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- Triple Counter/Timer Channels: Three independent 16-bit counter/timer modules for event counting, frequency measurement, pulse generation, and timing control.
- 64-Channel TTL Digital I/O: Provides 32 TTL-compatible digital input channels and 32 TTL-compatible digital output channels for flexible signal interfacing.
- ISA Bus Interface: Fully compatible with standard PC ISA bus architecture, supporting IRQ lines 2–7 for interrupt-driven operations.
- Dual 50-Pin Connectors: Two high-density 50-pin headers provide easy access to all I/O lines, simplifying cable management and external device connections.
- Compact Form Factor: Board dimensions of 190 mm × 99 mm, optimized for standard ISA slots in industrial PCs.
- High-Speed Digital I/O: TTL-level I/O supports fast switching and reliable signal integrity for real-time control.
- Programmable Interrupts: Configurable interrupt sources for event-driven data acquisition and control.
- Industrial Reliability: Designed for continuous operation in industrial environments, with robust PCB design and high-quality components.
- Flexible Software Integration: Compatible with standard programming environments and driver libraries for DOS, Windows, and real-time operating systems (depending on manufacturer support).
- 64-Channel TTL Digital I/O: Provides 32 TTL-compatible digital input channels and 32 TTL-compatible digital output channels for flexible signal interfacing.
- ISA Bus Interface: Fully compatible with standard PC ISA bus architecture, supporting IRQ lines 2–7 for interrupt-driven operations.
- Dual 50-Pin Connectors: Two high-density 50-pin headers provide easy access to all I/O lines, simplifying cable management and external device connections.
- Compact Form Factor: Board dimensions of 190 mm × 99 mm, optimized for standard ISA slots in industrial PCs.
- High-Speed Digital I/O: TTL-level I/O supports fast switching and reliable signal integrity for real-time control.
- Programmable Interrupts: Configurable interrupt sources for event-driven data acquisition and control.
- Industrial Reliability: Designed for continuous operation in industrial environments, with robust PCB design and high-quality components.
- Flexible Software Integration: Compatible with standard programming environments and driver libraries for DOS, Windows, and real-time operating systems (depending on manufacturer support).
1. Product Overview
Product Name: 3 Counter/Timer and 32/32 TTL DIO PC ISA Card
Model: AX5220A
Series: AX5000 Series (Industrial I/O Interface Cards)
Article Number: AX5220A
Manufacturer: Axiom
The Axiom AX5220A is a high-performance industrial-grade PC ISA interface card designed to provide precise timing, counting, and digital input/output (DIO) control for automation, measurement, and data acquisition systems. It integrates three programmable counter/timer channels and 64 channels of TTL-level digital I/O (32 inputs and 32 outputs) on a single board, offering a compact and efficient solution for real-time control and monitoring applications. The card is engineered for compatibility with legacy ISA bus architectures, making it ideal for industrial PCs, embedded systems, and laboratory instrumentation setups that require reliable digital interfacing and timing control.
2. Key Features
- Triple Counter/Timer Channels: Three independent 16-bit counter/timer modules for event counting, frequency measurement, pulse generation, and timing control.
- 64-Channel TTL Digital I/O: Provides 32 TTL-compatible digital input channels and 32 TTL-compatible digital output channels for flexible signal interfacing.
- ISA Bus Interface: Fully compatible with standard PC ISA bus architecture, supporting IRQ lines 2–7 for interrupt-driven operations.
- Dual 50-Pin Connectors: Two high-density 50-pin headers provide easy access to all I/O lines, simplifying cable management and external device connections.
- Compact Form Factor: Board dimensions of 190 mm × 99 mm, optimized for standard ISA slots in industrial PCs.
- High-Speed Digital I/O: TTL-level I/O supports fast switching and reliable signal integrity for real-time control.
- Programmable Interrupts: Configurable interrupt sources for event-driven data acquisition and control.
- Industrial Reliability: Designed for continuous operation in industrial environments, with robust PCB design and high-quality components.
- Flexible Software Integration: Compatible with standard programming environments and driver libraries for DOS, Windows, and real-time operating systems (depending on manufacturer support).
3. Technical Specifications
- Bus Interface: PC ISA (Industry Standard Architecture)
- Digital Input Channels: 32 TTL-compatible inputs
- Logic Level: TTL (0–5 V)
- Input High Voltage: ≥ 2.0 V
- Input Low Voltage: ≤ 0.8 V
- Input Current: Typically 1 mA per channel
- Digital Output Channels: 32 TTL-compatible outputs
- Output High Voltage: ≥ 2.4 V @ 2.4 mA
- Output Low Voltage: ≤ 0.4 V @ 8 mA
- Output Drive Capability: Sink/source up to 8 mA per channel
- Counter/Timer Channels: 3 independent channels
- Counter Resolution: 16-bit
- Input Frequency Range: DC to several MHz (depending on configuration)
- Counter Mode: Programmable (event counting, frequency generation, pulse width modulation, etc.)
- Clock Source: Internal or external
- Interrupt Lines: Selectable IRQ 2–7
- Connectors: 2 × 50-pin male headers (IDC type)
- Board Dimensions: 190 mm (L) × 99 mm (H)
- Weight: Approximately 150–200 g (typical for ISA cards of this size)
- Power Requirements:
- +5 V DC from ISA bus
- Typical Power Consumption: < 1.5 W
- Operating Temperature: 0°C to +50°C (industrial environment)
- Storage Temperature: -20°C to +70°C
- Relative Humidity: 5%–95% non-condensing
- Material: Multi-layer FR-4 PCB with gold-plated edge connector
4. Functionality
The AX5220A functions as a combined digital I/O and counter/timer interface for PC-based control systems. It connects directly to the ISA bus, allowing the host CPU to read digital input states, write digital output values, and configure counter/timer operations through memory-mapped or I/O-mapped registers.
Digital I/O Functionality:
- The 32 input channels can monitor external digital signals such as switches, sensors, or logic-level outputs from other devices.
- The 32 output channels can drive LEDs, relays, actuators, or other TTL-compatible devices.
- Each channel can be individually addressed and controlled via software.
Counter/Timer Functionality:
- The three counter/timer channels can be used for event counting, frequency measurement, pulse generation, or time interval measurement.
- Each counter can operate independently or be cascaded for extended counting range.
- The counters can generate interrupts upon overflow or match conditions, enabling precise event-driven control.
Use Cases and Applications:
- Industrial automation and process control
- Machine monitoring and event counting
- Laboratory instrumentation and test systems
- Data acquisition and signal measurement
- Motion control and encoder signal processing
- Real-time digital control in embedded PC systems
Compatibility:
- Compatible with standard PC/AT ISA bus systems
- Works with industrial PCs, embedded controllers, and legacy automation systems
- Software drivers typically available for DOS, Windows, and Linux (depending on manufacturer support)
5. Components & Accessories
Included Items:
- AX5220A ISA card
- User manual or quick start guide
- Driver and utility software (on CD or downloadable)
- Warranty documentation
Optional Accessories:
- 50-pin flat ribbon cables for external connection
- Terminal boards or breakout modules for easy wiring (e.g., Axiom TB-50 or equivalent)
- Mounting brackets or chassis accessories for industrial enclosures
Connectors:
- Two 50-pin male headers (IDC type)
- Connector 1: Digital Input (32 channels) + Counter/Timer inputs
- Connector 2: Digital Output (32 channels) + Counter/Timer outputs
- Pin assignments follow Axiom’s standard I/O mapping for the AX5000 series
6. Installation & Setup
System Requirements:
- PC or industrial computer with available ISA slot
- +5 V DC power supply from system bus
- Operating system supporting ISA I/O access
Installation Steps:
1. Power off the host computer and disconnect it from the power source.
2. Insert the AX5220A card into an available ISA slot, ensuring proper alignment with the bus connector.
3. Secure the card using the chassis screw to prevent vibration or movement.
4. Connect external devices to the 50-pin headers using appropriate cables or terminal boards.
5. Configure the IRQ line (2–7) using onboard jumpers or DIP switches according to system requirements.
6. Power on the system and install the driver software.
7. Verify device recognition and perform functional tests using the provided utilities.
Configuration Options:
- Selectable IRQ lines for interrupt-driven applications
- Software-configurable I/O direction and counter modes
- Optional external clock or trigger input for counter/timer channels
Mounting Options:
- Standard ISA slot mounting within PC chassis
- Compatible with rackmount and industrial PC enclosures
7. Performance & Capabilities
Speed and Throughput:
- High-speed TTL I/O ensures minimal latency for digital control applications.
- Counter/timer channels support input frequencies up to several MHz, depending on configuration and signal quality.
- Interrupt-driven operation allows real-time response to external events.
Capacity:
- 64 total digital I/O channels provide extensive connectivity for sensors, actuators, and control signals.
- Three independent counters enable simultaneous measurement and control tasks.
Efficiency:
- Low power consumption (<1.5 W) minimizes system load.
- Efficient register-based architecture reduces CPU overhead.
Limitations:
- Designed for TTL-level signals only (0–5 V logic); not suitable for direct interfacing with higher-voltage industrial signals without external isolation.
- ISA bus interface limits use to legacy or industrial systems with ISA slots.
- No onboard isolation between channels; external isolation recommended for noisy environments.
8. Standards & Compliance
- Bus Standard: Fully compliant with PC ISA (Industry Standard Architecture) specifications.
- Electrical Standards: TTL logic levels conforming to standard 74LS/74HC logic families.
- EMC Compliance: Designed to meet industrial electromagnetic compatibility requirements (EN 55022/55024 or equivalent).
- Safety Compliance: Manufactured according to CE and RoHS directives (lead-free, environmentally compliant).
- Quality Assurance: Each unit tested for functionality and signal integrity before shipment.
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1–2 years) covering defects in materials and workmanship.
Technical Support:
- Axiom provides technical documentation, driver updates, and application notes.
- Support available via email, online knowledge base, and authorized distributors.
Maintenance:
- No routine maintenance required beyond standard dust removal and connector inspection.
- Recommended to periodically verify cable connections and signal integrity in high-vibration environments.
Software & Firmware Updates:
- Driver and utility software updates available from Axiom’s official website.
- Firmware updates (if applicable) can be applied via software utility.
Service & Replacement:
- Replacement parts and accessories available through Axiom’s authorized service centers.
- End-of-life support and product migration guidance provided for long-term industrial users.
### Summary
The Axiom AX5220A 3 Counter/Timer and 32/32 TTL DIO PC ISA Card is a robust, high-precision digital I/O and timing interface designed for industrial and laboratory applications requiring reliable, high-speed digital control. With three programmable counter/timer channels, 64 TTL-level I/O lines, and ISA bus compatibility, it provides a versatile platform for event counting, pulse generation, and digital signal interfacing. Its dual 50-pin connectors, configurable interrupts, and compact 190 × 99 mm form factor make it an ideal choice for engineers integrating legacy ISA-based systems or maintaining long-term industrial installations. Built to Axiom’s quality standards, the AX5220A delivers dependable performance, flexible configuration, and long-term support for demanding automation and measurement environments.
Product Name: 3 Counter/Timer and 32/32 TTL DIO PC ISA Card
Model: AX5220A
Series: AX5000 Series (Industrial I/O Interface Cards)
Article Number: AX5220A
Manufacturer: Axiom
The Axiom AX5220A is a high-performance industrial-grade PC ISA interface card designed to provide precise timing, counting, and digital input/output (DIO) control for automation, measurement, and data acquisition systems. It integrates three programmable counter/timer channels and 64 channels of TTL-level digital I/O (32 inputs and 32 outputs) on a single board, offering a compact and efficient solution for real-time control and monitoring applications. The card is engineered for compatibility with legacy ISA bus architectures, making it ideal for industrial PCs, embedded systems, and laboratory instrumentation setups that require reliable digital interfacing and timing control.
2. Key Features
- Triple Counter/Timer Channels: Three independent 16-bit counter/timer modules for event counting, frequency measurement, pulse generation, and timing control.
- 64-Channel TTL Digital I/O: Provides 32 TTL-compatible digital input channels and 32 TTL-compatible digital output channels for flexible signal interfacing.
- ISA Bus Interface: Fully compatible with standard PC ISA bus architecture, supporting IRQ lines 2–7 for interrupt-driven operations.
- Dual 50-Pin Connectors: Two high-density 50-pin headers provide easy access to all I/O lines, simplifying cable management and external device connections.
- Compact Form Factor: Board dimensions of 190 mm × 99 mm, optimized for standard ISA slots in industrial PCs.
- High-Speed Digital I/O: TTL-level I/O supports fast switching and reliable signal integrity for real-time control.
- Programmable Interrupts: Configurable interrupt sources for event-driven data acquisition and control.
- Industrial Reliability: Designed for continuous operation in industrial environments, with robust PCB design and high-quality components.
- Flexible Software Integration: Compatible with standard programming environments and driver libraries for DOS, Windows, and real-time operating systems (depending on manufacturer support).
3. Technical Specifications
- Bus Interface: PC ISA (Industry Standard Architecture)
- Digital Input Channels: 32 TTL-compatible inputs
- Logic Level: TTL (0–5 V)
- Input High Voltage: ≥ 2.0 V
- Input Low Voltage: ≤ 0.8 V
- Input Current: Typically 1 mA per channel
- Digital Output Channels: 32 TTL-compatible outputs
- Output High Voltage: ≥ 2.4 V @ 2.4 mA
- Output Low Voltage: ≤ 0.4 V @ 8 mA
- Output Drive Capability: Sink/source up to 8 mA per channel
- Counter/Timer Channels: 3 independent channels
- Counter Resolution: 16-bit
- Input Frequency Range: DC to several MHz (depending on configuration)
- Counter Mode: Programmable (event counting, frequency generation, pulse width modulation, etc.)
- Clock Source: Internal or external
- Interrupt Lines: Selectable IRQ 2–7
- Connectors: 2 × 50-pin male headers (IDC type)
- Board Dimensions: 190 mm (L) × 99 mm (H)
- Weight: Approximately 150–200 g (typical for ISA cards of this size)
- Power Requirements:
- +5 V DC from ISA bus
- Typical Power Consumption: < 1.5 W
- Operating Temperature: 0°C to +50°C (industrial environment)
- Storage Temperature: -20°C to +70°C
- Relative Humidity: 5%–95% non-condensing
- Material: Multi-layer FR-4 PCB with gold-plated edge connector
4. Functionality
The AX5220A functions as a combined digital I/O and counter/timer interface for PC-based control systems. It connects directly to the ISA bus, allowing the host CPU to read digital input states, write digital output values, and configure counter/timer operations through memory-mapped or I/O-mapped registers.
Digital I/O Functionality:
- The 32 input channels can monitor external digital signals such as switches, sensors, or logic-level outputs from other devices.
- The 32 output channels can drive LEDs, relays, actuators, or other TTL-compatible devices.
- Each channel can be individually addressed and controlled via software.
Counter/Timer Functionality:
- The three counter/timer channels can be used for event counting, frequency measurement, pulse generation, or time interval measurement.
- Each counter can operate independently or be cascaded for extended counting range.
- The counters can generate interrupts upon overflow or match conditions, enabling precise event-driven control.
Use Cases and Applications:
- Industrial automation and process control
- Machine monitoring and event counting
- Laboratory instrumentation and test systems
- Data acquisition and signal measurement
- Motion control and encoder signal processing
- Real-time digital control in embedded PC systems
Compatibility:
- Compatible with standard PC/AT ISA bus systems
- Works with industrial PCs, embedded controllers, and legacy automation systems
- Software drivers typically available for DOS, Windows, and Linux (depending on manufacturer support)
5. Components & Accessories
Included Items:
- AX5220A ISA card
- User manual or quick start guide
- Driver and utility software (on CD or downloadable)
- Warranty documentation
Optional Accessories:
- 50-pin flat ribbon cables for external connection
- Terminal boards or breakout modules for easy wiring (e.g., Axiom TB-50 or equivalent)
- Mounting brackets or chassis accessories for industrial enclosures
Connectors:
- Two 50-pin male headers (IDC type)
- Connector 1: Digital Input (32 channels) + Counter/Timer inputs
- Connector 2: Digital Output (32 channels) + Counter/Timer outputs
- Pin assignments follow Axiom’s standard I/O mapping for the AX5000 series
6. Installation & Setup
System Requirements:
- PC or industrial computer with available ISA slot
- +5 V DC power supply from system bus
- Operating system supporting ISA I/O access
Installation Steps:
1. Power off the host computer and disconnect it from the power source.
2. Insert the AX5220A card into an available ISA slot, ensuring proper alignment with the bus connector.
3. Secure the card using the chassis screw to prevent vibration or movement.
4. Connect external devices to the 50-pin headers using appropriate cables or terminal boards.
5. Configure the IRQ line (2–7) using onboard jumpers or DIP switches according to system requirements.
6. Power on the system and install the driver software.
7. Verify device recognition and perform functional tests using the provided utilities.
Configuration Options:
- Selectable IRQ lines for interrupt-driven applications
- Software-configurable I/O direction and counter modes
- Optional external clock or trigger input for counter/timer channels
Mounting Options:
- Standard ISA slot mounting within PC chassis
- Compatible with rackmount and industrial PC enclosures
7. Performance & Capabilities
Speed and Throughput:
- High-speed TTL I/O ensures minimal latency for digital control applications.
- Counter/timer channels support input frequencies up to several MHz, depending on configuration and signal quality.
- Interrupt-driven operation allows real-time response to external events.
Capacity:
- 64 total digital I/O channels provide extensive connectivity for sensors, actuators, and control signals.
- Three independent counters enable simultaneous measurement and control tasks.
Efficiency:
- Low power consumption (<1.5 W) minimizes system load.
- Efficient register-based architecture reduces CPU overhead.
Limitations:
- Designed for TTL-level signals only (0–5 V logic); not suitable for direct interfacing with higher-voltage industrial signals without external isolation.
- ISA bus interface limits use to legacy or industrial systems with ISA slots.
- No onboard isolation between channels; external isolation recommended for noisy environments.
8. Standards & Compliance
- Bus Standard: Fully compliant with PC ISA (Industry Standard Architecture) specifications.
- Electrical Standards: TTL logic levels conforming to standard 74LS/74HC logic families.
- EMC Compliance: Designed to meet industrial electromagnetic compatibility requirements (EN 55022/55024 or equivalent).
- Safety Compliance: Manufactured according to CE and RoHS directives (lead-free, environmentally compliant).
- Quality Assurance: Each unit tested for functionality and signal integrity before shipment.
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1–2 years) covering defects in materials and workmanship.
Technical Support:
- Axiom provides technical documentation, driver updates, and application notes.
- Support available via email, online knowledge base, and authorized distributors.
Maintenance:
- No routine maintenance required beyond standard dust removal and connector inspection.
- Recommended to periodically verify cable connections and signal integrity in high-vibration environments.
Software & Firmware Updates:
- Driver and utility software updates available from Axiom’s official website.
- Firmware updates (if applicable) can be applied via software utility.
Service & Replacement:
- Replacement parts and accessories available through Axiom’s authorized service centers.
- End-of-life support and product migration guidance provided for long-term industrial users.
### Summary
The Axiom AX5220A 3 Counter/Timer and 32/32 TTL DIO PC ISA Card is a robust, high-precision digital I/O and timing interface designed for industrial and laboratory applications requiring reliable, high-speed digital control. With three programmable counter/timer channels, 64 TTL-level I/O lines, and ISA bus compatibility, it provides a versatile platform for event counting, pulse generation, and digital signal interfacing. Its dual 50-pin connectors, configurable interrupts, and compact 190 × 99 mm form factor make it an ideal choice for engineers integrating legacy ISA-based systems or maintaining long-term industrial installations. Built to Axiom’s quality standards, the AX5220A delivers dependable performance, flexible configuration, and long-term support for demanding automation and measurement environments.
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