FlexPoint 232

Baud Rate Autosensing RS-232 to Fiber Media Converter

FlexPoint 232
Application Example




  • The FlexPoint 232 is an asynchronous serial RS-232 to fiber media converter
  • Supports speeds up to 115,200 baud
  • Extends network distances via fiber up to 80km
  • Supports most network port interfaces with a wide variety of cable and connector types
  • Features a DTE/DCE switch for easy connection to most serial equipment
  • Supports hardware flow control via RTS, CTS, DCD, DTR and DSR
  • Feature remote loopback capability for remote fiber testing
  • Wall-mount or rack-mount on a 5-Module shelf or in a 14-Module power-redundant FlexPoint Powered Chassis
  • Completely software independent with no installation of drivers required
  • Peace-of-mind reliability backed by a lifetime warranty and free 24/7 technical support


A pair of FlexPoint 232 modules provide the serial connection between a PC and Terminal Server allowing access to multiple data devices via fiber. Multimode or single-mode fiber can be used, and fiber links can be extended up to 60km using single-mode fiber.

The FlexPoint 232 is a modular RS-232 to fiber media converter that provides reliable and cost-effective fiber extension for serial connections.

The asynchronous RS-232 interface supports speeds up to 115,200 baud and supports RTS, CTS, DCD, DTR, and DSR hardware flow control signals providing plug-and-play connectivity with most serial devices. It features a switch for convenient connection to DTE or DCE equipment.

The fiber port operates at 850nm or 1310nm and features ST, SC, MT-RJ or LC connectors. Multimode fiber models support distances of up to 5km, and single-mode fiber models support distances of up to 60km.

The FlexPoint 232 features descriptions of the LED indicators on the label for easy in-the-field installation and maintenance. The LEDs report the availability of power, DTE/DCE selection, fiber loopback status, port activity and link status.

The FlexPoint 232 features remote loopback capability by testing the fiber link end-to-end from one physical location.

FlexPoint modules can be mounted utilizing optional wallmounting hardware or with DIN-rail mounting brackets. They can also be rack-mounted in a 5-Module shelf or in a high-density 14-Module, power-redundant Powered Chassis.

FlexPoint modules installed in the 5-Module shelf or used as standalone devices can be powered by an external AC to DC power adapter, or through the 5VDC chassis connector. Standalone modules can also be powered by attaching an external DC power supply (18-60VDC). When used in the 14-Module power-redundant Powered Chassis with any combination of AC and DC power supplies, the installed modules are powered via the 5VDC chassis connector.

The wide variety of FlexPoint mounting and power options provide flexible upgrade paths as network requirements change and grow.

FlexPoint unmanaged media converters are easy to use and provide dependable fiber connectivity in Enterprise and Government networks around the world.


Model Type 232
Protocols EIA / TIA 232C/D/E
Flow Control Software: XON, XOFF
Hardware: RTS, CTS, DCD, DTR and DCR
Data Rates Up to 115,200 baud
Copper Cable DB9 Female, Length: 15.2m / 50ft.
Fiber Cables Multimode: 50/125, 62.5/125, 100/140μm
Single-mode: 9/125μm
Fiber Connectors SC, ST, MT-RJ, LC
DIP-Switches DTE / DCE, Fiber Loopback, DB-9 crossover
LED Displays Power, DTE/DCE Select, Copper Link/Receive,
Fiber Link/Receive
Dimensions W: 3.0" x D: 4.0" x H: 1.0"
Weight 6 oz. (without power adapter)
Compliance UL, CE, FCC Class A
Power Requirments   Barrel Connector Molex Connector
Nominal Voltage: 9VDC 5VDC
Voltage Range: 6.0 to 15.0VDC 4.75 to 5.25VDC
Power Nominal: 0.5A @ 9VDC 0.6A @ 5VDC
Maximum Power: 1A @ 9VDC 0.75A @ 5VDC
Temperature 0 to 50º C
Humidity 5 to 95% (non-condensing)
Altitude -100m to 4000m
MTBF (hrs) Module without Power Adapter: 850,000
Module with Power Adapter -1: 250,000
Module with Power Adapter -2: 100,000
Fiber TypeDistance
Fiber / Copper
Connector TypeTx / Rx
λ (nm)
Tx Power (dBm)
Tx Power (dBm)
Rx Sense (dBm)
Rx Power (dBm)
Power Budget
MM 2.5km /
50 ft.
4481-x 4480-x - - 850 -21 -11 -31 -11 10
MM 5km /
50 ft.
4483-x 4482-x 4487-x - 1310 -24 -14 -31 -14 7
SM 30km /
50 ft.
4485-x 4484-x 4488-x 4489-2x 1310 -15 -8 -31 -8 16
SM 60km /
- 4486-x - - 1310 -5 0 -31 -3 26

Power Adapter Kits (-x):
-0 = No power adapter included, -1 = 110-120 VAC/60 Hz (US plug), -2 = 100-240 VAC/50-60 Hz (IEC plug, no power cord).
Contact Omnitron for other fiber options and operational temperature ranges.