Comprehensive Product Summary: AD16-16U(PC)EH Analog-to-Digital Interface Card

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### 1. Product Overview

Product Name: AD16-16U(PC)EH
Model Number: AD16-16U(PC)EH
Series: AT AD Card Series
Article Number: AD16-16U(PC)EH
Manufacturer: Contec Co., Ltd.

The AD16-16U(PC)EH is a high-performance analog-to-digital (A/D) and digital-to-analog (D/A) conversion interface card designed for PC-based data acquisition and control applications. Developed by Contec, a recognized manufacturer of industrial computing and measurement hardware, this card integrates high-speed sampling, precision conversion, and flexible I/O capabilities into a single AT-bus compatible board. It is engineered for demanding measurement, automation, and signal processing environments requiring accurate analog input, digital input/output, and analog output functionalities.

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### 2. Key Features

- High-Speed Analog-to-Digital Conversion:
Capable of sampling at up to 1 mega-sample per second (1 MS/s) with 16-bit resolution, ensuring precise and rapid data acquisition for dynamic signal measurement.

- Versatile Channel Configuration:
Provides 16 single-ended (SE) or 8 differential (DI) analog input channels. With the optional ATUH-16(PC) expansion module, the configuration can be extended to 32 SE / 16 DI channels, offering scalability for larger measurement systems.

- Wide Input Voltage Range:
Supports multiple input ranges including ±10 V, ±5 V, ±2.5 V, 0–10 V, and 0–5 V, allowing compatibility with a broad spectrum of analog sensors and signal sources.

- Integrated Digital-to-Analog Output:
Includes one 16-bit D/A output channel with selectable output ranges of ±10 V or 0–10 V, capable of delivering up to ±5 mA output current with a maximum conversion time of 13 µs.

- Intelligent Sampling Control:
Incorporates an ASIC-based intelligent sampling controller for efficient data handling and timing precision, minimizing CPU load during high-speed acquisition.

- Large Onboard FIFO / Ring Buffer:
Equipped with a 256 K-word FIFO (First-In-First-Out) or ring buffer, enabling continuous high-speed data streaming without data loss.

- Flexible Bus and Interrupt Configuration:
Supports DMA channels 5, 6, and 7 and IRQ lines 5, 7, 9–12, and 15, providing flexible integration into various PC architectures and minimizing latency.

- Digital I/O Capability:
Offers 4 TTL-compatible digital input and 4 TTL-compatible digital output lines, each rated for 5 VDC operation and a total current capacity of 2 A, suitable for control and status signaling.

- Robust Connectivity:
Features a 37-pin D-Sub female connector for secure and standardized signal interfacing.

- Industrial-Grade Design:
Built for reliability and precision in laboratory, industrial automation, and embedded control systems.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Analog Input Channels | 16 Single-Ended (SE) / 8 Differential (DI) |
| Expandable Channels | Up to 32 SE / 16 DI with ATUH-16(PC) extension |
| Analog Input Resolution | 16 bits |
| Sampling Rate | Up to 1 MS/s (1 Mega-sample per second) |
| Input Voltage Ranges | ±10 V, ±5 V, ±2.5 V, 0–10 V, 0–5 V |
| A/D Converters | AD669 and ADC4320 |
| Buffer Memory | 256 K-word FIFO or ring buffer |
| Analog Output Channels | 1 channel |
| Analog Output Resolution | 16 bits |
| Output Voltage Range | ±10 V or 0–10 V |
| Output Current Capacity | ±5 mA maximum |
| Conversion Time (D/A) | 13 µs maximum |
| Digital I/O Lines | 4 input / 4 output (TTL level) |
| Digital I/O Voltage | 5 VDC |
| Digital I/O Current Capacity | 2 A maximum total |
| DMA Channels | 5, 6, 7 |
| Interrupt Lines (IRQ) | 5, 7, 9, 10, 11, 12, 15 |
| Connector Type | D-Sub 37-pin female |
| Power Supply | 5 VDC (from PC bus) |
| Board Dimensions | 340 mm × 122 mm |
| Bus Interface | AT-bus (ISA-compatible) |
| Manufacturer | Contec Co., Ltd. |

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### 4. Functionality

The AD16-16U(PC)EH functions as a high-speed data acquisition interface card for PC-based measurement and control systems. It converts analog signals from sensors, transducers, or other analog sources into digital data for processing, analysis, or storage by the host computer. The card’s 16-bit A/D converter ensures high precision, while the 1 MS/s sampling rate supports real-time monitoring of rapidly changing signals.

The onboard ASIC controller manages sampling timing and data transfer, reducing CPU overhead and ensuring stable operation even under high data throughput. The 256 K-word FIFO buffer allows continuous acquisition without data loss, even when the host system is temporarily busy.

The integrated D/A output channel enables the card to generate analog control signals, making it suitable for closed-loop control systems, waveform generation, or actuator driving. The TTL digital I/O lines provide additional flexibility for triggering, synchronization, or simple control tasks.

Typical Applications:
- Industrial process monitoring and control
- Laboratory instrumentation and data logging
- Automated test equipment (ATE)
- Signal analysis and waveform capture
- Embedded control systems
- Research and development environments requiring mixed-signal interfacing

Compatibility:
Designed for AT-bus (ISA) architecture PCs, the card can be integrated into legacy or specialized industrial computer systems. It supports standard operating systems and data acquisition software that can interface with Contec’s driver libraries or APIs.

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### 5. Components & Accessories

Included Components:
- AD16-16U(PC)EH main board
- 37-pin D-Sub female connector interface
- User documentation and installation guide
- Driver and utility software (depending on distribution package)

Optional Accessories:
- ATUH-16(PC) expansion module: Extends analog input channels to 32 SE / 16 DI
- Shielded signal cables for noise reduction in industrial environments
- Terminal blocks or breakout boards for simplified wiring
- Mounting brackets or chassis accessories for secure installation

Connectors:
- Primary Interface: D-Sub 37-pin female connector for analog and digital I/O
- Bus Interface: Standard AT-bus edge connector for PC motherboard slot

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### 6. Installation & Setup

System Requirements:
- PC with available AT-bus (ISA) slot
- +5 VDC power supply from system bus
- Compatible operating system with Contec driver support

Installation Procedure:
1. Power off the host PC and remove the cover.
2. Insert the AD16-16U(PC)EH card into an available AT-bus slot.
3. Secure the card using the mounting screw to ensure mechanical stability.
4. Connect external signals to the D-Sub 37-pin connector using appropriate shielded cables.
5. Configure DMA and IRQ settings via jumpers or software (depending on system configuration).
6. Install the provided driver software and verify device recognition in the operating system.
7. Calibrate input ranges and verify signal acquisition using Contec’s diagnostic utilities.

Mounting Options:
- Standard horizontal or vertical installation within PC chassis
- Optional external breakout panel for easier access to I/O terminals

Configuration:
- Input range selection and channel mode (SE/DI) configured via software or jumper settings
- DMA and IRQ assignments selectable to avoid conflicts with other devices

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### 7. Performance & Capabilities

Analog Performance:
- Resolution: 16-bit precision ensures fine granularity in signal measurement.
- Sampling Rate: 1 MS/s enables accurate capture of fast transient signals.
- Input Range Flexibility: Multiple voltage ranges accommodate diverse sensor outputs.
- Low Noise and High Linearity: The use of AD669 and ADC4320 converters ensures stable, low-distortion signal conversion.

Digital Performance:
- TTL I/O: 4 input and 4 output lines provide reliable digital interfacing for control and synchronization.
- Output Drive Capability: Supports up to 2 A total current, suitable for driving indicator LEDs, relays, or logic circuits.

Data Handling:
- 256 K-word FIFO buffer supports continuous streaming without data loss.
- DMA transfer minimizes CPU load, enabling real-time data acquisition.
- Interrupt-driven operation allows responsive event handling.

Analog Output Performance:
- 16-bit D/A resolution ensures smooth and accurate analog signal generation.
- 13 µs conversion time supports dynamic waveform output or control signal generation.
- ±10 V / 0–10 V output range provides compatibility with standard control systems.

Limitations:
- Designed for AT-bus (ISA) systems; not directly compatible with modern PCIe architectures without adapters.
- Single D/A output channel may limit simultaneous multi-channel analog output applications.
- Requires careful grounding and shielding in high-noise environments to maintain accuracy.

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### 8. Standards & Compliance

Electrical and Interface Standards:
- Complies with AT-bus (ISA) electrical and mechanical specifications.
- TTL-level digital I/O conforms to standard 5 V logic levels.
- Analog input/output ranges conform to industrial signal standards (±10 V, 0–10 V).

Regulatory Compliance:
- Designed in accordance with CE and FCC guidelines for electromagnetic compatibility (EMC).
- Manufactured under ISO 9001 quality management standards (typical for Contec products).
- RoHS-compliant materials and lead-free soldering processes (depending on production batch).

Industry Standards:
- Compatible with standard data acquisition software frameworks and APIs.
- Supports standard interrupt and DMA configurations for legacy PC systems.

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### 9. Additional Information

Warranty:
Typically supplied with a one-year limited warranty covering manufacturing defects and hardware failures under normal operating conditions. Extended warranty options may be available through Contec or authorized distributors.

Technical Support:
Contec provides comprehensive technical documentation, driver software, and application notes. Support is available through online resources, email, and regional service centers.

Maintenance:
- Periodic inspection of connectors and contacts recommended to ensure reliable signal integrity.
- Keep the board free from dust and contaminants; use anti-static precautions during handling.
- Firmware or driver updates may be available to enhance performance or compatibility.

Software & Updates:
- Compatible with Contec’s driver libraries for Windows and DOS environments.
- Example programs and SDKs available for integration into custom applications.
- Regular updates provided through Contec’s support portal.

Environmental Conditions:
- Operating temperature: typically 0 °C to 50 °C (depending on system airflow).
- Storage temperature: –20 °C to 70 °C.
- Humidity: 10–90% RH (non-condensing).

Service Life & Reliability:
- Designed for long-term operation in industrial and laboratory environments.
- High-quality components ensure stable performance and minimal drift over time.

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### Summary

The Contec AD16-16U(PC)EH is a robust, high-precision 16-bit A/D and D/A data acquisition card optimized for AT-bus (ISA) based PC systems. With its 1 MS/s sampling rate, 256 K-word FIFO buffer, and intelligent ASIC sampling control, it delivers reliable, high-speed analog and digital interfacing for a wide range of industrial, scientific, and automation applications. Its flexible input ranges, expandable channel configuration, and integrated digital I/O make it a versatile solution for engineers and system integrators seeking dependable performance in mixed-signal environments.