Allied-telesis AT-2912T Manuel d'utilisateur télécharger pdf (Page 17)

Secure Ethernet Network Adapter Installation and User’s Guide

The difference between the two adapters is their cable length

requirements. The AT-2712FX/SC is designed for multimode operation

using cables of up to in 275 meters (902 feet) in length. The AT-2712LX20/

SC adapter is designed for single mode operation using cables of up to 10

kilometers (6.123 miles) in length. For more information about the cables,

see Table 3 on page 33.

AT-2712FX/SC and AT-2712LX20/SC Adapters Physical Descriptions

The faceplate on the AT-2712FX/SC and AT-2712LX20/SC adapters

provides two fiber optic connectors for attaching the adapter to a

compatible link partner. See Figure 2 for an illustration of the adapter’s

faceplate.

Both the AT-2712FX/SC and AT-2712LX20/SC adapters have one fiber

port and one LED, as shown in Figure 2 and described in Table 1.

Figure 2. AT-2712FX/SC Faceplate

Table 1. Fiber Optic Port 100 LED Status

State Description

Green The port is operating at 100 Mbps and has a valid

link.

Flashing The port is receiving or transmitting network packets

at 100 Mbps.

1484

100

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 99 100

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Allied-telesis AT-2912T Manuel d'utilisateur Page 17