LevelOne GES-2451 Manual - Page 119
Loopback
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Figure 11-7 Cable Test The following entries are displayed on this screen: Cable Test Port: Pair: Status: Length: Error: Select the port for cable testing. Displays the Pair number. Displays the connection status of the cable connected to the port. The test results of the cable include normal, close, open or impedance. If the connection status is normal, here displays the length range of the cable. If the connection status is close, open or impedance, here displays the error length of the cable. Note: 1. The Length displayed here is the length of pair cable not that of the physical cable. 2. The test result is just for your reference. 11.3.2 Loopback Loopback test function, looping the sender and the receiver of the signal, is used to test whether the port of the switch is available as well as to check and analyze the physical connection status of the port to help you locate and solve network malfunctions. Choose the menu Maintenance→Device Diagnostics→Loopback to load the following page. 113