Transport 2 Active Channels of Serial Data Over Fiber

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Temperature IconRS-232,422,485 Icon

2 Channel Icon

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Features
  • Supports 2 active channels of serial data
  • Simultaneously transmits both RS-232 and RS485/422
  • Convenient LEDs for power, fiber, and serial signals
  • Supports baud rates of 50 bps to 921.6 Kbps baud
  • Extends communication up to 74 mi. (120km)
  • Transparent RS-232 & RS-485/422 extension over fiber
  • Supports 2 & 4 Wire RS-485 operation
  • DC power alarm contact
  • Dual redundant power inputs
  • Rugged design for wide operating temperature is standard
  • Protocols tested: DNP, Modbus, DF1
  • DIN or wall mount with included wall mount accessories
  • Singlemode and multimode models available
  • Limited Lifetime Warranty

  • Made in USA
Overview

The RLH Serial Data DIN Fiber Link 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 EM/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.

A comprehensive set of LED’s on the front panel indicate power status, fiber status, RS-232 and RS-485/422 activity. Powering options include our standard 24-48VDC, or high range DC powering of 125VDC. This rugged system also features redundant power inputs with a system alarm contact, and comes standard with DIN clip and wall mount ears.

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: 850nm
Singlemode: 1310nm, 1550nm


Bi-Directional Connector Fiber Type/Distance:
Multimode: (62.5/125µm) 1.24 mi. (2 km), (50/125µm): 1.24 mi./2km
Singlemode: (9/125µm) 12.4mi /20km, 37mi / 60km


Dual Fiber Connector Fiber Type/Distance:
Multimode (62.5/125µm): 1.24 mi./2km, (50/125µm): 1.24mi./2km
Singlemode (9/125µm): up to 74.5mi/120km


Fiber Connector Type:
ST or SC


Powering:
24~48VDC / 125VDC
Dual Redundant Power Inputs


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


Dimensions:
H 4.93” x W 1.20” x D 3.93” (not including DIN clip)
Standard T-35 DIN rail mounting or wall mount with included brackets


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

Diagrams
2 Channel Point to Point

2 Channel Point to Point

Point to Point Application

Point to Point Application

Downloads

Download the RLH Data Sheet

Download the RLH User Guide

Download the DXF File

Download the Step File

Download the STL FileDownload the Layout

Ordering
  • Add -A to the end of the part number for 125VDC input power option
  • Bi-Directional single fiber models require an A side and B side unit for a complete system

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

Numbers

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