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Thank you for purchasing a StarTech.com 10/100
RJ45 MultiMode Converter. The perfect solution for
converting between 10 Base-T or 100 Base-TX
electrical Ethernet signals and 100 Base-FX optical
Ethernet signals, the converter supports a maximum
multimode fiber optic cable distance of 2km, ensuring
a highly reliable signal for ideal network performance.
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•Auto-negotiation of 10/100 Mbps and Auto –
Crossover for TX port
•Supports IEEE 802.3 10Base-T, 802.3u 100Base-
TX and 100Base-FX industry standards
•Compact, lightweight design, with small form factor
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•Fiber Cable (MultiMode: 50/125, 62.5/125 or
100/140mm)
•Cat5 UTP Cable
•Power source
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•Media Converter (1)
•5V Power Adapter (1)
•Instruction manual (this document)(1)
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10/100 RJ45 to SC Fiber MultiMode Converter
10/100 RJ45 to ST Fiber MultiMode Converter
Revised:16 July 2007 (A)
Support, Warranty Information, and Regulatory Compliance Statement
If you ever need help with your product, visit www.startech.com/support and access our com-
prehensive selection of online tools, documentation, and downloads. This product is backed by a
one-year warranty. In addition, StarTech.com warrants its products against defects in materials
and workmanship for the periods noted, following the initial date of purchase. During this period,
the products may be returned for repair, or replacement with equivalent products at our discre-
tion. The warranty covers parts and labor costs only. StarTech.com does not warrant its products
from defects or damages arising from misuse, abuse, alteration, or normal wear and tear.
Limitation of Liability: In no event shall the liability of StarTech.com Ltd. and StarTech.com USA
LLP (or their officers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of profits, loss of business, or any
pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for
the product. Some states do not allow the exclusion or limitation of incidental or consequential
damages. If such laws apply, the limitations or exclusions contained in this statement may not
apply to you.
FCC Compliance Statement: This equipment has been tested and found to comply with the lim-
its for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This equip-
ment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be deter-
mined by turning the equipment off and on, the user is encouraged to try to correct the interfer-
ence by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is con-
nected.
• Consult the dealer or an experienced radio/TV technician for help.
LED Function
FX 100 Lit when operating as 100Base-FX
FX Link/
ACT
Lit when fiber cable connection with remote device
is detected. Blinks when FX traffic is present
Power Lit when +5V power is available
FDX/Col Lit when Full Duplex Mode is enabled. Blinking
when collisions are present.
TX 100 Lit when operating as 100Base-TX
TX Link/
ACT
Lit when TP cable connection with remote device is
detected. Blinks when TX traffic is present
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10/100 Base-TX
10/100 Base-TX
Network
SC/ST Fiber
Network
Front Panel
Rear Panel
Basic Network Connection
1. Turn off the power to the device/station on the net
work to which the MultiMode Converter will be
installed.
2. Ensure that there is no activity on the network.
3. Connect the MultiMode Converter to the fiber net
work using standard MultiMode fiber cable.
4. Connect the MultiMode Converter to the
100BaseTX network, using standard UTP cable
(terminated on both ends with RJ45 connectors).
Please note: the fiber connections must be
matched from the transmit socket to the receive
socket.
5. Connect the 5V DC power adapter to the
MultiMode Converter, and verify that the Power
(denoted as PWR) LED is illuminated.
6. The TP and FX Link LEDs will illuminate, once all
cable connections have been properly made.
Once this occurs, please restore power to the
device/station that was powered down in step #1.
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LED Functions
Connector Type SC/ST
Fiber Type Multi-mode
Wavelength 850/1310nm
Typical Distance 2 Km
Min TX Power -19.0dBm
Max TX Power -14.0dBm
Sensitivity -31.0dBm
Link Budget 12.0dBm
Fiber Optic Specifications
General Specifications
Connectors RJ45 UTP and Fiber SC or ST
Data Transfer Mode 10/100Mbps
Duplex Mode Full or Half Duplex mode
Power Requirements AC 100-260V
DC 1A @ +5V
Operating Temperature 0 to 70°C
Operating Humidity 5% to 90% RH
Cable
UTP: Cat5 UTP Cable
Fiber: MultiMode: 50/125,
62.5/125 or 100/140μm
Link Budget 12.0dBm
