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- High-Resolution A/D Conversion:
12-bit resolution ensures precise analog signal digitization, suitable for applications requiring accurate voltage measurement and signal analysis.
- Sampling Rate:
Capable of up to 40,000 samples per second (40 kS/s), enabling real-time data acquisition for dynamic signals.
- Analog Input Configuration:
Provides 8 single-ended (SE) analog input channels with an input voltage range of ±5 V, allowing simultaneous monitoring of multiple analog sources.
- ISA Bus Interface:
Designed for standard ISA bus architecture, ensuring compatibility with legacy and industrial PC systems.
- Digital I/O Capability:
Includes 3 or 4 TTL-level digital input/output lines, configurable for control or monitoring of external devices.
- Integrated Counter/Timer Functions:
Features three 16-bit counter/timer channels, enabling event counting, frequency measurement, or timing control applications.
- Interrupt Support:
Supports multiple IRQ lines (2, 3, 4, 5, 6, 7) for flexible system configuration and efficient CPU interrupt handling.
- Low Power Consumption:
Operates with minimal power requirements: +5 VDC at 30 mA and ±12 VDC at 22 mA, making it suitable for energy-efficient embedded systems.
- Compact Form Factor:
Board dimensions of 127 mm × 107 mm allow installation in space-constrained PC enclosures or compact industrial systems.
- Standard Connector Interface:
Equipped with a D-type 37-pin male connector, providing a robust and standardized interface for analog, digital, and timing signals.
- Reliable Manufacturer:
Produced by Contec Co., Ltd., a recognized manufacturer of industrial computing and measurement hardware, ensuring quality and long-term support.
12-bit resolution ensures precise analog signal digitization, suitable for applications requiring accurate voltage measurement and signal analysis.
- Sampling Rate:
Capable of up to 40,000 samples per second (40 kS/s), enabling real-time data acquisition for dynamic signals.
- Analog Input Configuration:
Provides 8 single-ended (SE) analog input channels with an input voltage range of ±5 V, allowing simultaneous monitoring of multiple analog sources.
- ISA Bus Interface:
Designed for standard ISA bus architecture, ensuring compatibility with legacy and industrial PC systems.
- Digital I/O Capability:
Includes 3 or 4 TTL-level digital input/output lines, configurable for control or monitoring of external devices.
- Integrated Counter/Timer Functions:
Features three 16-bit counter/timer channels, enabling event counting, frequency measurement, or timing control applications.
- Interrupt Support:
Supports multiple IRQ lines (2, 3, 4, 5, 6, 7) for flexible system configuration and efficient CPU interrupt handling.
- Low Power Consumption:
Operates with minimal power requirements: +5 VDC at 30 mA and ±12 VDC at 22 mA, making it suitable for energy-efficient embedded systems.
- Compact Form Factor:
Board dimensions of 127 mm × 107 mm allow installation in space-constrained PC enclosures or compact industrial systems.
- Standard Connector Interface:
Equipped with a D-type 37-pin male connector, providing a robust and standardized interface for analog, digital, and timing signals.
- Reliable Manufacturer:
Produced by Contec Co., Ltd., a recognized manufacturer of industrial computing and measurement hardware, ensuring quality and long-term support.
1. Product Overview
Name: PC AD Card 40kS/s 12bit 8SE 3/4 TTL IO
Model: AD12-8LT(PC)
Series: AD12 Series – Low-Power Analog-to-Digital (A/D) Conversion Cards for PC/ISA Bus Systems
Article Number: AD12-8LT(PC)
Manufacturer: Contec Co., Ltd.
The Contec AD12-8LT(PC) is a high-performance, low-power analog-to-digital (A/D) conversion card designed for PC-based data acquisition and control applications. It is an ISA-bus interface A/D converter board that provides 8 single-ended analog input channels, 12-bit resolution, and a maximum sampling rate of 40 kS/s. The board integrates TTL-level digital I/O lines, three 16-bit counter/timer channels, and supports multiple IRQ (interrupt request) lines for flexible system integration. Compact in size and optimized for low power consumption, the AD12-8LT(PC) is ideal for embedded measurement systems, laboratory instrumentation, and industrial automation environments requiring reliable analog signal acquisition and digital control.
2. Key Features
- High-Resolution A/D Conversion:
12-bit resolution ensures precise analog signal digitization, suitable for applications requiring accurate voltage measurement and signal analysis.
- Sampling Rate:
Capable of up to 40,000 samples per second (40 kS/s), enabling real-time data acquisition for dynamic signals.
- Analog Input Configuration:
Provides 8 single-ended (SE) analog input channels with an input voltage range of ±5 V, allowing simultaneous monitoring of multiple analog sources.
- ISA Bus Interface:
Designed for standard ISA bus architecture, ensuring compatibility with legacy and industrial PC systems.
- Digital I/O Capability:
Includes 3 or 4 TTL-level digital input/output lines, configurable for control or monitoring of external devices.
- Integrated Counter/Timer Functions:
Features three 16-bit counter/timer channels, enabling event counting, frequency measurement, or timing control applications.
- Interrupt Support:
Supports multiple IRQ lines (2, 3, 4, 5, 6, 7) for flexible system configuration and efficient CPU interrupt handling.
- Low Power Consumption:
Operates with minimal power requirements: +5 VDC at 30 mA and ±12 VDC at 22 mA, making it suitable for energy-efficient embedded systems.
- Compact Form Factor:
Board dimensions of 127 mm × 107 mm allow installation in space-constrained PC enclosures or compact industrial systems.
- Standard Connector Interface:
Equipped with a D-type 37-pin male connector, providing a robust and standardized interface for analog, digital, and timing signals.
- Reliable Manufacturer:
Produced by Contec Co., Ltd., a recognized manufacturer of industrial computing and measurement hardware, ensuring quality and long-term support.
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Model | AD12-8LT(PC) |
| Bus Interface | ISA Bus |
| Analog Input Channels | 8 Single-Ended (SE) |
| Resolution | 12 bits |
| Maximum Sampling Rate | 40 kS/s (40,000 samples per second) |
| Input Voltage Range | ±5 V |
| Input Type | Single-Ended |
| Digital I/O Lines | 3 or 4 TTL-level I/O lines |
| Counter/Timer Channels | 3 channels, 16-bit each |
| Interrupt Lines (IRQ) | Selectable: 2, 3, 4, 5, 6, 7 |
| Power Requirements | +5 VDC at 30 mA, ±12 VDC at 22 mA |
| Connector Type | D-type 37-pin male |
| Board Dimensions | 127 mm (W) × 107 mm (D) |
| Mounting Type | Plug-in ISA card |
| Operating Voltage Levels (Digital I/O) | TTL compatible |
| Manufacturer | Contec Co., Ltd. |
| Product Category | PC-based A/D Conversion Card |
4. Functionality
The AD12-8LT(PC) functions as an analog-to-digital interface between external analog signals and a PC’s digital processing environment. It converts analog voltage inputs into 12-bit digital data that can be processed, stored, or analyzed by software running on the host computer.
- Analog Input Operation:
Each of the eight single-ended channels can measure voltage signals within a ±5 V range. The 12-bit A/D converter digitizes these signals with a resolution of 1 part in 4096, providing fine granularity for precise measurement.
- Sampling Control:
The board supports sampling rates up to 40 kS/s, allowing users to capture both slow and moderately fast-changing signals. Sampling can be triggered by software commands or external timing signals, depending on system configuration.
- Digital I/O Function:
The 3/4 TTL I/O lines can be used for control signals, status monitoring, or synchronization with external devices such as relays, sensors, or actuators.
- Counter/Timer Functionality:
The three 16-bit counter/timer channels can be used for event counting, pulse width measurement, or generating timing intervals. These counters can operate independently or in coordination with the analog input subsystem.
- Interrupt Handling:
The board supports multiple interrupt request lines (IRQ 2, 3, 4, 5, 6, 7), allowing flexible integration into PC systems and efficient handling of data acquisition events without excessive CPU polling.
- Use Cases and Applications:
- Laboratory data acquisition and signal monitoring
- Industrial process control and automation
- Embedded measurement systems
- Educational and research instrumentation
- Sensor data logging and analysis
- Test and measurement setups requiring analog and digital interfacing
- Compatibility:
Compatible with PCs equipped with ISA expansion slots. The board can be integrated with Contec’s software drivers and development tools for Windows or DOS environments, depending on system requirements.
5. Components & Accessories
Included Components:
- AD12-8LT(PC) main board (ISA card)
- D-type 37-pin male connector (onboard)
- User documentation (manual, installation guide)
- Driver and utility software (typically provided by Contec for supported OS versions)
Optional Accessories (available separately):
- Shielded analog input cables (D-sub 37-pin to terminal block)
- External terminal boards for signal wiring and breakout connections
- Mounting brackets or extension cables for custom installations
- Software development kits (SDKs) for programming and integration with custom applications
Connectors:
- Analog/Digital I/O Connector: D-type 37-pin male
- Analog input channels (CH0–CH7)
- Digital I/O lines (TTL)
- Counter/timer signal lines
- Ground and reference connections
6. Installation & Setup
System Requirements:
- PC with available ISA expansion slot
- Compatible operating system (typically DOS, Windows 9x/XP, or industrial OS supported by Contec drivers)
- Power supply providing +5 VDC and ±12 VDC rails
Installation Steps:
1. Power off the PC and disconnect it from the power source.
2. Insert the AD12-8LT(PC) card into an available ISA slot, ensuring proper alignment and secure seating.
3. Connect external analog and digital signals to the D-type 37-pin connector using appropriate cables or terminal boards.
4. Configure the IRQ line and I/O address settings using onboard jumpers or DIP switches (as per Contec’s configuration guide).
5. Power on the PC and install the provided driver software.
6. Verify device recognition and perform calibration or test acquisition using Contec’s diagnostic utilities.
Mounting Options:
- Standard ISA slot mounting within PC chassis
- Optional external chassis or rack-mount configurations using extension cables
Configuration:
- IRQ selection via jumper settings
- Base address configuration for ISA bus mapping
- Software configuration for channel selection, sampling rate, and trigger mode
7. Performance & Capabilities
- Sampling Speed: Up to 40 kS/s, suitable for medium-speed data acquisition tasks.
- Resolution: 12-bit, providing 4096 discrete levels for analog-to-digital conversion.
- Input Range: ±5 V, optimized for low-voltage sensor and instrumentation signals.
- Accuracy: Determined by 12-bit resolution and internal reference stability (typical for Contec A/D boards).
- Digital I/O Performance: TTL-compatible, capable of interfacing with standard logic-level devices.
- Counter/Timer Performance: Three independent 16-bit counters support event counting, frequency measurement, and timing generation.
- Power Efficiency: Low current draw (30 mA at +5 V, 22 mA at ±12 V) minimizes system power load.
- Reliability: Industrial-grade design ensures stable operation under continuous use.
- Limitations:
- ISA bus interface limits compatibility with modern PCs lacking ISA slots.
- Sampling rate (40 kS/s) may not be sufficient for high-speed signal acquisition.
- ±5 V input range may require external signal conditioning for higher-voltage sources.
8. Standards & Compliance
- Bus Standard: Compliant with ISA (Industry Standard Architecture) electrical and mechanical specifications.
- Signal Standards: TTL-compatible digital I/O levels.
- Electrical Safety: Designed to meet standard PC interface safety requirements.
- EMC Compliance: Manufactured in accordance with Contec’s industrial quality and electromagnetic compatibility standards.
- Quality Assurance: Produced under ISO-certified manufacturing processes (Contec Co., Ltd. quality system).
- Environmental Compliance: RoHS-compliant materials and lead-free soldering (depending on production batch).
9. Additional Information
- Warranty: Typically includes a standard manufacturer’s warranty (1 year or as specified by Contec) covering defects in materials and workmanship.
- Technical Support: Contec provides technical documentation, driver updates, and customer support through its official website and authorized distributors.
- Maintenance:
- Periodic inspection of connectors and contacts recommended.
- Keep board free from dust and contaminants.
- Avoid exposure to excessive heat or vibration.
- Software & Updates:
- Driver and utility software available for supported operating systems.
- SDKs and sample programs provided for integration with custom applications.
- Firmware updates (if applicable) available through Contec’s support channels.
- Service & Replacement:
- Replacement parts and accessories available through Contec’s authorized service centers.
- Long-term availability ensured for industrial customers requiring extended product lifecycle support.
Summary
The Contec AD12-8LT(PC) is a compact, low-power, 12-bit analog-to-digital conversion card designed for ISA-bus PCs. With 8 single-ended analog input channels, 40 kS/s sampling rate, 3/4 TTL digital I/O lines, and three 16-bit counter/timer channels, it provides a versatile platform for data acquisition, control, and measurement applications. Its ±5 V input range, low current consumption, and robust D-type 37-pin interface make it suitable for laboratory, industrial, and embedded environments.
Engineered by Contec Co., Ltd., the AD12-8LT(PC) combines precision, reliability, and flexibility, offering a proven solution for engineers and system integrators seeking dependable analog and digital interfacing in PC-based systems.
Name: PC AD Card 40kS/s 12bit 8SE 3/4 TTL IO
Model: AD12-8LT(PC)
Series: AD12 Series – Low-Power Analog-to-Digital (A/D) Conversion Cards for PC/ISA Bus Systems
Article Number: AD12-8LT(PC)
Manufacturer: Contec Co., Ltd.
The Contec AD12-8LT(PC) is a high-performance, low-power analog-to-digital (A/D) conversion card designed for PC-based data acquisition and control applications. It is an ISA-bus interface A/D converter board that provides 8 single-ended analog input channels, 12-bit resolution, and a maximum sampling rate of 40 kS/s. The board integrates TTL-level digital I/O lines, three 16-bit counter/timer channels, and supports multiple IRQ (interrupt request) lines for flexible system integration. Compact in size and optimized for low power consumption, the AD12-8LT(PC) is ideal for embedded measurement systems, laboratory instrumentation, and industrial automation environments requiring reliable analog signal acquisition and digital control.
2. Key Features
- High-Resolution A/D Conversion:
12-bit resolution ensures precise analog signal digitization, suitable for applications requiring accurate voltage measurement and signal analysis.
- Sampling Rate:
Capable of up to 40,000 samples per second (40 kS/s), enabling real-time data acquisition for dynamic signals.
- Analog Input Configuration:
Provides 8 single-ended (SE) analog input channels with an input voltage range of ±5 V, allowing simultaneous monitoring of multiple analog sources.
- ISA Bus Interface:
Designed for standard ISA bus architecture, ensuring compatibility with legacy and industrial PC systems.
- Digital I/O Capability:
Includes 3 or 4 TTL-level digital input/output lines, configurable for control or monitoring of external devices.
- Integrated Counter/Timer Functions:
Features three 16-bit counter/timer channels, enabling event counting, frequency measurement, or timing control applications.
- Interrupt Support:
Supports multiple IRQ lines (2, 3, 4, 5, 6, 7) for flexible system configuration and efficient CPU interrupt handling.
- Low Power Consumption:
Operates with minimal power requirements: +5 VDC at 30 mA and ±12 VDC at 22 mA, making it suitable for energy-efficient embedded systems.
- Compact Form Factor:
Board dimensions of 127 mm × 107 mm allow installation in space-constrained PC enclosures or compact industrial systems.
- Standard Connector Interface:
Equipped with a D-type 37-pin male connector, providing a robust and standardized interface for analog, digital, and timing signals.
- Reliable Manufacturer:
Produced by Contec Co., Ltd., a recognized manufacturer of industrial computing and measurement hardware, ensuring quality and long-term support.
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Model | AD12-8LT(PC) |
| Bus Interface | ISA Bus |
| Analog Input Channels | 8 Single-Ended (SE) |
| Resolution | 12 bits |
| Maximum Sampling Rate | 40 kS/s (40,000 samples per second) |
| Input Voltage Range | ±5 V |
| Input Type | Single-Ended |
| Digital I/O Lines | 3 or 4 TTL-level I/O lines |
| Counter/Timer Channels | 3 channels, 16-bit each |
| Interrupt Lines (IRQ) | Selectable: 2, 3, 4, 5, 6, 7 |
| Power Requirements | +5 VDC at 30 mA, ±12 VDC at 22 mA |
| Connector Type | D-type 37-pin male |
| Board Dimensions | 127 mm (W) × 107 mm (D) |
| Mounting Type | Plug-in ISA card |
| Operating Voltage Levels (Digital I/O) | TTL compatible |
| Manufacturer | Contec Co., Ltd. |
| Product Category | PC-based A/D Conversion Card |
4. Functionality
The AD12-8LT(PC) functions as an analog-to-digital interface between external analog signals and a PC’s digital processing environment. It converts analog voltage inputs into 12-bit digital data that can be processed, stored, or analyzed by software running on the host computer.
- Analog Input Operation:
Each of the eight single-ended channels can measure voltage signals within a ±5 V range. The 12-bit A/D converter digitizes these signals with a resolution of 1 part in 4096, providing fine granularity for precise measurement.
- Sampling Control:
The board supports sampling rates up to 40 kS/s, allowing users to capture both slow and moderately fast-changing signals. Sampling can be triggered by software commands or external timing signals, depending on system configuration.
- Digital I/O Function:
The 3/4 TTL I/O lines can be used for control signals, status monitoring, or synchronization with external devices such as relays, sensors, or actuators.
- Counter/Timer Functionality:
The three 16-bit counter/timer channels can be used for event counting, pulse width measurement, or generating timing intervals. These counters can operate independently or in coordination with the analog input subsystem.
- Interrupt Handling:
The board supports multiple interrupt request lines (IRQ 2, 3, 4, 5, 6, 7), allowing flexible integration into PC systems and efficient handling of data acquisition events without excessive CPU polling.
- Use Cases and Applications:
- Laboratory data acquisition and signal monitoring
- Industrial process control and automation
- Embedded measurement systems
- Educational and research instrumentation
- Sensor data logging and analysis
- Test and measurement setups requiring analog and digital interfacing
- Compatibility:
Compatible with PCs equipped with ISA expansion slots. The board can be integrated with Contec’s software drivers and development tools for Windows or DOS environments, depending on system requirements.
5. Components & Accessories
Included Components:
- AD12-8LT(PC) main board (ISA card)
- D-type 37-pin male connector (onboard)
- User documentation (manual, installation guide)
- Driver and utility software (typically provided by Contec for supported OS versions)
Optional Accessories (available separately):
- Shielded analog input cables (D-sub 37-pin to terminal block)
- External terminal boards for signal wiring and breakout connections
- Mounting brackets or extension cables for custom installations
- Software development kits (SDKs) for programming and integration with custom applications
Connectors:
- Analog/Digital I/O Connector: D-type 37-pin male
- Analog input channels (CH0–CH7)
- Digital I/O lines (TTL)
- Counter/timer signal lines
- Ground and reference connections
6. Installation & Setup
System Requirements:
- PC with available ISA expansion slot
- Compatible operating system (typically DOS, Windows 9x/XP, or industrial OS supported by Contec drivers)
- Power supply providing +5 VDC and ±12 VDC rails
Installation Steps:
1. Power off the PC and disconnect it from the power source.
2. Insert the AD12-8LT(PC) card into an available ISA slot, ensuring proper alignment and secure seating.
3. Connect external analog and digital signals to the D-type 37-pin connector using appropriate cables or terminal boards.
4. Configure the IRQ line and I/O address settings using onboard jumpers or DIP switches (as per Contec’s configuration guide).
5. Power on the PC and install the provided driver software.
6. Verify device recognition and perform calibration or test acquisition using Contec’s diagnostic utilities.
Mounting Options:
- Standard ISA slot mounting within PC chassis
- Optional external chassis or rack-mount configurations using extension cables
Configuration:
- IRQ selection via jumper settings
- Base address configuration for ISA bus mapping
- Software configuration for channel selection, sampling rate, and trigger mode
7. Performance & Capabilities
- Sampling Speed: Up to 40 kS/s, suitable for medium-speed data acquisition tasks.
- Resolution: 12-bit, providing 4096 discrete levels for analog-to-digital conversion.
- Input Range: ±5 V, optimized for low-voltage sensor and instrumentation signals.
- Accuracy: Determined by 12-bit resolution and internal reference stability (typical for Contec A/D boards).
- Digital I/O Performance: TTL-compatible, capable of interfacing with standard logic-level devices.
- Counter/Timer Performance: Three independent 16-bit counters support event counting, frequency measurement, and timing generation.
- Power Efficiency: Low current draw (30 mA at +5 V, 22 mA at ±12 V) minimizes system power load.
- Reliability: Industrial-grade design ensures stable operation under continuous use.
- Limitations:
- ISA bus interface limits compatibility with modern PCs lacking ISA slots.
- Sampling rate (40 kS/s) may not be sufficient for high-speed signal acquisition.
- ±5 V input range may require external signal conditioning for higher-voltage sources.
8. Standards & Compliance
- Bus Standard: Compliant with ISA (Industry Standard Architecture) electrical and mechanical specifications.
- Signal Standards: TTL-compatible digital I/O levels.
- Electrical Safety: Designed to meet standard PC interface safety requirements.
- EMC Compliance: Manufactured in accordance with Contec’s industrial quality and electromagnetic compatibility standards.
- Quality Assurance: Produced under ISO-certified manufacturing processes (Contec Co., Ltd. quality system).
- Environmental Compliance: RoHS-compliant materials and lead-free soldering (depending on production batch).
9. Additional Information
- Warranty: Typically includes a standard manufacturer’s warranty (1 year or as specified by Contec) covering defects in materials and workmanship.
- Technical Support: Contec provides technical documentation, driver updates, and customer support through its official website and authorized distributors.
- Maintenance:
- Periodic inspection of connectors and contacts recommended.
- Keep board free from dust and contaminants.
- Avoid exposure to excessive heat or vibration.
- Software & Updates:
- Driver and utility software available for supported operating systems.
- SDKs and sample programs provided for integration with custom applications.
- Firmware updates (if applicable) available through Contec’s support channels.
- Service & Replacement:
- Replacement parts and accessories available through Contec’s authorized service centers.
- Long-term availability ensured for industrial customers requiring extended product lifecycle support.
Summary
The Contec AD12-8LT(PC) is a compact, low-power, 12-bit analog-to-digital conversion card designed for ISA-bus PCs. With 8 single-ended analog input channels, 40 kS/s sampling rate, 3/4 TTL digital I/O lines, and three 16-bit counter/timer channels, it provides a versatile platform for data acquisition, control, and measurement applications. Its ±5 V input range, low current consumption, and robust D-type 37-pin interface make it suitable for laboratory, industrial, and embedded environments.
Engineered by Contec Co., Ltd., the AD12-8LT(PC) combines precision, reliability, and flexibility, offering a proven solution for engineers and system integrators seeking dependable analog and digital interfacing in PC-based systems.
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