Black Box LE6601C, LE6602C, LE6603C, LE6604C, LE6605C Installation Manual
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PC Media Converters
Installation Guide
LE6601C LE6602C LE6603C LE6604C LE6605C
LE6606C LE6607C LE6608C LE6609C
PC Media Converter™ is a fixed-configuration, IEEE 802.3 singleconversion PC Media Converter Adapter that is designed to convert
RJ-45 (10Base-T twisted pair), BNC (10Base-2 thin coax), ST or SC
(10Base-FL 850 nm multi-mode, 1300 nm multi-mode or single-mode)
fiber. PC Media Converter can be mounted in any PC with a standard
ISA or PCI slot. All versions of PC Media Converters include diagnostic
LEDs for each port and a 4-pin peripheral power supply connector.
The following PC Media Converter versions are available:
UTP/FO — 10Base-T twisted pair/10Base-FL 850 nm multi-mode
fiber; includes one RJ-45 connector and one pair ST
(LE6601C) or SC (LE6602C) connectors
UTP/FO 1300 — 10Base-T twisted pair/10Base-FL 1300 nm multi-
mode fiber; includes one RJ-45 connector and one pair
ST (LE6603C) or SC (LE6604C) connectors
UTP/FO-SingleMode — 10Base-T twisted pair/10Base-FL 1300 nm
single-mode fiber; includes one RJ-45 connector and one
pair ST (LE6605C) or SC (LE6606C) connectors
UTP/FO-SingleMode/PLUS — same as above with higher power
budget; includes one pair ST (LE6607C) or SC (LE6608C)
connectors
UTP/BNC — 10Base-T twisted pair/10Base-2 thin coaxial; includes
one RJ-45 connector and one BNC connector (LE6609C)
Installing PC Media Converter
To install PC Media Converter, turn off the power on your PC and
remove the cover. Find an empty ISA or PCI slot and align PC Media
Converter in the slot. Then
mount PC Media Converter by
screwing its bracket to the
computer casing.
NOTE: PC Media Conver ter does
not plug into the mother board.
Also, make sure PC Media
Converter does not extend past
the edge of your case.
Attach the keyed mini-power
connector to PC Media
Converter. Attach the male end of the “Y” connector to a standard size
power connector in your computer. Replace the cover. Attach the
cables between PC Media Converter and the devices that
will be
interconnected
.
NOTE: PC Media Converter only needs power from the computer; no
additional power source is necessary.
After installation, you can configure PC Media Converter for the
following features, depending on the requirements of your installation:
• Crossover/pass-through connection on the twisted pair port
• BNC Port Termintation
• FiberAlert
• LinkLoss
Twisted Pair Crossover/Pass-Through Switch
Each twisted pair port on PC Media Converter has one RJ-45 connector
for a single shielded or unshielded twisted pair link segment, and features
a push-button, located next to the TP connector, for selecting a crossover
workstation connection or pass-through repeater/hub connection. To
select a pass-through connection, simply press the push-button IN. A
crossover connection is selected when the push-button is OUT.
BNC Port Termination
PC Media Converter UTP/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 PC Media Converter UTP/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 toggle is in the left position.
If a thin Ethernet segment is to be terminated at the PC Media
Converter UTP/BNC, attach the cable directly to the BNC connector and
set the termination to ON (enabled – factory default). Toggle the switch
to the ON position to enable termination.
Troubleshooting with LinkLoss and FiberAlert
LinkLoss and FiberAlert are advanced troubleshooting features that can
help you use your PC Media Converter to locate “silent failures” on your
network. It is vital that you understand exactly how FiberAlert and
LinkLoss work and how they will react in your network configuration
before attempting to use your PC Media Converter.
1
2
Enabling and Using FiberAlert and LinkLoss
FiberAlert and LinkLoss are configured on PC Media Converter by
adjusting a two-position switch located on the faceplate, next to the fiber
connectors. The switch for LinkLoss is labeled “LL.” The switch for
FiberAlert is labeled “FA.” Enable LinkLoss or FiberAlert by moving the
corresponding switch to the up (ON) position. Disable either (default) by
moving the switch to the down (OFF) position.
In a central site to remote site media conversion, the manufacturer
recommends you enable your PC Media Converters’ troubleshooting
features as follows: FiberAlert on the remote site only, and LinkLoss on
both the central and remote site. This will ensure that most faults can be
detected by an administrator located at the central site, no matter where
they occur on the network.
Installation Troubleshooting
• During installation, first test your 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.
• To test PC Media Converter by itself, you must have an
appropriate fiber patch cable. First, connect PC Media Converter
to the twisted pair device with a twisted pair cable. Next, loop a
single strand of fiber from the transmit port to the receive port of
your media converter. Finally, verify that you have both twisted
pair and fiber link on your PC Media Converter.
• Make sure that you are using the appropriate twisted pair cable
or have the crossover/pass-through button on the PC Media
Converter set correctly.
LED Operation
PC Media Converter features diagnostic LEDs. LED functions on PC
Media Converter TX/FX and PC Media Converter UTP/FO are:
FX RCV Flickers amber when fiber port is receiving data
TX LNK Glows green when a twisted pair link is established
FA Glows green when FiberAlert is enabled
FX LNK Glows green when a fiber link is established
TPRCV
BNCRCV
TPLNK
BNCCOL
TERM
OFF ON
10 Mbps
BNC
Termination
switch
Thin
port
Coaxial
LEDs
Crossover/
pass-through
switch
Twisted Pair
port
X II
XMT
RCV
FORCV
FOLNK
TPLNK
FA
10 Mbps
Crossover/
pass-through
switch
Twisted Pair
port
LEDs
Fiber Optic
port
X II
LL FA
FiberAlert
LinkLoss
and
switches
4
Installing modules without understanding the effects of
LinkLoss and FiberAlert can cause perfectly funcitoning units
to apear flawed or even dead!
If you are unfamiliar with LinkLoss and FiberAlert, the manufacturer
strongly encourages you to read the following information.
About Link Integrity
During normal operation, link integrity pulses are transmitted by all
point-to-point Ethernet devices. When a PC 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
PC Media Converter also sends out link pulses from its copper and fiber
transmitters, but normally has no way of knowing whether the cable to
the other device is intact and the link pulses are reaching the other end.
The combination of FiberAlert and LinkLoss allows this information to be
obtained, even when physical access to a remote device (and its link
integrity LED) is not available.
What Is FiberAlert?
FiberAlert lets you know when a
fault occurs on your fiber loop by
stopping data transmissions and
affecting fiber LEDs on both sides of
your network. If a media converter
is not receiving a fiberlink, FiberAlert
disables the media converter's fiber
transmitter, thus mirroring the link
status of the opposite end of the fiber. Both fiber link LEDs on either
end of the link should extinguish, alerting you to the fault.
Using FiberAlert, a local site administrator is notified of a fault and
can quickly determine where a cable fault is located without having
to go to the remote site.
NOTE: FiberAlert should only be enabled on one side of a media
conversion. Enabling it on both sides would keep both
transmitters off indefinitely.
What Is LinkLoss?
LinkLoss functions much like FiberAlert in that faults on one port are
mirrored on the other. In the case of LinkLoss, however, a fault on the
fiber port is passed to the Ethernet twisted pair port. If a PC Media
Converter is not receiving a fiber link, LinkLoss disables the transmitter
on the PC Media Converter's twisted pair port. This results in a loss of
link on the remote twisted pair device.
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Cable Break
XMT
RCV
Remote Site
Local Site
LED OFF = Broken Link
Black Box product with enabled —
Remote Site stops transmitting
Local Link LED is OFF indicating a break in the fiber loop
FiberAlert
X
LED
XMT
RCV
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