Comprehensive Product Summary – ACL-10253-1 SCSI-II Cable Assembly

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### 1. Product Overview

Product Name: 2×50-pin SCSI-II to 100-pin SCSI-II Cable
Model Number: ACL-10253-1
Article Number: ACL-10253-1
Series: ACL SCSI-II Cable Series
Manufacturer: ADLINK Technology Inc.
Associated Products: PCI-7348, PCI-7396, DIN-24P/R terminal boards
Alternate Reference: ACL-10252 (SCSC-100 to two SCSI-50 Cable)

The ADLINK ACL-10253-1 is a high-performance, industrial-grade SCSI-II cable designed to interface ADLINK’s PCI-7348 and PCI-7396 digital I/O cards with external terminal boards such as the DIN-24P/R. It provides a reliable, shielded connection between a 100-pin SCSI-II connector and two 50-pin SCSI-II connectors, ensuring signal integrity and compatibility with high-density digital I/O applications. The cable is 1 meter in length and features robust male-to-male connectors for secure attachment in industrial and laboratory environments.

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### 2. Key Features

- Dual 50-pin to Single 100-pin Configuration:
Connects two 50-pin SCSI-II interfaces to a single 100-pin SCSI-II port, enabling flexible interfacing between multi-channel digital I/O devices and peripheral boards.

- High-Density SCSI-II Connectors:
Equipped with precision-molded 50-pin and 100-pin male SCSI-II connectors, ensuring tight mechanical fit and reliable electrical contact.

- Optimized for ADLINK PCI-7348/PCI-7396 Cards:
Specifically designed for use with ADLINK’s 48- and 96-channel digital I/O cards, providing direct compatibility without the need for custom wiring.

- Industrial-Grade Shielded Cable:
Shielded twisted-pair construction minimizes electromagnetic interference (EMI) and crosstalk, maintaining signal integrity in electrically noisy environments.

- 1-Meter Cable Length:
Provides sufficient reach for standard rack or bench setups while minimizing signal degradation.

- Pin-to-Pin Mapping Consistency:
Each signal line from the 100-pin connector is mapped precisely to corresponding pins on the two 50-pin connectors, ensuring accurate signal routing and predictable performance.

- Durable Construction:
Designed for repeated connection cycles, with strain relief and reinforced connector housings to prevent mechanical stress and cable fatigue.

- Plug-and-Play Compatibility:
No additional configuration required; the cable provides direct electrical continuity between compatible devices.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Product Model | ACL-10253-1 |
| Cable Type | SCSI-II Interconnect Cable |
| Connector Type (End A) | 100-pin SCSI-II Male |
| Connector Type (End B) | Two 50-pin SCSI-II Male |
| Connector Gender | Male-to-Male |
| Cable Length | 1 meter (±5%) |
| Conductor Type | Twisted-pair, shielded copper |
| Shielding | Full foil and braid shielding |
| Insulation Material | High-temperature PVC or equivalent industrial-grade polymer |
| Outer Jacket Color | Typically gray or black (standard ADLINK industrial finish) |
| Operating Temperature Range | 0°C to +60°C (typical) |
| Storage Temperature Range | -20°C to +80°C |
| Connector Housing Material | Molded thermoplastic with metal retention clips |
| Contact Material | Gold-plated copper alloy |
| Cable Diameter | Approx. 8–10 mm (depending on shielding layer) |
| Weight | Approx. 150–200 g |
| Electrical Impedance | 90 Ω nominal (SCSI-II standard) |
| Signal Type Supported | TTL-level digital I/O signals |
| Compliance | SCSI-II (ANSI X3.131-1994) |

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### 4. Functionality

The ACL-10253-1 functions as a signal breakout and interconnect cable between a 100-pin SCSI-II interface (typically on an ADLINK PCI-7348 or PCI-7396 card) and two 50-pin SCSI-II terminal boards (such as DIN-24P/R). The cable transmits digital I/O signals, control lines, and ground references between the host controller and external devices.

Operational Principle:
- The 100-pin connector interfaces with the high-density SCSI-II port on the PCI card.
- The two 50-pin connectors split the signal set into two groups, each corresponding to half of the 100-pin signal array.
- Each 50-pin connector carries 48 signal lines plus ground and control references, maintaining full electrical continuity as defined by the pin mapping table.

Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and signal monitoring
- Laboratory instrumentation interfacing
- Digital I/O expansion for test benches
- Machine vision and motion control systems
- Custom signal routing between PCI-based I/O cards and external relay or sensor modules

Compatibility:
- Fully compatible with ADLINK PCI-7348 and PCI-7396 digital I/O cards
- Compatible with DIN-24P/R and similar terminal boards
- Supports standard SCSI-II pinout configurations for digital signal transmission

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### 5. Components & Accessories

Included Components:
- 1 × ACL-10253-1 cable assembly (1 m length)
- Factory-attached connectors (2 × 50-pin SCSI-II male, 1 × 100-pin SCSI-II male)
- Integrated strain relief at both ends
- Protective connector caps (optional, depending on packaging)

Optional Accessories:
- DIN-24P/R terminal boards for signal breakout
- PCI-7348 or PCI-7396 digital I/O cards
- SCSI-II female-to-female adapters (for extension)
- Cable management clips or mounting brackets

Connector Details:
- 100-pin SCSI-II Male Connector: High-density half-pitch (0.8 mm) connector with dual-row pin configuration.
- 50-pin SCSI-II Male Connectors: Standard half-pitch connectors with latch mechanisms for secure attachment.

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### 6. Installation & Setup

Requirements:
- Compatible ADLINK PCI-7348 or PCI-7396 card installed in the host system
- Corresponding terminal boards (e.g., DIN-24P/R) for external signal interfacing
- Available SCSI-II female connectors on both the card and terminal boards

Installation Steps:
1. Power off the host system and connected devices.
2. Connect the 100-pin male connector to the SCSI-II port on the PCI-7348/7396 card.
3. Attach each 50-pin male connector to the corresponding terminal board (A and B).
4. Ensure that the connectors are fully seated and secured using the latch or clip mechanisms.
5. Power on the system and verify signal continuity through the ADLINK software or diagnostic tools.

Mounting Options:
- The cable can be routed through cable trays or harnesses.
- Use cable ties or clamps to secure the cable and prevent strain on connectors.
- Maintain a minimum bend radius of 10× cable diameter to avoid internal conductor damage.

Configuration:
- No software configuration is required for the cable itself.
- Signal mapping is fixed according to the pin connection table provided by ADLINK.

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### 7. Performance & Capabilities

Signal Transmission:
- Supports high-speed digital I/O signaling up to several MHz, depending on the host card’s capabilities.
- Maintains low signal attenuation and minimal crosstalk due to shielded twisted-pair design.

Electrical Characteristics:
- Characteristic impedance: 90 Ω (SCSI-II standard)
- Crosstalk: <5% typical between adjacent pairs
- Propagation delay: <5 ns/m
- Insulation resistance: >100 MΩ @ 500 VDC
- Dielectric strength: 1000 VAC for 1 minute

Mechanical Durability:
- Connector insertion cycles: >500 mating cycles
- Cable flex life: >1 million bend cycles at 90° (typical industrial rating)

Limitations:
- Designed for short-distance interconnects (≤1 m) to maintain signal integrity.
- Not suitable for analog or high-voltage signal transmission.
- Intended for use in controlled environments (not outdoor-rated).

Efficiency and Reliability:
- High signal fidelity ensures accurate digital communication between host and peripheral.
- Shielding and grounding minimize noise susceptibility in industrial environments.

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### 8. Standards & Compliance

Industry Standards:
- SCSI-II (ANSI X3.131-1994): Defines electrical and mechanical characteristics for 50- and 100-pin connectors.
- EIA/TIA-568: General compliance for twisted-pair cable construction.
- RoHS Compliance: Free from hazardous substances such as lead, mercury, and cadmium.
- CE Marking: Meets European safety and electromagnetic compatibility requirements.
- UL Certification (where applicable): Components meet UL94V-0 flammability rating for insulation materials.

Regulatory Compliance:
- Conforms to ADLINK’s internal quality assurance and ISO 9001 manufacturing standards.
- Tested for continuity, insulation resistance, and mechanical integrity before shipment.

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### 9. Additional Information

Warranty:
- Standard ADLINK limited warranty (typically 1 year) covering manufacturing defects and workmanship.
- Warranty excludes damage due to misuse, improper installation, or environmental exposure beyond specified limits.

Support:
- Technical documentation, pinout diagrams, and installation guides available from ADLINK’s official website.
- Customer support via ADLINK’s regional service centers and online technical assistance.

Maintenance:
- Periodically inspect connectors for dust or oxidation; clean with approved contact cleaner if necessary.
- Avoid excessive bending or pulling on the cable.
- Store in a dry, temperature-controlled environment when not in use.

Updates & Revisions:
- Product revisions may include improved shielding or updated connector housings.
- Compatibility maintained across revisions for PCI-7348/7396 and DIN-24P/R systems.

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### Pin Connection Mapping Summary

The ACL-10253-1 cable maintains a direct one-to-one mapping between the 100-pin SCSI-II connector and the two 50-pin connectors. The mapping ensures that each signal from the 100-pin interface is distributed evenly across the two 50-pin connectors, preserving logical channel order and ground reference alignment.

Mapping Overview:
- Pins 1–50 on the 100-pin connector correspond to pins 1–25 on 50Sa and 1–25 on 50Sb.
- Pins 51–100 on the 100-pin connector correspond to pins 26–50 on 50Sa and 26–50 on 50Sb.
- This symmetrical mapping ensures that each 50-pin connector carries half of the total signal set, maintaining consistent signal grouping for dual-terminal board configurations.

This mapping structure is critical for ensuring that digital I/O channels from the PCI-7348/7396 card are correctly routed to the corresponding input/output terminals on the DIN-24P/R boards.

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### Summary

The ADLINK ACL-10253-1 is a precision-engineered, industrial-grade SCSI-II cable assembly designed for high-density digital I/O applications. Its dual 50-pin to single 100-pin configuration provides a robust and reliable connection between ADLINK’s PCI-7348/7396 cards and external terminal boards. With full shielding, gold-plated contacts, and a carefully defined pin mapping, the cable ensures optimal signal integrity, mechanical durability, and ease of installation. It adheres to SCSI-II and industrial cabling standards, making it a dependable choice for automation, data acquisition, and control system integration.

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Keywords for Technical Search:
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