RIGOL DSA875 - Manual (Page 23)

Chapter 1 To Install&Run the Software RIGOL
User’s Guide for EMI Test System 1-7
 LAN interface communication:
In the LAN tab, input the IP address of the spectrum analyzer in the input
box under "Input IP" and click "Test"; click the resource name in the
"Online LAN Resource" area and click "Connect", as shown in the figure
below.
Figure 1-2 LAN Interface Communication
(2) Via Ultra Sigma
 Connect the spectrum analyzer and PC using a USB cable;
 Start Ultra Sigma and search for the spectrum analyzer currently
connected;
 As shown in the figure below, right-click the resource name of the
spectrum analyzer connected (for example, DSA875) and select "EMI
Test System" to enter the software interface.
Figure 1-3 To Start the Software Via Ultra Sigma