Comprehensive Product Summary: ADLINK PXI-2208 Ultra High-Density Analog Input Card

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### 1. Product Overview

Product Name: PXI-2208
Model: PXI-2208
Series: DAQ-/DAQe-/PXI-22XX Series
Article Number: PXI-2208
Manufacturer: ADLINK Technology Inc.
Product Type: PXI Bus Analog-to-Digital (A/D) Data Acquisition Card
Form Factor: PXI (CompactPCI)
Compliance: PXI Specification Revision 2.2

The ADLINK PXI-2208 is a high-density, 12-bit, 3 MS/s analog input card designed for precision data acquisition and signal analysis applications. It belongs to ADLINK’s DAQ-/DAQe-/PXI-22XX family, offering a balance of high channel count, sampling speed, and flexible triggering and synchronization capabilities. The PXI-2208 is optimized for use in PXI-based modular instrumentation systems and supports both single-ended (SE) and differential (DI) analog input configurations.

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### 2. Key Features

- High Channel Density:
96 single-ended or 48 differential analog input channels, with software-selectable mixed-mode operation.

- High-Speed Sampling:
Maximum sampling rate of 3 MS/s (single channel), enabling high-speed transient signal capture.

- 12-Bit Resolution:
High-precision 12-bit A/D conversion with no missing codes, ensuring accurate signal representation.

- Programmable Gain and Range:
Software-selectable gain settings (×1, ×2, ×4, ×5, ×8, ×10, ×20, ×40, ×50, ×200) and multiple bipolar/unipolar input ranges.

- Auto Calibration:
Fully automatic self-calibration with onboard 5.000 V reference (±2 ppm/°C), ensuring long-term accuracy and stability.

- FIFO Buffer:
1 k-sample onboard A/D FIFO for efficient data buffering and high-speed acquisition.

- Flexible Triggering:
Supports software, external analog, and digital triggers with multiple trigger modes (pre-, post-, middle-, and delay-trigger).

- Synchronization:
Multi-card synchronization via PXI trigger bus or System Synchronization Interface (SSI) bus.

- Digital I/O:
24-channel TTL-compatible programmable digital input/output (8255 PIO).

- Scatter-Gather DMA:
High-speed data transfer using bus-mastering DMA with scatter/gather capability for large data sets.

- Software Support:
Compatible with ADLINK’s D2K-DASK driver library, LabVIEW®, MATLAB®, C/C++, Visual Basic, and Visual Studio.NET.

- Operating System Support:
Windows 7/8 (x86/x64) and Linux.

- Plug-and-Play PXI Integration:
Fully compliant with PXI Specification Rev. 2.2 for seamless integration into PXI chassis.

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### 3. Technical Specifications

Analog Input (AI):
- Channels: 96 SE or 48 DI (software-selectable mixed mode)
- Resolution: 12 bits, no missing codes
- Sampling Rate: Up to 3 MS/s (single channel)
- Input Coupling: DC
- Input Impedance: 1 GΩ / 100 pF
- Input Ranges:
- Bipolar: ±10 V, ±5 V, ±2.5 V, ±2 V, ±1.25 V, ±1 V, ±0.5 V, ±0.25 V, ±0.2 V, ±0.05 V
- Unipolar: 0–10 V, 0–5 V, 0–4 V, 0–2.5 V, 0–1 V, 0–0.5 V, 0–0.4 V, 0–0.1 V
- Gain Error: ±0.06% of FSR (after calibration)
- Offset Error: ±2 mV (after calibration)
- Overvoltage Protection: ±30 V continuous (power on), ±15 V (power off)
- Common Mode Range: ±11 V maximum
- CMRR: 83–93 dB (DC–60 Hz, depending on range)
- Settling Time: 1–5 µs to 0.1% error (typical)
- FIFO Buffer: 1 k-sample A/D FIFO
- Channel Gain Queue: 1024 configurations
- Data Transfer: Polling or scatter-gather DMA

Digital I/O:
- Channels: 24 programmable I/O (8255 PIO)
- Logic Levels: TTL-compatible (5 V)
- Input Voltage:
- Logic Low ≤ 0.8 V
- Logic High ≥ 2.0 V
- Output Voltage:
- Logic Low ≤ 0.5 V @ 8 mA
- Logic High ≥ 2.7 V @ 400 µA

Triggering:
- Sources: Software, external analog, external digital, SSI bus
- Modes: Pre-trigger, post-trigger, middle-trigger, delay-trigger, repeated trigger
- Analog Trigger Input: ±10 V range, 8-bit resolution, programmable hysteresis
- Digital Trigger: TTL/CMOS compatible, 10 ns minimum pulse width
- Trigger Bandwidth: 400 kHz

Synchronization:
- Interface: PXI trigger bus or SSI (System Synchronization Interface)
- SSI Lines: 7 bi-directional timing signals (TIMEBASE, ADCONV, SCAN_START, AD_TRIG, DA_TRIG, DAWR)
- Multi-Card Sync: Master-slave configuration for up to four cards

Physical & Environmental:
- Dimensions: 160 mm × 100 mm (excluding connectors)
- Connectors: Two 68-pin VHDCI female connectors
- Operating Temperature: 0°C to 55°C
- Storage Temperature: –20°C to 70°C
- Humidity: 5–95% non-condensing
- Power Requirements: +5 VDC @ 0.95 A typical
- Form Factor: PXI (CompactPCI standard)

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### 4. Functionality

The PXI-2208 functions as a high-speed analog data acquisition module for PXI systems. It converts analog signals into digital data using a 12-bit A/D converter and stores them in an onboard FIFO buffer. The card supports both single-ended and differential input configurations, allowing flexible signal connection for various sensor types.

Use Cases:
- Transient signal measurement
- Automated test equipment (ATE)
- Process control and monitoring
- Biomedical and biotech instrumentation
- Automotive and cable testing
- Laboratory automation and research

Operation Modes:
- Software Polling Mode: Single-sample acquisition controlled by software.
- Scan Acquisition Mode: Continuous or triggered multi-channel sampling with programmable timing.
- Trigger Modes: Pre-, post-, middle-, and delay-trigger for precise event-based acquisition.
- Synchronization: Multiple PXI-2208 cards can be synchronized for simultaneous multi-channel acquisition.

Compatibility:
- PXI chassis and controllers compliant with PXI Specification Rev. 2.2.
- Compatible with ADLINK terminal boards (DIN-68S-01, ACL-10568-1) and SSI cables (ACL-SSI-2/3/4).

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### 5. Components & Accessories

Included Items:
- PXI-2208 Data Acquisition Card
- ADLINK All-in-One Software CD
- Software Installation Guide
- User’s Manual (PDF)

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

Connectors:
- Two 68-pin VHDCI female connectors for analog and digital I/O
- PXI backplane connector for power and trigger bus
- SSI connector (20-pin ribbon) for synchronization (on DAQ form factor)

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### 6. Installation & Setup

Requirements:
- PXI chassis with available slot
- Supported operating system (Windows 7/8 or Linux)
- ADLINK D2K-DASK driver library installed

Installation Steps:
1. Power off the PXI chassis and insert the PXI-2208 into an available slot.
2. Secure the module and connect VHDCI cables to external terminal boards.
3. Power on the system; the PXI-2208 is automatically detected (plug-and-play).
4. Install ADLINK drivers and software utilities from the provided CD.
5. Configure channels, gains, and trigger modes using ADLINK’s software or supported APIs.

Configuration:
- Software-configurable channel mode (SE/DI)
- Programmable gain and input range per channel
- Trigger source and mode selection via software
- Auto-calibration routine accessible through ADLINK utilities

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### 7. Performance & Capabilities

Sampling Performance:
- 3 MS/s maximum single-channel rate
- 12-bit resolution ensures precise signal digitization
- 1 k-sample FIFO buffer for continuous high-speed acquisition

Accuracy & Stability:
- Auto-calibration compensates for temperature drift and aging
- Onboard 5.000 V reference with ±2 ppm/°C stability
- Gain error ≤ ±0.06% FSR; offset error ≤ ±2 mV

Efficiency:
- Scatter-gather DMA minimizes CPU load and maximizes throughput
- Multi-card synchronization enables scalable data acquisition systems

Limitations:
- No analog output or timer/counter functions (available on other 22XX models)
- External S&H circuits required for simultaneous sampling
- Limited to 12-bit resolution (higher resolution available in PXI-2205/2206)

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### 8. Standards & Compliance

- PXI Specification: Revision 2.2 compliant
- Bus Interface: 32-bit, 33 MHz PXI (CompactPCI)
- Electrical Compliance: 3.3 V / 5 V signaling
- Safety & EMC: Designed to meet industrial EMC and safety standards
- Environmental: RoHS compliant
- Operating Systems: Windows 7/8 (x86/x64), Linux kernel 2.4.x and later
- Software APIs: D2K-DASK, D2K-DASK/X, LabVIEW®, MATLAB®, Visual Studio.NET

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### 9. Additional Information

Calibration:
- Factory-calibrated with stored constants in EEPROM
- Auto-calibration feature for field recalibration without external equipment
- Three user-modifiable calibration banks for different environments

Warranty:
- Duration: Two years (standard ADLINK warranty)
- Coverage: Free repair for manufacturing defects
- Exclusions: Damage due to misuse, environmental factors, or unauthorized repair

Support & Maintenance:
- Global technical support via ADLINK service centers
- Software updates and driver downloads available at [www.adlinktech.com](http://www.adlinktech.com)
- Email support: service@adlinktech.com

Maintenance Recommendations:
- Perform auto-calibration after 15-minute warm-up
- Store in dry, temperature-controlled environment
- Use anti-static precautions during handling

Software Tools:
- D2K-DASK: Windows driver library for C/C++/VB/Delphi
- D2K-DASK/X: Linux shared library for C/C++
- DAQ-LVIEW PnP: LabVIEW® driver package
- DAQBench: ActiveX control suite for custom GUI development
- AD-Logger: Data logging utility for quick setup and acquisition

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### Summary

The ADLINK PXI-2208 is a robust, high-density analog input card engineered for demanding data acquisition applications requiring high channel counts, fast sampling, and precise synchronization. With 96 single-ended or 48 differential inputs, 12-bit resolution, and 3 MS/s sampling rate, it delivers exceptional performance for laboratory, industrial, and research environments. Its PXI compliance ensures seamless integration into modular test systems, while advanced features such as auto-calibration, scatter-gather DMA, and multi-card synchronization make it a versatile and scalable solution for high-performance measurement systems.