Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector - Manual (Page 79)

Rockwell Automation Publication 1441-UM001B-EN-P - September 2012 79
Setting Up Measurements Chapter 3
You can either select a value from the drop down list, or you can enter a value in
Maximum frequency in the Collection Specification dialog box. If you enter a
value that does not match one of the values above, the Emonitor software uses the
next higher maximum frequency.
Measurement Resolution
The measurement resolution is part of the collection specification (Setup >
Collection). See
Collection Specification Dialog Box on page 75 .
Select the collection specification when you set up the measurement definition.
The Emonitor software and the Dynamix 2500 data collector support these
resolutions.
The values that appear in the Number of lines drop down list in the Collection
Specification dialog box are those for spectrum measurements. The Emonitor
software uses the corresponding number of time samples from the table above for
time measurement definition.
You can calculate the number of time samples from the number of spectral lines
using this formula.
You can calculate the total time required to collect a time waveform measurement
from the Number of lines value and the Maximum frequency value in the
Collection Specification dialog box (Setup > Collections).
Table 23 - Measurement Resolutions
Spectral Lines Time Samples
100 256
200 512
400 1024
800 2048
1600 4096
3200 8192
6400 16,384
12,800 32,768
25,600
(1)
(1) The Emonitor software does not currently support 25,600 spectral lines and will
not upload this data.
65536
(2)
(2) The data collector is able to take the time samples Offroute but will not upload the
data to the Emonitor software.
time samples spectral lines 2.56  =