Black Box Mixed-Media Fiber Hubs
Installation and User Guide (4/99)
5.2.3b
LE8055C-SMST, 10 Mbps single-mode FL-ST-type, “twist-lock” connector
The LE8055C-SMST is a single-mode 10 Mbps fiber optic module equipped with a dual ST-
type connector. To distinguish the single-mode LE8055C-SMST from the multi-mode
LE8055C-ST, the label “Sgl. M.” is at the top of the faceplate of the LE8055C-SMST.
5.2.4
LE8053C-MTRJ, 100Mbps multi-mode FX, MTRJ small-form-factor connector
LE8053C-MTRJ is a multi-mode fiber optic module equipped with a small-form-
factor MTRJ-type connector. It looks almost like an RJ-45 port, but it is black in color The
MT-RJ’s small size and ease of connection
make it a good choice for 100Mbps “fiber-to-
the-desktop” Ethernet connectivity. When
installed in an LH8050A half-duplex hub, it
supports fiber optic cable distances only up
the 100Mbps shared-collision-domain
distance limits, i.e., typically 200 meters.
41
The functionality of this
100BASE-FX multi-mode FPM is same as
the ST and SC-types, and it is equipped with
the same ACTIVITY (A) and LINK (L) LEDs to indicate proper connectivity with the remote
device. It has the same “100Mbps FX” lettering on the faceplate. Note that the other end of
the fiber cable may have a different connector, not necessarily an MT-RJ type.
5.2.5
LH8053C-VF45, 100Mbps multi-mode FX, VF-45 small-form-factor connector
LE8053C-VF45 is a multi-mode fiber FX
“small-form-factor” VF-45 connector used primarily
in 100Mbps fiber-to-the-desktop links. Its size is
similar to the MT-RJ port, but the VF-45 shell is
slightly larger. When not in use, its appearance is
distinctive because it has a tiny hinged door over the
port hole to act as a dust cover.
When installed in an LH8050A half-duplex
hub, it supports fiber optic cable distances only up
the 100Mbps shared-collision-domain distance limits, i.e., typically 200 meters.
A L
100BASE-FX MT-RJ
Connector
1
2
1
ACTIVITY
2
LINK
“small-form-factor”
2
1
1
ACTIVITY
2
LINK
LINK
100BASE-FX M V-45
Connector
“small-form-factor”
A L
