Transport 2 Active Channels of Serial Data Over Fiber

Fiber Link Card Icon

Temperature Icon

RS-232,422,485 Icon2 Channel IconMUX Icon24V 48V DC Powered Icon

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Features
  • Rugged design for wide operating temperature of -25°C to +70°C
  • 24-48VDC powering required
  • Available with ST or SC connectors for single or multi-mode fiber
  • ST and SC singlemode and multimode fiber units available
  • Supports baud rates of 50 bps to 921.6 Kbps baud
  • Supports 2 & 4 Wire RS-485 operation
  • Critical, high voltage, remote or un-manned locations operating 24/7/365
  • On/Off Termination Resistor Dip Switch for RS-485/422
  • Protocols tested: DNP, Modbus, DF1, and Profibus
  • Limited Lifetime Warranty

  • Made in USA
Overview

The Serial Data Fiber Link Card system transports two active channels of copper serial data over fiber optic cable, allowing for both RS-232 and RS-485/422 to be used at the same time. Fiber optics not only provide long distance communication up to 74 mi. (120km), but also provide immunity to EMI/RFI and transient surges. This is ideal for extending serial data communications over long distances, or near large electrical equipment where resistance to EMI is desired.

The system supports serial data rates from 50 bps to 921.6Kbps, and has an auto-sensing feature that eliminates the need to manually set serial data rates. The included Pull High / Pull Low rotary dials allows for fast and easy biasing adjustment. Each Fiber Link Card requires 24-48VDC and has a comprehensive set of LEDs on the front panel that indicate power status, fiber status, and activity for RS-232 and RS-485/422 channels.

Specifications

For a comprehensive review of the product specs, please see the Data Sheet, or feel free to contact us with any questions.


Transmission Method:
Frequency modulated light via two optical fibers


Wavelength:
Multimode: 1310nm
Singlemode: 1310nm


Fiber Type/Distance:
Multimode (62.5/125µm, 50/125µm): 1.2 mi./2km
Singlemode (9/125µm): 12.4 mi./20km, 37 mi./60km, 74 mi./120km


Fiber Connector Type:
ST or SC


Power:
24~48VDC nominal, 150mA @ 24VDC or 3.6 Watt


Protocols:
Serial RS-232 & RS-485/422 Data


Dimensions:
H 3.93” x W 1.24” x D 6.94”
(Standard RLH Fiber Link Card Form Factor)


Operating Temperature:
-25˚C ~ 70˚C (-13˚F ~ 158˚F)

Diagrams
RS232 & 485/422 Single Channel Application

RS232 & 485/422 Single Channel Application

RS232 & 485/422 2 Channel Application

RS232 & 485/422 2 Channel Application

Downloads

Download the RLH Data Sheet

Download the RLH User Guide

Download the Layout

Download the RLH DXF File

Download the DXF File

Ordering
  • Plug and play compatible with -1 model RS-232 & 422/485 Serial Data Fiber Link Card systems
  • Bidirectional single fiber models require an A side and B side card for a complete system
  • This card is designed to be installed into a Card Housing

Please submit a quote request or contact your RLH sales representative for pricing and delivery information.

Numbers

SD4-03-2
SD4-04-2
SD4-40-2
SD4-41-2
SD4-45-2
SD4-50-2
SD4-51-2
SD4-55-2
SD4-10-2
SD4-11-2
SD4-14-2
SD4-15-2