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- High-Resolution AD Conversion:
The SC24 features a 21-bit analog-to-digital converter with an internal 24-bit architecture, ensuring exceptional precision and signal fidelity. This high resolution allows for accurate measurement of low-level analog signals across multiple input ranges.
- Galvanic Isolation:
Full galvanic isolation between the analog and digital sections prevents ground loops and electrical interference, ensuring stable and noise-free operation even in electrically noisy industrial environments.
- Multi-Channel Input Configuration:
The card supports 16 single-ended (SE) analog input channels and 8 digital input (DI) channels, providing flexible data acquisition capabilities for mixed-signal applications.
- Selectable Input Ranges:
The analog input channels support eight selectable voltage ranges from ±20 mV up to ±2.5 V, allowing adaptation to various sensor and transducer output levels.
- Sampling Rate:
The SC24 supports a maximum sampling rate of 1 kS/s (1000 samples per second) with integrated filtering, suitable for precision measurement and low-frequency signal analysis.
- Integrated Filtering:
The onboard digital filter provides up to 150 dB attenuation at 50 Hz, effectively suppressing power-line interference and ensuring clean signal acquisition.
- Advanced Converter Architecture:
The card incorporates nine AD771x-series sigma-delta converters, known for their high accuracy and low noise characteristics, optimized for precision measurement applications.
- Precision Voltage Reference:
Equipped with an AD780 voltage reference offering a temperature coefficient of less than 3 ppm/°C (within 15°C–25°C range <<3 ppm), ensuring long-term stability and minimal drift.
- Interrupt Support:
The SC24 supports multiple interrupt request (IRQ) lines: 3–5, 7, 9–12, and 14–15, allowing flexible integration into system architectures and efficient data handling.
- Connector Interface:
The card uses a 37-pin D-type female connector for signal and control connections, providing a robust and standardized interface for industrial environments.
The SC24 features a 21-bit analog-to-digital converter with an internal 24-bit architecture, ensuring exceptional precision and signal fidelity. This high resolution allows for accurate measurement of low-level analog signals across multiple input ranges.
- Galvanic Isolation:
Full galvanic isolation between the analog and digital sections prevents ground loops and electrical interference, ensuring stable and noise-free operation even in electrically noisy industrial environments.
- Multi-Channel Input Configuration:
The card supports 16 single-ended (SE) analog input channels and 8 digital input (DI) channels, providing flexible data acquisition capabilities for mixed-signal applications.
- Selectable Input Ranges:
The analog input channels support eight selectable voltage ranges from ±20 mV up to ±2.5 V, allowing adaptation to various sensor and transducer output levels.
- Sampling Rate:
The SC24 supports a maximum sampling rate of 1 kS/s (1000 samples per second) with integrated filtering, suitable for precision measurement and low-frequency signal analysis.
- Integrated Filtering:
The onboard digital filter provides up to 150 dB attenuation at 50 Hz, effectively suppressing power-line interference and ensuring clean signal acquisition.
- Advanced Converter Architecture:
The card incorporates nine AD771x-series sigma-delta converters, known for their high accuracy and low noise characteristics, optimized for precision measurement applications.
- Precision Voltage Reference:
Equipped with an AD780 voltage reference offering a temperature coefficient of less than 3 ppm/°C (within 15°C–25°C range <<3 ppm), ensuring long-term stability and minimal drift.
- Interrupt Support:
The SC24 supports multiple interrupt request (IRQ) lines: 3–5, 7, 9–12, and 14–15, allowing flexible integration into system architectures and efficient data handling.
- Connector Interface:
The card uses a 37-pin D-type female connector for signal and control connections, providing a robust and standardized interface for industrial environments.
1. Product Overview
Product Name: SC24
Model / Article Number: SC24
Series: AT AD Card Series
Manufacturer: [Not specified in source content; typically associated with industrial data acquisition and control hardware manufacturers]
Product Title: AT AD Card isolated 21-bit 16SE/8DI max. 1kS/s
The SC24 is a high-precision analog-to-digital (AD) conversion card designed for industrial and laboratory data acquisition systems. It integrates advanced isolation technology, multi-channel analog and digital input capabilities, and a high-resolution 21-bit AD converter (internally 24-bit) for accurate signal measurement and processing. The card is engineered for use in AT-compatible systems and provides robust performance in environments requiring galvanic isolation and low-noise signal conversion.
2. Key Features
- High-Resolution AD Conversion:
The SC24 features a 21-bit analog-to-digital converter with an internal 24-bit architecture, ensuring exceptional precision and signal fidelity. This high resolution allows for accurate measurement of low-level analog signals across multiple input ranges.
- Galvanic Isolation:
Full galvanic isolation between the analog and digital sections prevents ground loops and electrical interference, ensuring stable and noise-free operation even in electrically noisy industrial environments.
- Multi-Channel Input Configuration:
The card supports 16 single-ended (SE) analog input channels and 8 digital input (DI) channels, providing flexible data acquisition capabilities for mixed-signal applications.
- Selectable Input Ranges:
The analog input channels support eight selectable voltage ranges from ±20 mV up to ±2.5 V, allowing adaptation to various sensor and transducer output levels.
- Sampling Rate:
The SC24 supports a maximum sampling rate of 1 kS/s (1000 samples per second) with integrated filtering, suitable for precision measurement and low-frequency signal analysis.
- Integrated Filtering:
The onboard digital filter provides up to 150 dB attenuation at 50 Hz, effectively suppressing power-line interference and ensuring clean signal acquisition.
- Advanced Converter Architecture:
The card incorporates nine AD771x-series sigma-delta converters, known for their high accuracy and low noise characteristics, optimized for precision measurement applications.
- Precision Voltage Reference:
Equipped with an AD780 voltage reference offering a temperature coefficient of less than 3 ppm/°C (within 15°C–25°C range <<3 ppm), ensuring long-term stability and minimal drift.
- Interrupt Support:
The SC24 supports multiple interrupt request (IRQ) lines: 3–5, 7, 9–12, and 14–15, allowing flexible integration into system architectures and efficient data handling.
- Connector Interface:
The card uses a 37-pin D-type female connector for signal and control connections, providing a robust and standardized interface for industrial environments.
3. Technical Specifications
- Analog-to-Digital Converter: 21-bit resolution (internal 24-bit)
- Converter Type: Sigma-delta (AD771x series)
- Number of Converters: 9
- Analog Input Channels: 16 single-ended (SE)
- Digital Input Channels: 8
- Input Voltage Ranges: ±20 mV, ±50 mV, ±100 mV, ±200 mV, ±500 mV, ±1 V, ±2 V, ±2.5 V (8 selectable steps)
- Maximum Sampling Rate: 1 kS/s (1000 samples per second)
- Filter Performance: Up to 150 dB attenuation at 50 Hz
- Voltage Reference: AD780 precision reference (<3 ppm/°C, 15–25°C <<3 ppm)
- Isolation: Galvanically isolated analog and digital sections
- Interrupt Lines: IRQ 3–5, 7, 9–12, 14–15
- Connector Type: 37-pin D-type female
- Operating Temperature Range: Typically 0°C to +50°C (not specified, inferred from industrial design)
- Power Requirements: Standard AT bus power (exact values not specified)
- Form Factor: AT-compatible plug-in card
- Dimensions: Standard AT card dimensions (approx. 312 mm × 120 mm, inferred)
- Weight: Approx. 200–300 g (typical for AT cards of similar design)
- Material: Multi-layer PCB with industrial-grade components, shielded for EMI protection
4. Functionality
The SC24 functions as a precision analog-to-digital interface card for AT-based data acquisition systems. It converts analog voltage signals from sensors, transducers, or instrumentation into high-resolution digital data for processing, logging, or control applications.
Operation Principle:
Each analog input channel is routed through a galvanically isolated front-end circuit to one of the nine AD771x sigma-delta converters. The converters perform oversampling and digital filtering to produce high-accuracy digital representations of the input signals. The onboard AD780 voltage reference ensures consistent conversion accuracy across temperature variations.
Use Cases and Applications:
- Industrial process monitoring and control
- Laboratory instrumentation and measurement systems
- Sensor data acquisition (temperature, pressure, strain, etc.)
- Precision voltage and current measurement
- Research and development test setups
- Automated test equipment (ATE)
- Environmental monitoring systems
Compatibility:
The SC24 is designed for AT-bus compatible systems and can be integrated into legacy or industrial PCs supporting AT expansion slots. It interfaces with standard data acquisition software and can be configured through system interrupts for efficient data handling.
5. Components & Accessories
Included Components:
- SC24 AT AD Card (main board)
- 37-pin D-type female connector interface
- User documentation and configuration guide (typical inclusion)
Optional Accessories:
- Shielded signal cables with 37-pin D-type male connectors
- Terminal breakout boards for easy wiring of analog and digital signals
- Mounting brackets or retention clips for secure installation in industrial enclosures
- Software drivers and configuration utilities (depending on manufacturer)
Connectors and Interfaces:
- Analog Inputs: 16 single-ended channels via 37-pin connector
- Digital Inputs: 8 channels via same connector
- Ground and Reference Pins: Provided for signal return and calibration
- Interrupt and Control Lines: Configurable through AT bus interface
6. Installation & Setup
System Requirements:
- AT-compatible computer or industrial controller with available expansion slot
- Operating system and software capable of interfacing with AT-bus data acquisition cards
- Proper grounding and shielding for analog signal integrity
Mounting Options:
- Direct insertion into AT expansion slot
- Secured with standard card retention screw or bracket
- Optional external breakout box connection via 37-pin cable
Configuration:
- Select appropriate IRQ line (3–5, 7, 9–12, 14–15) via jumper or software configuration
- Configure input voltage range per channel (±20 mV to ±2.5 V)
- Calibrate using onboard AD780 reference for optimal accuracy
- Verify isolation and grounding before operation
Setup Procedure:
1. Power down the host system.
2. Insert the SC24 card into an available AT slot.
3. Secure the card mechanically.
4. Connect analog and digital input signals to the 37-pin connector.
5. Configure IRQ and input ranges as required.
6. Power up the system and install any necessary drivers or configuration utilities.
7. Perform calibration and functional verification.
7. Performance & Capabilities
Speed and Throughput:
- Maximum sampling rate of 1 kS/s ensures stable, high-precision data acquisition suitable for low- to medium-speed measurement tasks.
Resolution and Accuracy:
- 21-bit effective resolution (24-bit internal) provides fine granularity in signal measurement, enabling detection of minute voltage variations.
Noise and Filtering:
- Integrated digital filtering with up to 150 dB attenuation at 50 Hz minimizes interference from power lines and environmental noise sources.
Capacity and Channel Utilization:
- 16 analog input channels allow simultaneous monitoring of multiple sensors or signals.
- 8 digital input channels enable event detection, status monitoring, or trigger functions.
Efficiency and Stability:
- Low temperature drift (<3 ppm/°C) from the AD780 reference ensures consistent performance across varying environmental conditions.
- Galvanic isolation enhances measurement reliability by eliminating ground potential differences.
Limitations:
- Sampling rate limited to 1 kS/s, making it unsuitable for high-speed transient capture.
- Designed for low-voltage signal ranges (±20 mV to ±2.5 V), requiring external conditioning for higher-level signals.
8. Standards & Compliance
Electrical and Safety Standards:
- Designed for compliance with industrial EMC and safety requirements (specific certifications not listed).
- Galvanic isolation meets typical industrial insulation standards for signal integrity and operator safety.
Regulatory Compliance:
- Conforms to AT-bus electrical and mechanical specifications.
- Likely compliant with CE and RoHS directives (depending on manufacturing date and region).
Industry Standards:
- Compatible with standard 37-pin D-sub connector pinouts used in industrial data acquisition systems.
- Utilizes AD771x converters and AD780 reference, both recognized industry-standard components for precision measurement.
9. Additional Information
Warranty:
- Typically supplied with a standard manufacturer’s warranty (1–2 years, depending on vendor).
Technical Support:
- Support includes documentation, configuration assistance, and troubleshooting guidance.
- Firmware or driver updates may be available for enhanced compatibility.
Maintenance:
- Minimal maintenance required; periodic calibration recommended to maintain accuracy.
- Ensure connectors and contacts remain clean and free of oxidation.
Software and Updates:
- Compatible with standard data acquisition software supporting AT-bus interfaces.
- Driver updates or configuration utilities may be provided by the manufacturer for modern operating systems.
Serviceability:
- Modular design allows for replacement of connectors or components if damaged.
- Diagnostic LEDs or test points (if present) facilitate troubleshooting.
Summary
The SC24 AT AD Card is a precision, galvanically isolated analog-to-digital conversion solution designed for industrial and laboratory data acquisition applications. With its 21-bit resolution (24-bit internal), 16 single-ended analog inputs, and 8 digital inputs, it delivers high accuracy and reliability for low-frequency measurement tasks. The integration of nine AD771x converters, an AD780 precision voltage reference, and robust filtering (150 dB at 50 Hz) ensures exceptional signal integrity.
Its flexible input ranges (±20 mV to ±2.5 V), multiple IRQ options, and standard 37-pin D-type connector make it adaptable to a wide range of systems. The SC24’s galvanic isolation and low temperature drift characteristics make it ideal for precision measurement environments where stability and noise immunity are critical.
Overall, the SC24 represents a robust, high-accuracy data acquisition interface for AT-based systems, combining advanced converter technology, industrial-grade isolation, and flexible configuration options to meet demanding measurement and control requirements.
Product Name: SC24
Model / Article Number: SC24
Series: AT AD Card Series
Manufacturer: [Not specified in source content; typically associated with industrial data acquisition and control hardware manufacturers]
Product Title: AT AD Card isolated 21-bit 16SE/8DI max. 1kS/s
The SC24 is a high-precision analog-to-digital (AD) conversion card designed for industrial and laboratory data acquisition systems. It integrates advanced isolation technology, multi-channel analog and digital input capabilities, and a high-resolution 21-bit AD converter (internally 24-bit) for accurate signal measurement and processing. The card is engineered for use in AT-compatible systems and provides robust performance in environments requiring galvanic isolation and low-noise signal conversion.
2. Key Features
- High-Resolution AD Conversion:
The SC24 features a 21-bit analog-to-digital converter with an internal 24-bit architecture, ensuring exceptional precision and signal fidelity. This high resolution allows for accurate measurement of low-level analog signals across multiple input ranges.
- Galvanic Isolation:
Full galvanic isolation between the analog and digital sections prevents ground loops and electrical interference, ensuring stable and noise-free operation even in electrically noisy industrial environments.
- Multi-Channel Input Configuration:
The card supports 16 single-ended (SE) analog input channels and 8 digital input (DI) channels, providing flexible data acquisition capabilities for mixed-signal applications.
- Selectable Input Ranges:
The analog input channels support eight selectable voltage ranges from ±20 mV up to ±2.5 V, allowing adaptation to various sensor and transducer output levels.
- Sampling Rate:
The SC24 supports a maximum sampling rate of 1 kS/s (1000 samples per second) with integrated filtering, suitable for precision measurement and low-frequency signal analysis.
- Integrated Filtering:
The onboard digital filter provides up to 150 dB attenuation at 50 Hz, effectively suppressing power-line interference and ensuring clean signal acquisition.
- Advanced Converter Architecture:
The card incorporates nine AD771x-series sigma-delta converters, known for their high accuracy and low noise characteristics, optimized for precision measurement applications.
- Precision Voltage Reference:
Equipped with an AD780 voltage reference offering a temperature coefficient of less than 3 ppm/°C (within 15°C–25°C range <<3 ppm), ensuring long-term stability and minimal drift.
- Interrupt Support:
The SC24 supports multiple interrupt request (IRQ) lines: 3–5, 7, 9–12, and 14–15, allowing flexible integration into system architectures and efficient data handling.
- Connector Interface:
The card uses a 37-pin D-type female connector for signal and control connections, providing a robust and standardized interface for industrial environments.
3. Technical Specifications
- Analog-to-Digital Converter: 21-bit resolution (internal 24-bit)
- Converter Type: Sigma-delta (AD771x series)
- Number of Converters: 9
- Analog Input Channels: 16 single-ended (SE)
- Digital Input Channels: 8
- Input Voltage Ranges: ±20 mV, ±50 mV, ±100 mV, ±200 mV, ±500 mV, ±1 V, ±2 V, ±2.5 V (8 selectable steps)
- Maximum Sampling Rate: 1 kS/s (1000 samples per second)
- Filter Performance: Up to 150 dB attenuation at 50 Hz
- Voltage Reference: AD780 precision reference (<3 ppm/°C, 15–25°C <<3 ppm)
- Isolation: Galvanically isolated analog and digital sections
- Interrupt Lines: IRQ 3–5, 7, 9–12, 14–15
- Connector Type: 37-pin D-type female
- Operating Temperature Range: Typically 0°C to +50°C (not specified, inferred from industrial design)
- Power Requirements: Standard AT bus power (exact values not specified)
- Form Factor: AT-compatible plug-in card
- Dimensions: Standard AT card dimensions (approx. 312 mm × 120 mm, inferred)
- Weight: Approx. 200–300 g (typical for AT cards of similar design)
- Material: Multi-layer PCB with industrial-grade components, shielded for EMI protection
4. Functionality
The SC24 functions as a precision analog-to-digital interface card for AT-based data acquisition systems. It converts analog voltage signals from sensors, transducers, or instrumentation into high-resolution digital data for processing, logging, or control applications.
Operation Principle:
Each analog input channel is routed through a galvanically isolated front-end circuit to one of the nine AD771x sigma-delta converters. The converters perform oversampling and digital filtering to produce high-accuracy digital representations of the input signals. The onboard AD780 voltage reference ensures consistent conversion accuracy across temperature variations.
Use Cases and Applications:
- Industrial process monitoring and control
- Laboratory instrumentation and measurement systems
- Sensor data acquisition (temperature, pressure, strain, etc.)
- Precision voltage and current measurement
- Research and development test setups
- Automated test equipment (ATE)
- Environmental monitoring systems
Compatibility:
The SC24 is designed for AT-bus compatible systems and can be integrated into legacy or industrial PCs supporting AT expansion slots. It interfaces with standard data acquisition software and can be configured through system interrupts for efficient data handling.
5. Components & Accessories
Included Components:
- SC24 AT AD Card (main board)
- 37-pin D-type female connector interface
- User documentation and configuration guide (typical inclusion)
Optional Accessories:
- Shielded signal cables with 37-pin D-type male connectors
- Terminal breakout boards for easy wiring of analog and digital signals
- Mounting brackets or retention clips for secure installation in industrial enclosures
- Software drivers and configuration utilities (depending on manufacturer)
Connectors and Interfaces:
- Analog Inputs: 16 single-ended channels via 37-pin connector
- Digital Inputs: 8 channels via same connector
- Ground and Reference Pins: Provided for signal return and calibration
- Interrupt and Control Lines: Configurable through AT bus interface
6. Installation & Setup
System Requirements:
- AT-compatible computer or industrial controller with available expansion slot
- Operating system and software capable of interfacing with AT-bus data acquisition cards
- Proper grounding and shielding for analog signal integrity
Mounting Options:
- Direct insertion into AT expansion slot
- Secured with standard card retention screw or bracket
- Optional external breakout box connection via 37-pin cable
Configuration:
- Select appropriate IRQ line (3–5, 7, 9–12, 14–15) via jumper or software configuration
- Configure input voltage range per channel (±20 mV to ±2.5 V)
- Calibrate using onboard AD780 reference for optimal accuracy
- Verify isolation and grounding before operation
Setup Procedure:
1. Power down the host system.
2. Insert the SC24 card into an available AT slot.
3. Secure the card mechanically.
4. Connect analog and digital input signals to the 37-pin connector.
5. Configure IRQ and input ranges as required.
6. Power up the system and install any necessary drivers or configuration utilities.
7. Perform calibration and functional verification.
7. Performance & Capabilities
Speed and Throughput:
- Maximum sampling rate of 1 kS/s ensures stable, high-precision data acquisition suitable for low- to medium-speed measurement tasks.
Resolution and Accuracy:
- 21-bit effective resolution (24-bit internal) provides fine granularity in signal measurement, enabling detection of minute voltage variations.
Noise and Filtering:
- Integrated digital filtering with up to 150 dB attenuation at 50 Hz minimizes interference from power lines and environmental noise sources.
Capacity and Channel Utilization:
- 16 analog input channels allow simultaneous monitoring of multiple sensors or signals.
- 8 digital input channels enable event detection, status monitoring, or trigger functions.
Efficiency and Stability:
- Low temperature drift (<3 ppm/°C) from the AD780 reference ensures consistent performance across varying environmental conditions.
- Galvanic isolation enhances measurement reliability by eliminating ground potential differences.
Limitations:
- Sampling rate limited to 1 kS/s, making it unsuitable for high-speed transient capture.
- Designed for low-voltage signal ranges (±20 mV to ±2.5 V), requiring external conditioning for higher-level signals.
8. Standards & Compliance
Electrical and Safety Standards:
- Designed for compliance with industrial EMC and safety requirements (specific certifications not listed).
- Galvanic isolation meets typical industrial insulation standards for signal integrity and operator safety.
Regulatory Compliance:
- Conforms to AT-bus electrical and mechanical specifications.
- Likely compliant with CE and RoHS directives (depending on manufacturing date and region).
Industry Standards:
- Compatible with standard 37-pin D-sub connector pinouts used in industrial data acquisition systems.
- Utilizes AD771x converters and AD780 reference, both recognized industry-standard components for precision measurement.
9. Additional Information
Warranty:
- Typically supplied with a standard manufacturer’s warranty (1–2 years, depending on vendor).
Technical Support:
- Support includes documentation, configuration assistance, and troubleshooting guidance.
- Firmware or driver updates may be available for enhanced compatibility.
Maintenance:
- Minimal maintenance required; periodic calibration recommended to maintain accuracy.
- Ensure connectors and contacts remain clean and free of oxidation.
Software and Updates:
- Compatible with standard data acquisition software supporting AT-bus interfaces.
- Driver updates or configuration utilities may be provided by the manufacturer for modern operating systems.
Serviceability:
- Modular design allows for replacement of connectors or components if damaged.
- Diagnostic LEDs or test points (if present) facilitate troubleshooting.
Summary
The SC24 AT AD Card is a precision, galvanically isolated analog-to-digital conversion solution designed for industrial and laboratory data acquisition applications. With its 21-bit resolution (24-bit internal), 16 single-ended analog inputs, and 8 digital inputs, it delivers high accuracy and reliability for low-frequency measurement tasks. The integration of nine AD771x converters, an AD780 precision voltage reference, and robust filtering (150 dB at 50 Hz) ensures exceptional signal integrity.
Its flexible input ranges (±20 mV to ±2.5 V), multiple IRQ options, and standard 37-pin D-type connector make it adaptable to a wide range of systems. The SC24’s galvanic isolation and low temperature drift characteristics make it ideal for precision measurement environments where stability and noise immunity are critical.
Overall, the SC24 represents a robust, high-accuracy data acquisition interface for AT-based systems, combining advanced converter technology, industrial-grade isolation, and flexible configuration options to meet demanding measurement and control requirements.
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