Black Box Mixed-Media Fiber Hubs
Installation and User Guide (4/99)
5.2.2a
LH8055C-SC, 10 Mbps multi-mode FL-SC-type, “snap-in” connector
The LE8055C-SC is a multi-mode 10 Mbps fiber optic module equipped with a dual
SC-type connector. It looks the same as the 100Mbps LH8051C-SC, but has lettering
“10Mbps ” on the front to distinguish it.
5.2.3
LH8051C-SMSC 100Mbps single-mode FX-SC-type, “snap-in” connector
The LH8051C-SMSC is a single-mode 100Mbps fiber optic module equipped with a
dual SC-type connector. It functions as a full fiber optic transceiver to support single-mode
fiber networks.
100BASE-FX, 10BASEFL sgl.mode
SC Connectors
The LH8051C-SMSC, when installed
in an LH8050A hub, supports fiber distances
the same as 100Mbps multi-mode ports
because of the 100Mbps collision domain
limitations, so it is only practical for use where
single-mode fiber cable is already installed and
must be used.
2
1
40
Note - to support long fiber distance
with the LH8050A, use either 10 Mbps
modules in front ports (which can go up to 2Km), or use a 100Mbps full-duplex SPM in the
bonus port which has no collision domain limits.
A L
The LH8051C-SMSC is equipped with an Activity (A) LED, and LINK(L) LEDs
identical to those of the LH8051C-SC. To distinguish the single-mode LH8051C-SMSC from
the multi-mode LH8051C-SC, the label “Sgl. M.” is at the top of the faceplate of the LH8051C-
SMSC.
5.2.3a
LE8055C-SMSC, 10 Mbps single-mode FL-SC-type, “snap-in” connector
The LE8055C-SMSC is a single-mode 10 Mbps fiber optic module equipped with a dual SC-
type connector. It looks the same as the 100Mbps LH8051C-SMSC, but has lettering
“10Mbps” on the front to distinguish it.
1
ACTIVITY
LINK
2
