Comprehensive Product Summary: ADLINK USB-2405 / USB-2405/2AI

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### 1. Product Overview

Product Name: USB-2405 / USB-2405/2AI
Series: USB Dynamic Signal Acquisition Series
Model: USB-2405
Article Number: USB-2405/2AI
Manufacturer: ADLINK Technology, Inc.
Part Number: 50-1Z148-1000
Product Type: USB Bus-Powered 24-bit, 2/4-Channel Simultaneous Sampling Dynamic Signal Acquisition Module
Revision: Manual Rev. 2.00 (July 5, 2013)

The ADLINK USB-2405 is a high-performance, USB 2.0-based dynamic signal acquisition module designed for precision measurement and analysis of vibration, acoustic, and other dynamic signals. It provides simultaneous sampling across multiple channels with 24-bit resolution and up to 128 kS/s per channel. The device integrates advanced signal conditioning, IEPE sensor support, and flexible triggering modes, making it ideal for laboratory, industrial, and field data acquisition applications.

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### 2. Key Features

- High-Resolution Data Acquisition:
24-bit Sigma-Delta ADC with integrated anti-aliasing filter for superior accuracy and noise suppression.

- Simultaneous Sampling:
Four analog input channels (or two in the USB-2405/2AI variant) capable of simultaneous sampling up to 128 kS/s per channel.

- Flexible Input Configuration:
Supports differential or pseudo-differential input modes with software-selectable AC/DC coupling.

- IEPE Sensor Support:
Built-in 2 mA excitation current per channel for Integrated Electronic Piezoelectric (IEPE) sensors such as accelerometers and microphones.

- USB Bus Powered:
Operates directly from USB 2.0 power (5 V @ 400 mA), eliminating the need for external power supplies.

- Comprehensive Triggering:
Supports analog and digital trigger sources with multiple modes—post, pre, delay, middle, gated, and retriggering.

- Auto-Calibration:
Fully automated calibration with onboard reference voltage ensures long-term measurement stability.

- Software Integration:
Compatible with ADLINK’s U-Test utility, DAQPilot SDK, LabVIEW®, MATLAB®, and Visual Studio.NET environments.

- Compact and Portable:
Rugged aluminum enclosure with BNC connectors and removable spring terminals for flexible connectivity.

- Environmental Compliance:
Designed in accordance with RoHS and WEEE directives for environmental responsibility.

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### 3. Technical Specifications

Physical Characteristics:
- Dimensions: 115 mm (W) × 150 mm (D) × 40 mm (H)
(Alternate spec: 156.5 mm (L) × 114 mm (W) × 41.3 mm (H))
- Weight: Approx. 0.8 kg (module only)
- Material: Aluminum alloy enclosure with integrated stand
- Mounting: Desk, wall, or DIN rail via included stand and mounting kit

Power Requirements:
- USB Bus Powered: 5 V DC @ 400 mA
- Interface: Hi-Speed USB 2.0 (Mini-B connector)

Environmental Conditions:
- Operating Temperature: 0°C to 55°C (32°F to 131°F)
- Storage Temperature: -20°C to 70°C (-4°F to 158°F)
- Relative Humidity: 5% to 95%, non-condensing

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### 4. Functionality

Operation Principle:
The USB-2405 employs a 24-bit Sigma-Delta ADC architecture with integrated anti-aliasing filters. Each channel samples simultaneously, ensuring phase-coherent data acquisition across all inputs. The module supports both AC and DC coupling, selectable via software, and can provide constant current excitation for IEPE sensors.

Use Cases and Applications:
- Vibration and shock testing
- Machine condition monitoring
- Acoustic and noise analysis
- Environmental sound measurement
- Structural health monitoring
- Laboratory and educational research

Compatibility:
- Operating Systems: Windows XP, Windows 7/8 (x86/x64)
- Software: ADLINK U-Test, DAQBench, DAQMaster, LabVIEW®, MATLAB®, Visual Studio.NET
- Drivers: UD-DASK, DAQPilot SDK

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### 5. Components & Accessories

Included Items:
- USB-2405 module
- 2 m USB Type-A to Mini-B cable (lockable)
- Multi-function stand (desk, wall, or rail mount)
- Rail-mount kit
- 4-pin removable spring terminal
- ADLINK All-in-One software CD
- Quick Start Guide

Optional Accessories:
- RST-20P: Pair of 20-pin removable screw terminals
- USB-2M-L: 2 m USB cable with lockable connector

Connectors:
- Four BNC connectors for analog input
- One 4-pin removable spring terminal for GPIO
- USB Mini-B port for host connection

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### 6. Installation & Setup

Requirements:
- Windows-based PC with available USB 2.0 port
- Installation of ADLINK UD-DASK or DAQPilot drivers prior to connection

Mounting Options:
- Desk Mount: Use integrated stand for tabletop operation.
- DIN Rail Mount: Attach stand to DIN rail using included rail-mount kit.
- Wall Mount: Secure stand with four 3.4 mm screws.

Configuration:
- Device ID rotary switch (0–7) for multi-device setups
- Software-configurable sampling rate, input range, coupling, and trigger modes
- Auto-calibration utility for precision adjustment

Setup Procedure:
1. Install drivers and U-Test software.
2. Connect the module via USB cable.
3. Wait for firmware to load (LED changes from amber to green).
4. Configure channels and acquisition parameters in U-Test or DAQPilot.

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### 7. Performance & Capabilities

Analog Input:
- Channels: 4 (simultaneous sampling)
- Resolution: 24-bit
- Sampling Rate: 1 kS/s to 128 kS/s per channel
- Input Range: ±10 V
- Input Configuration: Differential or pseudo-differential
- Input Impedance: 200 kΩ (between + and -), 16.93 kΩ (between - and chassis)
- Coupling: AC or DC (software selectable)
- FIFO Buffer: 2k samples per channel (8k total)
- Overvoltage Protection: ±60 V
- Common Mode Range: ±10 V
- IEPE Excitation: 2 mA or 0 mA (software selectable), 24 V compliance

DC Accuracy (25°C):
- Offset Error: ±0.15 mV typical, ±0.3 mV max
- Gain Error: ±0.15% typical, ±0.3% max

AC Dynamic Performance (25°C):
- THD (20 Hz–20 kHz): -94 dB (differential), -92 dB (pseudo-differential)
- THD+N (20 Hz–20 kHz): -91 dB (differential), -88 dB (pseudo-differential)
- CMRR: 60 dB (20 Hz–1 kHz)
- Flatness: ±0.01 dB (20 Hz–20 kHz), ±0.15 dB (20 Hz–46.4 kHz)
- Crosstalk: -102 dB @ 1 kHz, -95 dB @ 46.4 kHz
- System Noise: 50 µVrms (high-resolution mode), 65 µVrms (high-speed mode)
- SFDR: 104 dB @ 1 kHz
- Dynamic Range: 100 dB @ 1 kHz
- Bandwidth: -3 dB at 0.49 × sampling rate
- AC Cutoff: -3 dB at 0.4 Hz, -0.1 dB at 2.4 Hz

Digital I/O:
- Channels: 2 programmable function I/O
- Logic Levels: 3.3 V / TTL compatible
- Input: VIL ≤ 0.8 V, VIH ≥ 2.0 V
- Output: VOL ≤ 0.8 V, VOH ≥ 2.0 V
- Drive Current: 24 mA max
- Overvoltage Protection: -2 V to +7 V
- Modes: Static I/O, PWM output (up to 4 MHz), frequency/event counter (up to 4 MHz), digital trigger IN, synchronization sample clock IN (up to 128 kHz)

Triggering:
- Sources: Analog or digital (software selectable)
- Modes: Post, pre, delay, middle, gated, retrigger
- Resolution: 24-bit trigger level
- Delay Counter: 32-bit (max 2³²–1 counts)

Data Transfer:
- Modes: Programmed I/O, continuous (bulk transfer)
- Buffer: 8k samples across all channels

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### 8. Standards & Compliance

- USB Interface: Hi-Speed USB 2.0 compliant
- Environmental: RoHS and WEEE compliant
- Safety: Designed for CE and FCC compliance
- Operating Standards: Meets industrial DAQ performance and EMC requirements
- Calibration: Factory-calibrated with onboard EEPROM storage for constants

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### 9. Additional Information

Calibration & Maintenance:
- Factory calibration stored in EEPROM (non-modifiable)
- User calibration supported via auto-calibration utility
- Onboard reference voltage ensures accuracy without external equipment
- Recommended warm-up: 15 minutes before calibration

Warranty & Support:
- Standard ADLINK limited warranty (contact regional office for terms)
- Global technical support via ADLINK service centers in Taiwan, USA, China, Japan, Europe, and other regions
- Email support: service@adlinktech.com
- Online resources: [www.adlinktech.com](http://www.adlinktech.com)

Software & Updates:
- U-Test utility for configuration, data logging, and FFT analysis
- DAQPilot SDK for LabVIEW® and MATLAB® integration
- UD-DASK driver for low-level programming
- Regular firmware and driver updates available from ADLINK’s website

Safety Notes:
- Operate within specified temperature and humidity ranges
- Avoid exposure to liquids, high humidity, or excessive heat
- Disconnect power before installation or maintenance
- Service only by qualified personnel

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### Summary

The ADLINK USB-2405 / USB-2405/2AI is a compact, high-precision dynamic signal acquisition module engineered for demanding measurement applications. With its 24-bit resolution, simultaneous multi-channel sampling, and integrated IEPE sensor support, it delivers laboratory-grade performance in a portable USB-powered form factor. Its flexible triggering, comprehensive software ecosystem, and robust construction make it suitable for vibration analysis, acoustic testing, and general-purpose data acquisition in both research and industrial environments.

The module’s combination of precision, versatility, and ease of use—enhanced by ADLINK’s U-Test software and DAQPilot SDK—positions it as a reliable solution for engineers and researchers requiring accurate, synchronized, and high-resolution signal capture.