Comprehensive Product Summary – AP2T1-I-3 PCI Isolated 1-Port RS232/422/485 Shared Port Card (5V Only)

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### 1. Product Overview

Product Name: PCI Isolated 1-Port RS232/422/485 Shared Port Card
Model: AP2T1-I-3
Series: AP1T2 / AP2T1 Industrial PCI Serial Communication Cards
Article Number: AP2T1-I-3
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact:
- Tel: +886-2-82858362
- Fax: +886-2-82857065
- Email: rayon@ms1.hinet.net / info@rayontech.com.tw
- Web: [www.rayontech.com.tw](http://www.rayontech.com.tw)

Product Description:
The Rayon AP2T1-I-3 is a PCI-based isolated serial communication card designed to provide one shared communication port configurable for RS232, RS422, or RS485 interfaces. It is a plug-and-play PCI card that supports a single 5V PCI bus slot and is optimized for industrial control, automation, and data communication systems requiring flexible serial connectivity. The card features two physical COM connectors sharing one logical communication port, each independently selectable via DIP switches. It integrates the ASIX MCS9865 serial communication controller and supports baud rates from 50 to 115200 bps.

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### 2. Key Features

- Multi-Interface Support:
Each connector can be configured individually for RS232, RS422, or RS485 communication modes using onboard DIP switches.

- Shared Port Architecture:
Two DB9 male connectors share a single COM port, enabling Poll & Acknowledge (Poll & Ack) communication environments where multiple devices communicate sequentially through a shared channel.

- High Compatibility:
Fully compatible with Windows 2000, XP, Vista, Windows 7/8, and Linux operating systems.

- Plug-and-Play PCI Integration:
Automatic I/O, memory, and IRQ mapping assigned by the PCI BIOS ensures seamless installation without manual configuration.

- Industrial-Grade Design:
Designed for industrial control and automation systems requiring robust and isolated serial communication.

- ASIX MCS9865 Controller:
Incorporates the MCS9865 UART controller, providing high-performance serial communication with 16950A compatibility and FIFO buffering for stable data transmission.

- Electrical Isolation:
Provides galvanic isolation between the PCI bus and serial interface, protecting host systems from electrical surges and ground loops.

- Single Voltage Operation:
Operates exclusively on a 5V PCI bus, ensuring stable performance in legacy and industrial PC environments.

- Compact Form Factor:
Dimensions of 75 × 90 mm make it suitable for space-constrained installations; low-profile brackets are available upon request.

- Flexible Configuration:
DIP switch configuration allows users to select interface type and communication parameters easily.

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### 3. Technical Specifications

Hardware Controller:
- Type: ASIX MCS9865 (16950A compatible)
- FIFO Buffer: Integrated, supports high-speed data buffering

Bus Interface:
- PCI Bus Standard: 32-bit PCI
- Voltage Requirement: 5V only
- Hardware Compatibility: 5V PCI bus slot (not compatible with 3.3V-only slots)

Communication Interfaces:
- Supported Protocols: RS232, RS422, RS485
- Number of Logical Ports: 1 shared COM port
- Number of Physical Connectors: 2 × DB9 male connectors
- Interface Selection: DIP switch selectable per connector
- Baud Rate Range: 50 to 115200 bps
- Signal Isolation: Ground isolation between PCI bus and serial interface

System Resource Allocation:
- I/O Mapping: Assigned automatically by PCI BIOS
- Memory Mapping: Assigned automatically by PCI BIOS
- IRQ Mapping: Assigned automatically by PCI BIOS

Physical Characteristics:
- Dimensions: 75 mm (W) × 90 mm (L)
- Weight: Approx. 80–100 g (typical, without bracket)
- Bracket Options: Standard PCI bracket; low-profile bracket available on request
- Material: High-quality PCB with industrial-grade components

Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 95% RH (non-condensing)
- Storage Humidity: 5% to 95% RH (non-condensing)

Electrical Characteristics:
- Power Supply: 5V DC from PCI bus
- Power Consumption: Low power design (typical < 2W)

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### 4. Functionality

Operational Concept:
The AP2T1-I-3 provides a single logical COM port that can be accessed through two physical DB9 connectors. Both connectors share the same communication channel, allowing for Poll & Ack operation where one device transmits while others listen, ensuring controlled communication in multi-node environments.

Interface Configuration:
Each connector can be independently configured for RS232, RS422, or RS485 operation using DIP switches. This flexibility allows the card to adapt to various serial communication standards without requiring hardware replacement.

Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and monitoring
- SCADA and PLC communication
- Serial device networking and integration
- Laboratory instrumentation and test equipment
- Embedded system communication interfaces

Compatibility:
- Operating Systems: Windows 2000, XP, Vista, Windows 7/8, Linux, SCO UNIX
- Hardware Platforms: Standard desktop PCs, industrial PCs, and embedded systems with PCI slots

Communication Modes:
- RS232: Point-to-point communication
- RS422: Differential signaling for long-distance, high-speed communication
- RS485: Multi-drop communication for up to 32 devices on a single bus

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### 5. Components & Accessories

Included Items:
- AP2T1-I-3 PCI card
- Standard PCI bracket (pre-installed)
- User manual and configuration guide
- Driver CD or downloadable driver package (for Windows and Linux)

Optional Accessories:
- Low-profile PCI bracket (for compact chassis)
- DB9-to-terminal block adapter (for industrial wiring)
- Shielded serial cables (RS232/RS422/RS485 compatible)

Connectors:
- 2 × DB9 male connectors (shared COM port)
- Gold-plated contacts for reliable signal transmission

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### 6. Installation & Setup

System Requirements:
- Available PCI slot (5V)
- Compatible operating system (Windows 2000/XP/Vista/7/8 or Linux)
- Administrative privileges for driver installation

Installation Steps:
1. Power off the host system and disconnect from power.
2. Insert the AP2T1-I-3 card into an available 5V PCI slot.
3. Secure the card using the bracket screw.
4. Power on the system; the PCI BIOS will automatically assign I/O, memory, and IRQ resources.
5. Install the appropriate driver from the provided CD or download from Rayon’s website.
6. Configure the interface type (RS232/RS422/RS485) using the onboard DIP switches.
7. Connect serial devices to the DB9 connectors.

Configuration:
- DIP switches allow selection of interface mode per connector.
- Baud rate, parity, and stop bits are configured via software or device driver settings.

Mounting Options:
- Standard PCI bracket for desktop or industrial PC chassis
- Optional low-profile bracket for compact enclosures

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### 7. Performance & Capabilities

Data Transmission:
- Baud Rate: 50 to 115200 bps
- Data Bits: 5, 6, 7, or 8 bits (software selectable)
- Stop Bits: 1 or 2 (software selectable)
- Parity: None, Even, Odd, Mark, or Space (software selectable)

Communication Stability:
- FIFO buffering ensures smooth data flow and minimizes data loss at high speeds.
- Electrical isolation protects against ground loops and transient voltages.

Capacity:
- Supports one logical COM port shared across two connectors.
- Suitable for multi-drop RS485 networks with up to 32 nodes.

Efficiency:
- Plug-and-play resource allocation reduces setup time.
- Low power consumption ensures minimal thermal output.

Limitations:
- Operates only on 5V PCI slots (not compatible with 3.3V-only PCI systems).
- Shared port design means both connectors cannot transmit simultaneously; communication must be managed via Poll & Ack protocol.

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### 8. Standards & Compliance

Industry Standards:
- PCI Local Bus Specification (Rev. 2.2 compliant)
- EIA/TIA-232, EIA/TIA-422, and EIA/TIA-485 serial communication standards

Regulatory Compliance:
- CE compliant (Electromagnetic Compatibility)
- FCC Class B compliant (for home and industrial environments)
- RoHS compliant (Restriction of Hazardous Substances)

Environmental & Safety:
- Designed for industrial temperature and humidity ranges
- Conforms to standard electrostatic discharge (ESD) protection levels

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### 9. Additional Information

Warranty:
- Standard manufacturer warranty (typically 1 year, extendable upon request)
- Covers manufacturing defects and component failures under normal operating conditions

Technical Support:
- Email and phone support provided by Rayon Technology Co., Ltd.
- Driver updates and documentation available on the official website

Maintenance:
- No regular maintenance required beyond ensuring clean contacts and proper ventilation
- Firmware and driver updates recommended periodically for optimal performance

Product Line Compatibility:
The AP2T1-I-3 belongs to Rayon’s family of industrial PCI serial communication cards. Related models include:
- AP102-I: Two ground-isolated RS232 ports
- AP132-I: Two ground-isolated RS422/RS485 ports
- AP301-I: One RS232 and one isolated RS232/422/485 port
- APLOG301-I: RS232 to isolated RS232/422/485 converter with monitoring capability
- AP112-I: Two isolated RS232/RS422/RS485 ports
- AP132: Two RS422/RS485 ports (non-isolated)
- APCON301-I: RS232 to isolated RS232/RS422/RS485 converter

Product Lifecycle & Updates:
- Long-term availability for industrial applications
- Backward compatibility with legacy PCI systems
- Continuous driver support for modern operating systems

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### Summary

The Rayon AP2T1-I-3 PCI Isolated 1-Port RS232/422/485 Shared Port Card is a robust, industrial-grade communication interface designed for flexible serial connectivity in automation, control, and data acquisition systems. Its shared-port architecture, configurable interface modes, and electrical isolation make it ideal for environments requiring reliable, noise-immune serial communication. With support for multiple operating systems, automatic PCI resource allocation, and a compact design, the AP2T1-I-3 delivers high performance, versatility, and long-term reliability for industrial and embedded applications.

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Manufacturer: Rayon Technology Co., Ltd.
Model: AP2T1-I-3
Type: PCI Isolated 1-Port RS232/422/485 Shared Port Card (5V Only)
Dimensions: 75 × 90 mm
Interface: RS232 / RS422 / RS485 (DIP switch selectable)
Baud Rate: 50–115200 bps
Connectors: 2 × DB9 male (shared COM port)
Operating Systems: Windows 2000/XP/Vista/7/8, Linux
Operating Temperature: 0–55°C
Power Supply: 5V PCI bus
Manufacturer Website: [www.rayontech.com.tw](http://www.rayontech.com.tw)