Cable Diagnostics - D-Link DGS-1016D Manual

Cable Diagnostics

When the Switch is booted up (when the Switch is first powered on),
the Cable Diagnostics function is initialized and run. The Cable
Diagnostics function will detect two common faults in an Ethernet cable
connecting the Switch to a remote network device: an open circuit (a
lack of continuity between the pins at each end of the Ethernet cable or
a disconnected cable), and a short circuit (two or more conductors
short-circuited). Any of these common cable faults will be detected by
the Cable Diagnostics function and the LEDs will display the results of
the Cable Diagnostics function as follows:
Open or Short circuit
- Speed LED: Amber
- Link/Act LED: Off
Cable Connection in good status
- Speed LED: Green
- Link/Act LED: Off
During the diagnostic, each port is scanned to determine if the Ethernet
cable and connectors is in good working order. During the diagnostic
process the speed LED for each port blinks green in sequential order. If
a cable fault is detected, the corresponding port's speed LED will light
amber. The Switch is then reset for normal operation.
NOTE: the Cable Diagnostics function does not
detect the length of Ethernet cabling. Remember
that the length of cabling between two Ethernet
devices may not exceed 100 meters (or 300 feet).