ProSwitch Quad-Series Fiber Switches
Installation and User Guide
Page 22
5.2.2 QPM-MSC 100Mbps multimode FX-SC Quad-port, “snap-in” connector
The ProSwitch QPM-MSC is a multimode 100Mbps fiber optic
transceiver module, similar to the QPM-MST. It has the same LEDs indicating
port activity (ACT), Link (LK), and FDX or HDX operation, and the same
faceplate lettering.
While the functionality of these two modules is essentially the same, the
QPM-MSC is equipped with an SC-type "snap-in" connector instead of an ST-
type.
5.2.3 QPM-SSC
100Mbps
singlemode FX-SC-type, “snap-in” connector
The ProSwitch QPM-SSC is a singlemode 100Mbps fiber optic
module equipped with a dual SC-type connector. It functions as a fiber optic
transceiver to the Quad-Switches, supporting four singlemode fiber network
segments.
The QPM-SSC, when installed in a ProSwitch Quad-Series fiber
switch operating at 100Mbps full-duplex, supports singlemode fiber cable
lengths of as much as 25+ Km (see Power Budget, Section 4.5)
Each port has an Activity (ACT) LED indicating packets being
received, a Link (LK) LED that indicates proper connectivity with the remote
device when lit, and a FDX/HDX LED to indicate full-duplex mode when lit
(or half-duplex when off). To distinguish the singlemode QPM-SSC from the
multimode QPM-MSC, the label “Sgl. M.” is at the top of the faceplate of the
QPM-SSC.
5.2.4 QPM-MTRJ, 100Mbps multimode FX Quad-Port, MTRJ small-form-factor
ProSwitch QPM-MTRJ is a multimode fiber optic quad-port module
equipped with a small-form-factor MTRJ-type connector. It looks almost like
an RJ45 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 a Quad-Series Fiber Switch, it
supports fiber optic cable distances up the IEEE-standard 100Mbps
distance limits, i.e., typically 2km at full-duplex and 412m at half-duplex.
The functionality of this 100BASE-FX multimode QPM is essentially
the same as the ST and SC-types. It has the same LEDs per port indicating
port activity (ACT), Link (LK), and FDX or HDX operation. 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 QPM-MV45, 100Mbps multimode FX Quad-Port VF45 small-form factor
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
“small-form-factor”
ACT
1
2
3
4
LK
FDX/HDX
1
ACTIVITY
LINK
2
100BASE-FX MTRJ
Connectors
1
2
3
FULL/HALF
DUPLEX MODE
3
1 2 3 4
ProSwitch Quad-Series Fiber Switches
Installation and User Guide
Page 23
ProSwitch QPM-MV45 is a quad-port multimode fiber FX “small-form-factor” VF45 connector
used primarily in 100Mbps fiber-to-the-desktop links. Its size is similar to the MT-RJ port, but the VF45
shell is slightly larger. When not in use, its appearance is distinctive
because it has a tiny-hinged door over the porthole to act as a dust cover.
When installed in a Quad-Series Fiber Switch, it supports fiber optic
cable distances up the IEEE-standard 100Mbps distance limits, i.e.,
typically 2km at full duplex and 412m at half-duplex.
The small size of the VF45, about the same as an port, reduces the
size of wiring panels in wiring closets while providing the advantage of
“future-proof” fiber optic technology.
The cable end is a “plug-in” connector, with both fiber strands
terminated in one housing that cannot be improperly inserted. Each port has
an Activity (ACT) LED indicating packets being received, a Link (LK) LED
that indicates proper connectivity with the remote device when lit, and a
FDX/HDX LED to indicate full-duplex mode when lit (or half-duplex when
off).
5.2.6 QPM- (Twisted Pair), 10/100Mbps TP Quad-Port
The QPM- module supports Ethernet twisted pair segments
of any standard length. It is equipped with a four-port connector, and
offers 10/100 full / half-duplex auto-negotiating capability on each
port. The connector is shielded to minimize emissions and will allow
both unshielded twisted pair (UTP) and shielded twisted pair (STP)
cable connections.
The QPM- quad-port module is equipped with a Media
Dependent Interface-Crossover (MDI-X) push-button to allow for one
cascaded connection. This feature eliminates the need for a special
twisted pair crossover cable when connecting to a hub or another
switch.
With the push-button in the IN (X) position, the left-most port is used for cascaded and up-link
connections (i.e.: a connection to another hub or switch typically). When used for segments going to
workstations and other user node device connections, the MDI-X push-button should be in the OUT (=)
position.
Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that
indicates proper connectivity with the remote device when lit, a FDX/HDX LED to indicate full-duplex
mode when lit (or half-duplex when off), and a “speed” LED indicating 100Mbps when lit (or 10Mbps
when off).
Important Note:
For the QPM- Crossover Push-button -
OUT
for workstations and user node connections.
IN
for Up-Link connections to other hubs, switches, etc.
The RJ45 pins normally (TP crossover push-button DOWN) are per the standard for hubs-to-
users twisted pair wiring: 1 = , 2 = receive-, 3 = t, 6 = transmit-, other pins not
used. When the TP crossover push-button is UP, the pins of the RJ45 port are per the standard
for up-links using twisted pair wiring, i.e., the transmit and the receive pairs are exchanged: 1 =
t, 2 = transmit-, 3 = , 6 = receive-, other pins not used.
100BASE-FX MV45
Connectors
“small-form-factor”
1
ACTIVITY
LINK
2
FULL/HALF
DUPLEX MODE
ACT
LK
FDX/HDX
1
2
3
1
2
3
4
3
10/100BASE-T, Quad Port
RJ-45 Connectors
4
FULL/HALF
DUPLEX MODE
1
ACTIVITY
LINK
2
1
2
4
3
Cross-Over
Push Switch
100/10
FDX/HDX
LK
x
ACT
3
SPEED
1 2 3 4
