6
Configuring LinkLoss and FiberAlert
iMcV-PIM and iMcV-LIM Modules ship from the factory with troubleshooting
features disabled. See the configuration instructions in this manual for
instructions on enabling FiberAlert and LinkLoss.
Twisted Pair Cable Type
The twisted pair port on iMcV-McPIMs features a jumper, located at position JP6,
for selecting either a shielded or unshielded twisted pair link segment. The
factory default is unshielded twisted pair with the jumper shunt on pins 1-2.
Place the jumper shunt over pins 2-3 to select a shielded twisted pair link
segment.
NOTE
This jumper is not found on -20 iMcV-McPIM boards.
Twisted Pair Crossover/Straight-Through Connections
iMcV Modules support both crossover and straight-through CAT5 twisted pair
cabling types of connections by one of the following two methods:
AutoCross: iMcV-LIM Modules include AutoCross, a feature which automatically
selects between a crossover workstation or straight-through/repeater hub
connection depending on the connected device.
MDI/MDI-X Switch: iMcV-PIMs feature a push button switch, located next to the
RJ-45 connector, for selecting the type of connection. Select a straight-through
connection by pressing the push-button IN. The button should be in the OUT
position for a crossover connection. If unsure of the type of connection, set the
push button to a position that makes the twisted pair LNK (link) LED glow.
Auto-Negotiation on iMcV-LIM
iMcV-LIM Modules include the feature Auto-Negotiation. When Auto-
Negotiation is enabled, the module negotiates as a 100 Mbps Full-Duplex device;
if the device the iMcV-LIM is connected to can operate at 100 Mbps Full-Duplex,
a link will be established.
3
iMcV Module Jumper/Switch Configuration Chart
Module Feature Jumper/Switch
ON
OFF
Default
UTP
JP6
1-2
2-3
ON
FiberAlert
JP8
1-2
2-3
OFF
FO LinkLoss
JP9
1-2
2-3
OFF
iMcV-PIM
TP/FO
-40 Board
TP LinkLoss
JP7
1-2
2-3
OFF
FO LinkLoss
JP2
1-2
2-3
OFF
FiberAlert JP3
1-2
2-3
OFF
iMcV-PIM
TP/FO
-20 Board
TP LinkLoss
JP6
1-2
2-3
OFF
FX LinkLoss
JP2
1-2
2-3
OFF
TX LinkLoss
JP3
1-2
2-3
OFF
Auto-Negotiation
DIP Switch 1 on S1
see board
see board
ON
iMcV-LIM
TX/FX and
TX/SSFX
-30 Board
FiberAlert*
DIP Switch 2 on S1
see board
see board
OFF
FX LinkLoss
JP1
1-2
2-3
OFF
TX LinkLoss
JP2
1-2
2-3
OFF
Auto-Negotiation
DIP Switch 1 on S2
see board
see board
ON
iMcV-LIM
TX/FX
-20 Board
FiberAlert
DIP Switch 2 on S2
see board
see board
OFF
