12
13
Rear View
The rear panel of the Gigabit Ethernet Media Converter indicates
one DC jack, which accepts input power with 5V DC 2A.
5V DC
Figure 7:
One DC jack for DC power input.
Note
The device is a power-required device, it means,
it will not work till it is powered. If your networks
should be active all the time, please consider
using a UPS (Uninterrupted Power Supply) for your
device. It will prevent you from network data loss
or network downtime.
In some areas, installing a surge suppression
device may also help to protect your Gigabit
Ethernet Media Converter from being damaged by
unregulated surge or current to the converter or
the power adapter.
4. LINK FAULT PASS THROUGH (LFP)
The LFP function includes the Link Fault Pass Through
function (LLCF/LLR) and the DIP Switch design. LLCF/LLR can
immediately alert administrators about problems with the link
media and provide an ef
fi
cient solution to monitor the net. The
DIP Switch can disable or enable the LFP function.
With LLCF (Link Loss Carry Forward), when a device connected
to the converter loses the TP line link, the converter’s
fi
ber will
disconnect the link of transmit. With LLR (Link Loss Return),
when a device connected to the converter and loses the
fi
ber
line link, the converter’s
fi
ber will disconnect the link of transmit.
Both can immediately alert administrators about link media
problems and provide an ef
fi
cient solution to monitor the net.
Link Loss Carry Forward (LLCF)
The FCU-280x incorporates an LLCF function for troubleshooting
a remote connection. When LFP function is enabled, the FL/TP
ports do not transmit a link signal until they receive a link signal
from the opposite port.
The diagram below shows a typical network con
fi
guration with a
good link status using the FCU-280x for remote connectivity.
Media
Converter
Management
Station
Switch/Hub
w/SNMP
Management
Station
Media
Converter
Switch/Hub
w/SNMP
TP
TP
Fiber
Cable
LFP ON
LFP ON
l
LED lit = established link
°
LED unlit = no link
