400
---------------
150 CPM 2.5 Hz== =
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