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Fast Fiber to Fiber Media Converter – Installation Guide 9
Troubleshooting
General
• Ensure power is supplied to the media converter – use of the
supplied power adapters is highly recommended.
• Ensure both devices on either end of the fiber are compatible.
If using a simplex 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 working
condition.
• For duplex fiber connections, ensure the RX and TX has been
reversed between the two 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) Set the Link mode to Standard (SW1 – Down) on both media
converters. Leave all other switches in the Up position.
2) Connect the near end device to port MM1, the LK1 LED
should be lit to indicate a good fiber connection. If the LK1
LED is not lit, then check the fiber cable and the attached
device.
3) Repeat step 2 for port MM2/SM2.
4) Return units to desired configuration.
Method 2:
The fiber connection can also be verified by configuring the remote
media converter for loopback mode. The link 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 back through the fiber.