Chapter 7. Test Menu7-2 ESU LT User Manual 61200410L1-1Network TestsNetwork tests are used to control the activation of loopbacksand the initiation of data test patterns.The network tests are run on the network interface (NI).Three different test configurations can be selected todetermine the type of loopback and the pattern to run. Testresults are displayed in the LCD window. See Figure 7-2.Figure 7-2. Local Loopback ScreenLOCAL LOOPBCKThere are three available choices for setting the localloopback:No LoopbackDeactivates the loopback.Line OnActivates the line loopback.Payload OnActivates the payload loopback