D-Link DWS-3250 Product Manual - Page 278

Managing Device Diagnostics Viewing Integrated Cable Tests Viewing Integrated Cable Tests The Copper Cable Tests Page contains fields for performing tests on copper cables. Cable testing provides information about where errors occurred in the cable, the last time a cable test was performed, and the type of cable error, which occurred. The tests use Time Domain Reflectometry (TDR) technology to test the quality and characteristics of a copper cable attached to a port. Cables up to 120 meters long can be tested. Cables are tested when the ports are in the down state, with the exception of the Approximated Cable Length test. To test cables: 1. Click System > Diagnostics > Copper Cable. The Copper Cable Tests Page opens: Figure 185: Copper Cable Tests Page The Copper Cable Tests Page contains the following fields: • Port - Specifies the port to which the cable is connected. • Test Result - Displays the cable test results. Possible values are: - No Cable - Indicates that a cable is not connected to the port. - Open Cable - Indicates that a cable is connected on only one side. - Short Cable - Indicates that a short has occurred in the cable. - OK - Indicates that the cable passed the test. • Cable Fault Distance - Indicates the distance from the port where the cable error occurred. Page 277