1. Product Overview
Product Name: SCSI-VHDCI Flat 68-Pin Male-to-Male Round Cable
Model Number: ACL-10568NF-2
Article Number: ACL-10568NF-2
Series: PCI-744x Series Accessory
Manufacturer: ADLINK Technology Inc.

The ADLINK ACL-10568NF-2 is a high-performance SCSI-VHDCI (Very High Density Cable Interconnect) flat 68-pin male-to-male round cable designed specifically for use with ADLINK’s PCI-744x series data acquisition and control cards. This cable provides a reliable, shielded, and high-speed data connection between the PCI-744x interface card and external SCSI-compatible devices or terminal boards. Engineered for industrial and laboratory environments, the ACL-10568NF-2 ensures signal integrity, mechanical durability, and compatibility with standard SCSI-II and VHDCI interfaces.

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2. Key Features
- High-Density 68-Pin VHDCI Interface: Equipped with one 68-pin VHDCI male connector and one 68-pin SCSI-II male connector, ensuring compatibility with a wide range of SCSI-based data acquisition and control hardware.
- Optimized for PCI-744x Series: Specifically designed for ADLINK’s PCI-744x digital I/O and motion control cards, providing a direct and reliable connection to external devices or breakout modules.
- 2-Meter Cable Length: Offers a balanced combination of flexibility and reach, suitable for rack-mounted or benchtop setups where moderate cable length is required.
- Round Cable Design: The round cable structure enhances flexibility and reduces space requirements compared to flat ribbon cables, while maintaining excellent shielding and signal integrity.
- Flat VHDCI Connector Profile: The flat connector design allows for secure and compact connections in dense system configurations.
- High-Speed Data Transmission: Supports the full bandwidth of SCSI-II and VHDCI interfaces, ensuring low-latency and high-throughput data transfer.
- Durable Construction: Built with industrial-grade materials for long-term reliability, featuring robust strain relief and high-quality shielding to minimize electromagnetic interference (EMI).
- Plug-and-Play Compatibility: No additional configuration required; the cable is ready for immediate use with compatible ADLINK hardware.
- Universal SCSI-II Compatibility: Can interface with other SCSI-II compliant devices, making it versatile for various industrial and laboratory applications.

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3. Technical Specifications
- Model: ACL-10568NF-2
- Cable Type: SCSI-VHDCI 68-pin male-to-male round cable
- Connector 1: 68-pin VHDCI (Very High Density Cable Interconnect) male
- Connector 2: 68-pin SCSI-II male
- Pin Count: 68 pins per connector
- Cable Length: 2 meters (approx. 6.56 feet)
- Cable Shape: Round
- Cable Color: Black
- Conductor Type: Twisted-pair shielded conductors for signal integrity
- Shielding: Full EMI/RFI shielding with braided and foil layers
- Jacket Material: Industrial-grade PVC or equivalent thermoplastic insulation
- Operating Temperature Range: Typically 0°C to 60°C (dependent on installation environment)
- Storage Temperature Range: -20°C to 80°C
- Connector Material: Nickel-plated contacts with molded strain relief
- Impedance: 100 ohms nominal (typical for SCSI-II differential signaling)
- Signal Type: Differential or single-ended SCSI-II signaling
- Compliance Interface: VHDCI (Very High Density Cable Interconnect) standard per ANSI X3.131-1994 (SCSI-2)
- Weight: Approx. 0.25–0.35 kg (depending on cable jacket thickness)

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4. Functionality
The ACL-10568NF-2 functions as a high-speed data transmission cable connecting ADLINK PCI-744x series cards to external devices such as terminal boards, motion controllers, or other SCSI-compatible modules. The cable’s VHDCI and SCSI-II connectors ensure secure, low-resistance electrical contact, enabling reliable communication between the host PC and peripheral equipment.

Use Cases and Applications:
- Industrial Automation: Connecting motion control cards to servo or stepper motor drivers.
- Data Acquisition Systems: Linking PCI-744x DAQ cards to external signal conditioning modules.
- Laboratory Instrumentation: Providing high-speed data transfer between test instruments and control PCs.
- Embedded Systems: Integrating with custom-built control panels or breakout boxes.
- Production Testing: Used in automated test equipment (ATE) setups for signal routing and control.

Compatibility:
- Fully compatible with ADLINK PCI-744x series cards (e.g., PCI-7442, PCI-7443, PCI-7444).
- Supports standard SCSI-II and VHDCI interfaces, allowing interoperability with third-party devices that adhere to the same pinout and signaling standards.
- Backward compatible with legacy SCSI-II devices using appropriate adapters.

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5. Components & Accessories
Included Items:
- 1 × ACL-10568NF-2 SCSI-VHDCI 68-pin male-to-male round cable (2 meters)

Optional Accessories (sold separately):
- ADLINK terminal boards or breakout modules (e.g., DIN-68S, DIN-68D) for signal distribution.
- VHDCI-to-SCSI adapter modules for interfacing with non-standard connectors.
- Cable management accessories such as clips or strain relief brackets for secure installation.

Connectors:
- Connector A: VHDCI 68-pin male (high-density, compact form factor)
- Connector B: SCSI-II 68-pin male (standard half-pitch connector)
- Both connectors feature molded housings with integrated strain relief to prevent cable fatigue and ensure long-term durability.

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6. Installation & Setup
Requirements:
- Compatible ADLINK PCI-744x series card or equivalent SCSI-II/VHDCI interface device.
- Available SCSI-II or VHDCI port on the target device.
- Adequate space for cable routing and connector clearance.

Mounting Options:
- The cable can be routed through standard cable trays, harnesses, or rack enclosures.
- The round cable design allows flexible bending and routing in confined spaces.

Configuration:
- No software configuration required; the cable functions as a passive interconnect.
- Ensure proper orientation of connectors before insertion to avoid pin damage.
- Secure both ends using the connector latching mechanisms to maintain stable connections during operation.

Installation Steps:
1. Power off all connected devices before installation.
2. Connect the VHDCI male end to the PCI-744x card’s VHDCI port.
3. Connect the SCSI-II male end to the corresponding external device or terminal board.
4. Verify that both connectors are fully seated and latched.
5. Power on the system and confirm device recognition through the host software or operating system.

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7. Performance & Capabilities
- Data Transfer Rate: Supports SCSI-II data rates up to 40 MB/s (Fast SCSI) depending on system configuration.
- Signal Integrity: Twisted-pair and shielded construction minimizes crosstalk and electromagnetic interference.
- Transmission Distance: Optimized for 2-meter length to maintain signal quality and timing integrity in high-speed applications.
- Mechanical Durability: Rated for thousands of insertion/removal cycles under normal operating conditions.
- Electrical Performance: Maintains consistent impedance and low signal attenuation across the full cable length.
- Environmental Resistance: Designed to operate reliably in typical industrial and laboratory environments with moderate temperature and humidity levels.
- Limitations: Not intended for outdoor or high-vibration environments without additional protection; maximum cable length should not exceed SCSI-II specifications to prevent signal degradation.

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8. Standards & Compliance
- Interface Standards:
- ANSI X3.131-1994 (SCSI-2)
- VHDCI (Very High Density Cable Interconnect) standard per ANSI/EIA-364
- Electrical Compliance:
- Differential and single-ended SCSI signaling compatible
- Impedance and crosstalk performance per SCSI-II electrical specifications
- Safety & Environmental Compliance:
- RoHS (Restriction of Hazardous Substances) compliant
- REACH compliant materials
- Halogen-free insulation (depending on production batch)
- Quality Assurance:
- Manufactured under ISO 9001:2015 certified quality management system
- 100% continuity and insulation resistance tested before shipment
- Industry Compatibility:
- Suitable for use in industrial automation, laboratory instrumentation, and embedded control systems adhering to SCSI-II/VHDCI standards.

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9. Additional Information
Warranty:
- Standard ADLINK limited warranty (typically 1 year) covering manufacturing defects and workmanship.

Support:
- Technical documentation, pinout diagrams, and compatibility lists available from ADLINK’s official support portal.
- Customer service and RMA support provided through ADLINK regional offices and authorized distributors.

Maintenance:
- Periodically inspect connectors for dust or debris; clean with compressed air or contact cleaner if necessary.
- Avoid excessive bending or twisting of the cable to maintain internal conductor integrity.
- Store in a dry, temperature-controlled environment when not in use.

Updates & Revisions:
- The ACL-10568NF-2 may be subject to minor revisions to improve performance or compliance with updated standards.
- Users should verify the latest product revision and documentation from ADLINK before integration into new systems.

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Summary
The ADLINK ACL-10568NF-2 is a robust, high-quality SCSI-VHDCI 68-pin male-to-male round cable engineered for PCI-744x series data acquisition and control cards. With a 2-meter length, industrial-grade shielding, and precise connector design, it ensures reliable high-speed data transmission in demanding environments. Its VHDCI-to-SCSI-II configuration provides broad compatibility across industrial, laboratory, and embedded applications. Fully compliant with SCSI-II and VHDCI standards, the ACL-10568NF-2 delivers consistent performance, mechanical durability, and ease of integration—making it an essential connectivity solution for ADLINK’s motion control and I/O systems.