10/100 Autosensing
Media Converter™
Installation Guide
10/100 Autosensing Media Converter™ is a low-cost, standalone, IEEE
802.3 single-conversion media converter that is designed to convert
between:
10Base-T twisted pair and 10Base-FL single or multimode fiber;
or,
100Base-TX twisted pair and 100Base-SX multi-mode fiber; or
100Base-TX twisted pair and 100Base-FX single-mode fiber
10/100 Autosensing Media Converter is a 1U high, table-top unit that
includes diagnostic LEDs, a universal (100/240 VAC) power supply, one
RJ-45 connector for the twisted pair port and one pair of ST or SC
connectors for the fiber port.
Installing 10/100 Autosensing Media Converter
10/100 Autosensing Media Converter comes ready to install. The
only adjustments that may need to be made after installation are:
Configuring the unit for its mode of operation.
Setting the twisted pair port for a crossover workstation or passthrough repeater/hub connection.
To install 10/100 Autosensing Media Converter, first make sure that the
unit is placed on a suitable flat surface, and leave some space at the back
of the unit to accommodate the exhaust fan. Attach the cables between
the 10/100 Autosensing Media Converter and each device that will be
interconnected, then plug the unit into a reliable, filtered power source.
NOTE: All network cables must be connected for link LEDs to glow.
The following diagram shows the faceplate on 10/100 Autosensing
Media Converter. Regardless of the type of fiber connectors, the LEDs
remain the same. More information on the LEDs can be found later in
this guide.
Configuration Instructions
10/100 Autosensing Media Converter features
an 8-position Dip switch for configuring the
unit. This switch is accessed through a cut-out
in the bottom of the unit.
The following table provides simplified
definitions of the function of each switch.
More detailed information follows.
MODE
LFD
SWITCH
FUNCTION
S5
DEFAULT
Link Fault Detection (Refer to page 3 for configuration
instructions. Available only in Force modes)
PNP
S6
Plug-N-Play Mode
(Valid only when Force mode is disabled)
Force
S7
Force Mode — Forces Autosensing 10/100 to operate
at 10 or 100 Mbps as determined by S8
10/100
S8
When ON, Autosensing 10/100 operates at 10 Mbps
When OFF, Autosensing 10/100 operates at 100 Mbps
Note: S1 - S4 are factory configured — DO NOT CHANGE
OFF
ON
OFF
OFF
10/100 Autosensing Media Converter Modes of Operation
10/100 Autosensing Media Converter features three possible “modes” of
operation: PNP mode, Force-10 and Force-100. Your media converter
should be configured for one of these modes (factory default is PNP mode).
For information on Link Fault Detect, refer to page 3.
➤ PNP mode, also known as Auto-Negotiation, is the mode most
ideally suited for the 10/100 Autosensing Media Converter. In this mode,
the converter will optimally and automatically configure for speed (10 or
100 Mbps) depending on the capabilities of the end stations.
To enable PNP mode, set switch S6 to the ON position, with
switches S7 and S8 in the OFF position.
➤ In Force-10 mode, the 10/100 Autosensing Media Converter permits
the transmission of valid 10 Mbps traffic only. In this mode, the unit acts as
a 10Base-T/10Base-FL media converter, rejecting 100 Mbps signals.
To enable Force-10 mode, set switch S7 and S8 to the ON
position, with switch S6 in the OFF position.
➤ In Force-100 mode, the 10/100 Autosensing Media Converter
configures specifically as a 100Base-TX/100Base-SX multi-mode or a
100Base-TX/100Base-FX single-mode fiber media converter. Note that
Force-100 implies the rejection of 10 Mbps signals. There is no autonegotiation in Force-100 mode.
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2
To enable Force-100 mode, set switch S7 to the ON position, with
switches S6 and S8 in the OFF position.
AUTO -NEGOTIATION
AND
AUTOSENSING 10/100
When connecting two 10/100 Autosensing Media Converters between
two end stations (devices such as switches, hubs and repeaters), all devices
in the media conversion should ideally support, and be utilizing, AutoNegotiation functionality. While it is possible to have auto-negotiating
devices on one side of the media conversion and fixed (non-autonegotiating) devices on the other, link LEDs will react differently depending
on where a link fault occurs. Therefore, we recommend you:
A) Set every device in the media conversion for Auto-Negotiation,
or for installations where Auto-Negotiation is not possible from one end
of the media conversion to the other
B) Manually configure all devices for 10 Mbps or 100 Mbps connections
N O T E
The 10/100 Autosensing Media Converter cannot be manually set for
Half- or Full-Duplex. Duplex is determined by the devices to which the
10/100 Autosensing Media Converter is connected.
LINK FAULT DETECTION FEATURE
When the 10/100 Autosensing Media Converter is implemented into a
media conversion installation where the speed is forced (i.e. Force-10 or
Force-100 mode), the feature Link Fault Detection (LFD) is available. When
LFD is enabled and the input link is down at one interface to the 10/100
Autosensing Media Converter, the transmitter output on that interface is
turned off for about 425ms every 3.8 seconds (i.e. blinking). It applies to
both network interfaces and to both data rates. If the link at the other
interface to the Autosensing 10/100 is also down, there is no output. LFD
causes the Link Up indicator of the link partner to blink.
Link Fault Detection is only available in one of the two Force modes; it is
not available when using PNP mode. When in one of the Force modes,
configure this feature by adjusting DIP switch S5. Enable LFD by setting S5
to the ON position and disable (default) by setting S5 to the OFF. In order
for LFD to function properly, Force mode must be enabled by setting S6
and S7 to ON with either S8 ON for 10 Mbps or S8 OFF for 100
T W I S T E D P A I R C R O S S O V E R / P A S S -T H R O U G H S W I T C H
10/100 Autosensing Media Converters feature a crossover/pass-through
push-button switch, located on the faceplate next to the RJ-45 connector, to
set the twisted pair connection type (see page 1 for illustration of location).
Select a pass-through connection by pressing the push-button IN. A
crossover connection is selected when the push-button is OUT. If you are
not sure which connection is needed, set the push-button to whatever setting
makes the twisted pair LNK (link) LED glow.
OVERDRIVING SHORT DISTANCE INSTALLATIONS
If attempting to use a high powered device which is designed for long
distance installations, but you’re using the device for a short distance
installation, the fiber transmitters may overdrive the receivers and cause data
loss. If this is the case, you may need to add an optical attenuatior to your
connection. Please contact Technical Support for more information.
LED Indicators
10/100 Autosensing Media Converters feature several diagnostic LEDs
per port. The LED functions for 10/100 Autosensing Media Converter are:
TWISTED PAIR PORT
LNK
Glows green when a twisted pair link is established.
ACT
Glows yellow when data is detected on the port.
100
Glows yellow when 100 Mbps data is detected.
LFD
Glows green when Link Fault Detection is enabled.
(NOTE: This feature is only available when either Force 10 or Force 100
mode is enabled. For more on this feature, see pages 3 and 5 of this
document.)
AN
Glows green when PNP/Auto-Negotiation mode is enabled.
PWR
Glows green when unit has power.
FIBER PORT
100
ACT
Glows yellow when 100 Mbps data is detected.
Glows green when data is detected on the port.
LNK
Glows green when a fiber link is established.
N O T E
Twisted pair AND fiber optic cable must be connected, and the twisted pair
crossover/pass-through switch set correctly, before either LNK LED will glow solid.
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LINK FAULT DECTECTION LED ACTIVITY
When LFD is enabled and a fault occurs on a segment of the media
conversion, the various Link LEDs in that conversion will either blink or
extinguish. LEDs may react differently depending on the type of end
devices in the conversion, whether 10/100 Autosensing Media Converters
is in Force 10 or Force 100 mode, where the fault occurs, etc. For
questions, please contact Technical support.
Black Box Customer Service
Call: (724) 746-5500 7 a.m. Monday to midnight Friday; 8 a.m. to 4 p.m.
Saturday (EST)
Fax: (724) 746-0746 or in North America 1-800-321-0746
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA
15055-1018
Technical Support and fax orders 24 hours a day.
WARRANTY
SPECIFICATIONS
Environmental
Operating Temperature: 32° - 104° F (0° - 40° C)
Storage Temperature: 20° - 160° F (-20° - 70° C)
Humidity: 5 - 95% (non-condensing)
Power
AC Input Load: 100/240 ±10% VAC
100 ±10% VAC ~ 50-60 Hz, 0.1A
240 ±10% VAC ~ 50-60 Hz, 0.05A
FIBER OPTIC CLEANING GUIDELINES
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-todiagnose problems in an installation.
2) Dust caps are are installed by the manufacturer 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 of any dust or dirt and that the location is as
free from dust and dirt as possible.
Please contact Black Box Corporation for complete warranty information.
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY
INTERFERENCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class
A computing device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which the user will be required to correct the
interference at his own expense.
Any changes or modifications not expressly approved by the manufacturer could
void the user's authority to operate the equipment.
The use of non-shielded I/O cables may not guarantee compliance with FCC RFI
limits.
This digital apparatus does not exceed the Class A limits for radio noise emission
from digital apparatus set out in the Radio Interference Regulation of the Canadian
Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les
limites applicables aux appareils numériques de classe A prescrites dans le Règlement
sur le brouillage radioélectrique publié par le ministère des Communications du
Canada.
WARNING! Integrated circuits and fiber optic components are extremely
susceptible to electro-static 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) 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 methanol to remove
particles of dirt.
1000 Park Drive • Lawrence, PA 15055-1018 USA
TEL: (724) 746-5500 • FAX: (724) 873-7049
[email protected] • www.blackbox.com
© 2000-2002 Black Box Corp. All rights reserved.
The information in this document is subject to change without notice. Black Box assumes no responsibility for any errors that may appear
in this document. All product names are trademarks of the manufacturer. Specific brands and product names may be trademarks and are
the property of their respective companies.
Document Number 55-80216BB-01 A0
5
January 2002
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