User`s guide

Filtering Data
4 If your data contains multiple input/output channels, in the Chan nel
menu, select the channel pair you want to view. Although you view only
one channel pair at a time, the filter applies to all input/output channels
in this data set.
5 Select the data of interest using one of the following w ay s:
• Graphically — Draw a rectangle with the mouse on either the
input-signal or the output-s ignal plot to sele ct the d es ired frequency
interval. Your selection is displayed on both plots reg a rdless of the plot
on which you draw the rectangle. The Range fi eld is updated to match
the selected reg io n. If you need to clear your selection, right-click the
plot.
• Specify the Range — Edit the beginning and the end frequency values.
For example:
8.5 20.0 (rad/s).
Tip To change the frequency units from rad/s to Hz,select
Style > Frequency (Hz). To change the frequency units from
Hz to
rad/s, select Style > Frequency (rad/s).
6 In the Range is list, select one of the follo wing:
•
Pass band — Allows data in the selected frequency range.
•
Stop band — Excludes data in the selected frequency range.
7 Click Filter to preview the filtered results. If you are satisfied, go to step 8.
Otherwise, return to step 5.
8 In the Data name field, enter the name of the data set containing the
selected data.
9 Click Insert to save the selection as a new data set and add it to the Data
Board.
10 To select another range, repeat steps 5 to 9.
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