Comprehensive Product Summary: ADLINK NuDAQ cPCI‑7249R 48‑Channel Digital I/O Card (Rear I/O)

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### 1. Product Overview

Product Name: NuDAQ cPCI‑7249R
Model Number: cPCI‑7249R
Series: NuDAQ 7248/7249R / PCI‑7224/7248/7296 Digital I/O Series
Article Number: cPCI‑7249R
Manufacturer: ADLINK Technology Inc.
Manufacturer Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan
Website: [www.adlinktech.com](http://www.adlinktech.com)
Contact: service@adlinktech.com | Tel: +886‑2‑82265877 | Fax: +886‑2‑82265717

The ADLINK cPCI‑7249R is a 3U CompactPCI 48‑channel digital input/output (DIO) card designed for industrial automation, data acquisition, and control applications. It is part of ADLINK’s NuDAQ family of PCI and CompactPCI digital I/O boards, offering high‑reliability TTL/DTL‑compatible digital I/O with rear I/O connectivity via a rugged 100‑pin SCSI‑II connector. The cPCI‑7249R extends the functionality of the cPCI‑7248 by adding rear I/O capability and latch registers, enabling flexible integration in CompactPCI systems with rear transition modules.

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### 2. Key Features

Digital I/O Capabilities
- 48‑channel TTL/DTL‑compatible digital I/O lines.
- Emulates two industry‑standard Intel 8255 Programmable Peripheral Interface (PPI) chips operating in Mode 0.
- Buffered circuits for enhanced drive capability and signal integrity.
- Direct interface with OPTO‑22‑compatible I/O modules for isolation and field interfacing.
- Output status read‑back for verification of output states.

Timer/Counter and Interrupt System
- Integrated 8254 programmable timer/counter with three 16‑bit counters.
- 32‑bit cascaded timer for watchdog or periodic interrupt generation.
- 16‑bit event counter for external event counting or frequency measurement.
- Programmable interrupt source selection with dual interrupt system (INT1 and INT2).
- Supports external event and timer‑based interrupt generation.

Rear I/O and Latch Functionality
- Rear I/O through 100‑pin SCSI‑II connector on CompactPCI J2 interface.
- Includes R7249 rear I/O transition board (DB‑100RU) with two 50‑pin OPTO‑22 connectors.
- External latch input (EXTCLK, pin 99) for capturing digital input data synchronously.

Power and Protection
- Provides +5 V and +12 V auxiliary power on OPTO‑22 connectors for external modules.
- On‑board resettable fuses protect external devices from overcurrent or short circuits.

Software and Driver Support
- Comprehensive driver suite for Windows 95/98/NT/2000/XP, Linux, and DOS.
- Compatible with LabVIEW®, HP‑VEE™, DASYLab™, InTouch™, InControl™, ISaGRAF™, and OPC environments.
- Includes PCIS‑DASK and PCIS‑DASK/X driver libraries, ActiveX (DAQBench™) controls, and C/C++/VB/Delphi APIs.

Industrial Design
- Compact 3U form factor for CompactPCI backplanes.
- Rugged construction with rear I/O option for high‑density, cable‑free front panels.
- Plug‑and‑Play PCI configuration—no manual address or IRQ settings required.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| I/O Channels | 48‑bit TTL/DTL digital I/O |
| Digital Input Voltage | Logic High: 2.0 V – 5.25 V; Logic Low: 0.0 V – 0.8 V |
| Digital Input Current | High: 20 µA; Low: –0.2 mA |
| Digital Output (Ports A/B) | Logic High ≥ 2.4 V @ –2.6 mA; Logic Low ≤ 0.5 V @ 24 mA |
| Digital Output (Port C) | Logic High ≥ 2.4 V @ –15 mA; Logic Low ≤ 0.4 V @ 24 mA |
| Bus Interface | 3U 32‑bit CompactPCI (PICMG 2.0 compliant) |
| Connector Type | 100‑pin SCSI‑II (rear I/O) |
| Form Factor | 3U CompactPCI board (100 mm × 160 mm) |
| Power Consumption | 700 mA @ +5 V DC (typical) |
| Data Transfer Rate | Up to 500 KB/s |
| Operating Temperature | 0 °C – 60 °C |
| Storage Temperature | –20 °C – 80 °C |
| Humidity | 5 % – 95 % RH, non‑condensing |
| Power Outputs | +5 V and +12 V (0.5 A max per connector, resettable fuse protected) |
| PCB Dimensions | 3U CompactPCI form factor, J2 rear I/O option |
| Weight | Approx. 200 g (board only) |

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### 4. Functionality

Operating Principle
The cPCI‑7249R functions as a dual‑8255‑compatible digital I/O interface, providing 48 programmable lines grouped into two 24‑bit ports (PPI1 and PPI2). Each PPI contains three 8‑bit ports (A, B, and C), with Port C further divisible into upper and lower 4‑bit nibbles. Each port can be independently configured as input or output via software control words.

Use Cases and Applications
- Industrial process monitoring and control.
- Machine automation and digital signal interfacing.
- Switch, relay, and contact closure monitoring.
- Keyboard or panel input scanning.
- Integration with OPTO‑22 modules for isolated I/O.
- Combined with A/D and D/A modules for hybrid data acquisition systems.

Compatibility
- Fully software‑compatible with ADLINK PCI‑7248 and PCI‑7296 boards.
- Supports CompactPCI backplanes with rear I/O transition modules.
- Compatible with ADLINK termination boards (DIN‑100S, TB‑24R, TB‑24P, TB‑16P8R).

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### 5. Components & Accessories

Included Items
- cPCI‑7249R CompactPCI card.
- ADLINK software CD (drivers, manuals, utilities).
- Software Installation Guide.
- DB‑100RU rear I/O transition board (R7249) with two 50‑pin OPTO‑22 connectors.

Optional Accessories
- DIN‑100S: 100‑pin SCSI‑type termination board.
- TB‑24R / DIN‑24R: 24‑channel relay output boards.
- TB‑24P / DIN‑24P: 24‑channel opto‑isolated input boards.
- TB‑16P8R: 16 opto‑isolated inputs + 8 relay outputs.
- DIN‑50S / TB‑24: General‑purpose 50‑pin termination boards.

Connectors
- Rear I/O 100‑pin SCSI‑II connector (J2).
- Transition board connectors: two 50‑pin OPTO‑22‑compatible IDC headers.

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### 6. Installation & Setup

System Requirements
- CompactPCI chassis with 32‑bit 3U slots.
- Slot with rear I/O extension for full cPCI‑7249R functionality.
- Operating system: Windows 95/98/NT/2000/XP or Linux.

Installation Procedure
1. Power off the CompactPCI system and disconnect peripherals.
2. Insert the cPCI‑7249R into a 32‑bit CompactPCI slot with rear I/O capability.
3. Secure the card using the chassis mounting screws.
4. Install the R7249 rear I/O transition board in the corresponding rear slot.
5. Connect OPTO‑22 or termination boards to the rear connectors.
6. Power on the system; the Plug‑and‑Play BIOS automatically assigns I/O and IRQ resources.
7. Install ADLINK’s PCIS‑DASK or PCIS‑DASK/X drivers from the provided CD.

Jumper Configuration
- JAx/JBx/JCx: Define power‑on state (input pulled high, low, or floating).
- JP1–JP4: Configure +12 V pins on OPTO‑22 connectors as power or ground.
- Default: all ports pulled high; +12 V pins connected to ground.

Static Precautions
- Handle the board on a grounded anti‑static mat.
- Use a grounded wrist strap during installation.

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### 7. Performance & Capabilities

Digital I/O Performance
- 48 independent TTL/DTL lines configurable as input or output.
- Buffered outputs for higher current drive (up to 24 mA sink).
- Input read‑back and output verification supported.
- Supports external latch input (EXTCLK) for synchronized data capture.

Timer/Counter
- One 8254 chip providing three 16‑bit counters.
- Timers #1 and #2 cascaded for 32‑bit timing (2 MHz base clock).
- Frequency range: 0.000466 Hz – 500 kHz.
- Counter #0 usable as event counter (P1C4 input).

Interrupt System
- Dual interrupt channels (INT1, INT2) multiplexed to a single PCI IRQ.
- Programmable sources:
- INT1: P1C0, P1C3, or event counter.
- INT2: P2C0, P2C3, or timer output.
- Trigger modes: falling edge, combined logic, or counter terminal count.
- Software‑accessible interrupt status and clear registers.

Power Output Protection
- Resettable fuses on +5 V and +12 V outputs (0.5 A limit).
- Automatic recovery after overload removal.

Data Throughput
- Maximum transfer rate: 500 KB/s via PCI bus.

Limitations
- Non‑isolated I/O (requires external OPTO‑22 modules for isolation).
- Rear I/O requires compatible CompactPCI backplane and transition module.

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### 8. Standards & Compliance

- Bus Standard: CompactPCI (PICMG 2.0 R3.0 compliant, 32‑bit).
- Electrical Interface: TTL/DTL logic levels per IEEE Std 91.
- EMC/ESD: Designed for industrial environments; use with grounded chassis.
- Software Standards:
- Windows driver model (WDM) compliant.
- Linux shared library (PCIS‑DASK/X).
- OPC, DDE, and ActiveX interfaces supported.
- Environmental: 0 °C – 60 °C operation, 5 %–95 % RH non‑condensing.
- Safety: Resettable fuse protection on auxiliary power outputs.

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### 9. Additional Information

Software Support
- PCIS‑DASK: Windows 98/NT/2000/XP driver and DLL library.
- PCIS‑DASK/X: Linux shared library and driver.
- PCIS‑LVIEW: LabVIEW® VI library.
- PCIS‑VEE: HP‑VEE™ user objects.
- DAQBench™: ActiveX controls for VB/VC++.
- PCIS‑DDE / PCIS‑OPC / PCIS‑ISG / PCIS‑ICL: DDE, OPC, ISaGRAF™, and InControl™ drivers.

Programming Interfaces
- C/C++ libraries for DOS and Windows.
- Visual Basic and Delphi DLL interfaces.
- Functions include initialization, digital input/output, port configuration, interrupt control, timer setup, and software reset.

Maintenance
- No periodic calibration required.
- Keep connectors clean and free of debris.
- Inspect fuses if external power outputs fail.

Warranty
- Two‑year limited warranty from shipment date.
- Covers defects in materials and workmanship.
- Excludes damage from misuse, static discharge, or unauthorized repair.
- RMA service available via [ADLINK RMA portal](http://rma.adlinktech.com).

Support
- Technical assistance via email: service@adlinktech.com.
- Manuals, drivers, and updates downloadable from ADLINK’s website.

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### Summary

The ADLINK NuDAQ cPCI‑7249R is a robust, high‑performance 48‑channel digital I/O CompactPCI card engineered for industrial automation and control systems requiring reliable, high‑speed digital interfacing. With its rear I/O architecture, dual interrupt system, programmable timer/counter, and comprehensive software ecosystem, it provides a flexible platform for digital signal acquisition, event counting, and control tasks. Its compatibility with OPTO‑22 modules and multiple software environments makes it ideal for integration into complex, mixed‑signal data acquisition systems.

Key Advantages:
- 48 TTL/DTL I/O channels with rear I/O connectivity.
- Dual interrupt and 32‑bit timer for advanced event handling.
- Full driver and API support across Windows and Linux.
- Compact 3U form factor with industrial‑grade reliability.

Typical Applications:
- Factory automation and process control.
- Machine status monitoring and digital control.
- Test and measurement systems.
- Embedded CompactPCI data acquisition platforms.

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End of Product Summary – ADLINK cPCI‑7249R