D-Link DFE-855 User manual

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This guide provides basic information on the installation
and use of D-Link converter model DFE-855.

The D-Link DFE-855 100BASE-TX to Fiber Optic
100BASE-FX Converter represents the best value on the
market. The converter is IEEE 802.3u 100BASE-TX and
100BASE-FX compliant, mediates between a 100BASE-TX
segment and a 100BASE-FX segment, and supports both
full-duplex and half-duplex operation. The DFE-855
converter supports transmission distances of up to 2
kilometers in full-duplex mode (please refer to the section
entitled Connections and Communication Mode).
Diagnostic LEDs on the DFE-855 provide indication of
power, linkage and data reception.
Network Cables Supported
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The connectors and network cables supported by the
converter are listed in the following table:
Connector Type of
Network
Network Cable
Supported
RJ-45 100BASE-TX Cat 5 Twisted-Pair

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Fiber SC 100BASE-FX 1300nm
62.5/125, 50/125-um
Multimode fiber

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   Fiber Optic 
Converter
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• Conforms to the IEEE 802.3u 100BASE-TX and
100BASE-FX standards.
• 100Mbps data transfer rate.
• Supports transmission distances of up to 2 km
(full-duplex).
• One fiber optic SC connector and one RJ-45 connector.
(Refer to Appendix C: RJ-45 Pin Specifications.)
• LED indicators allow for visual verification of power,
linkage and data received.
• Operating temperature: 0 to 55 degrees Celsius.
• Storage Temperature: -25 to 55 degrees Celsius.
• Humidity: 5%- 90% (non-condensing)
• EMI Certification: CE, FCC A, VCCI A and C-Tick.
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The DFE-855 converter features the following LED
indicators:
1. TX Link/Rx Indicator (green)
Steady green indicates that a valid link exists.
Flashing green indicates that the converter is
receiving data from the RJ-45 connector.
2. PWR Indicator(green)
Lights when power is on.
3. FX Link/Rx Indicator (green)
Steady green indicates that a valid link exists.
Flashing green indicates that the converter is
receiving data from the Fiber Optic connector.

Open the shipping carton and carefully remove all items. In
addition to this User's Guide, ascertain that you have:
• One DFE-855 Converter
• One DC power adapter (The specifications for this
adapter appear in Appendix A)
• AC Power Cord
In the event that you find any mismatched, damaged or
missing item, promptly contact your dealer for replacement
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The figure below shows the basic connection scheme for the
DFE-855.
A network device (a server, workstation, router, switch)
with a 100BASE-TX port is connected to the DFE-855's
RJ-45 jack through a twisted-pair cable; a device with a
100BASE-FX port is connected to the DFE-855's SC jack
through a fiber-optic cable; and the supplied AC power
adapter is connected to the DFE-855's DC power jack. The
figure shows the maximum possible distance between the
two devices: 2,100 meters. Note that the network ports on
both devices must be explicitly set to full-duplex mode to
allow the use of a cable of up to 2,000 meters long on the
100BASE-FX side.
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Appendices:
Appendix A

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  


  
  !
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Appendix B
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
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,(
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Appendix C
RJ-45 Pin Specifications.
The following diagram and table show the
standard RJ-45 connector and their pin
assignments.
The standard RJ-45 connector

 
 "#$%!&'
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( )#$%'
 *
 *
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+ *
, *
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
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Pinout descriptions for straight-through and
crossover cables are shown in the following
figures.
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Offices

U.S.A. D-LINK SYSTEMS, INC.
5 Musick Irvine, CA 92618 USA
TEL: [phone] FAX: [phone]
CANADA D-LINK CANADA, INC.
2180 Dunwin Drive, Unit # 6,
Mississauga Ontario, L5L 5M8, Canada
TEL: [phone] FAX: [phone]
U.K. D-LINK (EUROPE) LTD.
D-Link House, 6 Garland Road, Stanmore, London HA7 1DP
TEL: [phone] FAX: [phone]
GERMANY D-LINK (DEUTSCHLAND) GMBH I.G.
Bachstrae 22, 65830 Kriftel Germany
TEL: [phone] FAX: [phone]
FRANCE D-LINK FRANCE
Le FLORILEGE #2, Allee de la Fresnerie
78330 Fontenay Le Fleury France
TEL: [phone] FAX: [phone]
SWEDEN D-LINK A/B
World Trade Center P. O. Box 70396, 107 24 Stockholm
TEL: [phone] FAX: [phone]
DENMARK D-LINK DENMARK
Naverland 2 DK-2600 Glostrup Copenhagen, Denmark
TEL:[phone] FAX:[phone]
SINGAPORE D-LINK SINGAPORE PTE.LTD.
77 Science Park Drive #03-03 CINTECH III,
Singapore Science Park Singapore 118256
EL : 65-774-6233 FAX: [phone]
AUSTRALIA D-LINK AUSTRALIA PTY.LTD.
Unit 16, 390 Eastern Valley Way Roseville, NSW 2069
TEL: [phone] FAX: [phone]
CHINA D-LINK BEIJING
15th Floor, Science & Technology Tower
11, Baishiqiao Road, Haidian District, Beijing 100081
TEL: [phone] FAX: [phone]
JAPAN D-LINK TOKYO
10F, 8-8-15 Nishigotanda, Shinagawa-ku, Tokyo, 141
TEL: [phone] FAX: [phone]
INDIA D-LINK (INDIA) PVT. LTD.
Bombay Office: Plot No.5, Kurla-Bandra Complex Rd.
Off Cst Rd., Santacruz (E) Bombay - 400 098 India
TEL: [phone] FAX: [phone]
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