Instruction manual
Configuring Compact Media Converter
Once installed, configure Compact Media Converter TP/FO for the following:
• A crossover or pass-through connection for the twisted pair port
• Pulsing FiberAlert
Once installed, configure Compact Media Converter TP/BNC for the following:
• A crossover or pass-through connection for the twisted pair port
• BNC port termination (default = Enabled)
Twisted Pair Crossover/Pass-Through Switch
The twisted pair port on 10 Mbps Compact Media Converters features a push-
button switch, located next to the twisted pair connector, for selecting a
crossover workstation connection or pass-through repeater/hub connection.
Select a pass-through connection by pressing the push-button IN. A
crossover connection is selected when the push-button is OUT. If uncertain
whether a crossover or pass-through connection is needed, set the push-but-
ton to the position that makes the TP LNK (link) LED glow.
BNC Port Termination
Compact Media Converter TP/BNC features a 2-position switch next to the
BNC connector that allows a thin coaxial segment to be terminated at the port
without an additional ‘T’ connector and terminator.
If Compact Media Converter TP/BNC is attached
to a mid-point of a thin Ethernet segment, attach
a ‘T’ connector to the BNC port. Termination
must be OFF (disabled). Termination is disabled
when the switch is in the left position. If a thin
Ethernet segment is to be terminated at the
Compact Media Converter TP/BNC, attach the
cable directly to the BNC connector and set the
termination switch to ON (enabled – factory
default) by moving the switch to the right position.
LinkLoss and Pulsing FiberAlert
LinkLoss and Pulsing FiberAlert are advanced troubleshooting features from
Black Box that can help you locate “silent failures” on your network.
It is vital that you understand exactly how Pulsing FiberAlert and LinkLoss
work and how they will react in your network configuration before attempt-
ing to install the enclosed unit.
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F IBER O PTIC C LEANING G UIDELINES
Fiber Optic transmitters and receivers are extremely susceptible to contamination by par-
ticles 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 prob-
lems in an installation.
2) Black Box installs dust caps to ensure factory-clean optical devices. Do not be
remove these protective caps until the moment of connecting the fiber cable to the
device. Assure that the fiber is properly terminated, polished and free of any 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 parti-
cles 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 add-in 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 con-
nectors.
4) After removal, always place the boards on a grounded, static-free surface, ESD pad or
in a proper ESD bag. Do not slide the board over any surface.
W ARRANTY
Contact Black Box for warranty information.
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