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D-Link DGS-1005D Unmanaged Gigabit Ethernet Switch
the specified 100 ohms). Any of these common cable faults will be detected by the Cable
Diagnostic function and the LEDs will display the results of the Cable Diagnostic function as
follows:
Open, Short, or Improper Termination − Speed LED: Amber − Link/Act LED: Off
Cable connection good − Speed LED: Green − Link/Act LED: Off
The Cable Diagnostic function operates only during the Switch boot up (when the Switch is first
powered on).
The Cable Diagnostic first scans the five Ethernet ports to determine if the Ethernet cable is in
good working order. This process is indicated by the Speed LED blinking green for each of the five
ports, sequentially. The initial port scan takes about 10 seconds. If a cable fault is detected, it is
indicated by the corresponding port’s Speed LED glowing amber for 5 seconds, after the initial
port scan. The Switch is then reset for normal operation. It takes about 2 seconds for the Switch to
reset. The entire Cable Diagnostic process takes about 17 seconds from the time the Switch is
booted. So, from the time power is first applied to the Switch, about 17 seconds is required before
the Switch will begin normal operation.
Note: There is no display of cable faults detected by the Cable Diagnostic during the normal
operation of the Switch, only when the Switch is booted up or power-cycled.
NOTE: The Cable Diagnostic function does not support 10M/100M. If the port is
connected to a 10M/100M device, see the Link LED to check if the cable is good
or not.
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