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About PoE Compact Media Converters
The
PoE Compact Media Converter
functions as a fiber-to-twisted pair media converter, as well as a Power Sourcing Equipment
(PSE), delivering power to a Powered Device
(PD) by using the UTP data cable. Deploying
a PoE Compact Media Converter supporting
the Power Over Ethernet standard is the solution for both extending the access point from
the network core as well as powering the
end-device at the access point.
PoE Compact Media Converters are fully
compliant with IEEE 802.3u 100 Mbps Fast
Ethernet and IEEE 802.3af Power over
Ethernet standards, and perform a single
conversion between 100Base-TX twisted
pair and 100Base-FX multi-mode or singlemode fiber.
The Hardened PoE Compact
Media Converter
is the same as the PoE
Compact Media Converter
but allows higher
operating and storage temperatures.
This manual includes installation and operation information for the following media converters:
PoE Compact Media Converters
LMC5125A PoE, TX/FX-MM1300-ST
LMC5126A PoE, TX/FX-MM1300-SC
LMC5128A PoE, TX/SX-MM850-ST
LMC5129A PoE, TX/SX-MM850-SC
LMC5130A PoE, TX/FX-SM1310/PLUS-ST
LMC5131A PoE, TX/FX-SM1310/PLUS-SC
LMC5154A PoE, TX/FX-SM1310/LONG-ST
LMC5155A PoE, TX/FX-SM1310/LONG-SC
LMC5156A PoE, TX/FX-SM1550/LONG-SC
LMC5142A PoE, TX/SSFX-SM1310-SC (1310xmt/1550rcv)
LMC5143A PoE, TX/SSFX-SM1550-SC (1550xmt/1310rcv)
LMC5146A PoE, TX/SSFX-SM1310/PLUS-SC (1310xmt/1550rcv)
LMC5147A PoE, TX/SSFX-SM1550/PLUS-SC (1550xmt/1310rcv)
LMC5150A PoE, TX/SSFX-SM1310/LONG-SC (1310xmt/1550rcv)
LMC5151A PoE, TX/SSFX-SM1550/LONG-SC (1550xmt/1310rcv)
QUICK START
Introduction 1
Configuration Instructions 2
About PoE and PSE 3
LinkLoss and FiberAlert 3
Auto-Negotiation 5
Crossover/Pass-Through 6
LED Operation 6
Troubleshooting 7
Technical Support 8
NOTE
All the PoE and Hardened PoE versions, including TX/FX, TX/SX and
TX/SSFX will be referred to as PoE
Compact Media Converter except
where differences need indication.
PoE Compact Media Converter
Installation Guide
LMC5125A - LMC5126A - LMC5128A - LMC5129A - LMC5130A
LMC5131A - LMC5154A - LMC5155A - LMC5156A - LMC5142A
LMC5143A - LMC5146A - LMC5147A - LMC5150A - LMC5151A
LMC5135A - LMC5136A - LMC5140A - LMC5141A - LMC5157A
LMC4144A - LMC5145A - LMC5148A - LMC5149A
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About Power Over Ethernet and PSE
The Power Over Ethernet technology allows the PoE Compact Media
Converter to be the Power Source Equipment (PSE) by distributing an electri-
cal current across existing copper data cabling. If the connected unit requires
power and is 802.3af compliant, the PSE detects it and supplies power. LEDs
on the PoE Compact Media Converter indicate the amount of power being
supplied to the Powered Device (PD) as well as if the PoE Compact Media
Converter is over temperature or over current or has an open circuit (see page
6). PSE functionality is enabled as default; the PSE switch is set to ON.
NOTE: Although the PoE Compact Media Converter auto-detects PDs, and only supplies
power when connected to an 802.3af compliant PD, Black Box recommends setting the PSE
switch to OFF when connecting to a non-802.3af compliant device.
About FiberAlert and LinkLoss
The PoE Compact Media Converter comes with the following troubleshoot-
ing features:
• FX LinkLoss
• TX LinkLoss
• FiberAlert (including Pulsing FiberAlert)
LinkLoss and FiberAlert are advanced troubleshooting features that can help
you locate "silent failures" on your network. However, it is vital that you understand exactly how FiberAlert and LinkLoss work, and how they will react in
your network configuration, before attempting to install the enclosed
module(s).
Installing modules without understanding the effects of LinkLoss
and FiberAlert can cause perfectly functioning units to appear
flawed or even dead.
If you are unfamiliar with LinkLoss and FiberAlert, Black Box strongly
encourages you to read the following information. Contact Black Box technical support at 877-877-BBOX (outside U.S. call 724-746-5500) for more information/assistance.
A BOUT L INK I NTEGRITY
During normal operation, link integrity pulses are transmitted by all pointto-point Ethernet devices. When an Black Box media converter receives valid
link pulses, it knows that the device to which it is connected is up and sending pulses, and that the copper or fiber cable coming from that device is intact.
The appropriate “LINK” LED is lit to indicate this. The Black Box media converter also sends out link pulses from its copper and fiber transmitters, but nor-
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W HAT I S P ULSING F IBERA LERT?
Use Pulsing FiberAlert in the following two situations:
A) When connecting two PoE Compact Media Converters (or con-
necting a PoE Compact Media Converter to a Black Box 100 Mbps
modular media converter) with FiberAlert enabled.
B) When connecting one PoE Compact Media Converter with
FiberAlert enabled and one Black Box Media Converter with Link Fault
Detection (LFD) enabled.
NOTE: Pulsing FiberAlert may be useful when connecting PoE Compact Media Converter to
another manufacturer’s product that has a similar feature to FiberAlert.
NOTE: Please refer to the Installation Guide for the appropriate Black Box product for more
information on LFD.
Auto-Negotiation on
PoE Compact Media Converter
PoE Compact Media Converters include Auto-Negotiation. When Auto-
Negotiation is enabled (default), the media converter negotiates as a 100 Mbps
Full-Duplex device; if the device the PoE Compact Media Converter is connect-
ed to can operate at 100 Mbps Full-Duplex, a link will be established.
If the twisted pair port on the other device does not have the ability to auto-
negotiate, or if a 100 Mbps Half-Duplex connection is desired, Auto-
Converter 1 Converter 2
FiberAlert Enabled FiberAlert and Pulsing FiberAlert Enabled
FiberAlert Enabled FiberAlert Disabled
NOTE
FiberAlert
is not available/applicable on single-strand fiber versions of
PoE Compact Media Con verter.
I
NSTALLATION TIP!
Enable
FiberAlert
on only ONE side of a media conversion; enabling it on both
sides will keep both transmitters off indefinitely. If you want to enable
FiberAlert
on BOTH sides of the conversion, you MUST also enable
Pulsing FiberAlert
on
one unit. Black Box recommends enabling
Pusling FiberAlert
on ONE side (see
page 5).
L INKL OSS/FIBERA LERT C OMPARISON T ABLE
Feature Fault Location Disabled LEDs Enable At:
FX LinkLoss Fiber Twisted Pair Main Site Only
TX LinkLoss Twisted Pair Fiber Remote Site Only
FiberAlert Fiber Fiber Remote Site Only
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ZERO CRNT
Glows red when there is no device connected to the
PoE Compact Media Converter. Glows red when the
device connected to the PoE Compact Media Converter is
NOT a valid PD. The LED is OFF when the PoE
Compact Media Converter detects a valid PD.
OVER CRNT
Glows red when an overcurrent condition lasts for
more than 60 ms after power up and/or glows red when
an over temperature condition occurs.
PWR FAIL
Glows red when an overcurrent or internal fault is detect-
ed within the PoE Compact Media Converter PoE circuit.
PWR
Glows green when the PoE Compact Media Converter has
power (i.e. when the unit is plugged in).
AN
Glows green when Auto-Negotiation is enabled.
TX LL
Glows green when TX LinkLoss is enabled.
FX LL
Glows green when FX LinkLoss is enabled.
FA
Glows green when FiberAlert is enabled. Blinks green when
a FiberAlert situation occurs (i.e. the loss of one strand of fiber).
4W
Glows green when Powered Device consumes 3.84 watts
to 4 watts of power (CLASS1 PD).
7W
Glows green when Powered Device consumes 6.49 watts
to 7 watts of power (CLASS2 PD).
15.4W
Glows green when Powered Device consumes 12.95
watts to 15.4 watts of power (CLASS0 PD).
FX LNK/ACT
Glows green when link is established on the fiber port;
blinks green when activity is detected on the port.
Installation Troubleshooting
• During installation, first test the fiber and twisted pair connections
with all troubleshooting features disabled, then enable these features, if desired, just before final installation. This will reduce the
features’ interference with testing.
• When working with units where the features cannot be disabled,
you must establish BOTH your twisted pair and fiber connections
before the link LEDs will light!
• To test a media converter by itself, first make sure you have an
appropriate fiber patch cable, then follow these steps to test:
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W ARRANTY
Contact Black Box for warranty information.
F
IBER O PTIC C LEANING G UIDELINES
Fiber Optic transmitters and receivers are extremely susceptible to contamination by particles of dirt or dust, which can obstruct the optic path and
cause performance degradation. Good system performance requires clean
optics and connector ferrules.
1) Use fiber patch cords (or connectors, if you terminate your own
fiber) only from a reputable supplier; low-quality components can
cause many hard-to-diagnose problems in an installation.
2) Black Box installs dust caps to ensure factory-clean optical devices.
These protective caps should not be removed until the moment of
connecting the fiber cable to the device. Assure that the fiber is properly terminated, polished and free as much dust or dirt, and that the
location is as free from dust and dirt as possible.
3) Store spare caps in a dust-free environment such as a sealed plastic
bag or box so that when reinstalled they do not introduce any contamination to the optics.
4) Should it be necessary to disconnect the fiber device, reinstall the
protective dust caps.
5) If you suspect that the optics have been contaminated, alternate
between blasting with clean, dry, compressed air and flushing with
isopropyl alcohol to remove particles of dirt.
E
LECTROSTATIC D ISCHARGE P RECAUTIONS
Electrostatic discharge (ESD) can cause damage to your add-in modules.
Always observe the following precautions when installing or handling an addin module or any board assembly.
1) Do not remove unit from its protective packaging until you’re ready to
install it.
2) Wear an ESD wrist grounding strap before handling any module or
component. If you do not have a wrist strap, maintain grounded contact with the system unit throughout any procedure requiring ESD
protection.
WARNING! Integrated circuits and fiber optic components are extremely susceptible
to electrostatic discharge damage. Do not handle these components directly unless
you are a qualified service technician and use tools and techniques that conform to
accepted industry practices.
3) Hold boards by the edges only; do not touch the electronic components
or gold connectors.
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NOTES:
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