Installation guide

AT-MC1x Series Installation Guide

If the LNK LED for the fiber optic port is ON, but there is a communication

problem between the end-nodes connected to the media converter (and you are

not running a Fiber Link Test), check the following:

q Check that the end-nodes connected to the ports are operating at 10

Mbps.

q Check that the end-nodes connected to the AT-MC13, AT-MC14, or

AT-MC16 are operating in the same duplex mode. These units can

operate in either full- or half-duplex mode.

q Check that the Fiber Link Test switch on the media converter is in the

DOWN position.

q Check that the maximum allowable loss budget for the fiber optic

cable has not been exceeded. Refer to Table 7 on page 14 for the fiber

optic port specifications.

If the NML LED on the AT-MC13, AT-MC14, or AT-MC16 is OFF, do the

following:

q Check that the end-nodes connected to the media converter are

powered ON.

q Check that the fiber optic cable is securely connected to the fiber optic

port.

q Verify that the appropriate fiber optic cable is being used. Refer to

Table 7 on page 14 and Table 8 on page 15 for the fiber optic cable

specifications.

q Verify that the maximum allowable loss budget for the fiber optic

cable has not been exceeded.

If you are still experiencing problems after troubleshooting the installation,

contact Allied Telesyn Technical Support for assistance. Refer to “Contacting

Allied Telesyn Technical Support” on page viii or visit our web site at