Accton Technology ES3002-TF manual Making Fiber Optic Connections, Description

Fast SwitcHub-2se User’s Guide

Making Fiber Optic Connections

1.Prepare a pair of fiber-optic cables with SC or ST type connectors at both ends.

SC-Type Connector ST-Type Connector

2.If you are making a connection to a server or workstation, be sure it that has a properly installed 100BASE-FX network interface card. Connect the Rx/Tx jacks on the target device to the Tx/Rx jacks on the switch.

Distance Limit and Power Loss in Fiber Optics - When using fiber optic cabling,

the maximum length between two switches can be up to 2 kilometers. However, you must consider power loss when calculating the actual length of cable that can be used with your system. You can calculate power loss with the following formula:

m = (p dB - i dB) c dB/km

Variable

m

pdB i dB

c dB/km

Description

cable length (kilometers)

power budget

intervening devices

(e.g., patch cables and splices)

loss per kilometer of cable

Note: To determine the power loss incurred by intervening devices and specific cable type, inquire with the manufacturer. The power budget depends on the gauge of cable as shown below.

Gauge of Fiber Cable

50/125 mm

62.5/125 mm

Power Budget

9.2dB 13 dB

Setup and Configuration 2-3