Comprehensive Product Summary – ADLINK DAQe‑2502 PCI Express Data Acquisition Card

---

### 1. Product Overview

Product Name: DAQe‑2502
Model Number: DAQe‑2502
Series: PXI/DAQ/DAQe‑2500 Series (NuDAQ‑2500 Family)
Article Number: DAQe‑2502
Manufacturer: ADLINK Technology Inc.
Product Type: PCI Express multifunction data acquisition (DAQ) card with analog output and input, digital I/O, and counter/timer functions.
Form Factor: PCI Express x1 lane, plug‑and‑play board for desktop or industrial PCs.
Intended Use: High‑performance analog waveform generation, signal measurement, and process control applications.

---

### 2. Key Features

- High‑speed analog output: 8 channels, 12‑bit resolution, up to 1 MS/s simultaneous update rate.
- Analog input capability: 4 single‑ended channels, 14‑bit resolution, up to 400 kS/s sampling rate.
- Dual‑function operation: Supports both waveform generation and signal acquisition on the same board.
- Auto‑calibration: Fully automatic internal calibration using a precision 5 V reference (±2 ppm/°C).
- Flexible voltage ranges: Bipolar ±10 V or unipolar 0–10 V ranges; external reference up to ±10 V per channel.
- Large onboard buffers: 16 k‑sample D/A FIFO and 2 k‑sample A/D FIFO for continuous streaming.
- Scatter‑gather DMA: Hardware bus‑mastering DMA for high‑throughput, low‑CPU‑load data transfer.
- Digital I/O: 24 TTL/CMOS‑compatible programmable lines (Intel 8255 PIO‑compatible).
- Timer/Counter: Two 16‑bit general‑purpose up/down counters with 40 MHz internal or 10 MHz external clock.
- Triggering: Software, external digital, external analog, or SSI (System Synchronization Interface) triggers.
- Synchronization: Multi‑card synchronization via SSI bus or PXI trigger bus.
- Software ecosystem: Drivers and SDKs for Windows 7/8 x86/x64 and Linux; supports LabVIEW, MATLAB, C/C++, Visual Basic, and Visual Studio .NET.
- Utility software: AD‑Logger for data logging and visualization.
- Plug‑and‑play PCIe: Automatic resource configuration, no jumpers required.
- Comprehensive protection: ±30 V overvoltage protection on analog inputs, short‑circuit protection on outputs.
- Compact design: 168 × 107 mm PCIe card with 68‑pin VHDCI connector.

---

### 3. Technical Specifications

Analog Output (AO)
- Channels: 8 voltage outputs
- Resolution: 12 bits
- Output ranges: 0–10 V, ±10 V, 0–AOEXTREF, ±AOEXTREF
- Maximum update rate: 1 MS/s per channel
- Slew rate: 20 V/µs
- Settling time: 3 µs to ±0.5 LSB
- Offset error: ±8 mV (max)
- Gain error: ±0.04 % of full‑scale
- Output drive: ±5 mA (max)
- Load stability: Any passive load ≤ 1500 pF
- Output coupling: DC
- Protection: Short‑circuit to ground
- FIFO buffer: 16 k samples
- Data transfer: Programmed I/O or scatter‑gather DMA
- Trigger sources: Software, external digital/analog, SSI bus
- Trigger modes: Post‑trigger, delay‑trigger, repeated trigger

Analog Input (AI)
- Channels: 4 single‑ended
- Resolution: 14 bits, no missing codes
- Sampling rate: 400 kS/s (max)
- Input ranges: ±10 V (bipolar), 0–10 V (unipolar)
- Offset error: ±4 mV
- Gain error: ±0.1 % of FSR
- Input impedance: 1 GΩ / 6 pF
- Coupling: DC
- Overvoltage protection: ±30 V (power on), ±15 V (power off)
- FIFO buffer: 2 k samples
- Data transfer: Polling or scatter‑gather DMA
- Trigger sources: Software, external digital/analog, SSI bus
- Trigger modes: Post‑trigger, delay‑trigger, repeated trigger

Digital I/O
- Channels: 24 (8255 programmable I/O)
- Logic levels: 5 V TTL/CMOS
- Direction: Configurable per port A/B/C (high/low nibbles)
- Data transfer: Programmed I/O

Timer/Counter
- Channels: 2 independent 16‑bit up/down counters
- Compatibility: 5 V TTL
- Base clock: 40 MHz internal; external clock ≤ 10 MHz
- Modes: 8 programmable modes (event counting, pulse generation, period/pulse‑width measurement, etc.)

General Specifications
- Auto‑calibration: Yes (+5 V reference, ±2 ppm/°C)
- Dimensions: 168 mm × 107 mm (6.55 in × 4.17 in) excluding connectors
- Connector: 68‑pin VHDCI female (mini‑SCSI type)
- Operating temperature: 0 °C to 55 °C (32 °F to 131 °F)
- Storage temperature: –20 °C to 70 °C (–4 °F to 158 °F)
- Humidity: 5 % to 95 %, non‑condensing
- Power requirements: +3.3 V @ 0.89 A, +12 V @ 0.76 A (typical)
- Bus interface: PCI Express x1 lane

---

### 4. Functionality

The DAQe‑2502 is a multifunction PCI Express data‑acquisition card integrating analog output, analog input, digital I/O, and counter/timer functions. It enables simultaneous waveform generation and signal measurement with precise hardware timing.

Operation Principle
- Analog Output: Each of the eight 12‑bit DAC channels can generate programmable voltage waveforms up to 1 MS/s. Hardware‑based FIFO and DMA allow continuous streaming without CPU intervention.
- Analog Input: Four 14‑bit A/D channels sample at up to 400 kS/s for signal acquisition and analysis.
- Digital I/O: 24 TTL lines provide control and status monitoring for external devices.
- Timer/Counter: Two 16‑bit counters support event counting, frequency measurement, and pulse generation.
- Triggering and Synchronization: Supports software, external digital, and analog triggers as well as multi‑board synchronization via SSI bus.

Typical Applications
- Arbitrary waveform generation and signal simulation
- Transient signal measurement and data logging
- Automated test equipment (ATE) and production testing
- Process control and industrial automation
- Biomedical and biotech instrumentation
- Laboratory and educational research systems

Compatibility
- Operating Systems: Windows 7/8 x86/x64, Linux
- Software Environments: LabVIEW, MATLAB, C/C++, Visual Basic, Visual Studio .NET
- Drivers: ADLINK D2K‑DASK (Windows), D2K‑DASK/X (Linux), DAQ‑LVIEW PnP (LabVIEW), D2K‑OCX (ActiveX)

---

### 5. Components & Accessories

Included Items
- DAQe‑2502 PCI Express DAQ card
- ADLINK All‑in‑One software CD with drivers and utilities
- Software Installation Guide
- User’s Manual (PDF and print version)

Optional Accessories
- DIN‑68S‑01: 68‑pin DIN‑rail terminal board
- ACL‑10568‑1: 68‑pin shielded cable for VHDCI connection
- ACL‑SSI‑2/3/4: SSI bus cables for multi‑card synchronization

Connectors and Pin Assignments
- 68‑pin VHDCI female connector (AMP‑787254‑1)
- Provides AO, AI, DIO, GPTC, AFI, and trigger signals
- Pin assignments include AO_0–AO_7, AI_0–AI_3, AOEXTREF_A/B, EXTATRIG, GPTC signals, AFI inputs, and 8255 Port A/B/C lines.

---

### 6. Installation & Setup

System Requirements
- PCI Express x1 slot on PC motherboard
- Supported OS (Windows 7/8 or Linux)
- Administrator rights for driver installation

Installation Procedure
1. Power off the PC and use anti‑static precautions.
2. Insert the DAQe‑2502 into an available PCIe slot.
3. Secure the card and connect the 68‑pin VHDCI cable to the terminal board.
4. Power on the system; the card is automatically detected (plug and play).
5. Install ADLINK drivers and software from the CD or website.
6. Verify installation using the AD‑Logger utility or PCI_SCAN tool.

Configuration
- No jumpers required; all settings are software‑configurable.
- IRQ and DMA resources are assigned automatically by the BIOS.
- Multiple cards can be synchronized via SSI bus or PXI trigger bus.

Mounting Options
- Standard PCIe bracket for desktop or rack‑mount industrial PCs.
- Optional DIN‑rail terminal board for field wiring.

---

### 7. Performance & Capabilities

Analog Output Performance
- Update rate up to 1 MS/s per channel (8 channels simultaneous).
- Slew rate 20 V/µs ensures fast transitions for dynamic signals.
- Settling time 3 µs to ±0.5 LSB for ±10 V step.
- Output current ±5 mA supports loads ≥ 2 kΩ and ≤ 1500 pF.
- Hardware FIFO and DMA enable continuous waveform generation without data loss.

Analog Input Performance
- 14‑bit resolution with 400 kS/s sampling rate.
- High input impedance (1 GΩ) minimizes loading effects.
- ±30 V overvoltage protection ensures robustness in industrial environments.
- Supports post‑trigger, delay‑trigger, and retrigger modes for flexible acquisition.

Digital I/O Performance
- 24 programmable lines for control and status monitoring.
- Compatible with standard TTL logic levels.
- Each port configurable as input or output.

Timer/Counter Capabilities
- 16‑bit resolution with up to 10 MHz external clock.
- Eight modes including event counting, period measurement, pulse generation, and PWM.
- Programmable gating and polarity control.

Efficiency and Limitations
- Continuous streaming limited by PCIe bandwidth and system memory speed.
- Maximum analog output rate 1 MS/s; maximum analog input rate 400 kS/s.
- External reference voltage must remain within ±10 V.

---

### 8. Standards & Compliance

- Bus Interface: PCI Express x1 compliant
- PXI Specification: Rev 2.2 (for PXI variants)
- Digital Logic Levels: 5 V TTL/CMOS compatible
- Environmental Compliance: Operating 0–55 °C, storage –20–70 °C, humidity 5–95 % non‑condensing
- Safety and Reliability: Factory tested and calibrated; auto‑calibration maintains accuracy over time.
- Regulatory: Designed to meet industrial EMC and safety requirements (CE/FCC class A typical for ADLINK DAQ cards).

---

### 9. Additional Information

Calibration and Maintenance
- Factory‑calibrated before shipment.
- Auto‑calibration routine compensates for offset and gain errors without external equipment.
- Recommended warm‑up time: 15 minutes before calibration.
- Calibration constants stored in EEPROM (user can save up to three sets).

Warranty and Support
- Standard limited warranty: 2 years (1 year for China).
- Covers manufacturing defects and hardware failures under normal use.
- Excludes damage from misuse, improper storage, or unauthorized repair.
- RMA service available via ADLINK website (http://rma.adlinktech.com/policy).

Technical Support Contacts
- ADLINK Technology Inc. (Taiwan): service@adlinktech.com  |  +886‑2‑8226‑5877
- ADLINK Technology America: info@adlinktech.com  |  +1‑866‑4‑ADLINK
- ADLINK Europe: emea@adlinktech.com  |  +49‑211‑4955552
- Regional offices: Singapore, India, Beijing, Shanghai, Shenzhen (contact details available on ADLINK website).

Software Updates and Documentation
- Latest drivers and manuals available at [www.adlinktech.com](http://www.adlinktech.com).
- Manuals include hardware layout, signal connections, operation theory, and calibration procedures.
- Example programs and LabVIEW VIs provided on the ADLINK CD.

Maintenance Guidelines
- Handle card using ESD precautions.
- Keep connectors clean and dry.
- Periodically run auto‑calibration to maintain accuracy.
- Store in anti‑static packaging at –20 °C to 70 °C when not in use.

---

### Summary

The ADLINK DAQe‑2502 is a high‑performance, 8‑channel, 12‑bit analog output and 4‑channel, 14‑bit analog input PCI Express data acquisition card designed for precision waveform generation and signal measurement. With 1 MS/s update rate, 400 kS/s sampling, auto‑calibration, and comprehensive triggering and synchronization features, it serves as a versatile solution for industrial automation, test and measurement, and scientific research applications. Its robust hardware architecture, scatter‑gather DMA, and broad software support make it ideal for engineers requiring deterministic timing and high‑accuracy analog I/O in a compact PCIe form factor.