Comprehensive Product Summary: ADLINK PCI-7443 Isolated Digital Input/Output Card

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### 1. Product Overview

Product Name: PCI-7443
Model: PCI-7443
Series: NuDAQ® PCI-7440 Series (includes PCI-7442, PCI-7443, PCI-7444)
Article Number: PCI-7443 / Part No. 50-11218-2000
Manufacturer: ADLINK Technology Inc.
Product Type: PCI Bus Isolated Digital Input/Output Card
Revision: Manual Rev. 2.01 (March 12, 2007)
Manufacturer Website: [www.adlinktech.com](http://www.adlinktech.com)

The ADLINK PCI-7443 is a high-density, isolated digital input card designed for industrial automation and data acquisition systems. It provides 128 optically isolated digital input channels and 32 programmable TTL I/O channels, offering robust electrical isolation, high reliability, and flexible interfacing for machine control, signal monitoring, and laboratory automation applications.

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### 2. Key Features

- High-Density Digital Input: 128 optically isolated digital input channels for large-scale signal acquisition.
- Optical Isolation: 1,250 V RMS isolation between channels and system logic, ensuring protection from high-voltage transients and ground loops.
- Change-of-State (COS) Detection: Programmable COS interrupt detection for all 128 input channels, enabling event-driven data acquisition without continuous polling.
- Board ID Function: Hardware DIP switch for unique board identification when multiple PCI-744x cards are installed in a single system.
- TTL I/O Channels: 32 programmable TTL/3.3 V TTL channels for auxiliary digital control or status monitoring.
- PCI Bus Interface: Fully compliant with 32-bit 3.3 V/5 V PCI bus, Plug-and-Play (PnP) compatible.
- Software Support: Compatible with ADLINK’s PCIS-DASK driver library, DAQ-LVIEW PnP for LabVIEW®, and DAQBench™ ActiveX controls.
- Industrial-Grade Design: Wide operating temperature range (0°C to 60°C), non-condensing humidity tolerance (5–85%), and robust PCB construction.
- COS Interrupt Architecture: Four independent COS banks (each 32 channels) with interrupt generation and latch registers for precise event capture.
- Ease of Integration: Standard PCI form factor (174.7 mm × 106.7 mm) for easy installation in industrial PCs.
- Comprehensive Software Tools: Includes drivers, DLLs, and example code for Windows® 98/NT/2000/XP environments.

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### 3. Technical Specifications

Digital Input (Optically Isolated):
- Channels: 128
- Input Voltage Range: Logic High = 5–28 V (non-polarity), Logic Low = 0–1.5 V (non-polarity)
- Input Resistance: 4.7 kΩ
- Isolation Voltage: 1,250 V RMS
- Interrupt Source: Change-of-State (COS) detection
- Input Sampling Rate: 33 MHz (minimum pulse width 31 ns for valid detection)

TTL I/O:
- Channels: 32 programmable I/O lines
- Logic Level: TTL / 3.3 V TTL compatible
- Current Drive: 4 mA per channel (max)
- Data Transfer: Programmed I/O
- Connectors: JP3 and JP4 (20-pin headers each)

General:
- Bus Interface: 32-bit PCI bus (3.3 V / 5 V signaling)
- Dimensions: 174.7 mm (L) × 106.7 mm (W)
- Power Consumption: +5 V @ 550 mA (typical)
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -40°C to 80°C
- Humidity: 5%–85% RH, non-condensing
- Isolation Protection: 1,250 V RMS
- Form Factor: Standard PCI card

Connectors:
- CN1: 64-CH isolated digital input connector (IDI 0–63)
- CN2: 64-CH isolated digital input connector (IDI 64–127)
- JP3: 16-CH TTL I/O (TTLIO_0–15)
- JP4: 16-CH TTL I/O (TTLIO_16–31)
- Connector Type: 68-pin VHDCI female connectors (x4 total on bracket)

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### 4. Functionality

Operational Overview:
The PCI-7443 functions as a high-density digital input interface for industrial control systems. Each input channel is optically isolated via photo-couplers, allowing non-polarity-sensitive voltage detection from 5 V to 28 V. The card detects logic transitions and can generate interrupts based on state changes (COS events).

Change-of-State (COS) Detection:
- Detects transitions from HIGH→LOW or LOW→HIGH on any enabled input line.
- Four COS banks (each 32 channels) are cascaded to a single IRQ line via CPLD logic.
- COS latch registers capture input states at the time of interrupt, eliminating the need for continuous polling.
- COS detection sampling frequency: 33 MHz (minimum pulse width 31 ns).

TTL I/O Functionality:
- 32 programmable TTL channels can be configured individually as input or output.
- TTL I/O direction and status are software-configurable via dedicated registers.
- TTL I/O channels are suitable for low-voltage control signals, logic interfacing, or auxiliary monitoring.

Applications:
- Machine automation and process control
- Industrial ON/OFF signal monitoring
- Relay and solenoid control (via external interface)
- Laboratory instrumentation and data logging
- Signal switching and event detection systems

Compatibility:
- Compatible with Windows® 98/NT/2000/XP via PCIS-DASK driver library.
- Supports LabVIEW® integration through DAQ-LVIEW PnP.
- ActiveX control support via DAQBench™ for VB/VC++ environments.
- Fully Plug-and-Play compliant PCI interface.

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### 5. Components & Accessories

Package Contents:
- PCI-7443 card
- ACL-10337 DB37F bracket
- ADLINK All-in-One CD (drivers, manuals, software libraries)
- User’s Manual

Optional Accessories:
- Shielded VHDCI cables for CN1/CN2 connectors
- Terminal boards for field wiring (sold separately)
- Additional PCI-744x cards for multi-board configurations

Connectors:
- CN1/CN2: 68-pin VHDCI female connectors for isolated digital inputs
- JP3/JP4: 20-pin headers for TTL I/O channels
- S1: 4-bit DIP switch for Board ID configuration

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### 6. Installation & Setup

System Requirements:
- Available 32-bit PCI slot (3.3 V or 5 V signaling)
- Compatible operating system (Windows® 98/NT/2000/XP)
- ADLINK PCIS-DASK driver installed

Installation Steps:
1. Power off the host PC and discharge static electricity.
2. Insert the PCI-7443 card into an available PCI slot.
3. Secure the bracket and connect field wiring to CN1/CN2 connectors.
4. Configure the Board ID DIP switch (S1) if multiple cards are installed.
5. Power on the system and install the ADLINK driver from the All-in-One CD.
6. Verify installation using ADLINK’s diagnostic utilities or sample programs.

Board ID Configuration:
- 4-bit DIP switch (S1) allows up to 16 unique board IDs (0–15).
- Default setting: 1111 (Board ID = 0).
- Each bit corresponds to ON/OFF positions for binary ID assignment.

Mounting Options:
- Standard PCI slot mounting with rear bracket connectors.
- Compatible with industrial PC chassis and rackmount systems.

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### 7. Performance & Capabilities

Speed & Responsiveness:
- Input sampling rate: 33 MHz (minimum detectable pulse width 31 ns).
- COS interrupt latency determined by PCI bus and system ISR response.
- TTL I/O switching speed suitable for standard digital control applications.

Capacity:
- 128 isolated digital input channels.
- 32 programmable TTL I/O channels.
- Supports multiple PCI-744x cards in one system (unique Board ID per card).

Efficiency:
- COS interrupt mechanism reduces CPU load by eliminating polling.
- Optical isolation ensures signal integrity and noise immunity.
- Low power consumption (550 mA @ +5 V typical).

Limitations:
- No isolated digital output channels (input-only configuration).
- Watchdog timer and safety DO functions available only on PCI-7442/7444 models.
- Requires external wiring for field signal interfacing.

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### 8. Standards & Compliance

Electrical & Mechanical Standards:
- PCI Local Bus Specification, Revision 2.2 compliant
- 32-bit PCI interface, 33 MHz operation
- 3.3 V / 5 V signaling compatibility

Isolation & Safety:
- Optical isolation: 1,250 V RMS between field and logic sides
- Input protection up to 28 V DC

Environmental Compliance:
- Operating temperature: 0°C to 60°C
- Storage temperature: -40°C to 80°C
- Humidity: 5–85% RH, non-condensing

Certifications:
- CE and FCC compliance (typical for ADLINK PCI cards)
- RoHS-compliant manufacturing process

Software Standards:
- Compatible with Windows® driver model (WDM)
- Supports ActiveX, DLL, and LabVIEW® VI interfaces

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### 9. Additional Information

Warranty:
- Standard limited two-year warranty (one year in China).
- Warranty covers manufacturing defects and hardware failures under normal use.
- Exclusions: misuse, unauthorized repair, environmental damage, or altered serial numbers.
- Customers responsible for shipping costs to ADLINK service centers.
- RMA process available online at [http://rma.adlinktech.com/policy](http://rma.adlinktech.com/policy).

Support & Maintenance:
- Global technical support via regional ADLINK offices (Taiwan, USA, Europe, Singapore, India, China).
- Email support: service@adlinktech.com
- Software updates and documentation available on ADLINK’s website.
- Preventive maintenance: periodic inspection of connectors and static protection during handling.

Software Updates:
- PCIS-DASK driver updates for new Windows versions.
- LabVIEW® VI library updates for compatibility with newer releases.
- Firmware updates (if applicable) provided through ADLINK support.

Safety & Handling:
- Handle the card using anti-static precautions.
- Avoid exposure to high humidity or corrosive environments.
- Ensure proper grounding of the host system to maintain isolation integrity.

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### Summary

The ADLINK PCI-7443 is a robust, high-density isolated digital input card engineered for industrial automation, machine control, and data acquisition systems requiring reliable, high-speed digital signal monitoring. With 128 optically isolated input channels, 32 programmable TTL I/O lines, and programmable Change-of-State (COS) interrupt detection, it provides a flexible and efficient interface between industrial sensors and PC-based control systems. Its 1,250 V RMS isolation, PCI bus compliance, and comprehensive software support make it ideal for demanding industrial environments where electrical noise immunity and system reliability are critical.

The PCI-7443 integrates seamlessly into ADLINK’s NuDAQ® ecosystem, offering consistent performance, easy configuration, and long-term support for automation engineers and system integrators.