1. Product Overview
Name: PC AD Card 30kS/s 12bit 8SE 4/4 TTL IO
Model: ADC-30(PC)
Series: ADC Series – PC-based Analog-to-Digital Conversion Cards
Article Number: ADC-30(PC)
Manufacturer: Contec Co., Ltd.

The Contec ADC-30(PC) is a high-performance analog-to-digital (A/D) conversion card designed for ISA bus-based personal computers. It provides precise analog signal acquisition and digital I/O control capabilities for industrial, laboratory, and embedded measurement systems. With a sampling rate of up to 30 kS/s, 12-bit resolution, and 8 single-ended analog input channels, the ADC-30(PC) delivers reliable and accurate data acquisition for a wide range of analog measurement applications. The card also integrates 4 TTL-level digital inputs, 4 TTL-level digital outputs, and three 16-bit counter/timer channels, making it a versatile solution for mixed-signal data acquisition and control tasks.

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2. Key Features
- High-Resolution Analog-to-Digital Conversion: 12-bit resolution ensures precise analog signal measurement with fine granularity and low quantization error.
- Sampling Rate: Capable of up to 30,000 samples per second (30 kS/s), suitable for medium-speed data acquisition tasks.
- Analog Input Configuration: Supports 8 single-ended (SE) analog input channels, allowing simultaneous monitoring of multiple analog signals.
- Input Voltage Ranges: Configurable for ±5 V or 0–10 V input ranges, providing flexibility for different signal levels and sensor outputs.
- Digital I/O Capability: Includes 4 TTL-compatible digital input lines and 4 TTL-compatible digital output lines for control and monitoring of external devices.
- Counter/Timer Functions: Equipped with three independent 16-bit counter/timer channels, ideal for event counting, frequency measurement, or timing control.
- Interrupt Support: Compatible with IRQ 2, 3, 4, 5, 6, or 7, allowing flexible integration into PC-based systems with interrupt-driven data acquisition.
- Connector Type: Features a D-type 37-pin female connector for secure and standardized external signal interfacing.
- Compact Form Factor: Physical dimensions of 120 mm × 107 mm, optimized for installation in standard ISA slots.
- ISA Bus Interface: Designed for legacy and industrial PC systems using the ISA bus architecture, ensuring stable and deterministic performance.

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3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Model | ADC-30(PC) |
| Bus Interface | ISA (Industry Standard Architecture) |
| Analog Input Channels | 8 single-ended (SE) |
| Resolution | 12 bits |
| Maximum Sampling Rate | 30 kS/s (30,000 samples per second) |
| Input Voltage Range | ±5 V or 0–10 V (selectable) |
| Input Type | Single-ended analog input |
| Digital Inputs | 4 channels, TTL level |
| Digital Outputs | 4 channels, TTL level |
| Counter/Timer Channels | 3 channels, 16-bit each |
| Interrupt Lines | IRQ 2, 3, 4, 5, 6, or 7 (selectable) |
| Connector Type | D-sub 37-pin female (D-type 37-pin-f) |
| Dimensions | 120 mm (W) × 107 mm (D) |
| Weight | Approx. dependent on configuration (typically <150 g) |
| Power Requirements | Supplied via ISA bus (standard PC power rails) |
| Operating Temperature | Typically 0°C to +50°C (standard industrial range) |
| Storage Temperature | -20°C to +70°C |
| Humidity | 10–90% RH (non-condensing) |
| Mounting | Internal PC ISA slot |
| Manufacturer | Contec Co., Ltd. |

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4. Functionality

The ADC-30(PC) functions as a data acquisition interface between analog sensors or transducers and a PC-based control or monitoring system. Analog signals from external devices—such as temperature sensors, pressure transducers, or voltage sources—are connected to the card’s analog input channels via the D-type 37-pin connector. The onboard A/D converter digitizes these analog signals at up to 30 kS/s with 12-bit resolution, producing digital data that can be processed, displayed, or logged by the host computer.

The card’s digital I/O lines allow the PC to interact with external digital devices, such as switches, relays, or indicators. The TTL-level inputs can detect logic states from external circuits, while the TTL-level outputs can drive control signals or trigger external equipment.

The three 16-bit counter/timer channels provide additional functionality for event counting, frequency measurement, pulse generation, or timing control. These counters can be used independently or in combination with the analog and digital I/O functions to implement complex measurement and control tasks.

Typical Use Cases and Applications:
- Industrial process monitoring and control
- Laboratory instrumentation and data logging
- Sensor signal acquisition and analysis
- Automated test equipment (ATE)
- Educational and research experiments
- Embedded control systems using legacy ISA-based PCs

Compatibility:
The ADC-30(PC) is designed for ISA bus-compatible PCs, typically running DOS, Windows, or other operating systems that support direct hardware access. It can be integrated with Contec’s software drivers, SDKs, or third-party data acquisition software that supports ISA-based A/D cards.

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5. Components & Accessories

Included Items:
- ADC-30(PC) main card (ISA form factor)
- D-type 37-pin female connector interface
- User manual and installation guide (may include pinout and configuration details)
- Driver disk or software utilities (depending on distribution package)

Optional Accessories:
- Shielded signal cables (D-sub 37-pin male to terminal block)
- External terminal boards for easy signal wiring
- Mounting brackets or extension cables for custom enclosures
- Software development kits (SDKs) for Windows or DOS environments
- Calibration and test accessories for analog input verification

Connectors:
- Primary Connector: D-type 37-pin female (D-sub 37F)
- Carries analog input signals, digital I/O lines, counter/timer signals, and ground references.
- Pin assignments typically include analog input channels (AI0–AI7), digital input/output lines (DI0–DI3, DO0–DO3), counter/timer I/O, and reference voltages.

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6. Installation & Setup

Requirements:
- PC with available ISA slot
- Compatible operating system (DOS, Windows, or industrial control OS)
- Appropriate driver or software support from Contec

Installation Steps:
1. Power off the PC and disconnect it from the power source.
2. Remove the PC case cover to access the ISA expansion slots.
3. Insert the ADC-30(PC) card firmly into an available ISA slot, ensuring proper alignment.
4. Secure the card with the mounting screw to the chassis bracket.
5. Connect external signals to the D-type 37-pin connector using the appropriate cable or terminal board.
6. Configure the card’s IRQ setting (2, 3, 4, 5, 6, or 7) via onboard jumpers or DIP switches according to system requirements.
7. Power on the PC and install the necessary drivers or software utilities.
8. Verify operation using diagnostic or test software provided by Contec.

Mounting Options:
- Standard internal installation in desktop or industrial PC chassis.
- Can be used with external breakout boxes for easier wiring and maintenance.

Configuration:
- Input range selection (±5 V or 0–10 V) may be configured via jumpers or software, depending on revision.
- Interrupt and base address settings are typically hardware-configurable via DIP switches.

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7. Performance & Capabilities

Analog Performance:
- Resolution: 12 bits (4096 discrete levels)
- Sampling Rate: Up to 30 kS/s, suitable for low- to mid-speed analog signal acquisition.
- Input Range: ±5 V or 0–10 V, allowing measurement of both bipolar and unipolar signals.
- Accuracy: High linearity and low noise design typical of Contec’s A/D cards.

Digital I/O Performance:
- Input/Output Type: TTL-compatible logic levels (0–5 V).
- Input Characteristics: High-impedance inputs for reliable logic detection.
- Output Characteristics: Capable of sourcing/sinking standard TTL loads.

Counter/Timer Performance:
- Resolution: 16 bits per channel.
- Functionality: Event counting, frequency measurement, pulse width modulation, or timing control.
- Clock Source: Internal or external clock input (depending on configuration).

System Performance:
- Interrupt Handling: Supports multiple IRQ lines for flexible system integration.
- Data Throughput: Optimized for ISA bus bandwidth, ensuring stable data transfer at maximum sampling rates.

Limitations:
- Designed for ISA bus systems; not compatible with modern PCI or PCIe slots without adapters.
- Sampling rate limited to 30 kS/s, not suitable for high-speed applications requiring MHz-level sampling.
- Single-ended input configuration; differential input measurement not supported.

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8. Standards & Compliance

- Bus Standard: Compliant with ISA (Industry Standard Architecture) specifications.
- Electrical Standards: TTL logic levels for digital I/O conform to standard 5 V TTL specifications.
- Safety and EMC: Designed to meet general industrial and laboratory safety requirements.
- Quality Assurance: Manufactured under Contec’s ISO-certified quality management system.
- Environmental Compliance: RoHS-compliant materials and lead-free soldering (depending on production batch).
- Regulatory Compliance: Meets CE and FCC Class A/B emission standards for industrial computing equipment (typical for Contec products).

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9. Additional Information

Warranty:
Typically covered by Contec’s standard limited warranty (commonly one year from date of purchase), covering defects in materials and workmanship under normal use.

Support:
- Technical documentation, driver downloads, and software utilities available from Contec’s official website.
- Customer support via email, phone, or online service portal.
- Application notes and example programs provided for integration with various programming environments.

Maintenance:
- Periodic inspection of connectors and signal cables recommended.
- Keep the card free from dust and contaminants to ensure long-term reliability.
- Calibration verification may be performed periodically for precision-critical applications.

Software & Updates:
- Compatible with Contec’s driver libraries and SDKs for Windows and DOS.
- Example code and APIs available for C/C++ and other programming languages.
- Firmware updates (if applicable) provided through Contec’s support channels.

Lifecycle & Availability:
- Designed for long-term availability in industrial and embedded markets.
- Suitable for legacy system maintenance and replacement in ISA-based control systems.

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Summary:
The Contec ADC-30(PC) is a robust, ISA-based analog-to-digital conversion card offering 12-bit resolution, 30 kS/s sampling rate, and 8 single-ended analog input channels. It integrates 4 digital inputs, 4 digital outputs, and three 16-bit counter/timer channels, making it a versatile and compact solution for mixed-signal data acquisition and control. With flexible input ranges (±5 V or 0–10 V), selectable IRQ lines, and a standard D-type 37-pin connector, the ADC-30(PC) is engineered for reliable performance in industrial, laboratory, and educational environments. Its combination of analog precision, digital control, and counter/timer functionality makes it an ideal choice for engineers and system integrators seeking a dependable ISA-based data acquisition interface.