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Black Box Modular Switches
Installation and User Guide (8/99)
38
front of the module identifies it as “10 FL” to avoid confusion with other similar
-looking 100Mb
fiber QPMs.
5.2.2
LE1419C 100Mbps multi-mode FX-SC-4-port type, “snap-in” connector
The LE1419C is also a multi-mode 100Mbps
fiber optic transceiver module, similar to the LE1428C.
It has the same LEDs indicating port activity (ACT),
Link (LK), and FDX
.HDX operational, and the same
face
-plate lettering.
While the functionality of the these two
modules is the same, the LE1419C is equipped with an
SC
-type "snap-in" connector instead of an ST-type.
2.3
LE1421C 100Mbps single-mode FX-SC-type, “snap-in” connector
The LE1421C is a single-mode 100Mbps fiber optic module equipped with a dual SC-
type connector. It functions as a full fiber optic transceiver to the Modular
-Switches, supporting
four sing
le-mode fiber network segments.
TheLE1421C, when installed in a
LE14XXA
-Series Modular Switch operating at
100Mbps full
-duplex, supports single-mode fiber
cable lengths of as much as 25+ Km (see Power
Budget, Section 4.5)
Each port is equipped with an Activity
(ACT) LED, LINK(LK) LED, (10/100) Speed and
(HDX/FDX) Half or full Duplex mode identical to
those of the LE1419C. To distinguish the single
-
mode LE1421C from the multi
-mode LE1419C, the label “Sgl. M.” is at the top of the faceplate
of the LE1421C.
100BASE-FX Multi-Mode
SC Connectors
1
ACT
1
ACTIVITY
LINK
2
2
2
3
1
FDX/HDX
4
ACT
3
FULL/HALF
DUPLEX MODE
4
LK
1 2 3 4
3
ACT
1
ACTIVITY
LINK
2
100BASE-FX Single-Mode
SC Connectors
1
2
2
3
1
FDX/HDX
4
ACT
3
3
FULL/HALF
DUPLEX MODE
LK
1 2 3 4