Comprehensive Product Summary: ADLINK PXI-2502 Multi-Function Data Acquisition Card

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### 1. Product Overview

Product Name: PXI-2502
Model Number: PXI-2502
Series: PXI/DAQ/DAQe-2500 Series (NuDAQ-2500 Family)
Article Number: PXI-2502
Manufacturer: ADLINK Technology Inc.
Product Type: PXI Bus Multi-Function Data Acquisition (DAQ) Card
Description: PXI DA Card 8 Channels, 1 MS/s, 12-bit simultaneous waveform generation with analog and digital I/O, auto-calibration, and multi-trigger support.
Intended Use: High-performance analog output and multi-function data acquisition for laboratory automation, industrial process control, and signal analysis.

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### 2. Key Features

- PXI Specification Compliance: Fully compliant with PXI Specification Rev. 2.2, ensuring compatibility with standard PXI chassis and controllers.
- High-Speed Analog Output: 8-channel, 12-bit resolution, maximum update rate of 1 MS/s per channel.
- Analog Input Capability: 4-channel, 14-bit resolution, maximum sampling rate of 400 kS/s.
- Simultaneous Waveform Generation: Hardware-based arbitrary waveform generation with 16K-sample D/A FIFO buffer.
- Auto-Calibration: Fully automatic internal calibration using a 14-bit reference DAC and 5 V precision reference source (±2 ppm/°C).
- Flexible Triggering: Supports software, external analog/digital, and SSI (System Synchronization Interface) triggers.
- Digital I/O: 24-channel TTL/CMOS compatible programmable I/O (8255 PIO compatible).
- Timer/Counter: Two 16-bit general-purpose up/down counters with 40 MHz internal or up to 10 MHz external clock.
- Scatter-Gather DMA: High-speed data transfer for both analog input and output, minimizing CPU load.
- Synchronization: Multiple card synchronization via SSI bus or PXI trigger bus.
- Software Support: Compatible with LabVIEW®, MATLAB®, C/C++, Visual Basic, and Visual Studio.NET.
- Operating Systems: Windows 7/8 (x86/x64) and Linux.
- Utility Software: AD-Logger for data logging and analysis.
- Plug-and-Play Configuration: Automatic resource allocation via PXI bus; no jumper settings required.
- Robust Design: Short-circuit protection, overvoltage protection, and stable operation under industrial conditions.

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### 3. Technical Specifications

Analog Output (AO):
- Channels: 8 voltage outputs
- Resolution: 12-bit
- Output Ranges: 0–10 V, ±10 V, 0–AOEXTREF, ±AOEXTREF
- Maximum Update Rate: 1 MS/s
- Slew Rate: 20 V/μs
- Settling Time: 3 μs to ±0.5 LSB accuracy
- Offset Error: ±8 mV (after calibration ±2 mV typical)
- Gain Error: ±0.04% of full-scale range (after calibration ±0.02%)
- Output Drive Capability: ±5 mA
- Load Stability: Up to 1500 pF passive load
- Output Impedance: ≤0.1 Ω
- Protection: Short-circuit to ground
- FIFO Buffer Size: 16 K samples
- Data Transfer: Programmed I/O and scatter-gather DMA
- Trigger Sources: Software, external analog/digital, SSI bus
- Trigger Modes: Post-trigger, delay-trigger, repeated trigger

Analog Input (AI):
- Channels: 4 single-ended
- Resolution: 14-bit, no missing codes
- Sampling Rate: Up to 400 kS/s
- Input Ranges: ±10 V (bipolar), 0–10 V (unipolar)
- Offset Error: ±4 mV (after calibration ±1 mV)
- Gain Error: ±0.1% of FSR (after calibration ±0.02%)
- Input Impedance: 1 GΩ / 6 pF
- Overvoltage Protection: ±30 V continuous (power on), ±15 V (power off)
- Coupling: DC
- FIFO Buffer Size: 2 K samples
- Trigger Sources: Software, external analog/digital, SSI bus
- Trigger Modes: Post-trigger, delay-trigger, repeated trigger
- Data Transfer: Polling or scatter-gather DMA

Digital I/O (DIO):
- Channels: 24 programmable I/O (8255 compatible)
- Logic Levels: TTL/CMOS (5 V compatible)
- Input Voltage: VIL ≤ 0.8 V, VIH ≥ 2.0 V
- Output Voltage: VOL ≤ 0.5 V @ 8 mA, VOH ≥ 2.7 V @ 400 μA
- Data Transfer: Programmed I/O

Timer/Counter (GPTC):
- Channels: 2 independent 16-bit up/down counters
- Compatibility: TTL/CMOS
- Base Clock: 40 MHz internal, external up to 10 MHz
- Modes: Event counting, pulse generation, frequency measurement, gated pulse, retriggered pulse, and continuous pulse generation

General Specifications:
- Auto-Calibration: Yes (+5 V reference, ±2 ppm/°C)
- Dimensions: 160 mm × 100 mm (PXI-2500 series)
- Connector: 68-pin VHDCI female (AMP-787254-1)
- Operating Temperature: 0°C to 55°C
- Storage Temperature: -20°C to 70°C
- Humidity: 5–95%, non-condensing
- Power Requirements: +5 V @ 2.12 A typical
- Weight: Approx. 0.35 kg

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### 4. Functionality

The PXI-2502 functions as a high-performance analog output and data acquisition module for PXI systems. It integrates analog output, analog input, digital I/O, and timing functions into a single card.

Operation Principles:
- A/D Conversion: Converts analog signals into 14-bit digital data using an LTC1416 ADC. Supports software polling and programmable scan modes with precise timing control.
- D/A Conversion: Generates analog waveforms using 12-bit DACs (AD7945). Supports hardware-controlled waveform generation with synchronized multi-channel output.
- Triggering: Supports multiple trigger sources and modes for precise timing control in both acquisition and generation.
- DMA Transfer: Bus-mastering DMA enables high-speed data transfer directly to system memory, reducing CPU overhead.
- Synchronization: SSI bus allows multiple PXI-2502 cards to operate in synchronized mode for multi-channel or multi-system applications.

Applications:
- Arbitrary waveform generation
- Transient signal measurement
- Automated test equipment (ATE)
- Process control and monitoring
- Biomedical signal analysis
- Laboratory automation and research instrumentation

Compatibility:
- PXI chassis and controllers compliant with PXI Rev. 2.2
- Software environments: LabVIEW®, MATLAB®, Visual Studio®, C/C++, and Linux-based systems

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### 5. Components & Accessories

Included Items:
- PXI-2502 DAQ card
- ADLINK All-in-One CD (drivers, SDKs, utilities)
- Software Installation Guide
- User’s Manual

Optional Accessories:
- Terminal Boards:
- DIN-68S-01 (68-pin screw terminal board)
- ACL-10568-1 (shielded cable assembly)
- ACL-SSI-2/3/4 (synchronization interface cables)
- Cables: 68-pin VHDCI shielded cables for analog/digital I/O connectivity

Connectors:
- 68-pin VHDCI female connector for analog, digital, and timing signals
- Supports external reference inputs (AOEXTREF_A/B), analog triggers (EXTATRIG), and auxiliary function inputs (AFI0/AFI1)

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### 6. Installation & Setup

Requirements:
- PXI chassis with available slot
- Supported operating system (Windows 7/8 or Linux)
- Administrative privileges for driver installation

Installation Steps:
1. Power off the PXI chassis.
2. Insert the PXI-2502 card into an available PXI slot.
3. Secure the module and power on the chassis.
4. The system automatically detects the card (Plug-and-Play).
5. Install drivers and software from the ADLINK CD.
6. Verify installation using the PCI_SCAN utility.

Configuration:
- No jumper settings required; all configurations are software-controlled.
- IRQ and DMA resources are automatically assigned by the PXI controller.
- Use AD-Logger or LabVIEW drivers for configuration and testing.

Mounting Options:
- Standard PXI slot mounting with front-panel VHDCI connector access.

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### 7. Performance & Capabilities

Analog Output Performance:
- Update Rate: 1 MS/s per channel
- Slew Rate: 20 V/μs
- Settling Time: 3 μs to ±0.5 LSB
- Output Stability: Maintains accuracy across temperature variations due to auto-calibration

Analog Input Performance:
- Sampling Rate: 400 kS/s
- Resolution: 14-bit
- Input Protection: ±30 V continuous

Digital I/O Performance:
- 24 channels, 8255-compatible, TTL/CMOS levels
- Supports high-speed digital control and monitoring

Timer/Counter Performance:
- 16-bit resolution, up to 10 MHz external clock
- Supports event counting, pulse-width measurement, and frequency generation

Efficiency:
- Scatter-gather DMA ensures continuous data streaming without CPU bottlenecks.
- Hardware-based waveform generation minimizes software latency.

Limitations:
- Analog input limited to 4 channels (single-ended)
- Maximum analog input rate 400 kS/s (shared across channels)
- External reference voltage limited to ±10 V

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### 8. Standards & Compliance

- PXI Specification: Rev. 2.2 compliant
- Bus Interface: 32-bit, 3.3 V/5 V PCI signaling
- Electrical Compliance: TTL/CMOS compatible I/O
- Environmental Compliance: Designed for industrial temperature and humidity ranges
- Safety & EMC: Meets CE and FCC requirements (manufacturer standard)
- Software Standards: Compatible with NI LabVIEW®, MATLAB®, and standard C/C++ APIs

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### 9. Additional Information

Warranty:
- Standard two-year limited warranty (one year in China)
- Covers manufacturing defects and hardware failures under normal use
- Excludes damage from misuse, improper installation, or environmental factors

Support & Maintenance:
- Global technical support via ADLINK regional offices
- Email: service@adlinktech.com
- Free driver and software updates available on [www.adlinktech.com](http://www.adlinktech.com)
- Calibration recommended every 12 months or after significant environmental changes

Maintenance:
- Keep connectors clean and free of dust
- Perform periodic auto-calibration for optimal accuracy
- Store in anti-static packaging when not in use

Software Updates:
- Driver and SDK updates provided through ADLINK’s website
- Compatible with D2K-DASK (Windows), D2K-DASK/X (Linux), DAQ-LVIEW PnP (LabVIEW), and D2K-OCX (ActiveX)

Technical Support Contacts:
- ADLINK Technology Inc. (Taiwan): +886-2-8226-5877
- ADLINK Technology America: +1-866-4-ADLINK
- ADLINK Europe: +49-211-4955552
- ADLINK Singapore: +65-6844-2261
- ADLINK India: +91-80-57605817
- ADLINK China Offices: Beijing, Shanghai, Shenzhen

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### Summary

The ADLINK PXI-2502 is a high-performance, multi-function PXI data acquisition card designed for precision analog output and measurement applications. With 8 channels of 12-bit analog output at 1 MS/s, 4 channels of 14-bit analog input at 400 kS/s, and integrated digital I/O and timing functions, it provides a complete solution for waveform generation, signal analysis, and process control. Its hardware-based waveform generation, auto-calibration, and scatter-gather DMA capabilities ensure high accuracy, low latency, and efficient data throughput. The PXI-2502’s robust design, wide software support, and synchronization features make it ideal for demanding laboratory, industrial, and research environments.