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RADISYS EXM-24 Port Communications Board RS-232

Exm-24 Radisys Rs-232 Eight-port Intelligent Serial Communications Board

( Brand: Radisys ), ( Manufacturer Part Number: EXM-24 ), ( Part Type: Board ), ( Country Of Origin: United States ), ( Item Length: 12 )

Review RADISYS Rs-232 Eight port Intelligent Serial Communications Board

The **Radisys EXM-24 RS-232 Eight-Port Communications Board** is a high-performance, modular expansion module designed to deliver robust and scalable serial communications capabilities for industrial, embedded, and networking applications. Engineered for integration into Radisys robust platform of single-board computers (SBCs) and ruggedized systems, this board provides eight fully isolated RS-232 serial ports, each capable of supporting full-duplex asynchronous communication at speeds up to **115,200 baud**, making it ideal for demanding environments where reliable data transmission is critical. Built with precision and durability in mind, the EXM-24 features a **high-density connector interface** that ensures seamless compatibility with Radisys carrier boards, while its compact form factor optimizes space utilization in compact embedded systems. Each RS-232 port is equipped with **hardware flow control (RTS/CTS)**, allowing for precise data synchronization and preventing buffer overflows in high-throughput applications. Additionally, the board supports **programmable handshaking signals**, including DTR, DSR, and DCD, providing flexibility for interfacing with a wide range of legacy and modern serial devices, from industrial sensors and PLCs to GPS modules and barcode scanners. To enhance reliability in noisy or electrically challenging environments, the EXM-24 incorporates **optical isolation** between the host system and each serial port, safeguarding against voltage spikes, ground loops, and electromagnetic interference (EMI). This isolation not only protects sensitive equipment but also ensures data integrity in harsh industrial settings, such as manufacturing plants, oil and gas facilities, or transportation systems. The board s **low-power design** further extends operational efficiency, making it suitable for battery-powered or energy-constrained applications without compromising performance. With support for **multi-drop configurations** and **loop-back testing**, the EXM-24 simplifies troubleshooting and deployment, allowing engineers to verify connectivity and diagnose issues efficiently. Whether deployed in a **real-time control system, telemetry network, or data acquisition platform**, this communications board delivers a balance of speed, isolation, and versatility, ensuring seamless integration into mission-critical infrastructure. Backed by Radisys reputation for rugged reliability and industry-leading technical support, the EXM-24 stands as a dependable solution for developers and system integrators seeking to expand their serial communications capabilities with confidence.

### **Pros and Cons of buying a Radisys EXM-24 RS-232 Eight-Port Communications Board**

#### **Pros**

1. **High Port Density** The EXM-24 provides eight RS-232 serial ports in a single, compact board, making it ideal for applications requiring multiple serial connections in a limited space. This reduces the need for external serial adapters or hubs, simplifying cabling and reducing clutter.

2. **Reliable and Industrial-Grade Design** Radisys is known for producing robust, enterprise-grade hardware designed for telecommunications, industrial automation, and embedded systems. The EXM-24 is likely built to withstand harsh environments, including temperature fluctuations and electrical noise, which is critical for mission-critical applications.

3. **Compatibility with Radisys Platforms** If you are already using Radisys hardware (such as their embedded systems, routers, or telecom equipment), this board integrates seamlessly with their ecosystem. This can reduce integration challenges and ensure better performance in existing setups.

4. **Scalability** The modular nature of Radisys hardware allows for easy expansion. If your serial communication needs grow, you can add more EXM-24 boards or other Radisys modules without overhauling your entire system.

5. **Support for Advanced Features** Radisys boards often include features like flow control (RTS/CTS, DTR/DSR), programmable baud rates, and support for various serial protocols. The EXM-24 likely offers these capabilities, making it versatile for different use cases, including legacy systems or custom applications.

6. **Long-Term Availability** Radisys has been in the industry for decades, and their products are often supported for extended periods. This reduces the risk of obsolescence compared to newer, less established vendors.

7. **Software and Driver Support** Radisys provides comprehensive documentation, SDKs, and driver support, which can ease development and troubleshooting. This is particularly useful for developers or IT teams managing serial communication in complex systems.

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#### **Cons**

1. **Cost** Radisys hardware is typically more expensive than off-the-shelf or generic RS-232 solutions (e.g., USB-to-serial adapters or PCIe cards from other vendors). The premium price may not be justified for simple or low-volume applications where budget is a constraint.

2. **Overkill for Basic Needs** If your application only requires a few RS-232 ports and does not need the robustness or integration benefits of Radisys, a cheaper alternative (such as a USB-to-serial dongle or a generic PCIe card) may suffice. The EXM-24 s industrial-grade features are unnecessary for non-critical or consumer-grade applications.

3. **Vendor Lock-In** Radisys hardware is optimized for their own platforms. If you are not already using Radisys equipment, integrating the EXM-24 may require additional development effort or custom firmware, increasing time-to-market and costs.

4. **Limited Availability of Parts** As Radisys has shifted focus away from some hardware lines (due to acquisitions or market changes), finding replacement parts or support for older models can be challenging. Always verify the current availability before purchasing.

5. **Learning Curve** Radisys products often require familiarity with their specific APIs, documentation, and tools. For teams unfamiliar with their ecosystem, onboarding and troubleshooting may take additional time and resources.

6. **Power Consumption** Industrial-grade hardware like the EXM-24 may consume more power than simpler solutions. In battery-powered or low-power applications, this could be a drawback.

7. **Potential for Redundancy** If your system already has built-in serial ports or other communication interfaces, adding an external board like the EXM-24 may be redundant, increasing complexity without adding value.

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### **Conclusion**

The Radisys EXM-24 RS-232 eight-port communications board is a high-quality, reliable, and scalable solution for applications requiring multiple serial ports in an industrial or enterprise environment. It excels in scenarios where integration with Radisys hardware, long-term support, and robustness are priorities. However, its high cost, potential vendor lock-in, and overkill for basic applications make it less ideal for budget-conscious or simple serial communication needs.

If you are working within a Radisys ecosystem, need eight reliable RS-232 ports in a compact form factor, and can justify the investment, the EXM-24 is a strong choice. For other use cases, evaluating alternatives like USB-to-serial adapters, PCIe cards from other vendors, or even software-based serial emulation (e.g., virtual COM ports) may be more cost-effective.

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### **Recommendation**

- **Buy the Radisys EXM-24 if:**

- You are already using Radisys hardware and need seamless integration.

- Your application requires eight RS-232 ports in a rugged, industrial environment.

- Long-term support and reliability are critical for your system.

- You are willing to invest in a premium solution for scalability and advanced features.

- **Avoid the Radisys EXM-24 if:**

- Your budget is tight, and a simpler, cheaper alternative (e.g., USB-to-serial dongles) will work.

- You are not using Radisys platforms, and vendor lock-in is a concern.

- Your serial communication needs are minimal (e.g., fewer than four ports).

- You prioritize cost savings over industrial-grade features.

For most non-enterprise or non-Radisys environments, a cost-effective alternative like a **PCIe RS-232 card from a different vendor** (e.g., National Instruments, FTDI, or Advantech) or **USB-to-serial adapters** (e.g., PL2303, CP2102) may be more practical. Always assess your specific requirements before committing to the EXM-24.

Details:

Fast and hassle-free. RadiSys EXM-24 RS-232 Eight-Port Intelligent Serial Communications Board:: The is an eight-port intelligent serial communications board designed to be 100% compatible with Pegboard PC/8i software and accessories. Radisys EXM-24 Manual PDF. Are not included with this equipment unless pictured and/or listed in the above.

part #: exm24 prices

  • $495.00-$1195.00

specifications pcbemdev:

  • brand: Radisys
  • mpn: Exm-24
  • part type: Board
  • country of origin: United States
  • item length: 12

seller pcbemdev:

  • # reviews: 17668
  • city: Champaign, Illinois
  • rating: 99.9%

returns pcbemdev:

  • method: Money back
  • time: 30 Days
  • paid by: Buyer
  • policy: Returns Accepted

offer pcbemdev:

  • sold: 0
  • quantity: 1
  • started: April 9, 2026
  • availability: In Stock
  • options: Ship-to-home

shipping pcbemdev:

  • class: Standard, One-day, Economy
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery, FedEx Standard Overnight, FedEx Ground Economy
  • cost: $25.01
  • type: Calculated
  • transit: 4-8 Days

general pcbemdev:

  • Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs
  • condition: Used

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part type: board, country of origin: united states, item length: 12,
category: business & industrial > electronic components semiconductors > circuit boards prototyping > printed circuit boards pcbs, sku: 17025390541490723,
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2 offers $495.00–$1195.00 USD
  • Used. Offer #1 priced at $1195.00 + $25.01 shipping estimate = $1220.01* total. Radisys Manual (pdf).+$25.01 shipping
  • Used. Offer #2 priced at $495.00 + $25.01 shipping estimate = $520.01* total. +$25.01 shipping

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