Allied-telesis AT-MC103ST/FSx Manuel d'utilisateur télécharger pdf (Page 29)

AT-MC100 Series Installation Guide

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 the end-node

and power ON the end-node.

3. Set the MDI/MDI-X button as follows:

❑ If you are connecting a workstation to the 100Base port, set the MDI/

MDI-X button to the MDI-X (OUT) position. MDI-X is the default

position.

❑ If you are connecting a hub or a switch to the 100Base port, set the

MDI/MDI-X switch to the MDI (IN) position.

4. 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.

5. Set the media converter to the LNK TST(OUT) position.

6. Power ON the media converter.

7. Verify that the LNK 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 “Returning Products” on

page xi for more information. You can also find RMA information by

accessing the Knowledge Base at http:\\kb.alliedtelesyn.com.

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Allied-telesis AT-MC103ST/FSx Manuel d'utilisateur Page 29