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XPF1: Duplex Multimode Fiber to 10/100 BASE T Ethernet Serial Converter


XPF1 with Box


"Let me spin a very large
RS485 network for you!"


Product Features

  • This unit features full duplex serial conversion from 10/100 Base T Ethernet to a pair of ST 62.5 micron multimode ports.

  • As a pair, this product will serve as a bridge of an Ethernet link, using multimode fiber, thru an environment that is hostile to Ethernet. The noise immune fiber link can extend to 1Km minimum. typically 1 mile.

  • A pair can also be used as a fiber link extension using the Ethernet, extending the distance to the limits of the Ethernet.

  • Transparent to all asynchronous data, with any combination of data, parity, and stop bits, at data rates up to 921.6Kbps. o Jumpers or settings are ordinarily required.

  • Jumpers J2, and J3 can be used to optimize performance under certain speed and fiber cable conditions.

  • Jumper J1 will turn the fiber transmitter on for test purposes.

  • Jumper J4 will reset the Ethernet module, when in the "B" position.

  • Edge mounted LEDs display power and data activity at the fiber interface, and at the Ethernet interface. The Ethernet jack also displays connect and data activity information.

  • Broad environmental range. -40C to +80C ambient, 10 to 90% RH(non-condensing)

  • Four(4) easy mount through hole standoffs, which accept #6 hardware, are provided on the circuit board.

  • User connections are the two fiber ports, an RJ45 jack for the Ethernet, and a barrel connector for the input power.

  • Accessories available are an enclosure, a wall wart power supply, and conformal coating. Contact us for options help.

  • R E Smith Inc makes a wide variety of isolated converters that address the electrical noise problems that contribute to unreliable communications, and product failure. If what you see here is not exactly what you need, don't hesitate in calling us at 513-874-4796.

  • We also have a new series of Converters and Repeaters that extend the RS232C communications distance far beyond conventional limits. Contact us for information on these leading edge problem solvers.

  • WARNING: Do NOT connect this device to a telephone system under any circumstances. Damage could result to the circuit board and/or your telephone system.

About R E Smith, Inc:

R E Smith, Inc. engineers and manufactures a comprehensive line of isolated and non-isolated converters, repeaters, multiport repeater hubs, fiber optic based products, and I/O boards. All our products are designed, built, tested, and shipped from our facility in the Greater Cincinnati Ohio area. We ship small quantities of most products from stock the same day, and larger quantities in a few business days.

We listen to you. We are customer driven. Many of our products were developed and improved due to suggestions and feedback from our word-wide customer base. They are being used at the South Pole, at the bottom of the sea, at the edge of space, and everywhere in between. Typical uses are very large networks, monitor and control of elevators, machinery, lighting, security, fire and alarm, access, cameras, military ground support, and much more. We provide free technical support, no-argument warranty repairs, and recommendations for your application. Challenge us with your communications problem. We may already have the solution. If your system keeps failing, or is unreliable, we have isolated, doubly isolated, noise resistant, cost effective, and proven solutions for difficult environments.

Related Files:

pdf icon XPF1revA.pdf Converter schematic/physical Rev A

Physical Properties and Features:

Fiber: Two 62.5 micron ST Connectors
Ethernet: RJ45 Telephone style jack
Power: Barrel connector.
LEDs Power(Yellow), fiber data activity, and Ethernet activity(TX: red, RX: green)


Distance: Fiber: 1Km Min, Ethernet: Consistant with the Ethernet specification
Operation: Full Duplex Fiber to 10/100 Base T Ethernet
Format: Asynchronous data with any combination of data, parity, and stop bits.
Speed: Up to 921.6Kbps
Environmental: -40C to +80C ambient, 10-90% RH(non-condensing)
Supply Voltage: 9-35 VDC
Power: Under 1/2 Watt(typical)
Size: 3.75" X 2.75" X 0.9" (PC Board), with connectors: 4.00" X 3.50"
Mounting: 4 Holes at 2.25" X 3.00" (built-in standoffs for #6 hardware)

Options and Ordering Information:

XPF1: $279.00 ea. (Circuit board only)
Enclosure: $10.00 ea. (medium)
Power Supply: $8.50 (12VDC/0.5A switching regulated wall power supply)
Meets California, and most world wide safety and efficiency standards.

This is the complete order number for the XPF1 with all options (no fiber cables):

XPF1 with options (Power Supply and enclosure): Order Number: XPF1-BSPS @ $297.50 ea. (Qty. 1-9)

Need a different configuration or more information? Give Ron a Call at 513-874-4796 or 513-638-0228(Cell)


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