LevelOne GTL-2691 - Manual (Page 172)

C HAPTER 5 | Interface Configuration
Port Configuration
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Figure 37: Showing Port Statistics (Chart)
P ERFORMING C ABLE
D IAGNOSTICS
Use the Interface > Port > Cable Test page to test the cable attached to a
port. The cable test will check for any cable faults (short, open, etc.). If a
fault is found, the switch reports the length to the fault. Otherwise, it
reports the cable length. It can be used to determine the quality of the
cable, connectors, and terminations. Problems such as opens, shorts, and
cable impedance mismatch can be diagnosed with this test.
CLI R EFERENCES
◆ "Interface Commands" on page 997
C OMMAND U SAGE
◆ Cable diagnostics are performed using Digital Signal Processing (DSP)
test methods. DSP analyses the cable by sending a pulsed signal into
the cable, and then examining the reflection of that pulse.
◆ Cable diagnostics can only be performed on twisted-pair media.
◆ This cable test is only accurate for cables 7 - 140 meters long.