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Gigabit Media Converter – Installation Guide
12
Troubleshooting
General
• Ensure power is supplied to the media converter – use of the
supplied power adapter is highly recommended.
• Ensure both devices on either end of the fiber are compatible.
If using a single fiber connection, ensure that you have both
an Upstream (U) and Downstream (D) media converter.
• Ensure all cabling is of the correct type and is in good
operating condition.
• For dual-stranded fiber connections, ensure the RX and TX
has been reversed between the 2 media converters.
No connectivity
If unable to get full connectivity with all DIP switches in the UP
position, this procedure is recommended for troubleshooting.
Method 1
1. Turn off Fiber Negotiation (SW1 Down) on both media
converters. Leave all other switches UP.
2. Connect the near end device to the copper connection. The
LKC LED indicates good copper connection. If the LKC LED is
not lit, then check the copper cable and the attached device.
3. Repeat for the far end device.
4. Connect the fiber cable to both media converters. The LKF
LED indicates good fiber connection. If no LKF LED then
check the fiber cabling.
5. Return units to desired configuration.
Method 2:
The fiber connection can also be verified by configuring the remote
media converter for loopback mode. The LKF LEDs on both media
converters should be lit. Data should pass through the local
converter, over the fiber connection to the remote media
converter. At the remote media converter, the data will be looped
back and passed through the fiber, once again, to pass through
the local converter to the copper link.