C
HAPTER
4
| Making Network Connections
Fiber Optic SFP Devices
– 40 –
ES-3026/3026P
W
ARNING
:
These switches use lasers to transmit signals over fiber optic
cable. The lasers are compliant with the requirements of a Class 1 Laser
Product and are inherently eye safe in normal operation. However, you
should never look directly at a transmit port when it is powered on.
W
ARNING
:
When selecting a fiber SFP device, considering safety, please
make sure that it can function at a temperature that is not less than the
recommended maximum operational temperature of the product. You must
also use an approved Laser Class 1 SFP transceiver.
1.
Remove and keep the LC port’s rubber plug. When not connected to a
fiber cable, the rubber plug should be replaced to protect the optics.
2.
Check that the fiber terminators are clean. You can clean the cable
plugs by wiping them gently with a clean tissue or cotton ball
moistened with a little ethanol. Dirty fiber terminators on fiber optic
cables will impair the quality of the light transmitted through the cable
and lead to degraded performance on the port.
3.
Connect one end of the cable to the LC port on the switch and the other
end to the LC port on the other device. Since LC connectors are keyed,
the cable can be attached in only one orientation.
Figure 21: Making Fiber Port Connections
4.
As a connection is made, check the Link LED on the switch
corresponding to the port to be sure that the connection is valid.
The 1000BASE-SX, 1000BASE-LX, 1000BASE-LH fiber optic ports operate
at 1 Gbps, full duplex, with auto-negotiation of flow control. The maximum
length for fiber optic cable operating at Gigabit speed will depend on the
fiber type as listed under
