9
Converting Single/Multi-Mode Fiber Optic
The illustrations below show three typical cabling configurations — (1) a
single-mode connection between an 850nm multi-mode fiber device and a
1300 nm single-mode fiber device, (2) a single-mode connection between
two 850nm multi-mode fiber devices and (3) a single-mode connection
between two OC-3 multi-mode fiber devices.
LED Functions on Media Conversion Modules
Media conversion modules feature diagnostic LEDs that provide
information to help determine where failures reside when they occur in
your network.
LEDs on 10-BT (RJ-45) - 10BFL and 100B TX - 10B FX Modules
The LED locations and functions are virtually the same on
10-BT (RJ-45) -
10BFL Modules
and
100B TX - 100B FX Modules.
The following diagram
shows the LEDs on
10-BT (RJ-45) - 10BFL Modul
es
.
The Fiber Link LED glows green when a link is established with the fiber
optic port. The function of the LED next to the Fiber Link LED depends on
whether
FiberAlert
is enabled. If
FiberAlert
is disabled, this LED functions as
an Activity LED and flickers amber when activity is detected on the fiber
port. If
FiberAlert
is enabled, this LED glows amber upon power up, then
flickers when activity is detected on the fiber port. The Twisted Pair Link
LED glows green when a link is established with the twisted pair port. The
Twisted Pair Activity LED flickers amber when activity is detected on the
twisted pair port.
NOTE: On 100 Mbps Modules, the Fiber Activity LED does not reflect whether
FiberAlert is enabled; this LED functions only as an Activity LED.
LEDs on 10BT (RJ-45) - 10B2 Modules
The following diagram shows the LEDs on
10BT (RJ-45) - 10B2 Modules:
The Twisted Pair Link LED glows green when a link is established with the
twisted pair port.
LEDs on 10B2 - 10B FL Modules
The following diagram shows the LEDs on
10B2 - 10B FL Modules
.
The Fiber Link LED glows green when a link is established with the fiber
optic port.
Twisted Pair Link LED
Activity LED
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