Loopback test – Allied Telesis AT-MC104LH User Manual
Page 39
AT-MC10x Series Media Converters Installation Guide
29
Loopback Test
To check hardware reliability of the media converter, perform the
following procedure:
1. Power OFF the media converter by unplugging the power adapter
from the wall outlet and from the back of the unit.
2. Connect the RJ-45 twisted pair port to a 100Base port on an end-
node, such as an Ethernet switch, and power ON the end-node.
3. Using a tested and good fiber patch cable, attach the matching ends
of the fiber cable to the transmit (TX) and receive (RX) connectors of
the media converter.
4. Set the media converter to the LINK TST(OUT) position.
5. Power ON the media converter.
6. Verify that the LINK LED on both the twisted pair and fiber optic ports
are green.
If the LEDs are green, the unit is working properly and there is a
problem elsewhere on the segment.
If the LEDs are OFF, contact Allied Telesyn Technical Support for
a RMA number to replace the unit. Refer to “Contacting Allied
Telesyn” on page x for more information. You can also find RMA
information by accessing the Knowledge Base at
http:\\kb.alliedtelesyn.com.