RS 232 to Fiber Converter | RS-232 Fiber Optic MicroModem

Extend RS-232 Communications Over Fiber

The M82xxD Series provides a transparent fiber optic connection for RS-232 equipment requiring reliable communication over distances beyond the practical limits of copper serial cable. Data, clock, and control signals are multiplexed for transmission across the fiber link and de-multiplexed at the remote MicroModem.

The result is a straightforward way to connect RS-232 equipment across facilities, between remote locations, or through electrically noisy environments while maintaining the original serial interface.

Transparent RS-232 Data, Clock and Control Transmission

The M82xxD supports synchronous and asynchronous communication with continuously variable data rates from 1 bps to 128 Kbps for terminal timing and 1 bps to 100 Kbps for source timing. The MicroModem can operate in either full-duplex or simplex mode.

The fiber link provides transparent transmission of the independent data, clock, and control signals associated with the RS-232 interface.

DCE and DTE RS-232 MicroModem Configurations

The M82xxD Series is available in both DCE and DTE configurations to accommodate different equipment interfaces.

• M8213D / M8215D — DCE configurations
• M8223D / M8225D — DTE configurations

The DCE models use a female DB25 connector, while the DTE models use a male DB25 connector. All models use an LC fiber connector.

Multimode and Singlemode Fiber Options

VERSITRON offers M82xxD MicroModems for both multimode and singlemode fiber applications.

Multimode models:

• M8213D — DCE, LC, multimode, 1310 nm, up to 2 km
• M8223D — DTE, LC, multimode, 1310 nm, up to 2 km

Singlemode models:

• M8215D — DCE, LC, singlemode, 1310 nm, up to 20 km
• M8225D — DTE, LC, singlemode, 1310 nm, up to 20 km

Electrical Isolation for RS-232 Fiber Communications

The M82xxD uses fiber optic transmission to provide electrical isolation between connected equipment. The datasheet specifically identifies electrical isolation as a feature that eliminates ground potential rise and provides dielectric isolation.

This makes fiber an effective choice when RS-232 equipment must communicate across electrically separated locations or environments where electrical interference and grounding differences are concerns.

Compact RS-232 Fiber Optic MicroModem

The M82xxD is designed for installations where equipment space is limited. The MicroModem measures approximately 1.0 x 2.4 x 4.5 inches and weighs approximately 0.425 lb.

It can be installed as a standalone unit or mounted in a 19-inch rack chassis. The series also supports redundant power applications, providing flexibility for both individual equipment connections and centralized installations.

Application Diagram

RS-232 Fiber Optic MicroModem Applications

The M82xxD Series can be used wherever RS-232 serial communications need to be extended over fiber, including:

• Industrial and commercial serial communication systems
• Remote equipment and control interfaces
• Data terminal and communications equipment connections
• Electrically isolated serial communication links
• Long-distance RS-232 connections
• Applications requiring protection from ground potential differences
• Space-constrained installations requiring a compact serial-to-fiber solution

The MicroModem can also be configured for different interface arrangements, including interface extender and modem link configurations, as illustrated in the VERSITRON datasheet.

Why Choose VERSITRON RS-232 Fiber Optic MicroModems?

The M82xxD Series combines a compact form factor with transparent serial communication over fiber. With synchronous or asynchronous operation, DCE and DTE configurations, multimode and singlemode options, electrical isolation, and support for both standalone and rack-mounted installations, the MicroModem provides a flexible solution for extending RS-232 communications.

VERSITRON MicroModems are also designed for long-term reliability, with the datasheet specifying a mean time between failure greater than fourteen years.

VERSITRON — Safeguarding Communications Since 1958

Since 1958, VERSITRON has provided fiber optic communication solutions for demanding data and communications applications. Our RS-232 Fiber Optic MicroModems continue that focus by providing dependable fiber-based connectivity for legacy and specialized serial equipment.

For help selecting the correct RS-232 MicroModem configuration, fiber type, or DCE/DTE model, contact VERSITRON for technical assistance.

General Specifications:

Electrical Interface

• Handshaking standard on all models
• Multimode or Singlemode versions available
• Small Compact Design for limited space installations
• Mean Time Between Failure greater than 14 years
• Fully Transparent Operation with independent data, clock and control lines
• Installation as Modem Links (DCE-DCE) or Interface Extenders (DCE-DTE)
• Optional use of Host Power with M82xxD Series Micromodems
• Electrical Isolation eliminates ground potential rise and provides dielectric isolation
• Standalone or 19” rack mounting with redundant power applications
• Extruded Aluminum Housings for better protection and extended product life
• Standards Conversion for RS-232, RS-423, MIL-188-114A (Unbalanced)
• Compatible with VERSITRON FOM II series modems

Product Models:

Chassis and Accessories

RS-232 Fiber Optic Micromodem (M82xxD) Review:

RS-232 to Fiber Converter is used across the following Industries:

Versitron is one of the leading RS 232 to Fiber Converter manufacturing companies in the USA (based in Delaware). If your industry or installation location isn't listed above, feel free to reach out to us!

Buy the Best RS 232 to Fiber Converter from VERSITRON at a Competitive Price!!