StarTech.com ET91000SM40 User Manual

Gigabit Single Mode Media Converter (SC – 40km)
ET91000SM40
Introduction
Thank you for purchasing a StarTech.com Single-Mode WDM Media
Converter. This product offers a cost-effective method of bridging
two Ethernet networks using single-mode fiber optic cable, at dis-
tances up to 40km (24.85 miles).
Features
• Simple installation and use
• Supports full or half-duplex operating modes
• Supports link-loss forwarding, loop-back testing, remote monitor
status, two frame lengths

Before You Begin

System Requirements
• Fiber Cable
• 10Base-T; Cat 3, 4 or 5 or 100Base-Tx, Cat 5 or 6 cable
• Power source
Contents (per unit)
• Media Converter (1)
• 12V DC Power Adapter (1)
• Instruction manual (1)
Basic Setup
1. Connect the fiber interface cable to the A-Unit. Using UTP cable,
connect the ethernet connection to the RJ45 jack.
2. Set the Duplex switch (full/half) according to the specifications of
your equipment.
Media Converter Connections
The following example illustrates the connection scheme when
connecting from a 1000Base-TX port of one hub to a 1000Base-
SX/LX port of another hub, through the fiber converter:
RJ-45 to HUB
connection
1000BASE-TX
Fiber Connection
UTP Connection
Fiber Cable
The following example illustrates the connection scheme when con-
necting from a 1000Base-TX port of one hub to a 1000BASE-TX
Network Interface Card (NIC) in a computer through the fiber
converter:
1000BASE-TX
UTP Connection
Fiber Cable
Front Panel DIP Switch Settings
LLF
LBT
FULL HALF
1. Full/ Half:
The Fiber and UTP Duplex will be configured in Full-duplex or Half-
duplex. *This switch includes an "Auto Reset" function so the
power-reset is not necessary when any modification is made
here.
2. LBT - Loop-back test and get remote side status :
(OFF = Not Active, ON = Active) Please note: If the local side
loop-back test is active, then LEDs (except PWR) will all blink
rapidly and refresh to display the remote side status.
3. LLF - Link Loss Forwarding (OFF = Not active, On = Active)
LED Indicators
The following diagram and chart outline the meaning of each LED
located on the media converter(s):
LED
PWR Power Indicator
Full Mode display
Fiber Transceiver
connection FX
LBT Mode display
LLF Mode display
TX Ethernet Link
Link-Loss-Forwarding (LLF)
ET91000SM40 incorporates a Fiber Link Forwarding feature that
allows indirect sensing of a Fiber Link Loss via the 1000 Base-TX
UTP connection. Whenever the media device detects a Link Loss on
the Receive fiber (Fiber LNK OFF), it disables its UTP transmitter so
that a Link Loss condition will be sensed on the receive UTP port (as
depicted in the following diagram). The Link Loss can then be easily
monitored and reported at the remote UTP port's host equipment.
This feature has no effect on the media converter's UTP LNK LED,
which continues to function normally, independent of the state of the
Fiber LNK LED and the UTP transmitter. This feature enabled by
default.
Fiber Break Responses
Switch
or PC
Full
PWR
FX
TX
LLF
LBT
Function State Status
On Converter has power
Off Converter has no power
Blinking LB testing & Get CPE status function enabled
On Fiber side full duplex mode (200mbps)
Off Half-duplex mode
On The fiber link is ok
Fiber link Off No link, or the link is faulty
Blinking Receiving data on the fiber
Blinking LB testing & Get CPE status function enabled
Off LB testing & Get CPE status function disabled
On Link loss forwarding function enabled
Off Link loss forwarding function disabled
On The UTP link is ok
Off No link, or the link is faulty
Blinking Receiving data on Ethernet
UTP
TX RX
RX TX
(off)
TX
RX
(off) TX
RX
Fiber
Link
Link
Remote Fault
Fail
Fail
Cont'd on reverse
UTP
Switch
or PC