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You can use LabVIEW SignalExpress to generate and analyze signals to 
evaluate designs without programming. This chapter teaches you how to 
work with signals in LabVIEW SignalExpress, including how to plot 
signals on graphs, import signals from a file, interactively align and 
compare two signals, and save signals to a file.

Complete the following steps to plot signals in a sample project and 
examine the signals visually using cursors.

1.

Select File»Open Project, navigate to the 

SignalExpress\

Examples\Tutorial

 directory, and double-click 

Signals.seproj

. This project configures the Create Signal step 

to create a square wave signal and the Filter step to perform a lowpass 
Butterworth filter.

2.

Drag the step signal output of the Create Signal step to the Data View.

3.

Drag the filtered step output of the Filter step to the Data View.

You can plot signals of the same signal type on the same graph. Both 
the step signal and the filtered step signals are time-domain signals, 
so they appear on the same graph. If you want to plot signals of 
different types, drag the signals to the same graph and LabVIEW 
SignalExpress creates a new graph.

4.

Click the Add Display button, shown at left, on the toolbar to create a 
new graph.

5.

Drag the filtered step output of the Filter step to the new graph.