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Transition Networks Point System RS422/485 Copper to Fiber Slide-In-Module Media Converter 1 of 1

Learn more about Transition Networks Serial To Fiber Converter - 1 x DB-9 , 1 x ST:

Mfg Part#: CRS4F3111-100
Sku: 10373768
UPC: 648177012312
UPC 14: 00648177012312

Transition Networks' serial RS-422/485 to Fiber Media Converter allows you to extend the distance between serial connections with the use of fiber optic cable. This full-featured converter operates in 2-wire mode for RS-422 and either 2-wire or 4-wire mode for RS-485 and supports full or halfduplex data transmission at speeds up to 1.25 Mb/s.


Tech Features Number of ST Ports 1
Tech Features Total Number of Ports 2
Tech Features Product Type Transceiver/Media Converter
Tech Features Manufacturer Part Number CRS4F31111-100
Tech Features Manufacturer Transition Networks, Inc
Tech Features Product Name Serial To Fiber Converter
Tech Features Brand Name Transition Networks
Tech Features Maximum Distance Supported 1.24 Mile

Tech Specs

Tech Specs Status Indicators
  • Power
  • RXC
  • RXF
  • Tech Specs Interfaces/Ports 1 x DB-9 Serial
    1 x ST
    Tech Specs Number of Ports 2
    Tech Specs Product Type Media Converter
    Tech Specs Manufacturer Part Number CRS4F3111-100
    Tech Specs Manufacturer Website Address
    Tech Specs Manufacturer Transition Networks, Inc
    Tech Specs Product Name Point System RS422/485 Copper to Fiber Slide-In-Module Media Converter
    Tech Specs Product Line Point System
    Tech Specs Brand Name Transition Networks
    Tech Specs Connectivity Fiber
    Tech Specs Connectivity Media Multi-mode Fiber
    Tech Specs Distance Support 1.24 Mile
    Tech Specs Additional Information
  • Remote Firmware Upgrade

    Fiber Optic Connector Specs:

  • Min TX PWR: -19.0 dBm
  • Max TX PWR: -14.0 dBm
  • RX Sensitivity: -30.0 dBm
  • Max In PWR: -14.0 dBm
  • Link Budget: 11.0 dB
  • Switches:

  • SW1: 130 ohm resistor Rx
  • SW2: 130 ohm resistor Tx
  • SW3: 1k ohm "pull-down"
  • SW4: 1k ohm "pull-up"
  • SW5: 2-wire / 4-wire
  • SW6: RS-485 / RS-422
  • Tech Specs Compatibility
  • Point System Chassis
  • Tech Specs Certifications & Standards
  • EIA/TIA RS-422
  • EIA/TIA RS-485


  • UL Listed
  • C-UL Listed (Canada) CISPR22/EN55022
  • EN55024
  • EN60950 Class A
  • FCC Class A
  • CE Mark
  • UL 1950
  • Tech Specs Dimensions 3.40" Height x 3.40" Width x 5" Depth
    Tech Specs Power Consumption 5 W
    Tech Specs Management

  • Report converter status to chassis management software
    • Local Fiber Lock status
    • Receive data activity on the copper link
    • Local Switch settings

  • Tech Specs Standard Warranty Lifetime
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