Perle 10/100/1000 Media Converter Module – Installation Guide
15
Troubleshooting
General
•
Ensure that the Media Converter Module is securely seated in
the chassis.
•
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
order.
•
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 these methods are recommended for troubleshooting.
Method 1
1. If the Module is a CM-1110, set the Auto-Config jumper (J5) to
SW so that DIP switches are being read.
2. Set the Link mode to Standard (SW2 – Down) on both Media
Converters. Leave all other switches in the Up position.
3. 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.
Repeat for the far end Media Converter.
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 converters to their desired configuration.
Method 2:
Configure the remote Media Converter for loopback mode. The
LKF LEDs on both Media Converters Modules 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, back to
the local Media Converter Module and passed to the copper link.
