User manual

Choose the menu Maintenance→
Device Diagnostics→Ca
ble Test to load the following page.
Figure 12-7 Cable Test
The following entries are displayed on this screen:
 Cable Test
Port: Select the port for cable testing.
Pair: Displays the Pair number.
Status: Displays the connection status of the cable connected to the port. The
test results of the cable include normal, close, open or impedance.
Length: If the connection status is normal, here displays the length range o
f
the cable.
Error: If the connection status is close, open or impedance, here displays the
error length of the cable.
Note:
1. The interval between two cable tests for one port must be more than 3 seconds.
2. The result is more reasonable when the cable pair is in the open status.
3. t result is just foThe tes r your reference.
4. ort is 100Mbps a ormal, cable test can’t get the length of the If the p nd its connection status is n
cable.
12.3.2 Loopback
Loop function, loop
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 a
Choose the menu Maintenance→Device Diagnostics→Loopback to load the following p
age.
back test ing the sender and the receiver of
the signal, is used to test whether
nd solve network malfunctions.
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