1. Product Overview

Product Name: PCI-7233
Model: PCI-7233
Series: PCI-/cPCI-/LPCI-/LPCIe-723X Series Isolated Digital I/O Cards
Article Number: PCI-7233
Manufacturer: ADLINK Technology Inc.
Website: [www.adlinktech.com](http://www.adlinktech.com)

The ADLINK PCI-7233 is a 32-channel isolated digital input (DI) card designed for industrial automation, monitoring, and control applications. It belongs to ADLINK’s 723X series of isolated digital I/O cards, which also includes models with mixed input/output and output-only configurations. The PCI-7233 provides robust optical isolation, high noise immunity, and reliable change-of-state (COS) detection across all input channels, making it ideal for environments where electrical isolation and event-driven input monitoring are critical.

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2. Key Features

- 32 Isolated Digital Input Channels: Provides 32 optically isolated input lines for interfacing with external digital signals.
- High Isolation Voltage: 5000 Vrms optical isolation between channels and the host system ensures protection against high-voltage transients and ground loops.
- Change-of-State (COS) Detection: Hardware-based COS detection on all 32 channels generates interrupts when input states change, enabling efficient event-driven processing.
- Wide Input Voltage Range: Accepts non-polarity DC input signals from 5 V to 24 V, simplifying integration with various industrial sensors and devices.
- High Throughput: Supports input sampling rates up to 10 kHz, suitable for real-time monitoring applications.
- Compact PCI Form Factor: Standard 32-bit 5 V PCI bus interface for easy integration into industrial PCs.
- Robust Connector Interface: Equipped with a 37-pin D-sub female connector for secure and standardized wiring.
- Software and Driver Support: Compatible with Windows and Linux operating systems, with driver packages for LabVIEW™, MATLAB®, and ADLINK’s DAQPilot and PCIS-DASK libraries.
- Industrial-Grade Design: Operating temperature range of 0°C to 60°C and humidity tolerance up to 95% non-condensing.
- Plug-and-Play PCI Configuration: Fully compliant with PCI Local Bus Specification Rev. 2.1, supporting automatic resource allocation by system BIOS.

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3. Technical Specifications

Isolated Digital Input
- Number of Channels: 32
- Input Voltage Range: 0–24 V DC (non-polarity)
- Logic Levels:
- Logic “L”: 0–1.5 V
- Logic “H”: 5–24 V
- Input Resistance: 1.2 kΩ @ 0.5 W
- Isolation Voltage: 5000 Vrms (channel-to-system)
- Throughput: 10 kHz
- Interrupt Sources: Dual COS interrupts (channels 0–15 and 16–31)
- Data Transfer Mode: Programmed I/O

General Specifications
- Connector Type: 37-pin D-sub female
- Dimensions: 158 mm (L) × 107 mm (H)
- Weight: Approx. 200 g (typical for PCI form factor)
- Power Consumption: +5 V @ 300 mA typical
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -20°C to 80°C
- Relative Humidity: 5%–95%, non-condensing
- Bus Interface: 32-bit, 5 V PCI bus (PCI Local Bus Specification Rev. 2.1 compliant)
- Isolation Type: Optical isolation using phototransistor couplers

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4. Functionality

The PCI-7233 functions as a high-isolation digital input interface between industrial field devices and a host computer. Each of the 32 input channels is optically isolated, protecting the host system from voltage surges, ground potential differences, and electrical noise. The card detects digital signal transitions and can generate interrupts when input states change, enabling responsive event-driven control.

Use Cases and Applications:
- Industrial automation and process control
- Machine status monitoring
- Safety interlock and alarm systems
- Data acquisition and logging
- Remote sensing and digital signal monitoring
- Event-driven control systems requiring COS detection

Compatibility:
- Compatible with standard PCI slots in industrial PCs.
- Supported operating systems: Windows 2000/XP/Vista/7/Server 2003 and Linux.
- Supported software environments: ADLINK DAQPilot, PCIS-DASK, DAQBench, LabVIEW™, MATLAB®, and Delphi/C++/VB.NET development environments.

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5. Components & Accessories

Included Items:
- PCI-7233 card
- User’s manual (Rev. 4.05)
- ADLINK software CD with drivers and utilities
- Software installation guide

Optional Accessories:
- DIN-37D-01: Terminal board with one 37-pin D-sub connector and DIN-rail mounting (cable not included).
- ACLD-9137-01: General-purpose terminal board with one 37-pin D-sub male connector.
- ACL-10137-1MM: 37-pin D-sub male-to-male cable, 1 meter length.

Connectors:
- CN1 (37-pin D-sub female): Provides access to all 32 isolated digital input channels and isolated ground lines.
- CN2/CN3 (onboard terminals): Provide isolated ground (IGND) and external power (VDD) connections for reference and shielding.

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6. Installation & Setup

System Requirements:
- Available 32-bit PCI slot (5 V signaling)
- Host PC with Windows or Linux OS
- External digital input sources (5–24 V DC)

Installation Procedure:
1. Power off the host computer and disconnect all peripherals.
2. Insert the PCI-7233 card into an available PCI slot.
3. Secure the card using the chassis screw.
4. Connect external digital signals to the 37-pin D-sub connector using an appropriate terminal board or cable.
5. Power on the system; the BIOS automatically assigns resources (I/O address and IRQ).
6. Install ADLINK drivers (DAQPilot or PCIS-DASK) from the provided CD or ADLINK website.
7. Verify installation using ADLINK’s DAQMaster utility or device manager.

Configuration:
- The PCI-7233 is Plug-and-Play; no manual jumper or DIP switch settings are required.
- COS interrupt functionality can be configured via software APIs.
- External power (5–24 V DC) may be required for certain input configurations depending on field wiring.

Mounting Options:
- Standard PCI slot mounting within industrial PC chassis.
- External terminal boards can be DIN-rail mounted for field wiring convenience.

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7. Performance & Capabilities

Speed and Throughput:
- Input sampling rate up to 10 kHz ensures reliable detection of fast digital transitions.
- COS detection latency is minimal, allowing near real-time interrupt response.

Capacity:
- 32 isolated input channels, each capable of handling up to 24 V DC input signals.
- Dual-interrupt architecture supports simultaneous monitoring of two 16-channel groups.

Efficiency:
- Optical isolation minimizes signal interference and ground loop issues.
- Non-polarity input design simplifies wiring and reduces installation errors.

Limitations:
- No digital output functionality (input-only card).
- Requires external power for field-side circuits.
- Limited to 10 kHz throughput, not suitable for high-frequency pulse counting applications.

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8. Standards & Compliance

- PCI Bus Compliance: Fully compliant with PCI Local Bus Specification Rev. 2.1.
- CompactPCI Compatibility: Shares design architecture with cPCI-7230 (PICMG 2.0 R2.1 compliant).
- Isolation Standards: 5000 Vrms optical isolation verified for industrial-grade protection.
- Environmental Compliance: Designed for industrial temperature and humidity ranges.
- Software Standards:
- DAQPilot API for Windows
- PCIS-DASK/X for Linux
- MATLAB® DAQ Toolbox adapter (DAQ-MTLB)
- LabVIEW™ VI set (DAQ-LVIEW PnP)
- Regulatory Compliance: CE and FCC Class A (typical for ADLINK PCI cards).
- Quality Assurance: Manufactured under ISO 9001-certified processes.

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9. Additional Information

Warranty:
- Standard ADLINK limited warranty (typically 2 years, depending on region).
- Covers defects in materials and workmanship under normal use.

Technical Support:
- Email: service@adlinktech.com
- Phone: +886-2-82265877
- Fax: +886-2-82265717
- Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan
- Website: [www.adlinktech.com](http://www.adlinktech.com)

Maintenance:
- Periodically inspect connectors and cabling for wear or oxidation.
- Ensure proper grounding and shielding in high-noise environments.
- Avoid exposure to excessive humidity or dust.

Software Updates:
- Latest drivers and SDKs available from ADLINK’s software product page.
- DAQPilot and PCIS-DASK regularly updated for compatibility with new OS versions.
- DAQMaster utility provides configuration management and firmware update capabilities.

Documentation:
- User’s Manual Rev. 4.05 (Part No. 50-11037-1000)
- Updated March 28, 2012
- All specifications subject to change without notice.

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### Summary

The ADLINK PCI-7233 is a high-isolation, 32-channel digital input card engineered for industrial automation and monitoring systems requiring reliable signal isolation and event-driven input detection. With 5000 Vrms optical isolation, 10 kHz throughput, and dual COS interrupt capability, it provides robust performance in electrically noisy environments. Its non-polarity input design simplifies wiring, while comprehensive software support ensures seamless integration with Windows, Linux, and major data acquisition platforms such as LabVIEW™ and MATLAB®. The PCI-7233’s combination of durability, flexibility, and software compatibility makes it a dependable choice for industrial control, safety monitoring, and data acquisition applications.