Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 67)

Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012 67
Setting Up Measurements Chapter 2
Emonitor chooses an overall filter with one of the low frequency cutoffs
shown in the table below. It uses the filter whose cutoff is less than the
result of the formula.
• Overall - Typically this filter maps to a specific high pass filter in the data
collector and is available for magnitude, spectrum, and time waveform
measurements. In the Enpac 2500, it maps to the Enpac filters shown in
the table below, depending on the results of comparing the filter choice to
the formula below.
Emonitor uses the following formula.
Emonitor 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.
Integrated (A to V, A to D, V to D) Non-integrated (A, V, and D)
5.30 Hz (318 CPM) 2.67 Hz (160.2 CPM)
23.80 Hz (1428 CPM)
EXAMPLE
ATTENTION: Emonitor 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.
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)
EXAMPLE
ATTENTION:
Emonitor 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.
2 120,000 CPM 
400 lines
-------------------------------------------
240000
400
------------------ 600 CPM 10 Hz = = =
2 (max frequency)
number of lines
--------------------------------------------
2 30,000 CPM 
400 lines
----------------------------------------
60000
400
--------------- 150 CPM 2.5 Hz = = =