OMNITRON 

OMNITRON 8791-1W RS422/485-FIBER MEDIA CONVERTER DB9 SC SM SF 1550/1310 20KM -40-60C

Mfg Part Number:  8791-1W  
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Price: $1,215.07
Quantity:
In Stock/Mfg Direct Ship
Last Updated: Aug 25, 2026
No Sales Tax except these states
, PO and Wire.

The iConverter RS422/485 is a managed serial RS-422 and RS-485 to fiber converter that transmits serial protocol over fiber media. The RS422/485 media converters operate in pairs, extending serial distances over fiber up to 120km.

The RS422/485 is available with a single-mode dual fiber, multimode dual fiber or single-mode single-fiber transceiver. The serial port interface is available with either a DB-9 female connector or terminal block connector for field wiring.

The RS422/485 automatically detects the data rate of connected Full-Duplex serial device, ranging from 110 bps to 1,024,000 bps. It also automatically adjusts to changes in the connected device's Full-Duplex data rate during operation without reconfiguration or interruption of service.

Half-Duplex RS-485 and Full-Duplex RS-485 (sometimes referred to as Multipoint RS-422) operations are supported via a configurable baud rate DIP-switch to match the master/ slave communication timing.

Connection to DTE or DCE devices are configured by an easily accessible DIP-switch on the front-panel. This feature eliminates the need to use a specific serial cable for each type of device.

A built-in remote Fiber Loopback DIP-switch provides easy validation of the entire fiber segment without interrupting fiber operations.

Integrated configurable terminators support RS-422 and RS-485 operations, allowing the unit to be deployed at any node in the serial line.

The RS422 plug-in module can be used in managed or unmanaged applications. Management is accomplished by installing an iConverter Management Module (NMM2) or Network Interface Device (NID) in the same chassis. The management module provides access to all the advanced features available on the module.

The management software can override the physical DIP-switch settings such as DTE or DCE selection and Fiber Loopback test. Some of the real-time RS422 parameters that can be monitored include power, link, data activity status, module type and model, hardware and software revisions, serial numbers and a user-defined identifier.

The hot-swappable plug-in module can be mounted in a high-density 19 or 5-Module chassis with redundant AC and DC power supplies. It can also be mounted in a 2-Module or in a 1-Module chassis with AC or DC power input.

Main Specification
General Information
Manufacturer Omnitron Systems
Manufacturer Part Number 8791-1W
Manufacturer Website Address http://www.omnitron-systems.com
Brand Name Omnitron Systems
Product Line iConverter
Product Name iConverter Transceiver/Media Converter
Product Type Transceiver/Media Converter
Interfaces/Ports
Total Number of Ports 2
Number of SC Ports 1
Media & Performance
Media Type Supported Optical Fiber
Fiber Mode Supported Single-mode
Fiber Optic Cable Wavelength 1310 nm
Fiber Optic Cable Wavelength 1550 nm
Maximum Distance Supported 20 km
Fiber Optic Cable Core/Cladding Specification 9/125 µm
Power Description
Plug/Connector Type DB-9
Physical Characteristics
Form Factor Chassis Mount
Form Factor Plug-in Module
Height 2.8"
Width 0.9"
Depth 4.5"
Weight (Approximate) 8 oz
Miscellaneous
Application/Usage Network
Certifications & Standards
  • UL
  • cUL
  • CE
  • UKCA
  • FCC Class A
  • TAA
  • BAA
  • NDAA
  • EIA-422/485
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Country of Origin United States
TAA Compliant Yes
Warranty
Limited Warranty Lifetime
Additional Warranty Information

Lifetime warranty with 24/7/365 free Technical Support

WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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