Comprehensive Product Summary: ADLINK USB-7230 Isolated Digital I/O Module

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### 1. Product Overview

Product Name: USB-7230
Model: USB-7230
Series: USB-7200 Series (USB-7230/7250 Family)
Article Number: USB-7230
Manufacturer: ADLINK Technology, Inc.
Part Number: 50-1Z138-2000
Manual Revision: 2.00 (November 16, 2012)
Product Type: USB 2.0-based isolated digital input/output and counter module
Manufacturer Website: [www.adlinktech.com](http://www.adlinktech.com)

The ADLINK USB-7230 is a compact, USB bus-powered digital I/O module designed for industrial and laboratory automation applications. It provides 16 isolated digital input channels, 16 isolated digital output channels, and two 32-bit frequency/event counters. The module offers high-voltage isolation up to 2500 Vrms, ensuring robust protection against electrical interference and ground loops. It is part of ADLINK’s USB-7200 series, which also includes the USB-7250 variant with relay outputs.

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### 2. Key Features

- High-Speed USB 2.0 Interface: Fully compliant with USB 2.0 specifications, ensuring fast data transfer and plug-and-play connectivity.
- USB Bus Powered: Operates directly from the USB port (5 VDC @ 400 mA), eliminating the need for an external power supply.
- Isolated Digital I/O:
- 16 optically isolated digital input channels (bi-directional, non-polarity).
- 16 optically isolated open-drain MOSFET digital output channels (5–35 VDC).
- Dual 32-bit Counters: Two optically isolated frequency/event counters supporting up to 1 MHz input frequency.
- High Isolation Voltage: 2500 Vrms isolation between channels and system ground for enhanced safety and noise immunity.
- Change-of-State (COS) Detection: Hardware-based detection of input state transitions with software-selectable channels.
- Programmable Digital Filtering: Software-configurable glitch filtering to eliminate transient noise on input lines.
- Programmable Power-Up Output State: Ensures known output conditions upon power-up or reset.
- Removable Screw-Terminal Connectors: Two 20-pin removable screw-down terminals simplify wiring and maintenance.
- Lockable USB Cable: Prevents accidental disconnection in industrial environments.
- Multi-Mount Stand: Supports desktop, DIN rail, or wall mounting configurations.
- Software Support: Compatible with ADLINK’s UD-DASK, DAQPilot SDK, and U-Test utility for configuration, testing, and development.
- Environmental Compliance: Fully RoHS and WEEE compliant, reflecting ADLINK’s commitment to environmental responsibility.

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### 3. Technical Specifications

Physical and Electrical Characteristics
- Interface: USB 2.0 (high-speed, mini-USB connector)
- Power Supply: USB bus-powered (5 VDC @ 400 mA)
- Dimensions: 156.5 mm (L) × 114 mm (W) × 41.3 mm (H)
- Weight: Approx. 0.5 kg (without connectors or stand)
- I/O Connector: Two 20-pin removable screw-down terminal blocks
- Isolation Voltage: 2500 Vrms (channel-to-system)
- Operating Temperature: 0°C to 55°C
- Storage Temperature: -20°C to 70°C
- Relative Humidity: 10%–90% (operating, non-condensing); 5%–95% (storage, non-condensing)

Digital Input (DI)
- Channels: 16 optically isolated inputs
- Polarity: Bi-directional (non-polarity sensitive)
- Logic Levels: VIH = 5–24 V, VIL = 0–1.5 V or dry contact
- Input Resistance: 2.4 kΩ @ 0.5 W
- Isolation: 2500 Vrms
- COS Detection: Software programmable, minimum pulse width 20.83 ns
- Data Transfer: Programmed I/O

Digital Output (DO)
- Channels: 16 optically isolated outputs
- Output Type: Open-drain MOSFET
- Supply Voltage: 5–35 VDC
- Maximum Sink Current: 250 mA per channel (100% duty cycle)
- Data Transfer: Programmed I/O

Frequency/Event Counter
- Channels: 2 optically isolated counters
- Counter Width: 32-bit
- Logic Levels: VIH = 5–12 V, VIL = 0–1.5 V
- Input Frequency Range: 0.1 Hz to 1 MHz (DC coupled)
- Frequency Error:
- ≤0.5% for f ≤ 50 kHz
- ≤1% for 50 kHz < f ≤ 500 kHz
- ≤2% for 500 kHz < f ≤ 1 MHz
- Data Transfer: Programmed I/O

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### 4. Functionality

The USB-7230 functions as a high-performance digital I/O interface for PC-based data acquisition and control systems. It connects directly to a host computer via USB 2.0 and is powered through the same connection. The module’s optically isolated inputs and outputs protect both the host system and connected devices from voltage spikes and ground potential differences.

Use Cases and Applications:
- Industrial automation and process control
- Laboratory instrumentation and research setups
- Automotive testing and signal monitoring
- Machine control and signal switching
- Data acquisition systems requiring isolated I/O

Compatibility:
- Compatible with Windows operating systems (Windows 7/Vista and later)
- Supported by ADLINK’s UD-DASK and DAQPilot drivers
- Integrates with LabVIEW®, MATLAB®, and SCADA/HMI systems via ActiveX components

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### 5. Components & Accessories

Included Items:
- USB-7230 module
- Multi-function stand (desktop, rail, or wall mount)
- Two removable 20-pin screw terminal blocks
- 2-meter USB cable (lockable connector)
- Rail-mount kit
- ADLINK All-in-One CD (drivers, SDKs, utilities)
- Printed user manual

Optional Accessories:
- Additional screw terminal blocks
- Extended USB cables
- DIN rail mounting hardware
- Wall-mount brackets

Connectors:
- Terminal 1 (Pins 1–20): DI0–DI7, CNT0, COM, CGND
- Terminal 2 (Pins 21–40): DI8–DI15, DO0–DO15, IGND, VDD

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### 6. Installation & Setup

Requirements:
- Host PC with available USB 2.0 port
- Windows OS with UD-DASK or DAQPilot driver installed
- 400 mA USB power availability

Installation Steps:
1. Install ADLINK drivers and utilities from the All-in-One CD.
2. Connect the USB-7230 to the PC using the provided USB cable.
3. Wait for the system to recognize the device and load firmware (LED changes from amber to green).
4. Verify device presence in Windows Device Manager.
5. Configure device ID (rotary switch on rear panel, range 0–7) to avoid conflicts when multiple modules are connected.

Mounting Options:
- Desktop: Place module in stand for stable operation.
- DIN Rail: Attach stand to rail-mount kit and secure to standard DIN rail.
- Wall Mount: Use four 3.4 mm screws through pre-drilled holes in the stand.

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### 7. Performance & Capabilities

Speed and Responsiveness:
- High-speed USB 2.0 interface ensures low-latency communication.
- COS detection and digital filtering enable precise event capture.
- Counters operate up to 1 MHz with minimal error (<2%).

Capacity and Efficiency:
- 32 total digital I/O channels (16 DI + 16 DO).
- Two independent 32-bit counters for event or frequency measurement.
- Software-controlled filtering and programmable output states enhance reliability.

Limitations:
- COS detection frequency limited by host system latency (~1 kHz typical).
- USB bus power may be insufficient if multiple high-current devices share the same hub.
- Not suitable for direct connection to high-voltage AC circuits without proper isolation.

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### 8. Standards & Compliance

Certifications and Compliance:
- RoHS Compliant: Restriction of Hazardous Substances Directive
- WEEE Compliant: Waste Electrical and Electronic Equipment Directive
- USB 2.0 Certified: Fully compliant with USB 2.0 specifications
- Safety Isolation: 2500 Vrms channel-to-system isolation

Industry Standards:
- Compatible with standard industrial control voltages (5–35 VDC)
- Meets CE and FCC requirements for electromagnetic compatibility (EMC)

Environmental Responsibility:
ADLINK enforces strict environmental policies to minimize ecological impact. The USB-7230 is designed for easy recycling and safe disposal at end-of-life, in accordance with international environmental directives.

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### 9. Additional Information

Warranty:
Standard ADLINK limited warranty (typically one year, region-dependent). Covers defects in materials and workmanship under normal use.

Technical Support:
ADLINK provides global technical support through regional offices in Taiwan, USA, Europe, China, Japan, Korea, Singapore, and India.
- Email: service@adlinktech.com
- Website: [www.adlinktech.com](http://www.adlinktech.com)

Maintenance:
- Keep module clean and free from dust.
- Avoid exposure to moisture, high humidity, or extreme temperatures.
- Disconnect USB cable before cleaning or servicing.
- Do not attempt internal repairs; contact ADLINK service centers for assistance.

Software Updates:
- Latest drivers and utilities available from ADLINK’s website.
- UD-DASK (v1.0.5 or later) and DAQPilot (v2.3.4.1109 or later) required for full functionality.
- U-Test utility provides immediate testing and verification of I/O channels without programming.

Safety Notes:
- Always disconnect power before wiring or maintenance.
- Ensure proper grounding and isolation when connecting external devices.
- Use only recommended voltage levels and mounting configurations.

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### Summary

The ADLINK USB-7230 is a robust, high-performance USB-based digital I/O module engineered for industrial automation, laboratory testing, and data acquisition applications. With 32 isolated digital channels, dual high-speed counters, and 2500 Vrms isolation, it provides reliable signal interfacing and protection in demanding environments. Its USB bus-powered design, flexible mounting options, and comprehensive software support make it an ideal solution for engineers and system integrators seeking a compact, plug-and-play digital I/O platform.

The module’s combination of hardware isolation, programmable filtering, and software-configurable features ensures accurate, noise-free operation across a wide range of industrial and research applications.