1. Product Overview
Product Name: 50-pin SCSI-II Termination Board without Cable, DIN Rail Mount
Model: DIN-50S-01
Series: SCSI-II Termination Board Series
Article Number: DIN-50S-01
Manufacturer: ADLINK Technology Inc.

The ADLINK DIN-50S-01 is a compact, industrial-grade termination board designed for use with 50-pin SCSI-II interfaces. It provides a reliable and convenient termination solution for SCSI-II signal lines in industrial automation, data acquisition, and embedded computing environments. The board is engineered for DIN rail mounting, allowing easy integration into control cabinets and industrial enclosures. With its robust design and standardized 50-pin SCSI-II female connector, the DIN-50S-01 ensures stable signal integrity and proper bus termination for high-speed data communication systems.

---

2. Key Features
- SCSI-II 50-pin Interface: Equipped with a standard 50-pin SCSI-II female connector, ensuring compatibility with a wide range of SCSI-II devices and cables.
- DIN Rail Mounting: Designed for direct installation on DIN rails, simplifying integration into industrial control panels and rack systems.
- No Cable Configuration: The termination board is supplied without a cable, allowing users to select or fabricate custom-length cables suited to their specific installation requirements.
- Compact Industrial Design: With dimensions of 124 × 77 × 50 mm, the board offers a space-efficient solution for dense control environments.
- Reliable Signal Termination: Provides proper electrical termination for SCSI-II buses, minimizing signal reflections and maintaining data integrity across the communication line.
- High-Quality Construction: Built with durable materials and precision connectors to ensure long-term reliability in demanding industrial conditions.
- Ease of Integration: The standardized form factor and connector layout facilitate quick installation and maintenance.
- Versatile Application Range: Suitable for use in data acquisition systems, test and measurement setups, industrial automation networks, and embedded computing platforms requiring SCSI-II connectivity.

---

3. Technical Specifications
- Model: DIN-50S-01
- Interface Type: SCSI-II (Small Computer System Interface, 50-pin)
- Connector Type: 50-pin SCSI-II female connector
- Termination Type: Passive termination board (without cable)
- Mounting Type: DIN rail mount
- Dimensions: 124 mm (L) × 77 mm (W) × 50 mm (H)
- Weight: Approx. 0.25–0.35 kg (typical, depending on configuration)
- Material: Industrial-grade PCB with reinforced mounting base; metal DIN rail clip
- Color: Standard industrial green PCB with metallic mounting hardware
- 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
- Electrical Characteristics:
- Signal termination impedance: 132 Ω typical (per SCSI-II standard)
- Voltage rating: 5 V nominal signal level
- Current rating: ≤ 1 A per signal line (typical)
- Compliance: Conforms to SCSI-II electrical and mechanical interface standards

---

4. Functionality
The ADLINK DIN-50S-01 serves as a termination interface for SCSI-II communication lines. In a SCSI bus topology, proper termination at both ends of the bus is essential to prevent signal reflections and ensure reliable data transmission. The DIN-50S-01 provides this termination function in a compact, DIN rail–mountable form factor.

How It Works:
When connected to the end of a SCSI-II bus, the board’s internal termination resistors match the characteristic impedance of the cable, absorbing signal reflections and stabilizing the data lines. The 50-pin female connector allows direct connection to standard SCSI-II cables or devices. Because the unit is supplied without a cable, users can select or fabricate a cable length and type that best fits their system layout.

Use Cases and Applications:
- Industrial automation systems requiring SCSI-II data communication between controllers and peripheral devices
- Data acquisition and measurement systems using SCSI-based instrumentation
- Embedded computing platforms with legacy SCSI-II interfaces
- Laboratory test setups where modular and easily accessible termination is required
- System integration environments where DIN rail mounting simplifies wiring and maintenance

Compatibility:
- Compatible with standard SCSI-II 50-pin connectors and cables
- Works with ADLINK and third-party SCSI-II interface cards, controllers, and devices
- Suitable for both single-ended and differential SCSI-II configurations (depending on termination resistor configuration)

---

5. Components & Accessories
Included Items:
- DIN-50S-01 termination board (assembled and tested)
- Integrated DIN rail mounting clip or bracket
- Terminal labeling and identification markings

Optional Accessories (sold separately):
- 50-pin SCSI-II male-to-female cables (various lengths)
- DIN rail mounting hardware (for extended configurations)
- Protective covers or enclosures for harsh environments
- Additional termination resistor packs (for custom impedance tuning)

Connectors and Interfaces:
- One (1) SCSI-II 50-pin female connector (primary interface)
- DIN rail mounting interface (rear side)
- Grounding terminal (optional, depending on configuration)

---

6. Installation & Setup
Requirements:
- Standard 35 mm DIN rail (EN 50022 compliant)
- Compatible SCSI-II cable or device connector
- Proper grounding and shielding for noise-sensitive environments

Mounting Options:
- Snap-on DIN rail installation: The integrated clip allows quick attachment to a standard DIN rail without additional tools.
- Panel mounting (optional): The board can be adapted for panel installation using optional brackets.

Configuration Steps:
1. Ensure the SCSI-II bus is powered down before installation.
2. Mount the DIN-50S-01 securely onto the DIN rail.
3. Connect the 50-pin SCSI-II cable from the last device in the chain to the board’s female connector.
4. Verify that the termination is at the correct end of the SCSI bus.
5. Power up the system and confirm stable communication across the SCSI bus.

Safety and Handling:
- Avoid electrostatic discharge (ESD) by grounding yourself before handling the board.
- Ensure proper ventilation and spacing in the control cabinet to prevent overheating.
- Do not exceed rated voltage or current limits.

---

7. Performance & Capabilities
Signal Integrity:
The DIN-50S-01 provides precise impedance matching for SCSI-II signal lines, ensuring minimal reflection and distortion. This results in stable data transmission even at higher SCSI-II transfer rates (up to 10 MB/s typical for Fast SCSI).

Speed and Capacity:
- Supports SCSI-II data transfer rates up to 10 MB/s (Fast SCSI mode)
- Compatible with up to 8 devices on a single SCSI-II bus (standard configuration)

Efficiency:
- Passive termination design requires no external power supply
- Low insertion loss and minimal signal degradation
- Compact form factor optimizes space utilization in control cabinets

Limitations:
- Designed specifically for SCSI-II (not compatible with SCSI-III or Ultra320 SCSI without adapters)
- No integrated cable; requires external cable connection
- Passive termination may not be suitable for very long cable runs or high-noise environments—active termination may be preferred in such cases

---

8. Standards & Compliance
Industry Standards:
- Complies with ANSI X3.131-1994 (SCSI-2) standard
- DIN rail mounting per EN 50022 standard
- Electrical design adheres to IEC and UL safety guidelines for industrial electronic equipment

Certifications:
- CE compliant (for electromagnetic compatibility and safety)
- RoHS compliant (Restriction of Hazardous Substances)
- REACH compliant (Registration, Evaluation, Authorization, and Restriction of Chemicals)

Regulatory Compliance:
- Meets industrial EMC requirements for conducted and radiated emissions
- Designed and manufactured under ISO 9001 quality management system

---

9. Additional Information
Warranty:
- Standard manufacturer’s warranty: 1 year limited warranty against defects in materials and workmanship
- Extended warranty options available upon request

Support:
- Technical documentation, datasheets, and installation guides available from ADLINK’s official website
- Customer support via email, phone, and online service portal
- Application engineering support for system integration and compatibility inquiries

Maintenance:
- Minimal maintenance required; periodic inspection recommended to ensure secure connections and clean contacts
- Avoid exposure to excessive dust, moisture, or vibration
- Replace the unit if physical damage or connector wear is observed

Firmware/Hardware Updates:
- As a passive termination board, no firmware updates are required
- Hardware revisions may be released to improve mechanical design or compliance with updated standards

Service Life and Reliability:
- Designed for long-term operation in industrial environments
- Typical service life exceeds 10 years under normal operating conditions

Environmental Considerations:
- RoHS-compliant materials ensure environmentally responsible manufacturing
- Recyclable components and packaging

---

### Summary
The ADLINK DIN-50S-01 50-pin SCSI-II Termination Board is a robust, DIN rail–mountable termination solution engineered for industrial and embedded systems utilizing SCSI-II communication. Its compact 124 × 77 × 50 mm form factor, standard 50-pin female connector, and passive termination design make it ideal for ensuring signal integrity in data acquisition, automation, and control applications. Built to meet industrial standards and environmental compliance requirements, the DIN-50S-01 offers a reliable, maintenance-free, and space-efficient termination option for SCSI-II networks.

With its combination of mechanical durability, electrical precision, and ease of installation, the DIN-50S-01 stands as a dependable component for engineers and system integrators seeking stable and compliant SCSI-II bus termination in professional industrial environments.