Comprehensive Product Summary – AP1T2-2 PCI 1-Port RS422/485 Dual Mirror Card (5V Only)

---

### 1. Product Overview

Product Name: PCI 1-Port RS422/485 Dual Mirror Card (5V Only)
Model: AP1T2-2
Series: AP1T2 Advanced PCI Sharer Card Series
Article Number: AP1T2-2
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact Information:
- Telephone: +886-2-82858362
- Fax: +886-2-82857065
- Email: rayon@ms1.hinet.net / info@rayontech.com.tw
- Websites: [www.rayontech.com.tw](http://www.rayontech.com.tw), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)

The AP1T2-2 is a professional-grade PCI bus serial communication card designed to provide one shared COM port that can be mirrored across two RS422/RS485 interfaces. It is engineered for industrial control, automation, and communication systems requiring reliable, high-speed serial data exchange. The card operates exclusively on a 5V PCI bus and is fully compatible with a wide range of operating systems, including Windows and Linux distributions.

---

### 2. Key Features

- Dual Mirror Port Design:
Shares a single COM port across two physical connectors, enabling mirrored communication for poll-and-acknowledge (Poll & Ack) environments. This allows two devices to share the same communication channel efficiently.

- Multi-Interface Support:
Each connector can be independently configured as RS232, RS422, or RS485 via onboard DIP switches, providing exceptional flexibility for diverse serial communication requirements.

- High Compatibility:
Fully compatible with Windows 2000, XP, Vista, Windows 7/8, and Linux operating systems. The card supports plug-and-play installation with automatic resource assignment by the PCI BIOS.

- Advanced Serial Controller:
Utilizes the ASIX MCS9865 serial communication controller, offering robust performance and compatibility with standard UART 16950A features.

- Flexible Configuration:
I/O, memory, and IRQ mappings are automatically assigned by the PCI BIOS, simplifying installation and reducing configuration complexity.

- Industrial-Grade Design:
Built for industrial control applications, the AP1T2-2 operates reliably in environments with temperatures from 0°C to 55°C and humidity levels up to 95% RH.

- Dual DB9 Connectors:
Equipped with two DB9 male connectors, providing standard serial connectivity for industrial and automation devices.

- Low Profile Option:
Optional low-profile brackets are available for compact or space-constrained system enclosures.

- Single Voltage Operation:
Designed for 5V PCI slots only, ensuring stable operation in legacy and industrial PC systems.

---

### 3. Technical Specifications

Controller Chip: ASIX MCS9865 (16950A UART compatible)
Bus Interface: PCI (5V or 3.3V slot compatible, 5V operation only for AP1T2-2)
Number of Ports: 1 logical COM port shared across 2 physical connectors
Interface Type: RS422/RS485 (configurable per port via DIP switch)
Baud Rate: 50 bps to 115,200 bps (per port configurable)
Connector Type: 2 × DB9 male connectors
Dimensions:
- Card size: 100 mm × 97 mm (standard PCI bracket)
- Alternate model dimension (AP1T2 general): 75 mm × 90 mm (approximate variant size)
Voltage Requirement: 5V only
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)
Material: Industrial-grade PCB with metal bracket
Weight: Approximately 80–100 g (depending on bracket type)
Mounting: Standard PCI slot mounting; optional low-profile bracket available

---

### 4. Functionality

The AP1T2-2 PCI Dual Mirror Card functions as a serial communication interface that allows one COM port to be shared between two physical RS422/RS485 connectors. This design is particularly suited for poll-and-acknowledge communication systems, where a master device polls multiple slave devices sequentially and receives acknowledgments in return.

Each connector can be configured independently using onboard DIP switches, allowing the user to select between RS232, RS422, or RS485 modes depending on the connected equipment. The card’s ASIX MCS9865 controller ensures reliable data transmission and supports standard UART features such as FIFO buffers and interrupt-driven communication.

Typical Use Cases:
- Industrial automation and control systems
- Data acquisition and monitoring
- SCADA (Supervisory Control and Data Acquisition) systems
- Serial device networking and communication hubs
- Embedded system integration
- Machine-to-machine (M2M) communication
- Legacy equipment interfacing in modern PCs

Compatibility:
The card is compatible with a wide range of operating systems and hardware platforms supporting PCI bus architecture. It supports both 5V and 3.3V PCI slots, though the AP1T2-2 model specifically operates at 5V. The card’s plug-and-play capability ensures automatic resource allocation by the system BIOS, minimizing manual configuration.

---

### 5. Components & Accessories

Included Components:
- 1 × AP1T2-2 PCI 1-Port RS422/485 Dual Mirror Card
- 1 × Standard PCI mounting bracket
- 1 × User manual or quick installation guide

Optional Accessories:
- Low-profile bracket (for compact PC enclosures)
- DB9 serial cables (male-to-female or male-to-male, depending on application)
- RS422/RS485 terminal adapters for field wiring
- Ground isolation modules (available in related models such as AP132-I or AP112-I)

Connectors:
- 2 × DB9 male connectors (mirrored COM port)
- DIP switch block for interface selection (RS232/RS422/RS485)

---

### 6. Installation & Setup

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

Installation Steps:
1. Power off the computer and disconnect it from the power source.
2. Insert the AP1T2-2 card into an available PCI slot.
3. Secure the card using the provided bracket screw.
4. Reconnect power and boot the system.
5. The PCI BIOS automatically assigns I/O address, memory mapping, and IRQ resources.
6. Install the appropriate driver software if required by the operating system.
7. Configure the DIP switches to select the desired interface mode (RS232, RS422, or RS485) for each connector.
8. Connect the serial devices using DB9 cables.

Mounting Options:
- Standard PCI bracket (default)
- Low-profile bracket (optional, for small form factor PCs)

Configuration:
- DIP switch selectable interface per port
- Baud rate and communication parameters configured via software or device driver

---

### 7. Performance & Capabilities

Data Rate: 50 to 115,200 bps per port
Communication Modes: RS422 full-duplex, RS485 half-duplex, RS232 (optional model)
Signal Integrity: High noise immunity suitable for industrial environments
Interrupt Handling: IRQ mapping assigned automatically by PCI BIOS
I/O and Memory Mapping: Fully managed by PCI BIOS for plug-and-play operation
Performance Highlights:
- Reliable dual-port mirroring for synchronized communication
- Stable operation under industrial temperature and humidity conditions
- High compatibility with legacy and modern systems
- Efficient data handling through MCS9865 controller with 16950A UART compatibility

Limitations:
- Operates only at 5V (not suitable for 3.3V-only PCI slots)
- Shared COM port limits simultaneous independent communication on both connectors (mirrored operation only)
- Maximum baud rate limited to 115,200 bps

---

### 8. Standards & Compliance

Bus Standard: PCI Local Bus Specification (Rev. 2.2 compliant)
Interface Standards:
- RS232 (EIA/TIA-232)
- RS422 (EIA/TIA-422)
- RS485 (EIA/TIA-485)

Electrical Compliance:
- 5V PCI signaling
- Meets industrial-grade EMI/EMC requirements (typical for PCI devices)

Environmental Compliance:
- Operating temperature: 0°C to 55°C
- Storage temperature: 0°C to 65°C
- Humidity: up to 95% RH non-condensing

Certifications:
- CE and FCC compliance (typical for Rayon PCI products)
- RoHS compliance (lead-free manufacturing process)

Industry Standards Supported:
- UART 16950A compatibility
- PCI Plug-and-Play resource management
- RS422/RS485 differential signaling standards

---

### 9. Additional Information

Warranty:
Standard manufacturer warranty (typically 1 year, depending on region and distributor). Covers defects in materials and workmanship under normal use.

Technical Support:
Rayon Technology provides technical assistance via email and phone. Updated drivers and documentation are available on the official website.

Maintenance:
- Periodic inspection of connectors and contacts recommended for industrial environments.
- Ensure proper grounding and shielding for RS422/RS485 installations to minimize interference.
- Firmware and driver updates available from Rayon’s support portal.

Product Family and Related Models:
The AP1T2-2 belongs to the AP1T2 series, which includes several variants and related models for different interface configurations and isolation requirements:
- AP1T2/1: RS232 interface version
- AP1T2/2: RS422/RS485 interface version (current model)
- AP1T2/3: RS232/RS422/RS485 configurable version
- AP102-I: Dual isolated RS232 ports
- AP132-I: Dual 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
- AP112-I: Dual isolated RS232/RS422/RS485 ports
- AP132: Dual RS422/RS485 ports (non-isolated)
- APCON301-I: RS232 to isolated RS232/RS422/RS485 converter

Manufacturer’s Note:
All product names and trademarks mentioned are the property of their respective owners. Rayon Technology Co., Ltd. reserves the right to modify specifications without prior notice to improve product performance or compatibility.

---

### Summary

The Rayon AP1T2-2 PCI 1-Port RS422/485 Dual Mirror Card is a robust, industrial-grade communication interface designed for systems requiring mirrored serial communication across two connectors. Its flexible configuration options, reliable ASIX MCS9865 controller, and broad OS compatibility make it an ideal solution for industrial automation, control systems, and legacy equipment integration. With plug-and-play PCI BIOS resource management, DIP switch configurability, and durable construction, the AP1T2-2 delivers dependable performance in demanding environments while maintaining ease of installation and operation.