National Instruments 373873C-01 用户手册

The default work area, Monitor/Record, allows you to take 
measurements, analyze live data, and log data. You must be in the 
Playback work area to use logged data as an input for an analysis step. 
For example, you can take a measurement and log the signal in the 
Monitor/Record work area, and then run the logged data through an 
analysis step in the Playback work area.

2.

Click the Add Step button, shown at left, and select the Filter step from 
Processing»Analog Signals»Filter. LabVIEW SignalExpress 
automatically selects the first signal you logged as the input to the 
Filter step.

3.

Navigate to the Data View. Drag the filtered data output of the Filter 
step into the Data View to view the resulting signal.

4.

Click the Run button, shown at left. The Data View displays the 
resulting filtered signal and LabVIEW SignalExpress plays back the 
entire log.

You can configure advanced data playback options by using the Playback 
Options View. The Playback Options View displays a preview of the 
logged data and allows you to select a subset of that data to play back or run 
through analysis steps.

1.

Select View»Playback Options to open the Playback Options View, 
as shown in Figure 5-5. The Playback Options View allows you to 
preview the logged data, as well as specify a subset of the logged data 
to play back or send to analysis steps.