1. Product Overview
Product Name: 68-pin SCSI-II Termination Board with DIN Rail
Model: DIN-68S/1S
Series: SCSI-II Termination / PCI-7256 Accessory Series
Article Number: DIN-68S/1S
Manufacturer: ADLINK Technology Inc.

The ADLINK DIN-68S/1S is a high-quality 68-pin SCSI-II termination board designed for industrial and laboratory environments requiring reliable signal integrity and robust connectivity for SCSI-based data acquisition and control systems. Specifically engineered as an accessory for the ADLINK PCI-7256 digital I/O card, this termination board provides a convenient DIN rail mounting solution, ensuring secure installation within control cabinets or industrial enclosures. The product includes a 1-meter shielded SCSI-II cable (model ACL-10569-1) for immediate integration with compatible ADLINK hardware.

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2. Key Features
- 68-pin SCSI-II Interface: Provides a standard high-density 68-pin connector for seamless connection to SCSI-II compatible devices and ADLINK PCI-7256 cards.
- DIN Rail Mounting: Integrated DIN rail bracket allows quick and secure installation in industrial control panels, reducing wiring complexity and improving accessibility.
- Integrated Termination: Ensures proper signal termination for SCSI-II communication lines, minimizing signal reflection and maintaining data integrity across high-speed digital channels.
- Included Cable (ACL-10569-1): Supplied with a 1-meter shielded SCSI-II cable for immediate deployment, ensuring optimal signal transmission and EMI protection.
- Compact Industrial Design: With dimensions of 124 mm (L) × 77 mm (W) × 50 mm (H), the board fits efficiently into confined spaces while maintaining robust mechanical stability.
- Compatibility with ADLINK PCI-7256: Designed specifically for use with the PCI-7256 68-channel isolated digital I/O card, ensuring full electrical and mechanical compatibility.
- High Signal Integrity: Precision termination resistors and controlled impedance traces maintain consistent signal quality across all 68 channels.
- Durable Construction: Built with industrial-grade materials to withstand vibration, temperature variations, and long-term operational stress.

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3. Technical Specifications
- Model: DIN-68S/1S
- Article Number: DIN-68S/1S
- Manufacturer: ADLINK Technology Inc.
- Interface Type: 68-pin SCSI-II (High-Density Female Connector)
- Supported Device: ADLINK PCI-7256 Digital I/O Card
- Cable Included: ACL-10569-1, 1-meter shielded SCSI-II cable
- Termination Type: Passive SCSI-II termination network
- Mounting Type: DIN rail (standard 35 mm rail compatible)
- Dimensions: 124 mm (Length) × 77 mm (Width) × 50 mm (Height)
- Weight: Approx. 200–250 g (typical, including DIN rail bracket)
- Material: Industrial-grade PCB with protective coating; aluminum or steel DIN rail bracket
- Operating Temperature Range: 0°C to +55°C (typical industrial environment)
- Storage Temperature Range: -20°C to +70°C
- Relative Humidity: 10% to 90% non-condensing
- Connector Type: 68-pin high-density SCSI-II female connector (VHDCI type)
- Electrical Characteristics:
- Signal termination resistors: 110 Ω typical
- Maximum signal voltage: 5 V TTL compatible
- Grounding: Common ground plane with shielded cable support
- Color: Green PCB with metallic DIN rail bracket
- Compliance: RoHS compliant

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4. Functionality
The DIN-68S/1S serves as a termination and breakout interface for 68-pin SCSI-II connections, primarily used in conjunction with ADLINK’s PCI-7256 digital I/O card. It provides a stable electrical termination point for high-speed digital signals, ensuring that reflections and signal degradation are minimized in long cable runs or complex wiring configurations.

How It Works:
When connected to the PCI-7256 card via the included ACL-10569-1 cable, the DIN-68S/1S board terminates the SCSI-II bus lines using precision resistors. This termination maintains impedance matching across the communication channel, preventing data errors and ensuring reliable digital signal transmission. The board’s DIN rail mounting allows it to be positioned close to field wiring or control devices, simplifying cable routing and reducing electromagnetic interference.

Use Cases and Applications:
- Industrial automation systems requiring high-channel-count digital I/O connectivity
- Data acquisition and control systems using ADLINK PCI-7256 cards
- Laboratory test benches and measurement setups
- Machine control and monitoring systems
- Signal conditioning and distribution in industrial enclosures
- Integration with PLCs, sensors, and actuators via SCSI-II interface

Compatibility:
- Fully compatible with ADLINK PCI-7256 and other ADLINK cards using a 68-pin SCSI-II interface
- Supports standard SCSI-II cabling and termination practices
- Can be used with other 68-pin digital I/O boards requiring external termination

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5. Components & Accessories
Included Items:
- DIN-68S/1S termination board
- 1-meter SCSI-II cable (model ACL-10569-1)
- Pre-installed DIN rail mounting bracket
- Quick installation guide or datasheet (depending on packaging)

Optional Accessories:
- Additional SCSI-II cables (various lengths available from ADLINK)
- Replacement DIN rail clips or brackets
- Panel-mount adapters for fixed installations
- Protective covers or enclosures for harsh environments

Connectors:
- One 68-pin high-density SCSI-II female connector for host connection
- Screw terminal or pin header interface (depending on configuration) for field wiring (if applicable)
- Grounding terminal for chassis or cabinet grounding

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6. Installation & Setup
Requirements:
- Compatible ADLINK PCI-7256 card or equivalent 68-pin SCSI-II interface device
- Standard 35 mm DIN rail for mounting
- Appropriate power and grounding infrastructure within the control cabinet

Mounting Options:
- Snap-on DIN rail installation using integrated spring-loaded clip
- Optional screw mounting through bracket holes for permanent installations

Configuration Steps:
1. Mount the DIN-68S/1S securely onto the DIN rail.
2. Connect the included ACL-10569-1 cable between the PCI-7256 card and the DIN-68S/1S board.
3. Ensure proper grounding between the board and the control cabinet.
4. Verify that the termination resistors are correctly installed (factory default configuration).
5. Power on the system and confirm signal integrity through the host software or diagnostic tools.

Safety Considerations:
- Always disconnect power before connecting or disconnecting cables.
- Avoid excessive bending or twisting of the SCSI-II cable.
- Ensure proper grounding to prevent electrostatic discharge (ESD) damage.

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7. Performance & Capabilities
Signal Integrity:
The DIN-68S/1S provides high-quality signal termination for up to 68 digital channels, maintaining consistent impedance and minimizing crosstalk. The termination network ensures stable operation even in high-speed or long-distance cable configurations.

Speed and Capacity:
- Supports full SCSI-II data rates (up to 40 MB/s nominal)
- Handles 68 independent signal lines for digital I/O applications
- Compatible with TTL-level digital signals (0–5 V)

Efficiency and Reliability:
- Passive termination design requires no external power
- Low insertion loss and minimal signal distortion
- Industrial-grade components ensure long operational life and stable performance

Limitations:
- Designed specifically for SCSI-II (not compatible with SCSI-III or Ultra320 interfaces)
- Intended for use with ADLINK PCI-7256; compatibility with third-party devices may vary
- Not suitable for analog signal transmission or high-voltage applications

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8. Standards & Compliance
Certifications:
- RoHS (Restriction of Hazardous Substances) compliant
- CE marking (for electromagnetic compatibility and safety, depending on region)
- Manufactured under ISO 9001:2015 quality management standards

Regulatory Compliance:
- Meets industrial EMC requirements for control cabinet installations
- Conforms to SCSI-II electrical and mechanical interface specifications
- Designed in accordance with IEC 60297 (mechanical structure for electronic equipment)

Industry Standards:
- SCSI-II (Small Computer System Interface, ANSI X3.131-1994)
- DIN rail mounting standard (EN 60715, 35 mm top-hat rail)
- Electrical safety and grounding per IEC 61010-1 (for measurement and control equipment)

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9. Additional Information
Warranty:
- Standard ADLINK limited warranty (typically 1–2 years, depending on region and distributor)
- Covers manufacturing defects and component failures under normal operating conditions

Support:
- Full technical documentation available from ADLINK’s official website
- Access to driver updates, installation guides, and compatibility lists
- Dedicated technical support via email and online service portal

Maintenance:
- Minimal maintenance required; periodic inspection recommended for cable integrity and connector cleanliness
- Clean with dry, lint-free cloth; avoid solvents or moisture exposure
- Verify termination resistors periodically in high-vibration environments

Updates and Revisions:
- Product revisions may include updated termination networks or improved mechanical design
- Firmware or driver updates (if applicable to host card) available through ADLINK support channels

Environmental Considerations:
- Designed for industrial environments with moderate temperature and humidity
- Compliant with environmental directives for lead-free and halogen-free manufacturing

Packaging:
- Anti-static protective packaging
- Includes identification label with model number, serial number, and manufacturing date

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Summary
The ADLINK DIN-68S/1S is a robust, industrial-grade 68-pin SCSI-II termination board engineered for seamless integration with the ADLINK PCI-7256 digital I/O card. Featuring DIN rail mounting, passive termination, and an included 1-meter SCSI-II cable (ACL-10569-1), it provides a complete, ready-to-install solution for industrial automation, data acquisition, and control applications. With its compact 124 × 77 × 50 mm form factor, durable construction, and compliance with SCSI-II and DIN rail standards, the DIN-68S/1S ensures reliable signal integrity, simplified installation, and long-term operational stability in demanding environments.

This accessory exemplifies ADLINK’s commitment to providing high-performance, reliable connectivity solutions for industrial computing and measurement systems.